An apparatus for eye detection

Abstract

The present disclosure relates to an apparatus for eye detection. The apparatus comprises: a fundus camera comprising at least a front lens barrel assembly and a rear lens barrel assembly, and configured to perform a photographing operation on a fundus of an eye, wherein the front lens barrel assembly comprises at least an objective lens; an optometry instrument sharing the objective lens with the fundus camera, and configured to perform an optometry operation on an eye; and a mirror assembly arranged between the front lens barrel assembly and the rear lens barrel assembly, and configured to switch an internal light path of the apparatus so that the apparatus is correspondingly in a fundus camera mode for performing the photographing operation or in an optometry instrument mode for performing the optometry operation. With the solution of the present disclosure, the fundus camera and the optometry instrument can be implemented in one device, and the detection efficiency is improved.

Description

Technical Field

[0001] This disclosure generally relates to the field of eye detection technology. More specifically, this disclosure relates to an apparatus for eye detection. Background Technology

[0002] Eye examination involves using medical methods to assess a subject's eyes, including visual acuity, fundus examination, conjunctival examination, and intraocular pressure, to prevent and control eye diseases caused by excessive or improper use of the eyes and to protect eye health. Eye examinations are typically conducted using specialized equipment. Currently, fundus cameras and refractometers are the most commonly used and important eye examination devices in ophthalmic testing and diagnosis. Fundus cameras can analyze and detect retinal-related diseases, while refractometers accurately determine the degree of refractive error, providing a basis for prescribing corrective lenses. However, due to differences in optical principles and applications, existing refractometers and fundus cameras are currently separate devices. Therefore, eye examinations require separate testing on two independent devices (refractometer and fundus camera), resulting in low efficiency. Summary of the Invention

[0003] To at least partially address the technical problems mentioned in the background section, this disclosure provides an apparatus for eye examination. Utilizing this disclosure, a fundus camera and an optometer can be integrated, improving examination efficiency. Therefore, this disclosure provides solutions in several aspects, including...

[0004] In one aspect, this disclosure provides an apparatus for eye examination, comprising: a fundus camera including at least a front lens assembly and a rear lens assembly, and configured to perform an image capture operation on the fundus of the eye, wherein the front lens assembly includes at least an objective eyepiece; an optometer sharing the objective eyepiece with the fundus camera, and configured to perform an optometry operation on the eye; and a reflector assembly disposed between the front lens assembly and the rear lens assembly, and configured to switch the internal optical path of the apparatus so that the apparatus is respectively in a fundus camera mode for performing the image capture operation or an optometer mode for performing the optometry operation.

[0005] In one embodiment, the reflector assembly includes a first reflector, a moving guide rail, and a control motor. The first reflector is connected to the control motor and is arranged on the moving guide rail for reflecting light. The control motor controls the first reflector to move vertically up and down on the moving guide rail so that the internal light path of the device is switched when the first reflector is moved out of or into the preset position.

[0006] In another embodiment, the reflector assembly is further configured to: switch the internal optical path of the device to the fundus camera when it is moved out of the preset position, so that the device is in fundus camera mode for performing the photographing operation; and switch the internal optical path of the device to the refractometer when it is moved into the preset position, so that the device is in refractometer mode for performing the refraction operation.

[0007] In yet another embodiment, the reflector assembly further includes a first, a second, and a third support, wherein the first support is connected to the movable guide rail and is used to support the first reflector, the second support is used to support the movable guide rail, and the third support is used to support the control motor.

[0008] In yet another embodiment, the preset position is on the same axis as the front lens assembly and the rear lens assembly.

[0009] In another embodiment, the front lens assembly and the rear lens assembly are fixed via a U-shaped mounting base, and an inverted U-shaped light shield adapted to the mounting base is provided thereon, the light shield being used to block interfering light paths.

[0010] In another embodiment, the mounting base and the light shield form a hollow box, and when the first reflector is moved into the preset position, the first reflector is embedded in the hollow box.

[0011] In another embodiment, the light shield is provided with a light-transmitting hole, and the light-transmitting hole is used to transmit light reflected into the optometer when the first reflector is moved into the preset position.

[0012] In yet another embodiment, the optometer includes at least a second reflector opposite to the light-transmitting aperture and used to reflect the light path passing through the light-transmitting aperture inside the optometer.

[0013] In another embodiment, a light-shielding plate is provided above the first reflector, and the light-shielding plate is used to block the interfering light path reflected by the first reflector.

[0014] The present invention integrates the fundus camera and the refractometer into one unit by using a shared eyepiece and a reflector assembly to switch the internal optical path of the device, thereby improving detection efficiency. Furthermore, the embodiments of the present invention control the movement of the reflector by a motor, ensuring accurate repositioning after movement and guaranteeing the stability of the device in switching between the two modes. In addition, the embodiments of the present invention use a light shield and a light-blocking plate to block interfering light paths and eliminate stray light, ensuring the accuracy of the detection results. Attached Figure Description

[0015] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0016] Figure 1 This is an exemplary structural block diagram illustrating an apparatus for eye detection according to an embodiment of the present disclosure;

[0017] Figure 2 This is an exemplary schematic diagram showing the overall structure of an eye detection device according to an embodiment of the present disclosure;

[0018] Figure 3 This is an exemplary schematic diagram illustrating a mirror assembly according to an embodiment of the present disclosure;

[0019] Figure 4 This is an exemplary schematic diagram illustrating the mounting base and the light shield according to an embodiment of the present disclosure;

[0020] Figure 5 This is an exemplary schematic diagram showing a first reflector according to an embodiment of the present disclosure being moved into a preset position;

[0021] Figure 6 This is an exemplary schematic diagram illustrating the removal of a first reflector from a preset position according to an embodiment of the present disclosure; and

[0022] Figure 7 This is an exemplary schematic diagram showing the internal optical path of a device in optometer mode according to an embodiment of the present disclosure. Detailed Implementation

[0023] The technical solutions in the embodiments of this disclosure will now be clearly and completely described with reference to the accompanying drawings. It should be understood that the embodiments described in this specification are only some embodiments provided by this disclosure for the purpose of facilitating a clear understanding of the solutions and complying with legal requirements, and are not all embodiments that can be implemented by this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments disclosed in this specification without creative effort are within the scope of protection of this disclosure.

[0024] Figure 1 This is an exemplary structural block diagram illustrating an apparatus 100 for eye detection according to an embodiment of the present disclosure. Figure 1 As shown, the device 100 may include a fundus camera 101, an optometer 102, and a mirror assembly 103. The fundus camera 101, the optometer 102, and the mirror assembly 103 will be described in detail below.

[0025] In one embodiment, the aforementioned fundus camera 101 can be used to perform a photographic operation on the fundus of the eye to image the fundus, such as obtaining an image of the fundus retina. In one implementation, the fundus camera may include at least a front lens assembly and a rear lens assembly, and the aforementioned front lens assembly may include at least an eyepiece. In some embodiments, the aforementioned rear lens assembly may include a fundus illumination source (including infrared LEDs and white LEDs), a camera lens group, a beam splitter, and a receiver detector (CMOS). In fundus camera mode, fundus imaging can be achieved based on the eyepiece in the front lens assembly and the components in the rear lens assembly. This will be discussed later in conjunction with... Figure 7 Describe in detail the imaging principle of the fundus camera mode.

[0026] In one embodiment, the aforementioned optometry device 102 shares an eyepiece with the aforementioned fundus camera 101 and is used to perform an optometry operation on the eye to obtain the refractive power of the eye. In one implementation scenario, the optometry device may include different types of reflectors, prisms, and objective lenses, as well as a refractive sensor, a refractive white light LED, and an infrared projection illumination lamp. In optometry mode, based on the aforementioned components, a sensor optical path, an infrared light source optical path, and a white light source optical path can be formed to measure the refractive power of the eye. This will be discussed later in conjunction with... Figure 7 Describe in detail the measurement of ocular refractive power in optometry mode.

[0027] In one embodiment, the aforementioned reflector assembly 103 is arranged between the front and rear lens barrel assemblies of the fundus camera 101 and is used to switch the internal optical path of the device, so that the device is in fundus camera mode for performing photography or optometer mode for performing refraction. In one implementation scenario, the reflector assembly may include a first reflector, a moving guide rail, and a control motor. The first reflector may be connected to the control motor and is arranged on the moving guide rail for reflecting the optical path. The control motor may be used to control the first reflector to move vertically up and down on the moving guide rail, so that the internal optical path of the device is switched when the first reflector is moved out of or into a preset position. In some embodiments, the aforementioned reflector assembly may further include first, second, and third supports. The first, second, and third supports are used to support the first reflector, the moving guide rail, and the control motor, respectively. The first support is also connected to the moving guide rail so that the first reflector can move up and down along the moving guide rail. Furthermore, a light-shielding plate can be installed on the first reflector in this reflector assembly to block interfering light paths reflected by the first reflector. This will be discussed later. Figure 3 The reflector assembly of the present disclosure is described in detail.

[0028] In one embodiment, the control motor may be, for example, a lead screw motor, which drives the first reflector to move up and down on the moving guide rail, thereby moving the first reflector out of a preset position (e.g., Figure 6 (as shown) or move to a preset position (e.g.) Figure 5 (As shown). The internal optical path of the device is switched based on whether the first reflector is moved out of or into a preset position, causing the device to be in either a fundus camera mode for taking pictures or an optometer mode for refraction. Specifically, when the first reflector is moved out of the preset position, the internal optical path of the device is switched to the fundus camera mode to put the device in fundus camera mode for taking pictures. When the first reflector is moved into the preset position, the internal optical path of the device is switched to the optometer mode to put the device in optometer mode for refraction, thus realizing the integration of a fundus camera and an optometer.

[0029] As described above, this embodiment of the invention uses a shared eyepiece between the fundus camera and the refractometer, and adds a reflector assembly between the front and rear lens barrel assemblies of the fundus camera to switch the internal optical path of the device. This allows the device to operate in both fundus camera mode and refractometer mode. Using this embodiment, fundus images and refractive errors can be obtained in a single eye examination of the subject, greatly improving detection efficiency. Furthermore, this embodiment uses, for example, a lead screw motor to control the movement of the first reflector, ensuring the accuracy of its reset when moving out and into preset positions, thereby guaranteeing the stability of the device's mode switching.

[0030] Figure 2 This is an exemplary schematic diagram illustrating the overall structure of an eye detection device according to an embodiment of the present disclosure. It should be understood that... Figure 2 The above Figure 1 One specific embodiment of the device 100, therefore the above regarding Figure 1 The description also applies to Figure 2 .

[0031] like Figure 2 As shown, the device of this embodiment may include a fundus camera 101 and an optometer 102, wherein the fundus camera 101 and the optometer 102 share the object eyepiece 202 in the front lens barrel assembly 201 of the fundus camera 101 to examine the subject's eye. Further, a reflector assembly 103 is disposed between the front lens barrel assembly 201 and the rear lens barrel assembly 203 of the fundus camera 101. This reflector assembly 103 switches the internal optical path of the device of this embodiment, so that the device is in either a fundus camera mode for taking pictures or an optometer mode for conducting refraction. As described above, the reflector assembly 103 may include a first reflector, a moving guide rail, and a control motor. The control motor can control the first reflector in the reflector assembly 103 to move vertically up and down along the moving guide rail, so that the internal optical path of the device is switched when the first reflector is moved out of or into a preset position.

[0032] In one exemplary scenario, when the first reflector in the reflector assembly 103 is moved out of a preset position, the internal optical path of the device of this embodiment switches to the fundus camera 101 along the direction of the horizontal arrow shown in the figure. Then, fundus imaging is achieved via, for example, a fundus illumination source (including an infrared LED and a white LED), a camera lens group, a beam splitter, and a receiving detector (CMOS) within the rear lens barrel assembly 203 of the fundus camera 101. In another exemplary scenario, when the first reflector in the reflector assembly 103 is moved into a preset position, the internal optical path of the device of this embodiment switches to the optometer 102 along the direction of the vertical arrow shown in the figure. Further, the refractive power of the eye is measured via different types of reflectors, prisms, and objective lenses, as well as a refractive sensor, a refractive white LED, and an infrared projection illumination lamp within the optometer 102. In some embodiments, the aforementioned optometer 102 is provided with a sensor mounting base 204, a focusing lens assembly mounting base 205, a lens barrel mounting base 206, a first reflector mounting base 207, a prism mounting base 208, a focusing motor 209, and a second reflector mounting base 210, to respectively fix, for example, a refractive sensor, different types of reflectors, and a focusing assembly.

[0033] Figure 3 This is an exemplary schematic diagram illustrating a mirror assembly 103 according to an embodiment of the present disclosure. Figure 3 As shown, the reflector assembly 103 may include a first reflector 301, a moving guide rail 302, and a control motor 303, and the first reflector 301, the moving guide rail 302, and the control motor 303 are each supported by a corresponding support. For example, the first reflector 301 is supported by a first support 304. Similarly, the moving guide rail 302 and the control motor 303 are supported by a second support 305 and a third support 306, respectively. Further, the first reflector 301 is connected to the moving guide rail 302 and the control motor 303 via the first support 304 and is used to reflect light. Further, a light-shielding plate 307 is also provided above the first reflector 301 to block stray light from the first reflector and the outside.

[0034] In the implementation scenario, the operation of the control motor 303 drives the first reflector 301 to move up and down along the moving guide rail 302, thereby moving the first reflector 301 out of or into a preset position. As described above, the control motor 303 can be, for example, a lead screw motor, which drives the first reflector 301 to move out of or into the preset position. When the first reflector 301 is moved out of the preset position, the internal optical path of the device of this embodiment is switched to the fundus camera, so that the device is in the fundus camera mode for performing image taking. When the first reflector 301 is moved into the preset position, the internal optical path of the device of this embodiment is switched to the optometer by reflecting the light through the first reflector 301, so that the device is in the optometer mode for performing optometry.

[0035] In one embodiment, the preset position in this disclosure embodiment (e.g.) Figure 5 The position indicated by the dashed line is aligned with the front and rear lens barrel assemblies of the fundus camera to ensure that when the first reflector is moved to the preset position by the control motor, it can reflect the light path into the optometry instrument. In some embodiments, the aforementioned control motor can be implemented using, for example, a programmable logic controller (PLC), to achieve high reset accuracy when the first reflector is moved to the preset position, for example, its reset accuracy can reach 0.02 mm. In addition, the control motor can also realize the movement of the first reflector in or out within a short time (e.g., 0.5 s).

[0036] In one embodiment, to prevent optical path interference when the device of this disclosure is in fundus camera mode and optometer mode respectively, a U-shaped mounting bracket is first provided on the front and rear lens barrel assemblies of the fundus camera to fix it. Then, an inverted U-shaped light shield adapted to the aforementioned mounting bracket is provided to block the interfering optical path, for example... Figure 4 As shown.

[0037] Figure 4 This is an exemplary schematic diagram illustrating the mounting base and the light shield according to an embodiment of the present disclosure. Figure 4 The U-shaped component shown is the mounting base 401. The front portion 402 and the rear portion 403 of the mounting base 401 are used to fix the front and rear lens barrel assemblies of the fundus camera, respectively. Further, the inverted U-shaped component shown is the light shield 404. This light shield 404 can be used to block interfering light paths to avoid interference between the fundus camera and the refractometer's stray light. In one implementation scenario, the aforementioned mounting base and the compatible light shield form a hollow box, and when the first reflector of this embodiment is moved into a preset position, the first reflector is embedded within this hollow box (e.g., ...). Figure 5 (As shown). For example, in an exemplary scenario, the first reflector can be via... Figure 4 The mounting base 401 shown has an insertion port 405 at its bottom that is embedded in the hollow box.

[0038] In one embodiment, the aforementioned light shield is further provided with a light-transmitting hole (e.g., Figure 5 The light-transmitting hole 501 shown can be used to transmit light reflected into the optometer when the first reflector is moved to a preset position. That is, when the first reflector is moved to the preset position, the internal light path of the device according to this embodiment is reflected into the optometer through the light-transmitting hole on the light shield. As mentioned above, the optometer may include different types of reflectors, for example, it may include a second reflector (i.e.,...). Figure 7 (See the beam-splitting reflector 713 shown). In some embodiments, the second reflector is opposite to the light-transmitting hole on the light shield and is used to reflect the light path passing through the light-transmitting hole inside the optometry device. In other words, when the first reflector is moved to a preset position, the internal light path of the device of this embodiment is reflected through the light-transmitting hole on the light shield to the aforementioned second reflector, and then reflected into the optometry device via the second reflector, so that the device of this embodiment is in optometry mode.

[0039] Figure 5 This is an exemplary schematic diagram illustrating the movement of a first reflector into a preset position according to an embodiment of the present disclosure. Figure 5 As shown in the illustration, the mirror assembly 103 of this embodiment is disposed between the front lens barrel assembly 201 and the rear lens barrel assembly 203 of the fundus camera 101, and the mirror assembly 103 includes a first mirror (e.g. Figure 3 , Figure 7 The figure shows a first reflecting mirror 301, a moving guide rail 302, and a control motor 303. The first reflecting mirror moves up and down along the moving guide rail 302 under the control of the control motor 303, and a light-shielding plate 307 is also provided above the first reflecting mirror. Further, the figure shows that the aforementioned front lens assembly 201 and rear lens assembly 203 are fixed by a fixing base 401, and a matching light-shielding cover 404 is provided on the fixing base 401 to prevent mutual interference between the optical paths of the fundus camera and the optometry instrument. Furthermore, the aforementioned fixing base 401 and light-shielding cover 404 form a hollow box, and when the first reflecting mirror is moved to a preset position, the first reflecting mirror is embedded in the hollow box.

[0040] In this scenario, when the internal light path of the device in this embodiment passes through the first reflector, it is reflected by the first reflector. Then, the reflected light path reflected by the first reflector enters the optometer through the light-transmitting hole 501 on the light shield 404, putting the device into optometer mode to measure the refractive power of the eye.

[0041] Figure 6 This is an exemplary schematic diagram illustrating that a first reflector according to an embodiment of the present disclosure has been moved out of a preset position. Figure 6 As shown in the illustration, the mirror assembly 103 of this embodiment is disposed between the front lens barrel assembly 201 and the rear lens barrel assembly 203 of the fundus camera 101, and the mirror assembly 103 includes a first mirror (e.g. Figure 3 , Figure 7 The diagram shows a first reflector 301, a moving guide rail 302, and a control motor 303. The first reflector moves up and down along the moving guide rail 302 under the control of the control motor 303. Furthermore, a light-shielding plate 307 is provided above the first reflector, which can be used to block interfering light reflected by the first reflector and stray light from outside the device.

[0042] The figure further illustrates that the aforementioned front lens assembly 201 and rear lens assembly 203 are fixed via a mounting base 401, and a light shield 404 adapted to the mounting base 401 is provided to prevent mutual interference between the optical paths of the fundus camera and the optometry instrument. Furthermore, the mounting base 401 and the light shield 404 form a hollow box. When the first reflector is moved out of a preset position, the first reflector moves out of the hollow box, and the light shield on the first reflector is tightly attached to the bottom of the mounting base 401, making the hollow box sealed. In this scenario, the light shield of this embodiment can also prevent external light from interfering with the optical path inside the fundus camera. Based on this, the internal optical path of the device in this embodiment reaches the rear lens assembly 203 of the fundus camera, so that the device is in fundus camera mode to achieve fundus imaging of the eye.

[0043] Figure 7 This is an exemplary schematic diagram showing the internal optical path of a device in optometer mode according to an embodiment of the present disclosure.

[0044] like Figure 7 As shown, when the first reflector 301 is moved into a preset position (e.g., as described above) Figure 5As shown, the apparatus of this embodiment is in optometry mode. Specifically, in optometry mode, the infrared projection lamp 707 in the optometry 102 first illuminates the annular reticle 710 in front of it through the illumination condenser lens 708 and the conical lens 709 to form a circular halo. Further, the aforementioned circular halo is transmitted through the projection lens 711, reflected by the perforated prism 712, transmitted through the beam splitter 713, reflected by the first reflector 301, and transmitted through the eyepiece lens 702 before illuminating the eye being tested 703. Then, it returns along the same path after being reflected by the retina of the eye being tested 703. That is, after passing through the eyepiece lens 702, it is reflected by the first reflector 301, and the reflected light path is reflected through the light-transmitting hole on the light shield to the beam splitter 713. Next, after passing through the beam splitter 713, it passes through the small hole of the perforated prism 712 and is reflected by the second mirror 714. Then, it passes through the measuring objective lens 715, the compensation plate 716, and the imaging objective lens 717, and is finally received by the refractive measurement sensor 718.

[0045] Simultaneously, the white LED lamp 719 in the optometry instrument 102 illuminates the image on the fogged view panel 720, which is then reflected by the beam splitter 713 and the first reflector 301 through the eyepiece objective 702 and onto the eye being tested 703. Finally, the focusing module in the optometry instrument 102 is moved back and forth along the optical axis by the focusing assembly 722, so that the circular halo on the refractive measurement sensor 718 is at its clearest, and the fogged image seen by the eye being tested 703 is also at its clearest. Then, the refractive power of the eye being tested 703 can be obtained by analyzing and calculating the circular image. It is understood that refractive measurement should be performed in a relaxed state of the optic nerve of the eye being tested to ensure the accuracy of the refractive power measurement.

[0046] although Figure 7 Not shown, but those skilled in the art will understand that when the first reflector 301 is moved out of the preset position (e.g., as described above) Figure 6 As shown), the device in this embodiment of the present disclosure is in fundus camera mode. Specifically, in fundus camera mode, the fundus illumination source (including infrared LED and white LED) 701 in the fundus camera 101 first passes through the eyepiece 702 (that is, the aforementioned...) Figure 2 The objective lens 202 shown in the diagram images the light onto the pupil and illuminates, for example, the retina of the eye 703 being tested. Then, the reflected light from the retina passes through the objective lens 702, the camera lens group 704, and the beam splitter 705, and images the retina onto the receiving detector COMS 706, thereby achieving fundus imaging.

[0047] Based on this, a fundus camera and an optometer are combined into one device. With the device disclosed herein, a single examination of the subject's eyes can obtain fundus images and the refractive power of the eyes, greatly improving the detection efficiency.

[0048] It should be noted that although the operations of the methods of this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all of the operations shown must be performed to achieve the desired result. On the contrary, the steps depicted in the flowchart may be performed in a different order. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0049] It should be understood that when the terms "first," "second," "third," and "fourth," etc., are used in the claims, specification, and drawings of this disclosure, they are used only to distinguish different objects and not to describe a specific order. The terms "comprising" and "including" as used in the specification and claims of this disclosure indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0050] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0051] While the embodiments of this disclosure are described above, the content is merely an example for the purpose of facilitating understanding of this disclosure and is not intended to limit the scope or application scenarios of this disclosure. Any person skilled in the art can make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed herein; however, the patent protection scope of this disclosure shall still be determined by the scope defined in the appended claims.

Claims

1. A device for eye detection, comprising: A fundus camera, comprising at least a front lens assembly and a rear lens assembly, and configured to perform an image capture operation on the fundus of the eye, wherein the front lens assembly comprises at least an objective eyepiece; An optometer that shares the same eyepiece as the fundus camera and is configured to perform refraction operations on the eye; and A mirror assembly, including a first mirror, is disposed between the front lens assembly and the rear lens assembly, and is configured to switch the internal optical path of the device so that the device is in either a fundus camera mode for performing the imaging operation or an optometer mode for performing the refraction operation. The mirror assembly is further used for: When it is moved out of the preset position, the internal optical path of the device is switched to the fundus camera so that the device is in the fundus camera mode for performing the photographing operation; as well as When it is moved into the preset position, the internal optical path of the device is switched to the optometer so that the device is in optometer mode for performing the optometry operation; The front lens barrel assembly and the rear lens barrel assembly are fixed by a U-shaped mounting base, and an inverted U-shaped light shield adapted to the mounting base is provided on the mounting base to block interfering light paths; The fixing base and the light shield form a hollow box, and when the first reflector is moved into the preset position, the first reflector is embedded in the hollow box. The light shield is provided with a light-transmitting hole, and the light-transmitting hole is used to allow light reflected into the optometer when the first reflector is moved into the preset position. The optometer includes at least a second reflector, which is opposite to the light-transmitting hole and is used to reflect the light path passing through the light-transmitting hole inside the optometer.

2. The apparatus according to claim 1, wherein the reflector assembly further includes a moving guide rail and a control motor, wherein the first reflector is connected to the control motor, and the first reflector is arranged on the moving guide rail for reflecting the light path, and the control motor is used to control the first reflector to move up and down in the vertical direction on the moving guide rail, so that when the first reflector is moved out of or into the preset position, the internal light path of the apparatus is switched.

3. The apparatus of claim 2, wherein the reflector assembly further comprises a first, a second, and a third support, wherein the first support is connected to the movable guide rail and is used to support the first reflector, the second support is used to support the movable guide rail, and the third support is used to support the control motor.

4. The device according to claim 1, wherein the preset position is on the same axis as the front lens assembly and the rear lens assembly.

5. The apparatus according to claim 1, wherein a light-shielding plate is provided above the first reflector, and the light-shielding plate is used to block the interfering light path reflected by the first reflector.

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