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CN117582169A - Multifunctional eye parameter measurement method and device and computer storage medium - Google Patents

Multifunctional eye parameter measurement method and device and computer storage medium Download PDF

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Publication number
CN117582169A
CN117582169A CN202311312661.3A CN202311312661A CN117582169A CN 117582169 A CN117582169 A CN 117582169A CN 202311312661 A CN202311312661 A CN 202311312661A CN 117582169 A CN117582169 A CN 117582169A
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light
module
processing
parameter
measuring
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CN117582169B (en
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吴小翠
安林
秦嘉
陈咏然
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Hkust Led-Fpd Technology R & D Center At Foshan
Weiren Medical Foshan Co ltd
Weizhi Medical Technology Foshan Co ltd
Guangdong Weiren Medical Technology Co ltd
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Hkust Led-Fpd Technology R & D Center At Foshan
Weiren Medical Foshan Co ltd
Weizhi Medical Technology Foshan Co ltd
Guangdong Weiren Medical Technology Co ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/102Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for optical coherence tomography [OCT]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/107Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining the shape or measuring the curvature of the cornea
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/117Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/12Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
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  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

The invention discloses a multifunctional eye parameter measurement method and device and a computer storage medium, wherein the device comprises a light source module, a data processing module and a parameter measurement module; the method comprises the following steps: the light source module outputs matched emitted light according to the detected light emitting instruction; the parameter measurement module performs light splitting operation on the emitted light to obtain a first light splitting and a second light splitting corresponding to the emitted light; performing a first ray processing operation on the first beam splitter to obtain a return ray; simultaneously, performing a second ray processing operation on the second split light to obtain front section measuring light and rear section measuring light; finally, generating a target light interference signal corresponding to the eye according to the return light, the front section measuring light and the rear section measuring light; and the data processing module performs signal analysis operation on the target optical interference signal to obtain eye parameter data corresponding to the target optical interference signal. Therefore, the invention can improve the convenience and efficiency of measuring the eye parameters.

Description

Multifunctional eye parameter measurement method and device and computer storage medium
Technical Field
The invention relates to the technical field of eye parameter measurement, in particular to a multifunctional eye parameter measurement method and device and a computer storage medium.
Background
Along with the rapid increase of myopia people and the release of national policies, myopia prevention and control, a means for relieving the deepening of myopia degrees or preventing and correcting myopia is gradually developed, and the biological measuring instrument becomes an important eye examination device. However, the biological measuring instrument cannot perform multi-directional inspection on the fundus tissue structure, and in order to perform multi-directional inspection on the fundus tissue structure, auxiliary inspection is required by other fundus structure inspection devices. The final eye examination flow is very complicated, and eye information obtained by measurement of different devices is relatively disordered. It is important to provide a corresponding solution to the technical problem that the inspection information is disordered and not uniform and the functions of the biological measuring instrument cannot be well combined when the fundus tissue structure is inspected in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of providing a multifunctional eye parameter measuring method and device and a computer storage medium, which can combine the measured parameters of a biological measuring instrument and OCT measured parameters to realize the consistency check of the eye parameters, thereby being beneficial to reducing the measuring complexity of the eye parameters and improving the measuring convenience and the measuring efficiency of the eye parameters.
In order to solve the technical problems, a first aspect of the present invention discloses a multifunctional eye parameter measurement method, which is applied to a multifunctional eye parameter measurement device, wherein the multifunctional eye parameter measurement device comprises a light source module, a data processing module and a parameter measurement module; the method comprises the following steps:
the light source module outputs emitted light matched with the light emission instruction according to the detected light emission instruction;
the parameter measurement module performs light splitting operation on the emitted light to obtain first light splitting and second light splitting corresponding to the emitted light;
the parameter measurement module performs a preset first light processing operation on the first light beam to obtain a return light beam corresponding to the first light beam, wherein the return light beam is used for generating an optical interference signal corresponding to the currently measured eye; the first light processing operation comprises a light splitting operation, a light reflecting operation and a light delaying operation;
the parameter measurement module performs a preset second light processing operation on the second light split to obtain front section measurement light and rear section measurement light corresponding to the second light split; the second light ray processing operation comprises light ray collimation processing, front light saving processing and rear light saving processing operation;
The parameter measurement module generates a target optical interference signal corresponding to the eye according to the return light, the front section measurement light and the rear section measurement light;
and the data processing module executes preset signal analysis operation on the acquired target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal.
As an optional implementation manner, in the first aspect of the present invention, the multifunctional eye parameter measurement device further includes a fixation module, and the method further includes:
the fixation module is used for executing eye position adjustment operation on the eyes in the process that the parameter measurement module executes the second light processing operation on the second light splitting, so as to fix the eye position of the eyes;
the parameter measurement module comprises a first optical fiber coupler, wherein the first optical fiber coupler is used for splitting the emitted light to obtain corresponding first light splitting and second light splitting;
the data processing module performs a preset signal analysis operation on the obtained target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal, and the method includes:
The data processing module analyzes the obtained target optical interference signal to obtain amplitude information corresponding to the target optical interference signal;
the data processing module combines a plurality of preset eye parameter corresponding calculation formulas according to the amplitude information to calculate and obtain eye parameter data corresponding to each eye parameter.
In an optional implementation manner, in a first aspect of the present invention, the parameter measurement module further includes a first processing sub-module, and the parameter measurement module performs a preset first light processing operation on the first beam to obtain a return light corresponding to the first beam, where the processing sub-module includes:
the first processing sub-module executes the light splitting operation on the first light splitting to obtain a first sub-light splitting and a second sub-light splitting corresponding to the first light splitting;
the first processing sub-module executes light delay and reflection processing on the first sub-beam to obtain first reflected light corresponding to the first sub-beam;
the first processing sub-module executes the reflection processing on the second sub-beam to obtain second reflected light corresponding to the second sub-beam;
the first processing sub-module generates return light according to the first reflected light and the second reflected light;
And an optical path difference exists between the first reflected light and the second reflected light, and the optical path difference is formed through the optical delay processing.
As an optional implementation manner, in the first aspect of the present invention, the parameter measurement module further includes a second processing sub-module and a third processing sub-module; the parameter measurement module performs a preset second light processing operation on the second light component to obtain front section measurement light and rear section measurement light corresponding to the second light component, and the parameter measurement module includes:
the third processing sub-module performs collimation processing on the second light split to adjust the second light split into parallel light; performing light adjustment on the parallel light to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module executes preset back-section light processing on the second parallel light to obtain back-section measuring light corresponding to the second parallel light;
and the second processing sub-module executes preset front-section light processing on the first parallel light to obtain front-section measuring light corresponding to the first parallel light.
As an optional implementation manner, in the first aspect of the present invention, the third processing sub-module includes a first collimator, and the first collimator is configured to collimate the second light beam into parallel light;
The third processing sub-module further comprises a two-dimensional vibrating mirror, and the third processing sub-module adjusts the advancing light of the parallel light by adjusting the mirror surface angle of the two-dimensional vibrating mirror to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module further comprises two first measuring units;
the third processing sub-module performs preset back-section light processing on the second parallel light to obtain back-section measurement light corresponding to the second parallel light, and includes:
the third processing sub-module inputs the second parallel light into the two first measuring units so that the second parallel light sequentially passes through the two first measuring units, and then the second parallel light sequentially passes through the two first measuring units, the two-dimensional vibrating mirror and the first collimator to return, so that back-section measuring light corresponding to the second parallel light is obtained;
each first measuring unit consists of 1 dichroic mirror and 1 lens, and when the second parallel light is input into the two first measuring units, the second parallel light passes through the dichroic mirrors and then passes through the lenses.
As an alternative embodiment, in the first aspect of the present invention, the second processing sub-module includes a first mirror and a second measurement unit; the second processing sub-module performs preset front-section light processing on the first parallel light to obtain front-section measurement light corresponding to the first parallel light, and the second processing sub-module includes:
the second processing sub-module reflects the first parallel light through the first reflecting mirror so that the first parallel light is input into the second measuring unit; then the first parallel light sequentially passes through the two second measuring units, the first reflecting mirror, the two-dimensional vibrating mirror and the first collimator to return, so that front section measuring light corresponding to the first parallel light is obtained;
wherein the second measuring unit consists of 4 lenses and 1 dichroic mirror; wherein the first parallel light is inputted to the second measuring unit, passes through 2 lenses of the 4 lenses first, passes through the 1 dichroic mirror, and passes through the remaining 2 lenses of the 4 lenses last.
In a first aspect of the present invention, the first processing sub-module includes a second optical fiber coupler, where the second optical fiber coupler is configured to perform the optical splitting operation on the first optical beam to obtain a first sub-optical beam and a second sub-optical beam corresponding to the first optical beam;
The first processing sub-module further comprises a first collimating unit and a second collimating unit, wherein the first collimating unit consists of a second collimator, 1 lens and a second reflecting mirror;
the second collimating unit consists of a third collimator and a third reflecting mirror;
wherein the second mirror and the third mirror are spaced apart from each other by a predetermined distance in a horizontal direction, the predetermined distance corresponding to the optical path difference.
The invention discloses a multifunctional eye parameter measuring device, which comprises a light source module, a data processing module and a parameter measuring module;
the light source module is used for outputting emitted light matched with the light emission instruction according to the detected light emission instruction;
the parameter measurement module is used for performing light splitting operation on the emitted light to obtain a first light splitting and a second light splitting corresponding to the emitted light;
the parameter measurement module is further configured to perform a preset first light processing operation on the first beam to obtain a return light corresponding to the first beam, where the return light is used to generate an optical interference signal corresponding to the eye that is currently measured; the first light processing operation comprises a light splitting operation, a light reflecting operation and a light delaying operation;
The parameter measurement module is further configured to perform a preset second light processing operation on the second light component, so as to obtain front section measurement light and rear section measurement light corresponding to the second light component; the second light ray processing operation comprises light ray collimation processing, front light saving processing and rear light saving processing operation;
the parameter measurement module is further used for generating a target optical interference signal corresponding to the eye according to the return light, the front section measurement light and the rear section measurement light;
the data processing module is used for executing preset signal analysis operation on the obtained target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal.
As an optional implementation manner, in the second aspect of the present invention, the apparatus further includes a fixation module, where the fixation module is configured to perform an eye position adjustment operation on the eye portion to fix an eye position where the eye portion is located during the second light processing operation performed on the second light beam by the parameter measurement module;
the parameter measurement module comprises a first optical fiber coupler, and the first optical fiber coupler is used for splitting the emitted light to obtain corresponding first light splitting and second light splitting;
The data processing module performs a preset signal analysis operation on the obtained target optical interference signal, and the method for obtaining at least one eye parameter data corresponding to the target optical interference signal specifically includes:
the data processing module analyzes the obtained target optical interference signal to obtain amplitude information corresponding to the target optical interference signal;
the data processing module combines a plurality of preset eye parameter corresponding calculation formulas according to the amplitude information to calculate and obtain eye parameter data corresponding to each eye parameter.
In a second aspect of the present invention, the parameter measurement module further includes a first processing sub-module, and the parameter measurement module performs a preset first light processing operation on the first beam splitter, and the manner of obtaining the return light corresponding to the first beam splitter specifically includes:
the first processing sub-module executes the light splitting operation on the first light splitting to obtain a first sub-light splitting and a second sub-light splitting corresponding to the first light splitting;
the first processing sub-module executes light delay and reflection processing on the first sub-beam to obtain first reflected light corresponding to the first sub-beam;
The first processing sub-module executes the reflection processing on the second sub-beam to obtain second reflected light corresponding to the second sub-beam;
the first processing sub-module generates return light according to the first reflected light and the second reflected light;
and an optical path difference exists between the first reflected light and the second reflected light, and the optical path difference is formed through the optical delay processing.
As an optional implementation manner, in the second aspect of the present invention, the parameter measurement module further includes a second processing sub-module and a third processing sub-module; the method for obtaining the front section measuring light and the rear section measuring light corresponding to the second light split specifically includes:
the third processing sub-module performs collimation processing on the second light split to adjust the second light split into parallel light; performing light adjustment on the parallel light to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module executes preset back-section light processing on the second parallel light to obtain back-section measuring light corresponding to the second parallel light;
And the second processing sub-module executes preset front-section light processing on the first parallel light to obtain front-section measuring light corresponding to the first parallel light.
As an alternative embodiment, in the second aspect of the present invention, the third processing sub-module includes a first collimator for collimating the second light beam into parallel light;
the third processing sub-module further comprises a two-dimensional vibrating mirror;
the third processing sub-module is used for adjusting the advancing light of the parallel light by adjusting the mirror surface angle of the two-dimensional vibrating mirror to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module further comprises two first measuring units;
the third processing sub-module performs preset back-section light processing on the second parallel light, and the method for obtaining back-section measurement light corresponding to the second parallel light specifically includes:
the third processing sub-module inputs the second parallel light into the two first measuring units so that the second parallel light sequentially passes through the two first measuring units, and then the second parallel light sequentially passes through the two first measuring units, the two-dimensional vibrating mirror and the first collimator to return, so that back-section measuring light corresponding to the second parallel light is obtained;
Each first measuring unit consists of 1 dichroic mirror and 1 lens, and when the second parallel light is input into the two first measuring units, the second parallel light passes through the dichroic mirrors and then passes through the lenses.
As an alternative embodiment, in a second aspect of the present invention, the second processing sub-module includes a first mirror and a second measurement unit; the second processing sub-module performs preset front-section light processing on the first parallel light, and the method for obtaining front-section measurement light corresponding to the first parallel light specifically includes:
the second processing sub-module reflects the first parallel light through the first reflecting mirror so that the first parallel light is input into the second measuring unit; then the first parallel light sequentially passes through the two second measuring units, the first reflecting mirror, the two-dimensional vibrating mirror and the first collimator to return, so that front section measuring light corresponding to the first parallel light is obtained;
wherein the second measuring unit consists of 4 lenses and 1 dichroic mirror; wherein the first parallel light is inputted to the second measuring unit, passes through 2 lenses of the 4 lenses first, passes through the 1 dichroic mirror, and passes through the remaining 2 lenses of the 4 lenses last.
In a second aspect of the present invention, the first processing sub-module includes a second optical fiber coupler, where the second optical fiber coupler is configured to perform the optical splitting operation on the first optical beam to obtain a first sub-optical beam and a second sub-optical beam corresponding to the first optical beam;
the first processing sub-module further comprises a first collimating unit and a second collimating unit, wherein the first collimating unit consists of a second collimator, 1 lens and a second reflecting mirror;
the second collimating unit consists of a third collimator and a third reflecting mirror;
wherein the second mirror and the third mirror are spaced apart from each other by a predetermined distance in a horizontal direction, the predetermined distance corresponding to the optical path difference.
In a third aspect, the present invention discloses another multi-functional ocular parameter measuring device, the device comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform the method for measuring the parameters of the eye according to the first aspect of the present invention.
A fourth aspect of the invention discloses a computer storage medium storing computer instructions which, when invoked, are used to perform the method of measuring a multifunctional ocular parameter disclosed in the first aspect of the invention.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a multifunctional eye parameter measurement method which is applied to a multifunctional eye parameter measurement device, wherein the device comprises a light source module, a data processing module and a parameter measurement module; the method comprises the following steps: the light source module outputs emitted light matched with the light emission instruction according to the detected light emission instruction; the parameter measurement module performs light splitting operation on the emitted light to obtain a first light splitting and a second light splitting corresponding to the emitted light; the parameter measurement module performs preset first light processing operation on the first light beam to obtain return light rays corresponding to the first light beam, wherein the return light rays are used for generating optical interference signals corresponding to the eyes which are currently measured; the first light processing operation includes a spectroscopic operation, a light reflection operation, and a light delay operation; the parameter measurement module performs preset second light processing operation on the second light splitting to obtain front section measurement light and rear section measurement light corresponding to the second light splitting; the second ray processing operation comprises ray collimation processing, front light-saving processing and rear light-saving processing operation; the parameter measurement module generates a target light interference signal corresponding to the eye according to the return light, the front section measurement light and the rear section measurement light; the data processing module executes preset signal analysis operation on the acquired target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal. Therefore, the invention can output the emission light with the set wavelength based on the light source module, and then the parameter measurement module executes multiple light operations on the emission light, including a beam splitting operation, a first light processing operation after the beam splitting operation and a second light processing operation, so as to obtain the required return light, front section measuring light and rear section measuring light; finally, carrying out regression integration to obtain a required target optical interference signal, wherein the signal stores information related to all eye parameters to be measured, and finally, analyzing and calculating the target optical interference signal through a data processing module, so that eye parameter data (such as cornea thickness, anterior chamber depth and the like) corresponding to each eye parameter can be accurately calculated; the intelligent combination of the biological measuring instrument parameter and the OCT measuring parameter on the same measuring device is realized through the plurality of modules corresponding to the multifunctional eye parameter device, the problem that multiple devices are required to be switched when the biological measuring instrument parameter and the OCT measuring parameter are detected is solved, the complexity of measuring the two types of parameters is reduced, and the measuring convenience and the measuring efficiency of the two types of parameters are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for measuring parameters of a multifunctional eye according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for measuring multifunctional eye parameters according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a multifunctional eye parameter measurement device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another embodiment of a multifunctional eye parameter measuring device;
FIG. 5 is a schematic diagram of a further exemplary embodiment of a multifunctional ocular parameter measuring device;
FIG. 6 is a schematic diagram of another embodiment of a multifunctional ocular parameter measuring device;
FIG. 7 is a schematic diagram of a third processing sub-module according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a second processing sub-module according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another second processing sub-module according to an embodiment of the present invention;
FIG. 10 is a schematic view of a fixation module according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a multifunctional eye parameter measuring instrument according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or article.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The invention discloses a multifunctional eye parameter measurement method and device, and a computer storage medium, which can output emission light with a set wavelength based on a light source module, and then execute multiple light operations on the emission light through a parameter measurement module, wherein the multiple light operations comprise a beam splitting operation, a first light processing operation and a second light processing operation after the beam splitting operation, so as to obtain required return light, front section measuring light and rear section measuring light; finally, carrying out regression integration to obtain a required target optical interference signal, wherein the signal stores information related to all eye parameters to be measured, and finally, analyzing and calculating the target optical interference signal through a data processing module, so that eye parameter data (such as cornea thickness, anterior chamber depth and the like) corresponding to each eye parameter can be accurately calculated; the intelligent combination of the biological measuring instrument parameter and the OCT measuring parameter on the same measuring device is realized through the plurality of modules corresponding to the multifunctional eye parameter device, the problem that multiple devices are required to be switched when the biological measuring instrument parameter and the OCT measuring parameter are detected is solved, the complexity of measuring the two types of parameters is reduced, and the measuring convenience and the measuring efficiency of the two types of parameters are improved. The following will describe in detail.
Example 1
Referring to fig. 1, fig. 1 is a flow chart of a method for measuring parameters of a multifunctional eye according to an embodiment of the invention. The method for measuring the multifunctional eye parameter described in fig. 1 can be applied to a multifunctional eye parameter measuring device, and the multifunctional eye parameter measuring device can include a light source module, a data processing module and a parameter measuring module. As shown in fig. 1, the method for measuring the multifunctional ocular parameter may include the following operations:
101. and the light source module outputs the emitted light matched with the light emitting instruction according to the detected light emitting instruction.
In the embodiment of the invention, a coherent light source with low broadband is generally selected as the light source, and the central wavelength of the light source is 800-1060 nm.
102. The parameter measurement module performs light splitting operation on the emitted light to obtain a first light splitting and a second light splitting corresponding to the emitted light.
In the embodiment of the invention, the emitted light outputted by the light source module can be divided or adjusted into 2 paths of light in different directions through the parameter measurement module, and the 2 paths of light correspond to the first light splitting and the second light splitting.
103. And the parameter measurement module executes a preset first light processing operation on the first light beam to obtain a return light beam corresponding to the first light beam.
In the embodiment of the invention, the return light is used for generating an optical interference signal corresponding to the eye which is currently measured; the first light processing operation includes a spectroscopic operation, a light reflection operation, and a light delay operation.
In the embodiment of the invention, based on the optical delay operation, the return light corresponding to the subsequent first beam splitting is composed of light beams with different optical paths.
104. The parameter measurement module performs preset second light processing operation on the second light splitting to obtain front section measurement light and rear section measurement light corresponding to the second light splitting; the second ray processing operation includes a ray collimation process, a front-section light process, and a rear-section light process operation.
In the embodiment of the invention, the light collimation processing operation is used for adjusting the second light splitting to parallel light; the front-section light processing and the rear-section light processing are used for processing the parallel light through preset structures corresponding to respective processing operations, so that the required front-section measuring light and rear-section measuring light are obtained.
105. The parameter measurement module generates a target light interference signal corresponding to the eye according to the return light, the anterior segment measurement light and the posterior segment measurement light.
In this alternative embodiment, after the return light is obtained in step 103, based on the setting of the optical delay operation, beams with different optical paths exist in the return light; that is, the return Cheng Guangzhong can include a first return light and a second return; wherein the optical path length of the first return light can be recorded as longer than the optical path length of the second return light.
Further, after the front-section measuring light and the rear-section measuring light are obtained in step 104, the optical paths of the front-section measuring light and the rear-section measuring light are different based on the actual operation difference between the front-section light treatment and the rear-section light treatment; the optical path of the front section measuring light is generally set longer than that of the rear section measuring light; at this time, when the target light interference signal is generated, the parameter measurement module is used for interfering the light beams with similar optical paths, for example, the first return light interferes with the front section measurement light, and the second return light interferes with the rear section measurement light, so that the target light interference signals corresponding to the four light interference signals are obtained. The interference processing between the first and second return light and the front and rear measuring light is determined by the optical path length of the light during actual processing, and the embodiment of the invention is not limited.
In the alternative embodiment, the optical path difference is based on the light rays generating the target optical interference signals, namely, the target optical interference signals are obtained after the light ray interference of different optical paths is analyzed, and the specific eye parameters which can be analyzed are also different, so that the eye parameters which can be finally analyzed are more detailed and rich, and finally, the scheme corresponding to the embodiment of the invention can realize the multi-parameter measurement of the biological measuring instrument parameters and the OCT measuring parameters by adjusting the first and second light ray processing operations which are actually applied.
106. The data processing module executes preset signal analysis operation on the acquired target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal.
In the embodiment of the invention, various amplitude information exists in the target optical interference signal, each amplitude information is based on different actual calculation formulas, and the actual analysis requirement can obtain different types and different amounts of eye parameter data.
In embodiments of the present invention, the target optical interference signal may include anterior chamber structural information, retinal and choroidal structural information.
As shown in fig. 6, the data processing module may include a spectrometer and a computer processor, where the spectrometer is configured to receive the target optical interference signal; the computer processor is used for extracting and determining all amplitude information existing in the target optical interference signal, and further carrying out specific eye parameter data calculation according to the eye parameters to be measured currently, wherein the eye parameter data calculation can comprise: cornea thickness, anterior chamber depth, ocular axis length, retinal thickness (6*6 area), choroidal thickness (6*6 area).
Further, the thickness calculation formula corresponding to each eye parameter may be: t= (m x z)/(N x N);
wherein m represents the pixel occupied by the eye tissue structure; z represents the imaging depth of the multifunctional ocular parameter meter; n represents a camera pixel point; n represents the refractive index of the human eye.
The eye axis length calculation formula is: l (anterior surface of cornea-retinal pigment epithelium) +d; d is the optical path difference between the first return light and the second return light in the return light mentioned in step 105.
In the embodiment of the invention, it is to be noted that, in the multifunctional eye parameter measurement device, the parameter measurement module is a light path main body of the device and is mainly used for imaging an eye structure; meanwhile, the method is also used for acquiring structural information including anterior chamber structural information, retina and choroid; the thickness of the cornea, anterior chamber depth, retinal thickness (6*6 area), choroidal membrane thickness (6*6 area) can then be calculated via the data processing module.
Therefore, implementing the method for measuring the multifunctional eye parameters described in fig. 1 can output the emitted light with the set wavelength based on the light source module, and then execute multiple light operations on the emitted light via the parameter measuring module, including a beam splitting operation, a first light processing operation after the beam splitting operation, and a second light processing operation, to obtain the required return light, anterior segment measuring light, and posterior segment measuring light; finally, carrying out regression integration to obtain a required target optical interference signal, wherein the signal stores information related to all eye parameters to be measured, and finally, analyzing and calculating the target optical interference signal through a data processing module, so that eye parameter data (such as cornea thickness, anterior chamber depth and the like) corresponding to each eye parameter can be accurately calculated; the intelligent combination of the biological measuring instrument parameter and the OCT measuring parameter on the same measuring device is realized through the plurality of modules corresponding to the multifunctional eye parameter device, the problem that multiple devices are required to be switched when the biological measuring instrument parameter and the OCT measuring parameter are detected is solved, the complexity of measuring the two types of parameters is reduced, and the measuring convenience and the measuring efficiency of the two types of parameters are improved.
In an alternative embodiment, referring to fig. 4 and fig. 6, the parameter measurement module further includes a first processing sub-module, and the parameter measurement module performs a preset first light processing operation on the first beam splitter, and the manner of obtaining the return light corresponding to the first beam splitter specifically includes:
the first processing sub-module performs light splitting operation on the first light splitting to obtain first sub-light splitting and second sub-light splitting corresponding to the first light splitting;
the first processing sub-module executes light delay and reflection processing on the first sub-beam to obtain first reflected light corresponding to the first sub-beam;
the first processing sub-module performs reflection processing on the second sub-beam to obtain second reflected light corresponding to the second sub-beam;
the first processing sub-module generates return light according to the first reflected light and the second reflected light;
and the optical path difference exists between the first reflected light and the second reflected light, and the optical path difference is formed by optical delay processing.
In this optional embodiment, further, the first processing sub-module includes a second optical fiber coupler, where the second optical fiber coupler is configured to perform a splitting operation on the first beam to obtain a first sub-beam and a second sub-beam corresponding to the first beam;
the first processing sub-module further comprises a first collimating unit and a second collimating unit, wherein the first collimating unit consists of a second collimator, 1 lens and a second reflecting mirror;
The second collimating unit consists of a third collimator and a third reflecting mirror;
the second reflecting mirror and the third reflecting mirror are separated by a preset distance in the horizontal direction, and the preset distance corresponds to the optical path difference.
In this optional embodiment, specifically, the first split light output by the first optical fiber coupler is split by the second optical fiber coupler in the first processing sub-module, where one path of light (first sub-split light) returns after passing through the first collimation unit; the other path of light (second sub-beam) returns after passing through the second collimation unit.
In this alternative embodiment, referring to fig. 6, at the first processing sub-module, a second collimator and a third collimator are disposed at the same position in the vertical direction, and a distance D is formed between the second reflector and the third reflector in the horizontal direction, so that there is an optical path difference between two paths of light passing through the first collimating unit and the second collimating unit, and the optical path difference is 2D; at the same time, the distance difference between the second and third reflectors in the horizontal position is set to correspond to the light delay operation.
It can be seen that in this alternative embodiment, the further spectroscopic processing of the first spectroscopic is achieved by the arrangement of the second optical coupler; the first collimating unit and the second collimating unit are arranged, and a reflecting mirror is arranged between the two collimating units, so that the reflecting light (first reflecting light and second reflecting light) with different optical paths is obtained, wherein the distance difference exists in the horizontal direction; that is, the first processing module enables light beams with different optical paths to be accurately acquired, the light beams are used for subsequent interference and analysis of eye parameter data matched with preset eye parameters, and applicability and integrity of the multifunctional eye parameter measuring device are improved.
In another alternative embodiment, the method further comprises:
the data processing module calculates a first optical path corresponding to the first reflected light, a second optical path corresponding to the second reflected light and a target optical path difference between the first optical path and the second optical path after determining that the first reflected light and the second reflected light are acquired;
the data processing module judges whether the target optical path difference is in a range corresponding to the preset optical path difference; the preset optical path difference corresponds to the distance difference of the second reflecting mirror and the third reflecting mirror in the horizontal direction;
when the judgment result is yes, the corresponding arrangement of the first collimation unit and the second collimation unit is determined to be error-free;
when the judgment result is negative, according to the target optical path difference, the preset optical path difference, the first radiation light and the light transmission information, the mirror surface position of the second reflecting mirror and/or the third reflecting mirror is adjusted, so that the adjusted target optical path difference is in the corresponding range of the preset optical path difference;
the light transmission information comprises light speed of the first sub-beam splitter, the second sub-beam splitter and penetration time length corresponding to the first sub-beam splitter penetrating through the first collimation unit.
In this optional embodiment, the method for calculating the first optical path corresponding to the first reflected light, the second optical path corresponding to the second reflected light, and the target optical path difference between the first optical path and the second optical path by the data processing module specifically includes:
The data processing module light source module outputs the starting moment of the emitted light, the first cut-off moment of the received first reflected light and the second cut-off moment of the received second reflected light;
respectively calculating a first time difference and a second time difference between the first cut-off time and the starting time and between the second cut-off time and the starting time;
then, the light velocity of the emitted light is multiplied by the first time difference and the second time difference respectively, and a first optical path corresponding to the first reflected light and a second optical path corresponding to the second reflected light are obtained through calculation;
calculating the difference between the first optical path and the second optical path and taking an absolute value to obtain a target optical path difference;
further, after the first time difference and the second time difference are calculated, the method further includes:
acquiring a first transmission loss value of the emitted light passing through the first optical fiber coupler and the second optical fiber coupler, a second transmission loss value passing through the first collimating unit and a third transmission loss value passing through the second collimating unit;
correcting the first time difference according to the first transmission loss value and the second transmission loss value;
correcting the second time difference according to the first transmission loss value and the third transmission loss value;
and then triggering and executing the operation of multiplying the light velocity of the emitted light with the first time difference and the second time difference respectively, and calculating to obtain a first optical path corresponding to the first reflected light and a second optical path corresponding to the second reflected light.
It can be seen that, in this alternative embodiment, in addition to the calculation of the respective optical paths of the first and second reflected lights, the losses of the plurality of intermediate components (the first and second optical fiber couplers, the first and second collimating units) in the optical path can be considered, so that the correction of the time difference is performed, that is, the correction of the optical path is realized; to a certain extent, the accuracy of the position adjustment in the subsequent adjustment of the mirror surface position of the second mirror and/or the third mirror.
It can be seen that in this optional embodiment, after the first and second reflected lights are obtained, a verification process for the two reflected lights is further provided, and the optical path difference of the two reflected lights and the distance difference between the second and third reflecting mirrors can be compared and verified, so as to automatically correct and adjust the distance differences between the second and third reflecting mirrors; the first reflected light and the second reflected light obtained later are more suitable for the use requirement of the whole measuring device, and the applicability of the multifunctional eye parameter measuring device is improved.
Example two
Referring to fig. 2, fig. 2 is a flow chart of another method for measuring parameters of an eye according to an embodiment of the invention. The method for measuring the multifunctional eye parameter described in fig. 2 may be applied to a device for measuring the multifunctional eye parameter, which is not limited in the embodiment of the present invention. As shown in fig. 2, the method for measuring the multifunctional ocular parameter may include the following operations:
201. And the light source module outputs the emitted light matched with the light emitting instruction according to the detected light emitting instruction.
202. The parameter measurement module performs light splitting operation on the emitted light to obtain a first light splitting and a second light splitting corresponding to the emitted light.
203. And the parameter measurement module executes a preset first light processing operation on the first light beam to obtain a return light beam corresponding to the first light beam.
204. The parameter measurement module performs preset second light processing operation on the second light splitting to obtain front section measurement light and rear section measurement light corresponding to the second light splitting; the second ray processing operation includes a ray collimation process, a front-section light process, and a rear-section light process operation.
In an embodiment of the present invention, optionally, the multifunctional eye parameter measurement device may further include a fixation module.
205. The fixation module performs an eye position adjustment operation on the eyes in the process that the parameter measurement module performs a second light processing operation on the second light splitting, so as to fix the eye position of the eyes.
In an embodiment of the present invention, optionally, the parameter measurement module includes a first optical fiber coupler, where the first optical fiber coupler is configured to split the emitted light to obtain a first beam split and a second beam split corresponding to the emitted light.
In the embodiment of the invention, the fixation module specifically can comprise a fixation cursor screen and at least 3 lenses; the eye position of the currently observed eye is fixed through the fixation module, so that the applicability of the overall multifunctional eye parameter measuring device is improved.
206. The parameter measurement module generates a target light interference signal corresponding to the eye according to the return light, the anterior segment measurement light and the posterior segment measurement light.
207. The data processing module analyzes the obtained target optical interference signal to obtain amplitude information corresponding to the target optical interference signal.
208. The data processing module combines a plurality of preset eye parameter corresponding calculation formulas according to the amplitude information to calculate and obtain eye parameter data corresponding to each eye parameter.
In the embodiment of the present invention, for other descriptions of step 201 to step 204 and step 206, please refer to other specific descriptions of step 101 to step 104 and step 105 in the first embodiment, and the description of the embodiment of the present invention is omitted.
Therefore, the implementation of the method for measuring the multifunctional eye parameters described in fig. 2 sets the fixation module to fix the eye position of the eye to be observed/inspected currently, which is beneficial to the applicability of the whole multifunctional eye parameter measuring device and reduces the errors of analysis and calculation of the eye parameters to be performed subsequently; the eye parameter data corresponding to the required eye parameters can be accurately calculated based on the obtained target optical interference signals according to the current required eye parameter calculation requirements, and the calculation flexibility and accuracy of the eye parameter data are improved.
In an alternative embodiment, referring to fig. 4 and fig. 6-9, the parameter measurement module further includes a second processing sub-module and a third processing sub-module; and the parameter measurement module performs a preset second light processing operation on the second light beam, and the method for obtaining the front section measurement light and the rear section measurement light corresponding to the second light beam specifically includes:
the third processing sub-module performs collimation processing on the second light split to adjust the second light split into parallel light; performing light adjustment on the parallel light to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module executes preset back-section light processing on the second parallel light to obtain back-section measuring light corresponding to the second parallel light;
and the second processing sub-module executes preset front-section light processing on the first parallel light to obtain front-section measuring light corresponding to the first parallel light.
In this optional embodiment, after the first optical fiber coupler splits light to obtain the first optical beam and the second optical beam, a second processing sub-module and a third processing sub-module are further configured to process the different parallel light of the second optical beam after light is adjusted, so as to obtain the required front section measuring light and the rear section measuring light, where the front section measuring light and the rear section measuring light correspond to the first reflected light and the second reflected light obtained in the previous steps, and are used for obtaining the required target interference optical signal after interference; that is, the arrangement of the second and third processing sub-modules is beneficial to improving the applicability of the multifunctional eye parameter measuring device.
In this alternative embodiment, further, the third processing sub-module includes a first collimator for collimating the second split light into parallel light;
the third processing sub-module further comprises a two-dimensional vibrating mirror, and the third processing sub-module adjusts the advancing light of the parallel light by adjusting the mirror surface angle of the two-dimensional vibrating mirror to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module further comprises two first measuring units;
the third processing sub-module performs preset back-section light processing on the second parallel light to obtain back-section measurement light corresponding to the second parallel light, including:
the third processing sub-module inputs the second parallel light into the two first measuring units so that the second parallel light sequentially passes through the two first measuring units, and then the second parallel light sequentially passes through the two first measuring units, the two-dimensional vibrating mirror and the first collimator to return, so that back section measuring light corresponding to the second parallel light is obtained;
each first measuring unit consists of 1 dichroic mirror and 1 lens, and when the second parallel light is input into the two first measuring units, the second parallel light passes through the dichroic mirrors and then passes through the lenses.
In this alternative embodiment, the number of the first measurement units may be increased or decreased according to the actual measurement requirement, the number of the dichroic mirrors and the reflecting mirrors in each first measurement unit, and the relative distance between the dichroic mirrors and the reflecting mirrors may also be adjusted according to the actual measurement requirement, which is not limited in the embodiment of the present invention.
It can be seen that in this alternative embodiment, the third processing sub-module implements parallel light adjustment of the second beam splitter by the arrangement of the first collimator; different light directions of parallel light are controlled through the mirror surface angle adjustment of the two-dimensional vibrating mirror; the required back section measuring light is finally obtained through the transmission adjustment of the two first measuring units, namely, the accurate measurement/acquisition of the back section measuring light is realized through the refinement structure of the third processing sub-module and the linkage of multiple devices, and the applicability of the device is improved.
In this alternative embodiment, optionally, the second processing sub-module comprises a first mirror and a second measurement unit; the second processing sub-module performs preset front-section light processing on the first parallel light to obtain front-section measurement light corresponding to the first parallel light, and the second processing sub-module comprises:
the second processing sub-module reflects the first parallel light through the first reflecting mirror so that the first parallel light is input into the second measuring unit; then the first parallel light sequentially passes through the two second measuring units, the first reflecting mirror, the two-dimensional vibrating mirror and the first collimator to return, so that front section measuring light corresponding to the first parallel light is obtained;
Wherein the second measuring unit consists of 4 lenses and 1 dichroic mirror; when the first parallel light is input into the second measuring unit, the first parallel light passes through 2 lenses in the 4 lenses, then passes through the 1 dichroic mirror, and finally passes through the rest 2 lenses in the 4 lenses.
In this alternative embodiment, the second processing sub-module switches the parallel light of the second beam splitter to a different optical path from the parallel light processed by the third processing sub-module by setting the first radiation mirror, so as to implement isolation processing of the parallel light; the two second measuring units are used for transmitting and adjusting the light rays, so that the required front section measuring light is finally obtained, namely, the accurate measurement/acquisition of the front section measuring light is realized through the refinement structure of the third processing sub-module and the linkage of multiple devices, and the applicability of the device is improved.
In this alternative embodiment, optionally, after the front section measurement light and the rear section measurement light are also acquired, the method further includes:
determining a front section optical path corresponding to the front section measuring light;
the front section optical path is respectively compared with a first optical path of the first reflected light and a second optical path of the second reflected light, so that a comparison result of the front section optical path and the first optical path and the second optical path is obtained;
When the comparison result shows that the optical path of the front section is matched with the optical path of the first optical path or the second optical path, determining the optical path paired with the optical path of the front section as a first determined optical path, wherein the light corresponding to the first determined optical path is used for executing interference processing with the front section measuring light subsequently so as to generate a target interference light signal;
when the comparison result shows that the front optical path and the first optical path or the second optical path are not matched, determining the minimum optical path difference according to the comparison result; the comparison result comprises a first front section optical path difference of the front section optical path and the first optical path and a second front section optical path difference of the front section optical path and the second optical path; selecting the smaller value of the first front section optical path difference and the second front section optical path difference as the minimum optical path difference;
and adjusting the specific device positions of the two-dimensional galvanometer and the first measuring unit in the third processing sub-module corresponding to the front section measuring light according to the minimum optical path difference so as to enable the front section optical path to be matched with the first optical path or the second optical path.
In addition, for the measurement light of the later section, similar processing operations as described above are also performed, and corresponding operation steps are not described herein.
Therefore, in this optional embodiment, after the front-section measurement light and the rear-section measurement light are obtained, the optical path calculation of the front-section measurement light and the rear-section measurement light, and the comparison of the first optical path and the second optical path corresponding to the first reflected light and the second reflected light can be performed, if the comparison shows that the optical path adaptation between the front-section optical path/the rear-section optical path and the first optical path or the second optical path does not exist, the specific device structure of the second processing sub-module/the third processing sub-module is automatically adjusted, so that the signal determination accuracy and the reliability of the target optical interference signal obtained by the subsequent optical interference are improved, and the measurement accuracy of the measured eye parameter data is also improved.
Example III
Referring to fig. 3, fig. 3 is a schematic structural diagram of a multifunctional eye parameter measuring device according to an embodiment of the invention. Wherein the multifunctional eye parameter measuring device can be a terminal, a device or equipment; referring to fig. 11, the multifunctional eye parameter measuring device may be a multifunctional eye parameter measuring instrument, and the measuring instrument is a device combining a biological measuring instrument and 3D OCT. The setting of the specific multifunctional eye parameter measuring device can be adjusted according to actual measurement requirements, and the embodiment of the invention is not limited. As shown in fig. 3, the multifunctional eye parameter measuring device may include a light source module 301, a parameter measuring module 302, and a data processing module 303, wherein:
a light source module 301, configured to output an emission light matched with the light emission instruction according to the detected light emission instruction;
the parameter measurement module 302 is configured to perform a beam splitting operation on the emitted light, so as to obtain a first beam splitting and a second beam splitting corresponding to the emitted light;
the parameter measurement module 302 is further configured to perform a preset first light processing operation on the first beam, so as to obtain a return light corresponding to the first beam, where the return light is used to generate an optical interference signal corresponding to the currently measured eye; the first light processing operation includes a spectroscopic operation, a light reflection operation, and a light delay operation;
The parameter measurement module 302 is further configured to perform a preset second light processing operation on the second beam splitter, so as to obtain front-section measurement light and rear-section measurement light corresponding to the second beam splitter; the second ray processing operation comprises ray collimation processing, front light-saving processing and rear light-saving processing operation;
the parameter measurement module 302 is further configured to generate a target optical interference signal corresponding to the eye according to the return light, the anterior segment measurement light, and the posterior segment measurement light;
a data processing module 303, configured to perform a preset signal analysis operation on the obtained target optical interference signal, to obtain at least one eye parameter data corresponding to the target optical interference signal
As can be seen, implementing the multifunctional eye parameter measurement apparatus described in fig. 3 can output an emission light with a predetermined wavelength based on the light source module, and then perform multiple light operations on the emission light via the parameter measurement module, including a beam splitting operation, a first light processing operation after the beam splitting operation, and a second light processing operation, to obtain a required return light, a front section measurement light, and a rear section measurement light; finally, carrying out regression integration to obtain a required target optical interference signal, wherein the signal stores information related to all eye parameters to be measured, and finally, analyzing and calculating the target optical interference signal through a data processing module, so that eye parameter data (such as cornea thickness, anterior chamber depth and the like) corresponding to each eye parameter can be accurately calculated; the intelligent combination of the biological measuring instrument parameter and the OCT measuring parameter on the same measuring device is realized through the plurality of modules corresponding to the multifunctional eye parameter device, the problem that multiple devices are required to be switched when the biological measuring instrument parameter and the OCT measuring parameter are detected is solved, the complexity of measuring the two types of parameters is reduced, and the measuring convenience and the measuring efficiency of the two types of parameters are improved.
In an alternative embodiment, as shown in fig. 4, the apparatus further includes a fixation module 304, where the fixation module 304 is configured to perform an eye position adjustment operation on the eye during the second light processing operation performed on the second light beam by the parameter measurement module 302, so as to fix an eye position where the eye is located;
as shown in fig. 6, the parameter measurement module 302 includes a first optical fiber coupler 3021, where the first optical fiber coupler 3021 is configured to split the emitted light to obtain a first beam split and a second beam split corresponding to the emitted light;
the data processing module 303 performs a preset signal analysis operation on the obtained target optical interference signal, and the manner of obtaining at least one eye parameter data corresponding to the target optical interference signal specifically includes:
the data processing module 303 analyzes the obtained target optical interference signal to obtain amplitude information corresponding to the target optical interference signal;
the data processing module 303 combines the magnitude information with a plurality of preset calculation formulas corresponding to the eye parameters to calculate and obtain the eye parameter data corresponding to each eye parameter.
In this alternative embodiment, further referring to fig. 10, as shown in fig. 10, the fixation module 304 may specifically include a fixation cursor screen and at least 3 lenses; the eye position of the currently observed eye is fixed through the fixation module, so that the applicability of the overall multifunctional eye parameter measuring device is improved.
It can be seen that, in this alternative embodiment, the fixation module 304 is configured to fix the eye position of the currently observed/inspected eye, which is beneficial to the applicability of the overall multifunctional eye parameter measurement device, and reduce the errors of subsequent eye parameter analysis and calculation; the eye parameter data corresponding to the required eye parameters can be accurately calculated based on the obtained target optical interference signals according to the current required eye parameter calculation requirements, and the calculation flexibility and accuracy of the eye parameter data are improved.
In another alternative embodiment, as shown in fig. 4, the parameter measurement module 302 further includes a first processing sub-module 3022, and the manner in which the parameter measurement module 302 performs the preset first light processing operation on the first beam split to obtain the return light corresponding to the first beam split specifically includes:
the first processing sub-module 3022 performs a light splitting operation on the first light split to obtain a first sub-light split and a second sub-light split corresponding to the first light split;
the first processing sub-module 3022 performs optical delay and reflection processing on the first sub-beam to obtain first reflected light corresponding to the first sub-beam;
the first processing sub-module 3022 performs reflection processing on the second sub-beam to obtain second reflected light corresponding to the second sub-beam;
The first processing sub-module 3022 generates return light according to the first reflected light and the second reflected light;
and the optical path difference exists between the first reflected light and the second reflected light, and the optical path difference is formed by optical delay processing.
In this alternative embodiment, further, referring to fig. 6, as shown in fig. 6, the first processing submodule 3022 includes a second optical fiber coupler, where the second optical fiber coupler is configured to perform a splitting operation on the first beam to obtain a first sub-beam and a second sub-beam corresponding to the first beam;
the first processing sub-module 3022 further includes a first collimating unit and a second collimating unit, the first collimating unit being composed of a second collimator, 1 lens, and a second reflecting mirror;
the second collimating unit consists of a third collimator and a third reflecting mirror;
the second reflecting mirror and the third reflecting mirror are separated by a preset distance in the horizontal direction, and the preset distance corresponds to the optical path difference.
It can be seen that in this alternative embodiment, the further spectroscopic processing of the first spectroscopic is achieved by the arrangement of the second optical coupler; the first collimating unit and the second collimating unit are arranged, and a reflecting mirror is arranged between the two collimating units, so that the reflecting light (first reflecting light and second reflecting light) with different optical paths is obtained, wherein the distance difference exists in the horizontal direction; that is, the first processing module enables light beams with different optical paths to be accurately acquired, the light beams are used for subsequent interference and analysis of eye parameter data matched with preset eye parameters, and applicability and integrity of the multifunctional eye parameter measuring device are improved.
In yet another alternative embodiment, as shown in fig. 4, the parameter measurement module 302 further includes a second processing sub-module 3023, a third processing sub-module 3024; the manner in which the parameter measurement module 302 performs the preset second light processing operation on the second light component to obtain the front section measurement light and the rear section measurement light corresponding to the second light component specifically includes:
the third processing sub-module 3024 performs collimation processing on the second split light to adjust the second split light into parallel light; performing light adjustment on the parallel light to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module 3024 performs preset back-section light processing on the second parallel light to obtain back-section measurement light corresponding to the second parallel light;
the second processing sub-module 3023 performs a preset front-section light processing on the first parallel light, to obtain front-section measurement light corresponding to the first parallel light.
In this optional embodiment, after the first optical fiber coupler splits light to obtain the first optical beam and the second optical beam, a second processing sub-module and a third processing sub-module are further configured to process the different parallel light of the second optical beam after light is adjusted, so as to obtain the required front section measuring light and the rear section measuring light, where the front section measuring light and the rear section measuring light correspond to the first reflected light and the second reflected light obtained in the previous steps, and are used for obtaining the required target interference optical signal after interference; that is, the arrangement of the second and third processing sub-modules is beneficial to improving the applicability of the multifunctional eye parameter measuring device.
In this alternative embodiment, further referring to fig. 6-7, as shown in fig. 6 and 7, the third processing sub-module 3024 includes a first collimator for collimating the second light beam into parallel light;
as shown in fig. 6 and 7, the third processing sub-module 3024 further includes a two-dimensional galvanometer;
a third processing sub-module 3024, configured to adjust the advancing light of the parallel light by adjusting the mirror angle of the two-dimensional galvanometer, so as to obtain a first parallel light that is directed to the first light and a second parallel light that is directed to the second light;
the third processing sub-module 3024 further comprises two first measurement units;
the third processing sub-module 3024 performs a preset back-section light processing on the second parallel light, and the manner of obtaining the back-section measurement light corresponding to the second parallel light specifically includes:
the third processing sub-module 3024 inputs the second parallel light into the two first measurement units, so that the second parallel light sequentially passes through the two first measurement units, and then sequentially passes through the two first measurement units, the two-dimensional galvanometer and the first collimator to return, so as to obtain back section measurement light corresponding to the second parallel light;
each first measuring unit consists of 1 dichroic mirror and 1 lens, and when the second parallel light is input into the two first measuring units, the second parallel light passes through the dichroic mirrors and then passes through the lenses.
It can be seen that in this alternative embodiment, the third processing sub-module implements parallel light adjustment of the second beam splitter by the arrangement of the first collimator; different light directions of parallel light are controlled through the mirror surface angle adjustment of the two-dimensional vibrating mirror; the required back section measuring light is finally obtained through the transmission adjustment of the two first measuring units, namely, the accurate measurement/acquisition of the back section measuring light is realized through the refinement structure of the third processing sub-module and the linkage of multiple devices, and the applicability of the device is improved.
In this alternative embodiment, optionally, as shown in fig. 8 and 9, the second processing sub-module 3023 comprises a first mirror and a second measurement unit; the second processing sub-module 3023 performs a preset front-section light processing on the first parallel light, and the manner of obtaining the front-section measurement light corresponding to the first parallel light specifically includes:
the second processing sub-module 3023 reflects the first parallel light by the first reflecting mirror so that the first parallel light is input to the second measuring unit; then the first parallel light sequentially passes through the two second measuring units, the first reflecting mirror, the two-dimensional vibrating mirror and the first collimator to return, so that front section measuring light corresponding to the first parallel light is obtained;
Wherein the second measuring unit consists of 4 lenses and 1 dichroic mirror; when the first parallel light is input into the second measuring unit, the first parallel light passes through 2 lenses in the 4 lenses, then passes through the 1 dichroic mirror, and finally passes through the rest 2 lenses in the 4 lenses.
In this alternative embodiment, the second processing sub-module switches the parallel light of the second beam splitter to a different optical path from the parallel light processed by the third processing sub-module by setting the first radiation mirror, so as to implement isolation processing of the parallel light; the two second measuring units are used for transmitting and adjusting the light rays, so that the required front section measuring light is finally obtained, namely, the accurate measurement/acquisition of the front section measuring light is realized through the refinement structure of the third processing sub-module and the linkage of multiple devices, and the applicability of the device is improved.
Example IV
Referring to fig. 5, fig. 5 is a schematic structural diagram of another multifunctional eye parameter measuring device according to an embodiment of the invention. As shown in fig. 5, the multifunctional ocular parameter measuring device may include:
a memory 401 storing executable program codes;
a processor 402 coupled with the memory 401;
The processor 402 invokes executable program codes stored in the memory 401 to perform the steps in the method for measuring a multifunctional ocular parameter described in the first embodiment or the second embodiment of the present invention.
Example five
The embodiment of the invention discloses a computer storage medium which stores computer instructions for executing the steps in the multifunctional eye parameter measuring method described in the first or second embodiment of the invention when the computer instructions are called.
Example six
An embodiment of the present invention discloses a computer program product comprising a non-transitory computer storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps of the method for measuring a multifunctional ocular parameter described in the first or second embodiment.
The apparatus embodiments described above are merely illustrative, in which the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer storage medium including Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), programmable Read-Only Memory (PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disk Memory, tape Memory, or any other medium readable by a computer that can be used to carry or store data.
Finally, it should be noted that: the embodiment of the invention discloses a multifunctional eye parameter measuring method and device, and a computer storage medium, which are disclosed as preferred embodiments of the invention, and are only used for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The multifunctional eye parameter measuring method is characterized by being applied to a multifunctional eye parameter measuring device, wherein the multifunctional eye parameter measuring device comprises a light source module, a data processing module and a parameter measuring module; the method comprises the following steps:
the light source module outputs emitted light matched with the light emission instruction according to the detected light emission instruction;
the parameter measurement module performs light splitting operation on the emitted light to obtain first light splitting and second light splitting corresponding to the emitted light;
The parameter measurement module performs a preset first light processing operation on the first light beam to obtain a return light beam corresponding to the first light beam, wherein the return light beam is used for generating an optical interference signal corresponding to the currently measured eye; the first light processing operation comprises a light splitting operation, a light reflecting operation and a light delaying operation;
the parameter measurement module performs a preset second light processing operation on the second light split to obtain front section measurement light and rear section measurement light corresponding to the second light split; the second light ray processing operation comprises light ray collimation processing, front light saving processing and rear light saving processing operation;
the parameter measurement module generates a target optical interference signal corresponding to the eye according to the return light, the front section measurement light and the rear section measurement light;
and the data processing module executes preset signal analysis operation on the acquired target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal.
2. The method of claim 1, wherein the device further comprises a fixation module, the method further comprising:
The fixation module is used for executing eye position adjustment operation on the eyes in the process that the parameter measurement module executes the second light processing operation on the second light splitting, so as to fix the eye position of the eyes;
the parameter measurement module comprises a first optical fiber coupler, wherein the first optical fiber coupler is used for splitting the emitted light to obtain corresponding first light splitting and second light splitting;
the data processing module performs a preset signal analysis operation on the obtained target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal, and the method includes:
the data processing module analyzes the obtained target optical interference signal to obtain amplitude information corresponding to the target optical interference signal;
the data processing module combines a plurality of preset eye parameter corresponding calculation formulas according to the amplitude information to calculate and obtain eye parameter data corresponding to each eye parameter.
3. The method according to claim 2, wherein the parameter measurement module further includes a first processing sub-module, and the parameter measurement module performs a preset first light processing operation on the first beam to obtain a return light corresponding to the first beam, and includes:
The first processing sub-module executes the light splitting operation on the first light splitting to obtain a first sub-light splitting and a second sub-light splitting corresponding to the first light splitting;
the first processing sub-module executes light delay and reflection processing on the first sub-beam to obtain first reflected light corresponding to the first sub-beam;
the first processing sub-module executes the reflection processing on the second sub-beam to obtain second reflected light corresponding to the second sub-beam;
the first processing sub-module generates return light according to the first reflected light and the second reflected light;
and an optical path difference exists between the first reflected light and the second reflected light, and the optical path difference is formed through the optical delay processing.
4. The method according to claim 2 or 3, wherein the parameter measurement module further comprises a second processing sub-module and a third processing sub-module; the parameter measurement module performs a preset second light processing operation on the second light component to obtain front section measurement light and rear section measurement light corresponding to the second light component, and the parameter measurement module includes:
the third processing sub-module performs collimation processing on the second light split to adjust the second light split into parallel light; performing light adjustment on the parallel light to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
The third processing sub-module executes preset back-section light processing on the second parallel light to obtain back-section measuring light corresponding to the second parallel light;
and the second processing sub-module executes preset front-section light processing on the first parallel light to obtain front-section measuring light corresponding to the first parallel light.
5. The method of claim 4, wherein the third processing sub-module comprises a first collimator for collimating the second split light into parallel light;
the third processing sub-module further comprises a two-dimensional vibrating mirror, and the third processing sub-module adjusts the advancing light of the parallel light by adjusting the mirror surface angle of the two-dimensional vibrating mirror to obtain first parallel light which goes to the first light and second parallel light which goes to the second light;
the third processing sub-module further comprises two first measuring units;
the third processing sub-module performs preset back-section light processing on the second parallel light to obtain back-section measurement light corresponding to the second parallel light, and includes:
the third processing sub-module inputs the second parallel light into the two first measuring units so that the second parallel light sequentially passes through the two first measuring units, and then the second parallel light sequentially passes through the two first measuring units, the two-dimensional vibrating mirror and the first collimator to return, so that back-section measuring light corresponding to the second parallel light is obtained;
Each first measuring unit consists of 1 dichroic mirror and 1 lens, and when the second parallel light is input into the two first measuring units, the second parallel light passes through the dichroic mirrors and then passes through the lenses.
6. The method of claim 5, wherein the second processing sub-module comprises a first mirror and a second measurement unit; the second processing sub-module performs preset front-section light processing on the first parallel light to obtain front-section measurement light corresponding to the first parallel light, and the second processing sub-module includes:
the second processing sub-module reflects the first parallel light through the first reflecting mirror so that the first parallel light is input into the second measuring unit; then the first parallel light sequentially passes through the two second measuring units, the first reflecting mirror, the two-dimensional vibrating mirror and the first collimator to return, so that front section measuring light corresponding to the first parallel light is obtained;
wherein the second measuring unit consists of 4 lenses and 1 dichroic mirror; wherein the first parallel light is inputted to the second measuring unit, passes through 2 lenses of the 4 lenses first, passes through the 1 dichroic mirror, and passes through the remaining 2 lenses of the 4 lenses last.
7. The method for measuring a multifunctional ocular parameter according to claim 3, wherein the first processing sub-module comprises a second optical fiber coupler, and the second optical fiber coupler is configured to perform the spectroscopic operation on the first spectroscopic to obtain a first sub-spectroscopic and a second sub-spectroscopic corresponding to the first spectroscopic;
the first processing sub-module further comprises a first collimating unit and a second collimating unit, wherein the first collimating unit consists of a second collimator, 1 lens and a second reflecting mirror;
the second collimating unit consists of a third collimator and a third reflecting mirror;
wherein the second mirror and the third mirror are spaced apart from each other by a predetermined distance in a horizontal direction, the predetermined distance corresponding to the optical path difference.
8. The multifunctional eye parameter measuring device is characterized by comprising a light source module, a data processing module and a parameter measuring module;
the light source module is used for outputting emitted light matched with the light emission instruction according to the detected light emission instruction;
the parameter measurement module is used for performing light splitting operation on the emitted light to obtain a first light splitting and a second light splitting corresponding to the emitted light;
The parameter measurement module is further configured to perform a preset first light processing operation on the first beam to obtain a return light corresponding to the first beam, where the return light is used to generate an optical interference signal corresponding to the eye that is currently measured; the first light processing operation comprises a light splitting operation, a light reflecting operation and a light delaying operation;
the parameter measurement module is further configured to perform a preset second light processing operation on the second light component, so as to obtain front section measurement light and rear section measurement light corresponding to the second light component; the second light ray processing operation comprises light ray collimation processing, front light saving processing and rear light saving processing operation;
the parameter measurement module is further used for generating a target optical interference signal corresponding to the eye according to the return light, the front section measurement light and the rear section measurement light;
the data processing module is used for executing preset signal analysis operation on the obtained target optical interference signal to obtain at least one eye parameter data corresponding to the target optical interference signal.
9. A multi-functional ocular parameter measuring device, the device comprising:
A memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform the multifunctional ocular parameter measurement method of any one of claims 1-7.
10. A computer storage medium storing computer instructions which, when invoked, are adapted to perform the method of measuring a multifunctional ocular parameter as claimed in any one of claims 1-7.
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