CN117643511A

CN117643511A - Light source host and endoscope camera system

Info

Publication number: CN117643511A
Application number: CN202311744854.6A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Agile Medical Technology Suzhou Co ltd
Current assignee: Agile Medical Technology Suzhou Co ltd
Priority date: 2023-12-18
Filing date: 2023-12-18
Publication date: 2024-03-05

Abstract

The application relates to the field of medical endoscopes and provides a light source host and an endoscope shooting system, which comprises an optical fiber connector, wherein the optical fiber connector is arranged at a light outlet of the light source host and is provided with a notch; and the optical filter assembly comprises a first optical filter and a second optical filter, and the optical filter assembly is driven by the driving mechanism to enable the first optical filter and the second optical filter to be alternately positioned at the notch so as to allow light with different wavelength ranges to be respectively transmitted into the optical fiber. According to the method, the illuminating light with different wavelengths is alternately transmitted to the endoscope lens assembly through the light source host at different time, so that the image sensor alternately generates white light and fluorescent signals, the image quality of the formed fusion fluorescent image is improved, the number of the compound image sensors (only two are required to be arranged) in the endoscope camera can be reduced, the size of the lens assembly is reduced, and then the 4K, fluorescent and 3D functions of an endoscope can be realized.

Description

Light source host and endoscope camera system

Technical Field

The invention relates to the technical field of endoscope imaging, in particular to a light source host and an endoscope imaging system.

Background

With the continuous development of medical instruments, computer technology and control technology, minimally invasive surgery has been increasingly used with the advantages of small surgical trauma, short rehabilitation time, less pain of patients and the like. The minimally invasive surgery robot has the characteristics of high dexterity, high control precision, visual surgery images and the like, can avoid operation limitations, such as tremble of hands during filtering operation, and is widely applied to surgery areas such as abdominal cavities, pelvic cavities, thoracic cavities and the like.

At present, a minimally invasive surgery robot comprises a master control arm and a slave control arm, wherein the master control arm acquires operation signals of doctors and generates control signals of the slave control arm after the operation signals are processed by a control system, and the slave control arm executes surgery operation. In the robotic surgery process, a surgical instrument and a 3D endoscope are clamped from a manipulator arm, the surgical instrument enters the patient through a poking card inserted into a body surface incision of the patient, and the 3D endoscope provides monitoring images in the patient. Wherein the slave manipulator arm comprises a lens holding arm with an endoscope adapter mounted thereon for holding and moving the 3D endoscope to provide a proper viewing angle during surgery by the surgeon. Because of the diversity of clinical requirements, high-end functional endoscopes integrating 3D, 4K and fluorescence functions are becoming popular research objects in the field of medical instruments, and besides an image platform, a lens at the imaging front end is a key and most challenging ring on the whole link. How to design 4K double-way imaging on a lens with the diameter of only 10mm to simulate human eye stereoscopic vision and integrate a fluorescence function is always an industrial problem which restricts the industrialization of high-end functional endoscopes.

The positional and quantitative relationships between the optical components and the sensor assemblies are described in the publication No. CN103889353A, entitled "image capturing Unit in surgical instruments", wherein one implementation is that, as shown in FIG. 1, the image capturing Unit 302A, i.e., the endoscope, includes a lens assembly 301R, light passes from the lens assembly 301R through to a prism assembly 330R, the prism assembly 330R reflects a portion of the light into the underlying sensor 310R, another portion passes through, the transmitted light passes through after passing through the lens 350R to a reflection assembly 340R, and the reflection assembly 340R reflects this portion of the light into another sensor 315R that is parallel to the underlying sensor 310R, described herein as a structure above the platform 312 (i.e., PCB), the structure below the platform 312 being symmetrically disposed with respect to the upper. This arrangement requires the placement of the next four sensors (310R, 315R, 310L, and 315L) in the endoscope to achieve 3D, fluorescence functionality.

However, the above structure for realizing the 3D and fluorescent functions has the following problems that, since the two light components separated from the prism assembly are the same, if the fluorescent function is to be realized, a visible light/fluorescent light source is required to be adopted, or a composite light source is adopted and a specific optical filter is arranged on the image sensor, and the arrangement not only increases the complexity of the structure of the lens end, but also occupies a large space to a certain extent; the arrangement of four sensors (especially 4K) is also disadvantageous for saving lens space and increases production and assembly costs.

Disclosure of Invention

The embodiment of the application provides a light source host computer and endoscope camera system, can reduce the quantity that sets up compound image sensor (only need set up two) in the endoscope camera to reduce the size of camera lens subassembly, and then can realize 4K, fluorescence, the 3D function of endoscope.

According to a first aspect of embodiments of the present application, there is provided a light source host, including:

the optical fiber connector is arranged at the light outlet of the light source host and is provided with a notch;

and the optical filter assembly comprises a first optical filter and a second optical filter, and the optical filter assembly is driven by the driving mechanism to enable the first optical filter and the second optical filter to be alternately positioned at the notch so as to allow light with different wavelength ranges to be transmitted into the optical fiber respectively.

In one possible implementation manner, the optical filtering assembly includes a support frame, and the plurality of first optical filtering pieces and the plurality of second optical filtering pieces are arranged on the support frame and are sequentially staggered around the center of the support frame;

the driving mechanism is connected with the center of the supporting frame and is used for driving the supporting frame to rotate.

In one possible implementation manner, a light blocking member is disposed between adjacent first and second optical filters along a rotation direction of the support frame.

In one possible implementation, the first filter is a visible light filter and the second filter is a near infrared filter.

In a possible implementation, the shape of the visible light filter and the near infrared light filter is adapted to the shape of the light outlet;

or, along the rotation direction of the support frame, the shape of the visible light filter and/or the near infrared light filter is arc-shaped.

In one possible implementation, the visible light filter allows visible light transmission at wavelengths between 390nm and 650 nm;

the near infrared filter allows near infrared light having a wavelength of 650nm to 940nm to transmit.

In one possible implementation, the support frame is provided with at least one heat dissipation fin, and the heat dissipation fin protrudes out of the surface of the support frame.

In one possible implementation, a plurality of the heat dissipation fins are arranged at intervals around the center of the support frame;

the radiating fins are located on one side, facing the light outlet, of the supporting frame.

In one possible implementation manner, the front projection view of the radiating fins along the axial direction of the support frame is arc-shaped, and the concave arc surface of the radiating fins is windward when the support frame rotates.

In a possible implementation manner, a part of the radiating fin extends between the adjacent first optical filter and the second optical filter, and the protruding height of the radiating fin is smaller than the vertical distance from the support frame to the light outlet;

or, the radiating fin is arranged between the inner side edge of the first optical filter or the second optical filter and the center of the support frame, and the protruding height of the radiating fin is larger than or equal to the vertical distance from the support frame to the light outlet.

According to a second aspect of the embodiments of the present application, there is provided an endoscopic imaging system, including the light source host described in the above embodiments, and,

The lens assembly comprises an optical component and an optical chip module, wherein the optical component corresponds to the imaging port;

the optical component is used for transmitting a first optical signal and a second optical signal entering from the imaging port to the optical chip module, and the optical chip module is used for converting the collected optical signals into electric signals.

In one possible implementation, the optical chip module includes a circuit board, a first image sensor and a second image sensor, where the first image sensor and the second image sensor are respectively located on opposite surfaces of the circuit board.

In one possible implementation, the first image sensor corresponds to a first imaging optical path, and the second image sensor corresponds to a second imaging optical path;

the optical component comprises a first lens, a second lens, a first reflecting mirror and a second reflecting mirror, and the first lens and the first reflecting mirror are positioned in the first imaging light path; the second lens and the second mirror are located in the second imaging optical path.

In one possible implementation, the first image sensor and the second image sensor are 4K-complex image sensors.

In a possible implementation manner, the alternating speed of the first optical filter and the second optical filter at the light outlet corresponds to the frequency of the optical chip module for collecting the optical signal.

According to the light source host and the endoscope camera system, illumination light with different wavelengths is transmitted to the endoscope lens assembly alternately at different times through the light source host, so that white light and fluorescent signals are alternately generated by the image sensor, the image quality of a formed fusion fluorescent image is improved, the number of the compound image sensors (only two are required to be arranged) in the endoscope camera can be reduced, the size of the lens assembly is reduced, and then the 4K, fluorescent and 3D functions of an endoscope can be realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, 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 the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic view of an endoscope provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a lens assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of a lens assembly according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a light source host according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a light source host according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of a disassembled structure of a light source host according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a filter assembly according to an embodiment of the present disclosure;

FIG. 9 is a second schematic diagram of a filter assembly according to an embodiment of the present disclosure;

FIG. 10 is a third schematic diagram of a filter assembly according to an embodiment of the disclosure;

FIG. 11 is a schematic diagram of an optical fiber structure and a light outlet according to an embodiment of the present disclosure;

FIG. 12 is a second schematic diagram of an optical fiber structure and a light outlet according to an embodiment of the present disclosure;

fig. 13 is a schematic structural view of an endoscopic imaging system provided in an embodiment of the present application.

Reference numerals:

10. a lens assembly;

100. an outer sleeve; 101. a receiving chamber; 1011. a first imaging optical path; 1012. a second imaging light path; 102. an illumination port; 103. an imaging port;

200. An optical component; 211. a first lens; 212. a second lens; 221. a first mirror; 222. a second mirror;

300. an optical chip module; 310. a circuit board; 321. a first image sensor; 322. a second image sensor; 323. a 4K composite image sensor;

400. a fixing seat;

500. an illumination fiber;

600. an endoscope; 601. a control handle; 602. a data optical fiber;

700. a light source host; 710. an optical fiber connector; 711. a notch; 720. a display screen; 730. a light filtering component; 731. a support frame; 732. a first filter; 733. a second filter; 734. a heat radiation fin; 740. a driving mechanism; 750. and a light outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

In this specification, numerous specific details are set forth in some places. It is understood, however, that embodiments of the invention may be practiced without these specific details. Such detailed description is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims. Well-known structures, circuits, and other details have not been shown in detail in order not to obscure the gist of the present invention.

In this specification, the drawings show schematic representations of several embodiments of the invention. However, the drawings are merely schematic, and it is to be understood that other embodiments or combinations may be utilized and that mechanical, physical, electrical and step changes may be made without departing from the spirit and scope of the present invention.

The terminology used herein below is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. While the device may be otherwise oriented (e.g., rotated 90 deg. or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As used herein, "a" and "an" in the singular are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

The term "object" generally refers to a component or group of components. Throughout the specification and claims, the terms "object," "component," "portion," "part" and "piece" are used interchangeably.

The terms "instrument," "surgical instrument," and "surgical instrument" are used herein to describe a medical device, including an end effector, configured to be inserted into a patient and used to perform a surgical or diagnostic procedure. The end effector may be a surgical tool associated with one or more surgical tasks, such as forceps, needle holders, scissors, bipolar cautery, tissue stabilizer or retractor, clip applier, stapling apparatus, imaging apparatus (e.g., endoscope or ultrasound probe), and the like. Some instruments used with embodiments of the present invention further provide an articulating support (sometimes referred to as a "wrist") for a surgical tool such that the position and orientation of the end effector can be manipulated with one or more mechanical degrees of freedom relative to the instrument shaft. Further, many end effectors include functional mechanical degrees of freedom such as open or closed jaws or knives that translate along a path. The instrument may also contain stored (e.g., on a PCBA board within the instrument) information that is permanent or updateable by the surgical system. Accordingly, the system may provide for one-way or two-way information communication between the instrument and one or more system components.

The term "mated" may be understood in a broad sense as any situation in which two or more objects are connected in a manner that allows the mated objects to operate in conjunction with each other. It should be noted that mating does not require a direct connection (e.g., a direct physical or electrical connection), but rather, many objects or components may be used to mate two or more objects. For example, objects a and B may be mated by using object C. Furthermore, the term "detachably coupled" or "detachably mated" may be interpreted to mean a non-permanent coupling or mating situation between two or more objects. This means that the detachably coupled objects can be uncoupled and separated such that they no longer operate in conjunction.

Finally, the terms "or" and/or "as used herein should be interpreted as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means any one of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; A. b and C. An exception to this definition will occur only when a combination of elements, functions, steps or acts are in some way inherently mutually exclusive.

Summary of Master-slave teleoperated laparoscopic surgical robots

Endoscopic surgical robots typically include a doctor control platform, a patient surgical platform, and an image platform, where a surgeon sits on the doctor control platform, views two-or three-dimensional images of a surgical field transmitted by a scope placed in a patient, and manipulates movements of a robotic arm on the patient surgical platform, as well as surgical instruments or scopes attached to the robotic arm. The mechanical arm is equivalent to an arm simulating a human, the surgical instrument is equivalent to a hand simulating the human, and the mechanical arm and the surgical instrument provide a series of actions simulating the wrist of the human for a surgeon, and meanwhile tremble of the human hand can be filtered.

The patient surgical platform includes a chassis, a column, robotic arms connected to the column, and one or more surgical instrument manipulators at an end of a support assembly of each robotic arm. A surgical instrument and/or endoscope is removably attached to the surgical instrument manipulator. Each surgical instrument manipulator supports one or more surgical instruments and/or a scope that are operated at a surgical site within a patient. Each surgical instrument manipulator may be permitted to provide the associated surgical instrument in a variety of forms that move in one or more mechanical degrees of freedom (e.g., all six cartesian degrees of freedom, five or fewer cartesian degrees of freedom, etc.). Typically, each surgical instrument manipulator is constrained by mechanical or software constraints to rotate the associated surgical instrument about a center of motion on the surgical instrument that remains stationary relative to the patient, which is typically located where the surgical instrument enters the body and is referred to as a "telecentric point".

The image platform typically includes one or more video displays having video image capturing functionality (typically endoscopes) and for displaying surgical instruments in the captured images. In some laparoscopic surgical robots, the endoscope includes optics that transfer images from the patient's body to one or more imaging sensors (e.g., CCD or CMOS sensors) at the distal end of the endoscope, which in turn transfer the video images to a host computer of an image platform by photoelectric conversion or the like. The processed image is then displayed on a video display for viewing by an assistant through image processing.

The physician control platform may be at a single location in a surgical system consisting of an endoscopic surgical robot or it may be distributed at two or more locations in the system. The remote master/slave operation may be performed according to a predetermined control degree. In some embodiments, the physician control platform includes one or more manually operated input devices, such as a joystick, exo-skeletal glove, power and gravity compensation manipulator, or the like. The input devices collect operation signals of a surgeon, and control signals of the mechanical arm and the surgical instrument manipulator are generated after the operation signals are processed by the control system, so that remote control motors on the surgical instrument manipulator are controlled, and the motors further control the movement of the surgical instrument.

Typically, the force generated by the teleoperated motor is transmitted via a transmission system, transmitting the force from the teleoperated motor to the end effector of the surgical instrument. In some teleoperated surgical embodiments, the input device controlling the manipulator may be located remotely from the patient, either in or out of the room in which the patient is located, or even in a different city. The input signal of the input device is then transmitted to the control system. Those familiar with tele-manipulation, tele-control and tele-presentation surgery will appreciate such systems and components thereof.

In the related art, the lens structure adopted in realizing 3D, fluorescence and 4K is complex, and the realization can be realized only by arranging four 4K image sensors, and the 4K image sensors are large in size, so that the lens space is not beneficial to saving, the assembly is difficult, and the production cost is not beneficial to control.

The optical components in the following examples may be understood as optical elements, mainly playing the role of imaging, for example, lenses, prisms, mirrors, etc., and may be freely combined according to actual use conditions, and are not particularly limited herein.

FIG. 2 is a schematic view of an endoscope provided in an embodiment of the present application; fig. 3 is a schematic structural diagram of a lens assembly according to an embodiment of the present disclosure; fig. 4 is a schematic cross-sectional structure of a lens assembly according to an embodiment of the present application.

In view of the above problems, referring to fig. 2, an embodiment of the present application first provides a lens assembly disposed at a distal end of an endoscope 600, which may include an outer sleeve 100, an optical component 200, and an optical chip module 300.

The outer end face of the outer sleeve 100 comprises an illumination port 102 and an imaging port 103, wherein the illumination port 102 is connected with a light source and is used for periodically and alternately emitting first-type light and second-type light; an optical component 200, disposed on the outer sleeve 100 and corresponding to the imaging port 103, for transmitting the reflected first optical signal and second optical signal (which may be understood as light with signals after the first type of light and the second type of light are reflected); the optical chip module 300 is disposed on the outer sleeve 100, and includes two 4K composite image sensors 323, wherein the two 4K composite image sensors 323 are respectively corresponding to the optical component 200,4K, and the optical chip module 323 is configured to collect optical signals transmitted by the optical component 200 and convert the collected optical signals into electrical signals.

It will be appreciated that the lens assembly 10 in this example may be integrally formed with the endoscope 600, or the lens assembly 10 may be separately assembled and then detachably disposed at the distal end of the endoscope 600, without limitation.

The lens assembly 10 may have an outer sleeve 100 shared with the endoscope 600 outside, or may also be understood as an outer case, the outer sleeve 100 has a receiving cavity 101 inside, the receiving cavity 101 may be used for placing functional components such as the optical component 200 and the optical chip module 300, the outer end surface of the outer sleeve 100 is used for sealing the functional components inside the receiving cavity 101, and an illumination port 102 and an imaging port 103 are formed, and the illumination port 102 is mainly used for transmitting first-type light and second-type light emitted by a light source alternately in different times to a target object such as human tissue. The imaging port 103 transmits the first optical signal and the second optical signal reflected back by the object into the optical component 200.

In this example, the optical component 200 is mainly used to collect the reflected optical signals (the first optical signal and the second optical signal), which may be, for example, several lenses and prisms, where the light is reflected to the surface of the optical chip module 300 by the prisms after passing through the lenses, and the lenses may be made of glass or resin, so that the lenses made of glass or resin may be used in normal use, and the weight of the lens assembly 10 may be reduced under the condition of meeting the imaging quality.

To achieve the 4K, fused fluorescence imaging function, in one example, the first type of light is visible light (white light) and the second type of light is near infrared light. Specifically, the visible light and the near infrared light can be alternately irradiated to a target such as a human tissue through the illumination port 102 at different times. When the visible light is collected by the K-complex image sensor 323, the collected visible light signal can be converted into an electrical signal (color image information) near infrared light as excitation light to excite a fluorescent substance (e.g., a contrast agent) on the target object, so that the fluorescent region on the target object shows a specific color, such as green, and then the fluorescent signal emitted therefrom enters the optical component 200, that is, the optical signal collected by the 4K-complex sensor in the optical chip module 300 is sequentially white light-fluorescence-white light-fluorescence. The 4K composite image sensor 323 can convert the collected optical signal into an electrical signal (image information) and transmit the electrical signal to the back-end image processing module, and the image processing module can fuse the color image and the fluorescence image received in sequence, so that a specific area green of the target object can be formed, and the other areas are full-colored 4K and have high-quality images with the function of fusion fluorescence.

If a separate color image or fluorescence image is required, the illumination port 102 may be made to irradiate visible light or near infrared light to the target object for a long time, so that the light signal collected by the 4K composite image sensor 323 during a period of time is a white light signal or a fluorescence signal. The imaging image mode can be specifically adjusted by controlling a key on the handle 601, which can be a color image mode, a fluorescence image mode, and a visible light fusion fluorescence image mode.

In this example, two 4K composite image sensors 323 are provided, and then two corresponding optical components 200 may be provided, so as to achieve a 3D imaging effect, and by combining the 4K composite image sensors 323 and the visible light signals and the fluorescent signals that alternately enter the optical components 200, the imaging of the lens assembly 10 can achieve the functions of 3D, 4K and fluorescent fusion imaging, and the quality of the finally output image can be greatly improved.

Two different lights input to a target object such as human tissue can be obtained at a light source end, for example, a light filter capable of obtaining two different lights (visible light and near infrared light) is arranged at a light outlet of the light source, the two light filters can be closely arranged, then the two light filters are driven by a linear motor to reciprocate at the light outlet, so that the lights transmitted into the optical fiber are lights with different wavelengths, and the visible light and the near infrared light are alternately transmitted to the target object at different times, the moving speed of the linear motor can be set in cooperation with the period of collecting light signals by the 4K composite image sensor 323, for example, the visible light filter is positioned between the light outlet 750 and the optical fiber in the shutter opening time range of the first 4K composite image sensor 323, so that the visible light (white light) can be irradiated on the target object, and then the visible light (white light) is reflected into the 4K composite image sensor 323; in the shutter open time range of the second 4K composite image sensor 323, a near infrared filter is located between the light outlet and the optical fiber to irradiate near infrared light on the target object, and then the excited fluorescence is reflected into the 4K composite image sensor 323 and is cycled. Of course, the same white light signal or fluorescence signal may be received within the shutter open time range of the two-time 4K composite image sensor 323, and this arrangement can reduce the running speed of the linear motor, and still maintain high-quality image output of the 3D, 4K and fusion fluorescence functions.

The visible light filter can be remained between the light outlet and the optical fiber for a long time to finally realize 3D imaging of visible light, and the near infrared light filter can be remained between the light outlet and the optical fiber for a long time to finally realize 3D imaging of fluorescence.

In this embodiment of the application, the illumination port periodically alternately irradiates visible light and near infrared light (can be understood as white light and fluorescence) to the targets such as human tissues, so that the visible light and near infrared light are reflected to the lens assembly by the targets until being transmitted to the position of the 4K image sensor 323, the two kinds of light are fused by the rear processor to obtain a high-definition imaging chart with the 4K and fluorescence fusion function, the functions of 3D, fluorescence and 4K can be realized without too many 4K composite image sensors 323 (only two are required to be arranged), the whole lens assembly 10 is simple in structure, parts are fewer, the size of the lens assembly is reduced, and the cost and the assembly difficulty are reduced to a certain extent.

Since the distal end of the endoscope 600 is small in size, which is generally required to be controlled to about 10mm in diameter, and the lens provided at the distal end of the endoscope 600 is also required to be sized, it is necessary to consider the arrangement and the number of the optical components 200 and the 4K composite image sensor 323 inside thereof with emphasis. Since the 4K composite image sensor 323 has a large size, it may be disposed at the middle of the receiving chamber 101, and the optical member 200 may be disposed along one side of the 4K composite image sensor.

As shown in fig. 4, in some embodiments, the optical chip module 300 includes a circuit board 310, and two 4K composite image sensors 323 are respectively disposed on opposite surfaces of the circuit board 310; one of the two 4K composite image sensors 323 corresponds to a first imaging optical path 1011 and the other corresponds to a second imaging optical path 1012.

It will be appreciated that the circuit board 310 may be a PCBA board, may be placed in the middle of the housing cavity 101, and transmits the obtained signals to an external data processing module through the data optical fiber 602 or the like, and finally displays the processed images on the display screen 720.

In one example, the optical component 200 includes a first lens 211, a second lens 212, a first mirror 221, and a second mirror 222, the first lens 211 and the first mirror 221 being located in a first imaging optical path 1011, and the second lens 212 and the second mirror 222 being located in a second imaging optical path 1012.

For the sake of compact structure, two 4K composite image sensors 323 are disposed on opposite surfaces of the circuit board 310, respectively, as shown in fig. 4, one 4K composite image sensor 323 is disposed above the circuit board 310, the corresponding first mirror 221 and first lens 211 are also disposed above the accommodating chamber 101, the corresponding other 4K composite image sensor 323 is disposed below the circuit board 310, and the corresponding second mirror 222 and second lens 212 are also disposed below the accommodating chamber 101. In one example, a mounting block 400 is disposed within the outer sleeve 100, the mounting block 400 being configured to support the circuit board 310 and the optical component 200. The circuit board 310, the first mirror 221 and the second mirror 222 may be supported and fixed in the accommodating chamber 101 by the fixing base 400 or the like, so that shaking during probing of the endoscope 600 is prevented, thereby affecting the final imaging quality.

The 4K composite image sensor 323 provided in this example refers to an image sensor that can receive both white light signals and fluorescent signals, and the image sensor converts an optical signal image on a photosensitive surface into an electrical signal (image signal) in a proportional relationship with the optical signal image by using a photoelectric conversion function of a photoelectric device. And then the converted electric signals are sent to an external data processing module through a data optical fiber 602 and the like, and the external data processing module performs data fusion and other processes on the collected electric signals, so that 3D and 4K images fused with fluorescence are displayed on a display screen 720.

Further, the first imaging optical path 1011 and the second imaging optical path 1012 have the same light component, and only differ in position arrangement, which can facilitate the 3D effect of imaging the endoscope 600. In one example, the first lens 211 and the second lens 212 are in communication with the imaging port 103, respectively. Specifically, the imaging port 103 may be understood as the first lens 211 and the second lens 212 are exposed from the end surface of the outer sleeve 100. The first lens 211 and the second lens 212 may be objective lenses having a certain length, and can not only collect the light reflected by the target object into the accommodating cavity 101, but also amplify the real image of the target object, so that the medical staff can observe more clearly.

As shown in fig. 3, in some embodiments, the number of illumination ports 102 is two, the two illumination ends are symmetrically disposed on both sides of the imaging port 103, and the illumination ports 102 are connected to the light source through illumination fibers 500.

Specifically, in this example, two sets of illumination fibers 500 may be disposed to connect two illumination ports 102 and light sources correspondingly, and the illumination fibers 500 may pass through the sides of the optical component 200 and the optical chip module 300, as shown in fig. 3, the illumination ports may be designed into a semicircle shape adapted to the shape of the accommodating cavity 101, and the two sets of illumination fibers 500 are disposed opposite to each other, so as to reasonably utilize the space in the accommodating cavity 101, so that the distal end of the endoscope 600 is miniaturized as much as possible. The illumination port may be understood as an illumination optical fiber 500 exposed on an end surface of the endoscope 600 or the outer sleeve 100, so as to irradiate light onto a target object such as a human tissue, the other end of the illumination optical fiber 500 may be integrated on a control handle 601 at a proximal end of the endoscope 600, an optical fiber interface is provided on the control handle 601, and the illumination optical fiber 500 may be connected to a light source through an external optical fiber, thereby realizing a function of transmitting light emitted from the light source to the target object through the illumination optical fiber 500.

In order to reduce the size of the lens assembly, the number of the 4K composite image sensors 323 in the lens assembly 10 (the size thereof is larger) needs to be reduced as much as possible, and in order to realize the functions of 3D, fluorescence and 4K, an implementation manner of alternately irradiating visible light and near infrared light to the surface of the 4K composite image sensor at a certain frequency is provided in the above example, in order to realize that the visible light and the near infrared light can be alternately irradiated to a target object such as human tissue at different times, the present application example also provides a light source host 700, which includes a light source and a filter assembly 730, and the purpose of alternately transmitting light with different wavelengths into an optical fiber is realized through the filter assembly 730 disposed at a light outlet.

The light source host 700 not only can provide the periodically alternating first light signals and second light signals for the lens assembly 10 in the above embodiment, but also can be configured on any lens assembly 10 that needs to use the periodically alternating first light signals and second light signals to send out different light signals, thereby providing a plurality of possible imaging modes for the lens assembly 10, and further expanding the scope of use of the endoscope 600.

FIG. 5 is a schematic diagram of a light source host according to an embodiment of the present disclosure; FIG. 6 is a schematic diagram of a light source host according to an embodiment of the present disclosure; fig. 7 is a schematic diagram of a disassembled structure of a light source host according to an embodiment of the present application.

Referring to fig. 5, a light source host 700 provided by an example of the present application may include a fiber optic connector 710 and a filter assembly 730.

The optical fiber connector 710 is disposed at the light outlet 750 of the light source host 700, and the optical fiber connector 710 has a notch 711; the filter assembly 730 includes a first filter 732 and a second filter 733, and the filter assembly 730 is driven by the driving mechanism 740 such that the first filter 732 and the second filter 733 are alternately positioned at the notch 711 to allow light of different wavelength ranges to be transmitted into the optical fibers, respectively.

It will be appreciated that the light source host 700, i.e., the light source, emits primarily composite light over a wide range of wavelengths. The filter assembly 730 is disposed between the light outlet 750 of the light source host 700 and the illumination optical fiber 500, and may specifically be disposed at the notch 711 of the optical fiber connector 710, where the optical fiber connector 710 is disposed to facilitate the optical fiber to be plugged onto the light source host 700, so as to guide the light emitted by the light source host 700 onto the target object such as human tissue in the illumination optical fiber 500.

FIG. 11 is a schematic diagram of an optical fiber structure and a light outlet according to an embodiment of the present disclosure; fig. 12 is a schematic diagram of a second optical fiber structure and a light outlet according to an embodiment of the present disclosure. As shown in fig. 11 and 12, one of the purposes of the notch 711 at the optical fiber connector 710 is to dissipate heat from the light outlet 750, so as to increase the service life of the light source host 700. In this example, the filter assembly 730 may be disposed at the notch 711, and by having the first filter 732 and the second filter 733 in the filter assembly 730 sequentially present between the light source and the illumination optical fiber 500 (i.e., at the notch 711 of the optical fiber connector 710), the composite light is capable of transmitting the first type of light (visible light) into the illumination optical fiber 500 after passing through the first filter 732, and the composite light is capable of transmitting the second type of light (near infrared light) into the illumination optical fiber 500 after passing through the second filter 733, thereby achieving the function of alternately emitting the first type of light and the second type of light to an object such as human tissue at different times.

In order to make the first filter 732 and the second filter 733 alternately located at the position of the notch 711, a specific implementation manner may be to locate the first filter 732 and the second filter 733 in close proximity, and then drive the first filter 732 and the second filter 733 to reciprocate at the notch 711 by using a direct current motor. Of course, the first optical filters 732 and the second optical filters 733 may be alternately arranged in a ring shape, and then the ring-shaped optical filters are driven to rotate by a motor, so that the first optical filters 732 and the second optical filters 733 are sequentially rotated to the positions of the notches 711.

A specific way to reciprocate the first filter 732 and the second filter 733 may be that, in one example, the filter assembly 730 includes a mounting frame, and the first filter 732 and the second filter 733 are adjacently disposed to the mounting frame; a drive mechanism 740 is coupled to an end of the mount for moving the mount linearly such that the first filter 732 and the second filter 733 alternate between the light source and the illumination fibers 500.

It can be appreciated that, the mounting frame has at least two mounting holes, the first optical filter 732 and the second optical filter 733 are correspondingly mounted in the mounting holes, so that the light emitted from the light outlet 750 can enter the illumination optical fiber 500 after passing through the first optical filter 732 or the second optical filter 733, and the first optical filter 732 and the second optical filter 733 can have a certain interval, but the interval between the first optical filter 732 and the second optical filter 733 needs to be light-tight, or the mounting frame needs to be light-tight, so as to avoid transmitting composite light into the illumination optical fiber 500, and then be collected by the 4K composite image sensor 323 in the lens assembly 10, thereby being unfavorable for subsequent imaging quality.

Of course, the first filter 732 and the second filter 733 may be disposed closely, where the first filter 732 and the second filter 733 are located at the notch 711 at the same time, that is, the first type of light and the second type of light are transmitted into the illumination optical fiber 500 at the same time. In one example, the moving speeds of the first filter 732 and the second filter 733 correspond to the frequency at which the 4K composite image sensor 323 collects the optical signal. Specifically, the moving speed of the driving mechanism 740, for example, a linear motor, may be controlled as much as possible in a time range in which the 4K complex image sensor 323 opens the shutter to collect the optical signal such that only the first filter 732 or only the second filter 733 is located at the notch 711, in other words, when the first filter 732 and the second filter 733 are located at the notch 711 at the same time, the shutter of the 4K complex image sensor 323 has been closed and does not collect the optical signal.

Specifically, the 4K composite image sensor 323 may collect the first light signal (white light signal) in a time range when the light gate is opened once, and collect the second light signal (fluorescence signal) in a time range when the light gate is opened next time. The 4K composite image sensor 323 may collect the first optical signal in a time range of two continuous optical gate opening and collect the second optical signal in a time range of the next two optical gate opening.

A specific way to rotate the first filter 732 and the second filter 733 to the notch 711 in sequence may be that, in one example, the filter assembly 730 includes a supporting frame 731, where the plurality of first filters 732 and the plurality of second filters 733 are disposed on the supporting frame 731 and are sequentially staggered around the center of the supporting frame 731; the driving mechanism 740 is connected with the center of the supporting frame 731 and is used for driving the supporting frame 731 to rotate.

Specifically, the supporting frame 731 may be provided as a circular supporting plate, where a plurality of through holes are formed in the supporting plate, and the plurality of first optical filters 732 and the plurality of second optical filters 733 may be installed at the positions of the through holes according to the manners of the first optical filters 732, the second optical filters 733, and the first optical filters 732, the second optical filters 733, as shown in fig. 8, are sequentially staggered on the circular supporting frame 731, that is, the plurality of optical filters form a ring structure. In addition, in order to make the filter better filter out the light at the light outlet 750, the filter is disposed near the edge of the support frame 731, and when the filter rotates with the support frame 731 to the notch 711, the filter can cover the clear aperture between the light outlet 750 and the illumination fiber 500. In other words, the shape of the filter may be rectangular, circular, polygonal, etc., but it is necessary that the light emitted from the light outlet 750 to the illumination fiber 500 is completely transmitted from the filter.

In order to rotate the first filter 732 and the second filter 733 to the notch 711 in sequence, the driving mechanism 740 is connected to the center of the supporting frame 731, so that the plurality of first filters 732 and the plurality of second filters 733 on the supporting frame 731 can rotate to the notch 711 following the supporting frame 731. The driving mechanism 740 may be a motor, the rotation speed of the motor is related to the size of the supporting frame 731, and the number of filters is set on the motor, and the rotation speed of the motor is set to 450r/min, 900r/min, 1350r/min, 1800r/min if four filters (including two first filters 732 and two second filters 733) are set on the supporting frame 731, and the collection frequency of the 4K composite image sensor 323 may be 30Hz, 60Hz, 90Hz, 120 Hz. With the arrangement, a continuous 4K fluorescent fusion mode of the imaging of the endoscope 600 can be realized, so as to meet the imaging quality requirement of the endoscope 600.

Since the collection frequency of the 4K composite image sensor 323 is high, the rotation speed of the motor is often difficult to match to the collection frequency of the 4K composite image sensor 323, that is, the shutter of the 4K composite image sensor 323 is opened once, and the first filter 732 or the second filter 733 rotates to the position of the notch 711. Accordingly, the shutter of the 4K composite image sensor 323 may collect the first light signal transmitted through the rotation of the first filter 732 to the notch 711 or the second light signal transmitted through the rotation of the second filter 733 to the notch 711 in a time frame of two times of opening. In one example, a light blocking member is provided between adjacent first and second filters in a rotation direction of the support frame 731.

Specifically, the 4K composite image sensor 323 can not collect the optical signal due to the light blocking member in the middle of collecting the first optical signal and the second optical signal, that is, the collected image is a black image, the black image can be removed in the processing process of the rear-end image processing module, and a high-quality image after the first optical signal and the second optical signal are fused can be still formed. The light blocking member arrangement can also prevent the composite light emitted from the light outlet 750 from directly transmitting between the first filter 732 and the second filter 733, and affecting the image quality after being collected by the 4K composite image sensor 323. The light blocking member may be a light blocking member disposed between the first filter 732 and the second filter 733, or the support frame 731 between the first filter 732 and the second filter 733 has a light blocking function.

In some embodiments, the first filter 732 is a visible light filter and the second filter 733 is a near infrared light filter.

Specifically, the optical filter is an optical device for selecting a desired radiation band, that is, capable of transmitting a range of light waves, and in one example, the visible light filter is used for transmitting visible light (white light) with a wavelength of 390nm-650 nm; the near infrared filter is used for transmitting near infrared light with the wavelength of 650nm-940 nm. Of course, those skilled in the art can design a wavelength range different from the present range but intersecting the present range according to the characteristics of the image sensor and the light source.

Specifically, the first filter 732 transmits visible light having a wavelength of 390nm to 650nm and cuts off near infrared light having a wavelength of 650nm to 940 nm. The excitation light filter is opposite to the excitation light filter, and can transmit near infrared light with the wavelength of 650nm-940nm and cut off visible light with the wavelength of 390nm-650 nm.

FIG. 8 is a schematic structural diagram of a filter assembly according to an embodiment of the present disclosure; FIG. 9 is a second schematic diagram of a filter assembly according to an embodiment of the present disclosure; fig. 10 is a third schematic structural view of the filtering component according to the embodiment of the present application.

In one example, the shape of the visible light filter and the near infrared light filter are adapted to the shape of the light outlet 750.

Specifically, the visible light filter and the near infrared light filter may have the same shape as the light outlet 750, for example, may be circular, but may have a diameter larger than that of the light outlet 750 in order to cover the clear aperture between the light outlet 750 and the illumination fiber 500.

Instead of being circular, the visible light filter or the near infrared light filter may be provided in the same arc-shaped structure as the rotation locus, and in one example, the shape of the visible light filter and/or the near infrared light filter is arc-shaped along the rotation direction of the support frame 731. Specifically, the arc-shaped visible light filter and near infrared light filter are disposed, so that the residence time of the visible light filter or near infrared light filter at the notch 711 can be increased, that is, the visible light filter or near infrared light filter can be transmitted into the illumination optical fiber 500 until the 4K composite image sensor 323 can be acquired twice or more, and the quality of the imaging image can be maintained while the rotation speed of the driving mechanism 740 is reduced.

Because the heat at the light outlet 750 of the light source host 700 is higher, even if the notch 711 is provided at the light outlet 750, the heat cannot be well dissipated, and the service life of the light source can be affected by the continuous high temperature.

Based on the above-described problems, as shown in fig. 8, in some embodiments, at least one heat radiating fin 734 is provided on the supporting frame 731, and the heat radiating fin 734 is provided protruding from the surface of the supporting frame 731.

Specifically, the heat dissipation fin 734 is a sheet structure, and protrudes out of the surface of the supporting frame 731, and its maximum surface can be perpendicular to the rotation direction, and in the rotation process of the supporting frame 731, the maximum surface of the heat dissipation fin 734 is used as a windward surface, so that the air flow can be guided to the position of the light outlet 750 as much as possible, and the heat emitted from the light outlet 750 is taken away, so as to improve the service life of the light source.

In one embodiment, a plurality of heat dissipating fins 734 are spaced around the center of the support frame 731; and the plurality of radiating fins 734 are positioned on one side of the supporting frame 731 facing the light outlet 750.

It is understood that the plurality of heat dissipating fins 734 are spaced around the center of the supporting frame 731, and reference may be made to fan blade arrangement. In order to improve the heat dissipation effect on the light outlet 750, the heat dissipation fins 734 are located on a side surface of the support frame 731 facing the light outlet 750, and the plurality of heat dissipation fins 734 guide the air flow to the vicinity of the light outlet 750 along with the rotation of the support frame 731, so as to improve the heat dissipation effect on the light outlet 750.

To further enhance the heat dissipation effect on the light outlet 750, as shown in fig. 9 and 10, in some embodiments, the front projection view of the heat dissipation fin 734 along the axial direction of the supporting frame 731 is arc-shaped, and the concave arc surface of the heat dissipation fin 734 is windward when the supporting frame rotates.

Specifically, the plurality of radiating fins 734 are arranged on the supporting frame 731 in a C shape, as shown in fig. 9, the supporting frame 731 rotates anticlockwise along the a direction, the concave cambered surface of the radiating fins 734 can play a short-term wind gathering effect as a windward surface, and a large amount of air flow temporarily gathered on the radiating fins 734 can be guided along the cambered surface of the radiating fins 734 towards the direction close to the edge of the supporting frame 731, that is, a large amount of air flow flows to the position of the light outlet 750, so that heat is effectively dissipated for the light source, and the service life of the light source is prolonged.

As shown in fig. 9, in one example, a portion of the heat dissipation fin 734 extends between adjacent first and second filters 732, 733, and the protruding height of the heat dissipation fin 734 is less than the vertical distance from the support frame 731 to the light outlet 750.

Specifically, the heat dissipation fin 734 is an arc-shaped sheet structure, one end of the heat dissipation fin 734 is disposed near the center of the support frame 731, and the other end of the heat dissipation fin can extend along the radial direction of the support frame 731 until reaching a position between the first filter 732 and the second filter 733, and the heat dissipation fin 734 is located as close to the light source as possible, so that the heat dissipation is performed at a better light source, but the protruding height of the heat dissipation fin 734 is not too high due to the smaller distance from the side surface of the support frame 731 to the light outlet 750, and the protruding height can be between the distance from the support frame 731 to the light outlet 750, so as to avoid interference caused by rotation of the support frame 731.

In addition to the above-mentioned case that the heat dissipation fins 734 are long and short, as shown in fig. 10, in one example, the heat dissipation fins 734 are disposed between the inner edge of the first filter 732 or the second filter 733 and the center of the supporting frame 731, and the protruding height of the heat dissipation fins 734 is greater than or equal to the vertical distance from the supporting frame 731 to the light outlet 750.

Specifically, the plurality of heat dissipation fins 734 may be disposed in the annular region formed by the first filter 732 and the second filter 733, that is, the region from the side of the first filter 732 and the second filter 733 near the center of the supporting frame 731 to the center of the supporting frame 731, and compared with the case that the heat dissipation fins 734 are longer and shorter, the heat dissipation fins 734 in this example are shorter, so as to increase the protruding height of the heat dissipation fins 734, by which the air flow flowing to the light outlet 750 is increased, so that the heat dissipation effect on the light source is improved, and the heat dissipation fins 734 are spaced from the notch 711 by a certain distance, so that interference is not generated on the rotation of the supporting frame 731. However, the height of the heat dissipating fin 734 should not be too large, which would cause a large wind resistance, and affect the performance of the driving mechanism 740 for driving the supporting frame 731 to rotate. The specific heat dissipation fin 734 may be designed according to the actual light source power, the size of the supporting frame 731, the power of the driving mechanism 740, etc., and is not particularly limited herein.

The light source host 700 provided in this example can be used with a lens assembly 10 provided with any number of compound image sensors, for example, can be used with a lens assembly 10 provided with one compound image sensor, or can be used with a lens assembly 10 provided with four compound image sensors. However, in order to reduce the size of the distal end of the endoscope 600 and to achieve 3D, fusion fluorescence, and 4K imaging effects, the above-described light source host 700 is typically used in combination with the lens assembly 10 provided with two compound image sensors.

Referring to fig. 13, the embodiment of the present application also provides an endoscope 600 imaging system, which in this example may include an endoscope 600, a lens assembly 10, a light source host 700, and a filter assembly 730.

Endoscope 600 includes a distal end and a proximal end; the lens assembly 10 is arranged at the distal end of the endoscope 600, the outer end surface of the lens assembly 10 comprises an illumination port 102 and an imaging port 103, the illumination port 102 is used for periodically and alternately emitting first-class light and second-class light, the lens assembly 10 comprises an optical component 200 and an optical chip module 300, and the optical component 200 corresponds to the imaging port 103; the optical component 200 is configured to transmit the first optical signal and the second optical signal entering from the imaging port 103 to the optical chip module 300, and the optical chip module 300 is configured to convert the collected optical signal into an electrical signal.

The light source host 700, i.e. the light source, is connected to the illumination port 102 through the illumination fiber 500; the filter assembly 730 is disposed between the light source and the illumination optical fiber 500, the filter assembly 730 includes a first filter 732 and a second filter 733, and the filter assembly 730 is driven by the driving mechanism 740 such that the first filter 732 and the second filter 733 are alternately disposed between the light source and the illumination optical fiber 500 to allow light of different wavelength ranges to be transmitted to the illumination optical fiber 500, respectively.

It will be appreciated that the lens assembly 10 may be integrally formed at the distal end of the endoscope 600, or may be manufactured separately and then attached fixedly or detachably to the distal end of the endoscope 600. The proximal end of the endoscope 600 is provided with a control handle 601, the control handle 601 is convenient to hold to drive the endoscope 600 to move to a target object such as human tissue, and a plurality of keys can be further arranged on the control handle 601 to control the switching of the emission of a light source, an imaging mode and the like through the keys. The control handle 601 is further provided with ports connected to the data fiber 602 and the illumination fiber 500, and in use, the data fiber 602 can be plugged into the ports of the control handle 601 to transmit data signals obtained by the lens assembly 10 to the data processing module via the data fiber 602. The illumination fiber 500 is plugged into a port of the control handle 601 to alternately transmit the visible light and the near infrared light transmitted through the filter assembly 730 at the light source host 700 to the target object at different times through the illumination fiber 500.

The light source host 700 is provided with a light filtering component 730 at the light outlet 750, the light filtering component 730 filters the composite light emitted from the light outlet 750 through the first light filtering component 732 and the second light filtering component 733 thereon, and the driving mechanism 740 drives the first light filtering component 732 and the second light filtering component 733 to alternately appear at the light outlet 750, so as to achieve the purpose of alternately emitting light with different wavelengths into the illumination optical fiber 500 at different times, and in particular, periodically alternately transmitting visible light and near infrared light into the optical fiber. The manner in which the light source host 700 and the filter assembly cooperate may be understood with reference to the above examples, and will not be described in detail herein.

The optical component 200 and the optical chip module 300 in the lens assembly 10 are configured to receive a first optical signal and a second optical signal reflected by a target object, where the first optical signal is visible light, and the second optical signal is near infrared light (fluorescence). The structure and the principle of the specific optical component 200 and the optical chip module 300 can be understood according to the above embodiments, and will not be described herein.

In some embodiments, the optical chip module 300 includes a circuit board 310, a first image sensor 321 and a second image sensor 322, and the first image sensor 321 and the second image sensor 322 are respectively located on opposite surfaces of the circuit board 310.

Specifically, by providing two image sensors, such as a 4K composite image sensor, in the lens assembly 10, both visible light and fluorescence can be received, and then the two 4K composite image sensors correspond to two imaging light paths, thereby realizing the function of 3D imaging. In one example, the first image sensor 321 corresponds to a first imaging optical path 1011 and the second image sensor 322 corresponds to a second imaging optical path 1012; the optical component 200 includes a first lens 211, a second lens 212, a first mirror 221, and a second mirror 222, the first lens 211 and the first mirror 221 being located in a first imaging optical path 1011; the second lens 212 and the second mirror 222 are located in the second imaging optical path 1012.

Specifically, the first lens 211 and the second lens 212 may be provided as objective lenses with certain lengths, and the first reflecting mirror 221 and the second reflecting mirror 222 may be reflecting prisms, so that the optical signals transmitted along the axial direction of the endoscope 600 are mainly redirected, so as to irradiate onto the surface of the 4K composite image sensor located at the middle position, and the arrangement and the principle of action of the specific 4K composite image sensor and the lenses and the reflecting mirrors may be understood by referring to the above examples, which are not repeated herein.

In some embodiments, the alternating speed of the first filter 732 and the second filter 733 at the light outlet 750 corresponds to the frequency at which the optical chip module 300 collects the light signal, so as to implement a persistent white light mode, a persistent fluorescence mode, or a combination of white light and fluorescence mode.

In order to rotate the first filter 732 and the second filter 733 to the notch 711 in sequence, the driving mechanism 740 is connected to the center of the supporting frame 731. The driving mechanism 740 may be a motor, the rotation speed of the motor is related to the size of the supporting frame 731, and the number of optical filters is set on the motor, and the rotation speed of the motor is related to the collection frequency of the 4K composite image sensor 323 in the above embodiment, if the collection frequency of the 4K composite image sensor 323 is 30Hz, 60Hz, 90Hz, 120Hz, in order to make the optical signals collected by the 4K composite image sensor 323 sequentially be the first optical signal-second optical signal-first optical signal-second optical signal, then the rotation speed of the motor is set to 450r/min, 900r/min, 1350r/min, 1800r/min, so that the motor can drive one of the first optical filter 732 and the second optical filter 733 to reach the position of the notch in the time range of each shutter opening of the 4K composite image sensor 323, and the setting can ensure the quality of the image after the fusion of the visible light and the fluorescence to a great extent, and the final imaging effect can be improved. Of course, the motor may drive one of the first filter 732 and the second filter 733 to reach the position of the notch 711 within the time range of every two shutter openings of the 4K composite image sensor 323, and the arrangement not only can reduce the rotation speed of the motor, but also can keep the imaging effect in an acceptable state.

If a continuous white light mode or a fluorescent mode is required to realize the imaging of the endoscope 600, one of the first filter 732 and the second filter 733 can be controlled by the motor to stay at the position of the notch 711 continuously.

Finally, it should be noted that the above-mentioned embodiments are merely illustrative of the invention, and not limiting. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to be covered by the scope of the claims of the present invention.

Claims

1. A light source host, comprising:

2. The light source host of claim 1, wherein the light filtering assembly comprises a support frame, and the plurality of first light filtering members and the plurality of second light filtering members are arranged on the support frame and are sequentially staggered around the center of the support frame;

3. A light source host according to claim 2, wherein a light blocking member is provided between adjacent first and second filters in a rotation direction of the support frame.

4. A light source host as recited in claim 2 or claim 3, wherein the first filter is a visible light filter and the second filter is a near infrared light filter.

5. The light source host of claim 4, wherein the shape of the visible light filter and the near infrared light filter is adapted to the shape of the light outlet;

6. The light source host of claim 4, wherein the visible light filter allows transmission of visible light having a wavelength between 390nm and 650 nm;

7. A light source host according to claim 2 or 3, wherein the support frame is provided with at least one heat sink fin protruding from a surface of the support frame.

8. The light source host of claim 7, wherein a plurality of the heat dissipating fins are spaced around a center of the support frame;

9. A light source host as recited in claim 8, wherein an orthographic view of the heat sink fin along an axial direction of the support frame is arc-shaped, and wherein a concave arc surface of the heat sink fin is windward when the support frame rotates.

10. The light source host of claim 9, wherein a portion of the heat sink fin extends between adjacent first and second filters and an outward protruding height of the heat sink fin is less than a vertical distance from the support frame to the light exit;

11. An endoscopic camera system comprising the light source host according to any one of claims 1 to 10; the method comprises the steps of,

12. The endoscopic imaging system of claim 11, wherein the optical chip module comprises a circuit board, a first image sensor, and a second image sensor, the first and second image sensors being located on opposite surfaces of the circuit board, respectively.

13. The endoscopic imaging system of claim 12, wherein the first image sensor corresponds to a first imaging optical path and the second image sensor corresponds to a second imaging optical path;

14. The endoscopic imaging system of claim 12, wherein the first image sensor and the second image sensor are 4K composite image sensors.

15. The endoscopic imaging system of any of claims 11-14, wherein an alternating speed of the first filter and the second filter at the light outlet corresponds to a frequency at which the optical chip module collects light signals.