CN203524643U - An OCT scanning device and ophthalmic OCT equipment - Google Patents

Abstract

The utility model is suitable for an ophthalmology detects technical field, provides an OCT scanning device and ophthalmology OCT equipment, OCT scanning device includes glasses formula support and locates the probe of glasses formula support, the probe is connected with OCT imaging system via the photoelectric connection line. The probe is arranged on the glasses type support, and the probe is connected with the OCT imaging system through the photoelectric connecting wire, so that the whole OCT scanning device can be worn on the head of a detected person to detect the eyes of the detected person, namely, the OCT scanning device does not need to be held by the hand of the detected person to detect the eyes of the detected person, the operation is simple and convenient, at the moment, the OCT scanning device keeps static or synchronous movement with the head of the detected person, the error caused by shaking of the OCT scanning device held by the hand of the detected person can not be brought in, the error caused by head deflection of the detected person can not be brought in, and the detection precision is favorably improved. Meanwhile, the OCT scanning device is not limited by the body position of the detected person, namely, the detected person and the detected person are allowed to move body parts in the detection process, and the fatigue of the detected person and the detected person is reduced.

Description

An OCT scanning device and ophthalmic OCT equipment

technical field

The utility model belongs to the technical field of ophthalmology detection, in particular to an OCT scanning device and ophthalmic OCT equipment. the

Background technique

At present, ophthalmic OCT (Optical Coherence Tomography, Optical Coherence Tomography) has become one of the most important means of diagnosing ophthalmic diseases. Existing ophthalmic OCT equipment is bulky and needs to be operated in a special diagnostic room, which is not easy to carry. During ophthalmic examination, the probe needs to be accurately aimed at the part to be detected, so as to obtain an OCT image of the part to be detected. In the prior art, the head of the eye to be detected is usually fixed on a chin rest. This method will cause the fatigue of the user's neck and eyes, and cannot detect the person who cannot sit or distort the neck. Keeping children in a difficult posture also limits the application of this method in children's eye detection. In addition, there is also a method of using a hand-held probe close to the eye of the test (refer to patent document 201220352431.0). Keep the body, especially the head still, at the same time, this method will affect the accuracy of the test results due to the hand shake of the tester (operator holding the instrument). the

Utility model content

The purpose of the embodiment of the utility model is to provide an OCT scanning device which is convenient for detection and has high detection accuracy. the

The embodiment of the utility model is realized in the following way. An OCT scanning device includes a glasses-type bracket and a probe arranged on the glasses-type bracket, and the probe is connected to the OCT imaging system through a photoelectric connection line. the

Another object of the embodiment of the present utility model is to provide an ophthalmic OCT device, including an OCT imaging system, and the ophthalmic OCT device adopts the above-mentioned OCT scanning device. the

In the embodiment of the utility model, the probe is set on the glasses-type bracket, and the probe is connected to the OCT imaging system through a photoelectric connection line, so that the entire OCT scanning device can be worn on the head of the subject to detect his eyes, that is, without The inspector's hand-held OCT probe is used to detect the eyes of the inspected, which is easy to operate. At this time, the OCT scanning device will keep still or move synchronously with the inspected head, and will not bring into the eyes caused by the shaking of the OCT probe held by the inspector. The error caused will not be brought into the error caused by the deflection of the head of the detected person, which is beneficial to improve the detection accuracy. At the same time, the OCT scanning device is not limited by the body position of the examinee, which allows the examinee and the examiner to move their body parts during the detection process, reducing the fatigue of the examiner and the examinee. the

Description of drawings

Fig. 1 is the structural representation of the OCT scanning device that the utility model embodiment provides;

Fig. 2 is the structural representation of the probe that the utility model embodiment provides;

Fig. 3 is a schematic structural view of the base provided by the embodiment of the present invention. the

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model. the

In the embodiment of the utility model, the probe is set on the glasses-type bracket, and the probe is connected to the OCT imaging system through a photoelectric connection line, so that the entire OCT scanning device can be worn on the head of the subject to detect his eyes, that is, without The inspector's hand-held OCT probe is used to detect the eyes of the inspected, which is easy to operate. At this time, the OCT scanning device will keep still or move synchronously with the inspected head, and will not bring into the eyes caused by the shaking of the OCT probe held by the inspector. The error caused will not be brought into the error caused by the deflection of the head of the detected person, which is beneficial to improve the detection accuracy. At the same time, the OCT scanning device is not limited by the position of the subject, which allows the subject and the examiner to move their body parts during the detection process, reducing the fatigue of the examiner and the subject. the

The realization of the utility model is described in detail below in conjunction with specific embodiments. the

As shown in FIG. 1 , the OCT scanning device provided by the embodiment of the present invention includes a glasses-type support 1 and a probe 2 provided on the glasses-type support 1 , and the probe 2 is connected to the OCT imaging system through a photoelectric connecting line 3 . Here, the probe 2 is set on the glasses-type support 1, and the probe 2 is connected to the OCT imaging system via the photoelectric connecting line 3, so that the entire OCT scanning device can be worn on the head of the subject to detect his eyes, that is There is no need for the tester to hold the OCT probe to detect the eyes of the testee, and the operation is simple. At this time, the OCT scanning device will keep still or move synchronously with the head of the testee, and will not bring the OCT probe held by the tester to shake. The error caused will not be brought into the error caused by the deflection of the head of the detected person, which is beneficial to improve the detection accuracy. At the same time, the OCT scanning device is not limited by the body position of the examinee, which allows the examinee and the examiner to move their body parts during the detection process, reducing the fatigue of the examiner and the examinee. the

In the embodiment of the utility model, the glasses-type support 1 includes a support 11 for supporting the probe 2, a force-bearing belt 12 behind the head, and a force-bearing side arm for connecting the force-bearing belt 12 and the support 11 behind the head. 13. Usually, there are two stressed side arms 13 to keep stable. the

Wherein, the support 11 has a slot (not shown) for sliding and positioning of the probe 2, the probe 2 has a base 21 slidingly fitted with the slot, and the base 21 is provided with a pair of The first optical component for scanning and detecting the fundus of the eye, and the second optical component for guiding the eyeball 18 of the subject's eye to rotate and monitoring the pupil of the subject's eye. Because the probe 2 can slide in the slot and be fixed at a desired position, only one probe 2 can be provided in the OCT scanning device to inspect the left and right eyes of the subject respectively, and the cost of materials is low. And because the same probe 2 is used to check the left and right eyes of the subject, the check result has more reference value. Of course, because the position of the probe 2 can be adjusted, the OCT scanning device is especially suitable for detecting subjects with different head shapes. the

As shown in Figure 2, the photoelectric connection line 3 is mainly composed of the optical fiber 4 that guides the forward detection light into the probe 2 and the reverse detection light out of the probe 2, and transmits the image signal collected by the image sensor 5 to the monitor. It consists of a signal line 6 and a power line 7 for controlling the light intensity and distribution of the gaze light, wherein the reverse detection light is generated after the forward detection light scans the fundus of the eye to be inspected and carries the required information probe light. The aforementioned OCT imaging system collects the information carried by the reverse detection light through the optical fiber 4, and processes the information to form a detection pattern. In addition, the inspector can perform probe focusing and fundus scanning operations according to the pupil video displayed on the monitor. the

Preferably, the first optical assembly includes a MEMS micromirror 8 for adjusting the detection light to scan the fundus of the subject's eye, and the second optical assembly includes a light source 9 for providing gaze light and for Adjust the gaze light so that it enters the mirror 10 of the subject's eye at the same time as the detection light, and the reflection mirror 10 is provided with a through hole 15 for the forward detection light, reverse detection light and imaging light to pass through, wherein the The imaging light is gaze light and/or ambient light returning from the pupil of the subject's eye and passing through the through hole 15 . Here, setting the through hole 15 not only makes it easy to extract the imaging light, but also minimizes the light attenuation of the forward detection light, reverse detection light and imaging light, which is very beneficial for detection and imaging. In addition, the OCT scanning device replaces the XY vibrating mirror with a MEMS micromirror 8 with extremely small size and light weight, so that it has a higher integration level and better portability. The MEMS micromirror 8 is electrically connected and communicated with the outside through the circuit board, and the circuit for electrical connection and communication here is integrated in the aforementioned photoelectric connection line 3 . the

Usually, the reverse detection light and the imaging light are projected to the dichroic mirror 16 after being reflected by the MEMS micromirror 8, wherein the reverse detection light enters the optical fiber 4 after being transmitted through the dichroic mirror 16, and the imaging light passes through the optical fiber 4. The dichroic mirror 16 reflects to the image sensor 5 . It should be noted that the forward detection light can directly pass through the dichroic mirror 16 . The use of the dichroic mirror 16 here greatly simplifies the structure of the OCT scanning device. the

Specifically, a focusing lens 17 is set between the MEMS micromirror 8 and the reflector 10, and an ophthalmoscope 19 is set along the direction in which the gaze light enters the eyeball 18 to be inspected. The fiber coupler 22 and the focusing lens 23 are adjusted and projected to the dichroic mirror 16 , and the forward detection light is adjusted by the focusing lens 23 to be parallel light that facilitates propagation. Wherein, the image sensor 5 is preferably a micro-CCD device with an imaging lens 24 previously provided, and the MEMS micromirror 8 is preferably a MEMS two-dimensional scanning galvanometer. At this time, the MEMS micromirror 8 can be controlled so that the forward detection light can be line-scanned from different positions of the fundus, so that the detection is more complete. Generally, the forward detection light and the reverse detection light are infrared light of the same wavelength, and the light source 9 has a plurality of LEDs. If a plurality of LEDs form an array, the LEDs at different positions can be lighted as required to form gaze lights of different positions or shapes (that is, the light intensity and/or distribution of gaze lights are different) to guide the fixation point position of the detected eye. Further, the bottom of the base 21 is provided with a card seat 25 close to the eye to be inspected during detection. The card seat 25 cooperates with the aforementioned card slot, and its length, width, and height are all less than or equal to 3 cm, as shown in FIG. 3 . the

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models. the

Claims (9)

1. an OCT scanning means, is characterized in that, described OCT scanning means comprises spectacle support and the probe of being located at described spectacle support, and described probe is connected with OCT imaging system via photoelectric connecting wire.

2. OCT scanning means as claimed in claim 1, is characterized in that, described spectacle support comprises forced belt after bearing in order to supporting probe, brain and in order to connect the stressed side arm of forced belt and bearing after described brain.

3. OCT scanning means as claimed in claim 2, it is characterized in that, described bearing has for probe slip the draw-in groove to its location, described probe has the pedestal being slidably matched with draw-in groove, is provided with the first optical module and the second optical module for guiding described tested eye eyeball to make it rotation and the pupil of described tested eye is monitored that tested eye optical fundus is scanned and detected in described pedestal.

4. OCT scanning means as claimed in claim 3, it is characterized in that, described photoelectric connecting wire mainly imports described probe, oppositely surveys the optical fiber of popping one's head in described in light-output by forward being surveyed to light, the picture signal of imageing sensor collection is reached to the holding wire of monitor and watches light attentively and make it the power line that light intensity and distribution change and form in order to control, and wherein said reverse detection light is that forward is surveyed the detection light that light produced and carried information needed after to the optical fundus scanning of tested eye.

5. OCT scanning means as claimed in claim 4, it is characterized in that, described the first optical module comprises in order to adjust detection light makes it the MEMS micro mirror that described tested eye optical fundus is scanned, described the second optical module comprises providing to be watched the light source of light attentively and makes it and the reflecting mirror of surveying light and enter simultaneously tested eyeball in order to watch light described in adjusting attentively, described reflecting mirror is provided with for forward and surveys light, oppositely surveys the open-work that light and imaging pass, and wherein said imaging is watched light and/or surround lighting attentively for what return to and pass described open-work from tested eye pupil hole.

6. OCT scanning means as claimed in claim 5, it is characterized in that, described reverse detection light and imaging are projected to dichroic mirror after the reflection of MEMS micro mirror, wherein this is oppositely surveyed light and enters optical fiber through described dichroic mirror transmission is laggard, this imaging through described dichroic mirror reflects to imageing sensor.

7. the OCT scanning means as described in claim 5 or 6, it is characterized in that, between described MEMS micro mirror and reflecting mirror, establish focusing lens, along described in watch the direction that light enters tested eyeball attentively and establish ophthalmoscope, described forward is surveyed light from optical fiber outgoing, be projected to dichroic mirror after fiber coupler and condenser lens adjustment, and described forward is surveyed light line focus lens and is adjusted to directional light.

8. OCT scanning means as claimed in claim 7, it is characterized in that, described imageing sensor is for being set as before the miniature CCD device of picture lens, and described MEMS micro mirror is MEMS two-dimensional scan galvanometer, described forward is surveyed light and is oppositely surveyed light and is infrared light, and described light source has a plurality of LED.

9. an ophthalmology OCT equipment, comprises OCT imaging system, it is characterized in that, described ophthalmology OCT equipment adopts the OCT scanning means as described in any one in claim 1～8.

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