Fundus camera system with automatic focusing function

Abstract

The utility model discloses a fundus camera system with an automatic focusing function. The fundus camera system comprises a shell, a control circuit, an image reading unit, a fixed lens, a zoom lens group, a zoom driving device, a sensing unit and a light-emitting unit, after the sensing unit senses that the eyes are attached to an eyeshade of the fundus camera system, a sensing signal is output to the control circuit so as to start the light-emitting unit to be lightened, and meanwhile the zoom driving device is driven to enable the zoom lens set to move to conduct automatic focusing on the eyes. The focused retina imaging signal is focused and projected into the image reading unit through the fixed lens, the shot retina image signal is transmitted to the control circuit, and the retina image or data can be stored in the storage unit. The focusing system of the fundus camera system is redesigned, so that the fundus camera system can focus automatically, and image data of fundus can be shot more accurately.

Description

TECHNICAL FIELD

[0001] The utility model relates to an eye fundus camera, in particular to an eye fundus camera system capable of photographing the retina. BACKGROUND

[0002] The most important significance of fundus examination is to check whether the fundus has lesions, such as retinal detachment, optic neuritis, macular lesions, glaucoma, etc. In particular, the eye is the only place where blood vessels can be observed by the naked eye. Therefore, there are many cases in clinical practice where patients are found to have systemic diseases such as hypertension, diabetes, and autoimmune diseases through fundus examination.

[0003] In the past, the eye fundus camera system could not effectively capture whether the fundus had lesions because it did not have a focusing device.

[0004] Therefore, how to improve the automatic focusing device problem of the current eye fundus camera system so that the eye fundus camera system can capture accurate eye fundus image data is the main problem to be solved by the utility model. UTILITY MODEL CONTENTS

[0005] Therefore, the main purpose of the utility model is to redesign the focusing system of the eye fundus camera system so that the eye fundus camera system can automatically focus to capture more accurate eye fundus image data.

[0006] To achieve the above purpose, the utility model provides an eye fundus camera system with an automatic focusing function, comprising: a shell, a control circuit, an image reading unit, a fixed lens, a zoom lens group, a zoom driving device, a sensing unit and a light emitting unit. The front end of the shell has an eye shield, and the eye shield has a front lens. The control circuit is installed inside the shell. The image reading unit is installed inside the shell. The fixed lens is installed inside the shell and located in front of the image reading unit to project the focused image signal onto the image reading unit. The zoom lens group is installed inside the shell and located in front of the fixed lens and the front lens. The zoom driving device is installed inside the shell to drive the zoom lens group for focusing adjustment. The sensing unit is installed inside the shell and electrically connected to the control circuit to sense the eye against the eye shield. The light emitting unit is installed inside the shell and electrically connected to the control circuit to provide the light source required for focusing and illumination.

[0007] In an embodiment of the utility model, the control circuit further comprises a micro processing unit, a communication unit, a storage unit and a power supply unit. The communication unit is electrically connected with the micro processing unit to connect external electronic devices. The storage unit is electrically connected with the micro processing unit to store image data of the retina of the eye shot by the fundus camera system. The power supply unit provides power required by each unit and device.

[0008] In an embodiment of the utility model, the communication unit is a wireless module or a wired module.

[0009] In an embodiment of the utility model, the zoom lens group comprises a lens seat, the lens seat has a symmetrical upper shaft part on both sides, the two upper shaft parts are pivoted on two slide rods arranged in the shell, and the lens seat has a lower shaft part at the bottom, and the inner wall of the lower shaft part has a threaded surface.

[0010] In an embodiment of the utility model, one or more than two lens lenses are installed in the lens seat.

[0011] In an embodiment of the utility model, the zoom drive device is electrically connected with the control circuit and comprises a support seat, a transmission rod and a motor, the support seat is installed in the shell and located below the lens seat, the transmission rod is pivoted through the lower shaft part of the lens seat, the transmission rod is further pivoted on the support seat, and one end of the transmission rod is fixedly connected with the motor.

[0012] In an embodiment of the utility model, the front end of the shell is pivoted with a rotatable zoom lens group, the zoom lens group has a lens barrel, the front end of the lens barrel has the eye cover, the eye cover is provided with the front lens, one or more than two lens lenses are installed in the lens barrel, the outer surface of the lens barrel has a threaded surface, the threaded surface is screwed with the threaded part arranged at the front end of the shell, and the front end of the lens barrel has a rotating part exposed outside the shell.

[0013] In an embodiment of the utility model, a transmission rod is engaged with the threaded surface of the outer surface of the lens barrel, one end of the transmission rod is fixedly connected with a motor, and the motor is driven by the control circuit to drive the transmission rod to rotate the lens barrel to realize the automatic focusing mode.

[0014] In an embodiment of the utility model, the zoom lens group comprises a lens seat, a coil group, an annular magnet, at least one lens lens and two elastic elements, the lens seat is installed in the shell, the annular magnet is installed at the front end of the lens seat, the coil group is installed on the outer surface of the lens seat and adjacent to the annular magnet, the lens lens is arranged in the lens seat and the annular magnet, and one elastic element is arranged at the front end of the annular magnet and the rear side of the lens seat.

[0015] To achieve the above-mentioned purposes, the utility model provides a kind of fundus camera system with automatic focusing function, include: a fundus camera system and an electronic device.The fundus camera system includes: a shell, a control circuit, an image reading unit, a fixed lens, a zoom lens group, a zoom drive device, a sensing unit and a light emitting unit.The shell has an eyeshade at the front end, and the eyeshade has a front lens.The control circuit is installed inside the shell.The image reading unit is installed inside the shell.The fixed lens is installed inside the shell, and is located in the front position of the image reading unit, and the focused image signal is projected on the image reading unit.The zoom lens group is installed inside the shell, and is located in the front position between the fixed lens and the front lens.The zoom drive device is installed inside the shell to drive the zoom lens group for focusing adjustment.The sensing unit is installed inside the shell and electrically connected with the control circuit to sense the eye against the eyeshade.The light emitting unit is installed inside the shell and electrically connected with the control circuit to provide the light source required for focusing and illumination.The electronic device is electrically connected with the control circuit.

[0016] In an embodiment of the utility model, the electronic device is a fundus detector, a smart smartphone or a smart smartwatch.

[0017] In an embodiment of the utility model, the control circuit further includes a micro-processing unit, a communication unit, a storage unit and a power supply unit.The communication unit is electrically connected with the micro-processing unit and communicatively connected with the fundus detector.The storage unit is electrically connected with the micro-processing unit to store the image data of the retina of the eye shot by the fundus camera system.The power supply unit provides the power required by each unit and device.

[0018] In an embodiment of the utility model, the zoom lens group includes a lens seat, the two sides of the lens seat have a symmetrical upper shaft part, the two upper shaft parts are pivoted on two slide rods provided inside the shell; and a lower shaft part is provided at the bottom of the lens seat, and the inner wall of the lower shaft part has a threaded surface.

[0019] In an embodiment of the utility model, the zoom drive device is electrically connected with the control circuit and includes a support seat, a transmission rod and a motor; the support seat is installed inside the shell and located below the lens seat, the transmission rod is pivoted through the lower shaft part of the lens seat, the transmission rod is further pivoted on the support seat, and one end of the transmission rod is fixedly connected with the motor.

[0020] In an embodiment of the utility model, the shell front end is pivoted with a rotatable zoom lens group, the zoom lens group has a lens barrel, the lens barrel front end has the eye patch, the eye patch is equipped with the front lens, one or more than two lens lenses are installed in the lens barrel; in addition, the outer surface of the lens barrel has a threaded surface, the threaded surface is screwed with the threaded part arranged at the shell front end; again, the lens barrel front end has a rotating part exposed outside the shell.

[0021] In an embodiment of the utility model, a transmission rod is engaged with the threaded surface of the outer surface of the lens barrel, one end of the transmission rod is fixedly connected with a motor, the motor is driven by a control circuit, drives the transmission rod to rotate the lens barrel to rotate to carry out automatic focusing mode.

[0022] In an embodiment of the utility model, the zoom lens group includes a lens seat, a coil group, a ring magnet, at least one lens lens and two elastic elements; wherein the lens seat is installed inside the shell, the ring magnet is installed at the lens seat front end, the coil group is installed on the outer surface of the lens seat and adjacent to the ring magnet, the lens lens is arranged inside the lens seat and the ring magnet, and again, one elastic element is installed at the front end of the ring magnet and the rear side of the lens seat. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the schematic diagram of fundus camera system of first embodiment of the utility model;

[0024] Figure 2 It is the circuit block flow schematic diagram of fundus camera system of first embodiment of the utility model;

[0025] Figure 3 It is Figure 1 The action schematic diagram of automatic focusing of fundus camera system is carried out;

[0026] Figure 4 It is the schematic diagram of fundus camera system of second embodiment of the utility model;

[0027] Figure 5 It is the schematic diagram of fundus camera system of third embodiment of the utility model;

[0028] Figure 6 It is the schematic diagram of fundus camera system of fourth embodiment of the utility model;

[0029] Figure 7 It is the schematic diagram of fundus camera system of fifth embodiment of the utility model.

[0030] Marking explanation in drawing:

[0031] 100, 100a: fundus camera system

[0032] 10: Shell

[0033] 101, 202a: Eye patch

[0034] 102, 203a: Front lens

[0035] 103: Sliding bar

[0036] 104: Threaded section

[0037] 20, 20a, 20b: Zoom lens group

[0038] 201, 201b: Lens mount

[0039] 202: Upper shaft section

[0040] 203: Lower shaft section

[0041] 204, 204a, 204b: Lens elements

[0042] 30: Zoom drive device

[0043] 301: Support base

[0044] 302: Transmission rod

[0045] 303: Motor

[0046] 40: Control Circuit

[0047] 401: Microprocessor Unit

[0048] 402: Sensing Unit

[0049] 403: Light-emitting unit

[0050] 404: Communication Unit

[0051] 405: Storage Unit

[0052] 406: Power Supply Unit

[0053] 50: Fixed lens

[0054] 501: Fixture

[0055] 502: Lens

[0056] 60: Image Reading Unit

[0057] 201a: Lens tube

[0058] 205a: Threaded surface

[0059] 206a: Rotating part

[0060] 202b: Coil assembly

[0061] 203b: ring magnet

[0062] 205b: elastic element

[0063] 200: electronic device

[0064] 300: eye

[0065] 400: transmission line. DETAILED DESCRIPTION

[0066] The utility model will be further explained in connection with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0067] Please refer to Figure 1 , the first embodiment of the utility model fundus camera system schematic diagram. As shown in the figure: the utility model fundus camera system 100, including have; a shell 10, a zoom lens group 20, a zoom drive device 30, a control circuit 40, a fixed lens 50 and an image reading unit 60. Among them, the control circuit 40 drives the zoom drive device 30 to drive the zoom lens group 20 to automatically focus on the eye 300, so that the image reading unit 60 can read the image data of the retina of the eye 300.

[0068] The shell 10, its front end has at least one eye shield 101, the eye shield 101 is provided with a front lens 102, the eye shield 101 provides the eye 300 to stick close to. In the drawing, the front lens 102 is a filter lens.

[0069] The zoom lens group 20 contains a lens seat 201, the both sides of the lens seat 201 have a symmetrical upper shaft part 202, the two upper shaft parts 202 are pivoted on the two slide bars 103 arranged inside the shell 10. Another on the bottom of the lens seat 201 has a lower shaft part 203, the inner wall of the lower shaft part 203 has a threaded surface (not shown in the figure), and the threaded surface is driven by the zoom drive unit 40. In the drawing, one or more than two lens lenses 204 are installed in the lens seat 201.

[0070] The zoom drive device 30, electrically connected to the control circuit 40, includes a support base 301, a transmission rod 302, and a motor 303. The support base 301 is installed inside the housing 10 and located below the lens mount 201 of the zoom lens group 20. The transmission rod 302 passes through the lower shaft portion 203 of the lens mount 201 and is pivotally connected to the support base 301, so that one end of the transmission rod 302 is fixedly connected to the motor 303. When the motor 303 is driven by the control circuit 40, the motor 303 drives the transmission rod 302 to rotate, causing the transmission rod 302 to drive the lens mount 201 to slide on the slide bar 103 for automatic focus adjustment. In this diagram, the transmission rod 302 is a screw; the motor 303 is a stepper motor or a DC power supply motor.

[0071] The control circuit 40, installed inside the housing 10, includes at least a sensing unit 402, a light-emitting unit 403, and a communication unit 404. The sensing unit 402, installed inside the housing 10, outputs a signal to the control circuit 40 when it senses an eye 300 against the eye mask 101. The control circuit 40 then activates the light-emitting unit 403, illuminating the eye 300 on the eye mask 101. Simultaneously, it drives the zoom drive device 30 to move the zoom lens group 20, causing the zoom lens group 20 to move axially forward or backward to automatically focus on the eye 300.

[0072] The light-emitting unit 403 is installed inside the housing 10 and is activated by the control circuit 40 to project light onto the eye 300, thereby enabling the zoom lens group 20 to perform autofocus. In this diagram, the light-emitting unit 403 is a light-emitting diode.

[0073] The communication unit 404 is installed inside the housing 10 and is electrically connected to the control circuit 40. The communication unit 404 communicates with external electronic devices 200 (such as…). Figure 2 The communication unit 404 (shown) transmits dynamic or static images captured by the fundus camera system 100 to an external electronic device 200 for reception, enabling relevant individuals (doctors) or institutions (hospitals) to interpret the retinal images captured by the fundus camera system 100. In this diagram, the communication unit 404 is a wireless module or a wired module. The wireless module is a WIFI module or a Bluetooth module; the wired module is a connector-connected transmission line, and the connector is a TYPE-C connector.

[0074] It is worth mentioning that the retinal image captured by the fundus camera system 100 can be used to diagnose various common eye diseases 300, such as diabetic retinopathy, glaucoma, macular hole, macular pucker, hypertensive retinopathy, retinal medullary nerve fiber, retinal pigment degeneration, age-related macular degeneration, retinal vein occlusion, and pathological myopia.

[0075] The fixed lens 50 is a conventional technology installed inside the housing 10 and located behind the zoom lens group 20. After the zoom lens group 20 is automatically focused, the imaging image signal of the eye 300 is focused by the fixed lens 50 and projected onto the image reading unit 60 for the image reading unit 60 to read the retinal image data of the eye 300. In the figure, the fixed lens 50 has a fixed seat 501 inside which one or more than two lenses 502 are installed.

[0076] The image reading unit 60 is a conventional technology installed inside the housing 10 and located behind the fixed lens 50 and electrically connected to the control circuit 40. After the image reading unit 60 reads the image signal, the built-in signal conversion circuit (not shown in the figure) converts the analog signal into a digital signal output and outputs the signal to the control circuit 40 for storage or transmission to the external electronic device 200 for reception. In the figure, the image reading unit 60 is a charge-coupled device lens (CCD) or a complementary metal-oxide semiconductor lens (CMOS).

[0077] Please refer to Figure 2 The circuit block flow diagram of the fundus camera system of the first embodiment of the utility model is shown in the figure. As shown in the figure: the control circuit 40 of the utility model includes a micro processing unit 401 and a storage unit 405 in addition to the sensing unit 402, the light emitting unit 403, the communication unit 404, and the power supply unit 406 described above. The storage unit 405 is electrically connected to the micro processing unit 401 and used to store the image or data read by the image reading unit 60. In the figure, the storage unit 405 is a memory.

[0078] The micro-processing unit 401 can also internally carry an AI retinal multi-disease auxiliary diagnosis system (a conventional technology, which will not be described here). By this means, after the image reading unit 60 reads the image signal of the retina and transmits the image signal of the retina to the micro-processing unit 401, the AI retinal multi-disease auxiliary diagnosis system is used for interpretation, and the image or data of the interpreted retina is stored in the storage unit 405. In the figure, the micro-processing unit 401 is an artificial intelligence micro-processing unit (AI MCU).

[0079] The power supply unit 406 is electrically connected with the control circuit 40 to provide the power required by each unit and device. The power supply unit 406 is a rechargeable battery.

[0080] Please refer to Figure 3 , the AI retinal multi-disease auxiliary diagnosis system is used for interpretation, and the image or data of the interpreted retina is stored in the storage unit 405. Figure 1 , the AI retinal multi-disease auxiliary diagnosis system is used for interpretation, and the image or data of the interpreted retina is stored in the storage unit 405. Figure 1 , 2 When the eye 300 is attached to the eyecup 101 of the fundus camera system 100, the sensing unit 402 senses and outputs a signal to the control circuit 40, which starts the light-emitting unit 403 to illuminate the eye 300 of the eyecup 101, and drives the motor 303 of the zoom drive device 30 to rotate, so that the transmission rod 302 drives the lens holder 201 of the zoom lens group 20 to move axially forward or backward, so that the zoom lens group 20 automatically focuses on the eye 300. After the retina imaging signal of the focused eye 300 is focused by the fixed lens 50, it is projected into the image reading unit 60, and then the image reading unit 60 reads the photographed retina image signal and transmits it to the micro-processing unit 401 of the control circuit 40, which is interpreted by the AI retinal multi-disease auxiliary diagnosis system, and the image or data of the interpreted retina is stored in the storage unit 405.

[0081] Alternatively, the retina image or data interpreted by the AI retinal multi-disease auxiliary diagnosis system is transmitted to the external electronic device 200 through the communication unit 404 for reception, and then the retina-related disease is diagnosed by the relevant personnel (doctors) or relevant units (hospitals).

[0082] Please refer to Figure 4 , the AI retinal multi-disease auxiliary diagnosis system is used for interpretation, and the image or data of the interpreted retina is stored in the storage unit 405. Figures 1-3The first embodiment is largely the same, except that a rotatable zoom lens group 20a is pivotally connected to the front end of the housing 10 of the fundus camera system 100. The zoom lens group 20a has a lens barrel 201a, an eye mask 202a at the front end of the lens barrel 201a, a front lens 203a is provided on the eye mask 202a, and one or more lens elements 204a are installed inside the lens barrel 201a.

[0083] Furthermore, the outer surface of the lens barrel 201a has a threaded surface 205a, which is screwed to the threaded portion 104 provided at the front end of the housing 10. Also, the front end of the lens barrel 201a has a rotating portion 206a exposed outside the housing 10. When the examiner's eye 300 is against the eye shield 202a, rotating the rotating portion 206a by hand causes the lens barrel 201a to rotate, thereby manually adjusting the focus of the lens element 204a.

[0084] Furthermore, in addition to the aforementioned manual focusing, the lens barrel 201a can also be used as in the first embodiment of this utility model (e.g., Figure 1 As shown, after the transmission rod 302 engages with the threaded surface 205a on the outer surface of the lens barrel 201a (at this time, the front end of the housing 10 does not need to be provided with a threaded part 104), one end of the transmission rod 302 is fixedly connected to the motor 303. When the motor 303 is driven by the control circuit 40, it drives the transmission rod 302 to rotate, and the transmission rod 302 will also drive the lens barrel 201a to rotate, which can also perform automatic focusing mode.

[0085] Please see Figure 5 This is a schematic diagram of the fundus imaging system according to the third embodiment of the present invention. As shown in the figure, this embodiment is largely the same as the first and second embodiments, except that the zoom lens group 20b of the fundus imaging system 100 includes a lens mount 201b, a coil group 202b, a ring magnet 203b, at least one lens 204b, and two elastic elements 205b. The lens mount 201b is installed inside the housing 10. The ring magnet 203b is installed at the front end of the lens mount 201b. The coil group 202b is installed on the outer surface of the lens mount 201b and adjacent to the ring magnet 203b. The lens 204b is disposed inside the lens mount 201b and the ring magnet 203b. An elastic element 205b is installed at the front end of the ring magnet 203b and at the rear side of the lens mount 201b.

[0086] The control circuit 40 drives the coil group 202b and the annular magnet 203b to generate a Lorentz force law, so that the lens seat 201b moves to automatically focus and adjust, and after the lens seat 201b moves axially forward or backward, the lens seat 201b is restored to the original position by the two elastic elements 205b.

[0087] Referring to Figure 6 , the AI retinal multi-disease auxiliary diagnosis system is built in the micro processing unit (not shown in the figure) of the circuit board (not shown in the figure) in the electronic device 200. After the fundus camera system 100 is connected with the electronic device (such as a fundus detector, a smart mobile phone, a smart watch or a notebook computer) 200 through the transmission line 400, the retinal image of the eye photographed by the fundus camera system 100 can be transmitted to the electronic device 200, and the retinal image of the eye of the detected person is interpreted by the AI retinal multi-disease auxiliary diagnosis system built in the micro processing unit of the electronic device 200.

[0088] Referring to Figure 7 , the fundus camera system 100 of the utility model can be made into a binocular fundus camera system 100a. The binocular fundus camera system 100a can simultaneously detect the left eye and the right eye when in use.

[0089] In summary, the focusing system of the fundus camera system is redesigned in the utility model, so that the fundus camera system can automatically focus and more accurately photograph the image number of the fundus. The above-mentioned embodiments are only preferred embodiments for fully illustrating the utility model, and the protection scope of the utility model is not limited to this. Equivalent substitutions or transformations made by technicians in the technical field on the basis of the utility model are within the protection scope of the utility model. The protection scope of the utility model is subject to the claims.

Claims

1. A fundus camera system with autofocus function, characterized in that, Include: A housing having an eyepiece at its front end, the eyepiece having a front lens; A control circuit is installed inside the housing; An image reading unit is installed inside the housing; A fixed lens is installed inside the housing and located in front of the image reading unit to project the focused image signal onto the image reading unit; A zoom lens assembly is installed inside the housing and located in front of the fixed lens and the front lens; A zoom drive device is installed inside the housing to drive the zoom lens group to perform focus adjustment; A sensing unit is installed inside the housing and electrically connected to the control circuit to sense the eyes that are against the goggles; A light-emitting unit is installed inside the housing and electrically connected to the control circuit to provide the light source required for focusing and illumination.

2. The fundus camera system with autofocus function as described in claim 1, characterized in that, The control circuit also includes: One microprocessor unit; A communication unit is installed inside the housing and electrically connected to the microprocessor unit to connect to external electronic devices; A storage unit is electrically connected to the microprocessor unit and is used to store image data of the retina of the eye captured by the fundus camera system; A power supply unit to provide the power required by each unit and device.

3. The fundus camera system with autofocus function as described in claim 2, characterized in that, The communication unit is a wireless module or a wired module.

4. The fundus camera system with autofocus function as described in claim 2, characterized in that, The zoom lens assembly includes a lens mount, with a symmetrical upper shaft portion on both sides of the lens mount. The two upper shaft portions are pivotally connected to two slide rods provided inside the housing. Additionally, a lower shaft portion is provided at the bottom of the lens mount, and a threaded surface is provided on the inner wall of the lower shaft portion.

5. The fundus camera system with autofocus function as described in claim 4, characterized in that, One or more lenses are installed inside the lens mount.

6. The fundus camera system with autofocus function as described in claim 4, characterized in that, The zoom drive device is electrically connected to the control circuit and includes a support base, a transmission rod, and a motor. The support base is installed inside the housing and located below the lens mount. The transmission rod passes through the lower shaft portion of the lens mount and is pivotally connected to it. The transmission rod is then pivotally connected to the support base, and one end of the transmission rod is fixedly connected to the motor.

7. The fundus camera system with autofocus function as described in claim 2, characterized in that, A rotatable zoom lens assembly is pivotally connected to the front end of the housing. The zoom lens assembly has a lens barrel, and the eyecup is located at the front end of the lens barrel. The eyecup is equipped with the front lens, and one or more lenses are installed inside the lens barrel. In addition, a threaded surface is provided on the outer surface of the lens barrel, and the threaded surface is screwed to the threaded portion provided at the front end of the housing. Furthermore, a rotating portion is provided at the front end of the lens barrel that is exposed outside the housing.

8. The fundus camera system with autofocus function as described in claim 7, characterized in that, A transmission rod engages with the threaded surface of the lens barrel. One end of the transmission rod is fixedly connected to a motor. The motor is driven by the control circuit, which rotates the transmission rod and the lens barrel to perform autofocus mode.

9. The fundus camera system with autofocus function as described in claim 2, characterized in that, The zoom lens assembly includes a lens mount, a coil assembly, a ring magnet, at least one lens element, and two elastic elements. The lens mount is installed inside the housing, the ring magnet is installed at the front end of the lens mount, the coil assembly is installed on the outer surface of the lens mount and adjacent to the ring magnet, the lens element is disposed inside the lens mount and the ring magnet, and an elastic element is installed at the front end of the ring magnet and at the rear side of the lens mount.

10. A fundus camera system with autofocus function, characterized in that, Includes: a retinal camera system and an electronic device; The fundus camera system includes: A housing having an eyepiece at its front end, the eyepiece having a front lens; A control circuit is installed inside the housing; An image reading unit is installed inside the housing; A fixed lens is installed inside the housing and located in front of the image reading unit to project the focused image signal onto the image reading unit; A zoom lens assembly is installed inside the housing and located in front of the fixed lens and the front lens; A zoom drive device is installed inside the housing to drive the zoom lens group to perform focus adjustment; A sensing unit is installed inside the housing and electrically connected to the control circuit to sense the eyes that are against the goggles; and A light-emitting unit is installed inside the housing and electrically connected to the control circuit to provide the light source required for focusing and illumination; The electronic device is electrically connected to the control circuit.

11. The fundus camera system with autofocus function as described in claim 10, characterized in that, The electronic device is a fundus detector, a smartphone, a laptop, or a smartwatch.

12. The fundus camera system with autofocus function as described in claim 11, characterized in that, The control circuit also includes: One microprocessor unit; A communication unit is installed inside the housing and is electrically connected to the microprocessor unit and communicatively connected to the fundus detector; A storage unit is electrically connected to the microprocessor unit to store image data of the retina of the eye captured by the fundus camera system; A power supply unit to provide the power required by each unit and device.

13. The fundus camera system with autofocus function as described in claim 12, characterized in that, The zoom lens assembly includes a lens mount, with a symmetrical upper shaft portion on both sides of the lens mount. The two upper shaft portions are pivotally connected to two slide rods provided inside the housing. Additionally, a lower shaft portion is provided at the bottom of the lens mount, and a threaded surface is provided on the inner wall of the lower shaft portion.

14. The fundus camera system with autofocus function as described in claim 13, characterized in that, The zoom drive device is electrically connected to the control circuit and includes a support base, a transmission rod, and a motor. The support base is installed inside the housing and located below the lens mount. The transmission rod passes through the lower shaft portion of the lens mount and is pivotally connected to it. The transmission rod is then pivotally connected to the support base, and one end of the transmission rod is fixedly connected to the motor.

15. The fundus camera system with autofocus function as described in claim 12, characterized in that, A rotatable zoom lens assembly is pivotally connected to the front end of the housing. The zoom lens assembly has a lens barrel, and the eyecup is located at the front end of the lens barrel. The eyecup is equipped with the front lens, and one or more lenses are installed inside the lens barrel. In addition, a threaded surface is provided on the outer surface of the lens barrel, and the threaded surface is screwed to the threaded portion provided at the front end of the housing. Furthermore, a rotating portion is provided at the front end of the lens barrel that is exposed outside the housing.

16. The fundus camera system with autofocus function as described in claim 15, characterized in that, A transmission rod engages with the threaded surface of the lens barrel. One end of the transmission rod is fixedly connected to a motor. The motor is driven by the control circuit, which rotates the transmission rod and the lens barrel to perform autofocus mode.

17. The fundus camera system with autofocus function as described in claim 12, characterized in that, The zoom lens assembly includes a lens mount, a coil assembly, a ring magnet, at least one lens element, and two elastic elements. The lens mount is installed inside the housing, the ring magnet is installed at the front end of the lens mount, the coil assembly is installed on the outer surface of the lens mount and adjacent to the ring magnet, the lens element is disposed inside the lens mount and the ring magnet, and an elastic element is installed at the front end of the ring magnet and at the rear side of the lens mount.

Images