Binocular optometry device

Abstract

The utility model provides a binocular optometry device which comprises a base, a first eye optometry assembly and a second eye optometry assembly, the first eye optometry assembly is movably arranged on the base, and the second eye optometry assembly is movably arranged on the base. The first eye optometry assembly comprises a first subjective visual function test module for performing subjective optometry on a first eye and a refraction objective measurement module capable of performing objective refraction error measurement on the first eye; the second eye optometry assembly is movably arranged on the base, and the second eye optometry assembly comprises a second subjective visual function test module used for conducting subjective optometry on a second eye but does not comprise a refraction objective measurement module capable of conducting objective refraction error measurement on the second eye; wherein when the first eye and the second eye are fixed relative to the base, the first eye optometry assembly is arranged to be capable of moving to the position of the second eye, so that the objective refraction error of the second eye is measured through a refraction objective measurement module in the first eye optometry assembly. According to the binocular optometry device provided by the invention, the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a binocular optometry device. Background Art

[0002] In the related art, a binocular optometry device with subjective refraction and objective refractive error measurement functions usually has a symmetrical binocular optical path structure, which includes a subjective visual function test module and an objective refractive error measurement module. This will cause the number of all devices in the optical path of the binocular optometry device, especially the key devices with higher costs (such as beacon light sources, Hartmann cameras, etc.), to be doubled, which is not convenient for controlling the cost of the binocular optometry device. Utility Model Content

[0003] In order to at least partially solve the above problems, an embodiment of the present application provides a binocular optometry device for collecting data of a first eye and a second eye of a subject, the binocular optometry device comprising a base, a first eye optometry component and a second eye optometry component, the first eye optometry component being movably arranged on the base, the first eye optometry component comprising a first subjective visual function test module for performing subjective optometry on the first eye and a refractive objective measurement module capable of measuring an objective refractive error of the first eye; the second eye optometry component being movably arranged on the base, the second eye optometry component comprising a second subjective visual function test module for performing subjective optometry on the second eye, but excluding a refractive objective measurement module capable of measuring an objective refractive error of the second eye; wherein, when the first eye and the second eye of the subject are kept fixed relative to the base, the first eye optometry component is arranged to be movable to the position of the second eye, so as to measure the objective refractive error of the second eye through the refractive objective measurement module in the first eye optometry component.

[0004] In some embodiments, the binocular optometry device also includes a moving component and a distance adjustment component, the moving component is arranged on the base, the first eye optometry component and the second eye optometry component are arranged on the moving component, and the moving component can drive the first eye optometry component and the second eye optometry component to move as a whole at least along the direction of the line connecting the first eye and the second eye of the subject; the distance adjustment component is arranged on the moving component, the first eye optometry component is arranged on the distance adjustment component, and the distance adjustment component can drive the first eye optometry component to move along the direction of the line connecting the first eye and the second eye of the subject.

[0005] In some embodiments, the first subjective visual function test module includes a first sight mark display device and a first sight mark objective lens. The first sight mark image displayed by the first sight mark display device can be projected onto the eyeball of the subject through the first sight mark objective lens and other optical path structures in the first eye optometry component. When the objective refractive error of the eyeball of the subject is measured, the eyeball of the subject fixes on the first sight mark image; wherein, the first subjective visual function test module is at least partially movably arranged in the first eye optometry component, so that when the objective refractive error of different eyes of the subject is measured through the first eye optometry component, the optical axis of the refractive objective measurement module in the first eye optometry component can be coaxial with the optical axis of the eyeball fixating on the first sight mark image.

[0006] In some embodiments, the first eye test assembly further includes a first rotating mechanism, and the first sight mark display device and the first sight mark objective lens are both disposed on the first rotating mechanism, and the first rotating mechanism can drive the first sight mark display device and the first sight mark objective lens to rotate as a whole.

[0007] In some embodiments, the first subjective visual function test module also includes a first reflector, and the first sight mark image displayed by the first sight mark display device can pass through the first sight mark objective lens, the first reflector and other optical path structures in the first eye optometry component to be projected onto the eyeball of the subject; wherein the first reflector is arranged on a first rotating mechanism, and the first rotating mechanism can drive the first sight mark display device, the first sight mark objective lens and the first reflector to rotate as a whole.

[0008] In some embodiments, the first subjective visual function test module also includes a first reflector, and the first sight mark image displayed by the first sight mark display device can be projected onto the eyeball of the subject through the first sight mark objective lens, the first reflector and other optical path structures in the first eye optometry component; the first eye optometry component also includes a second rotating mechanism, the first reflector is arranged on the second rotating mechanism, and the second rotating mechanism can drive the first reflector to rotate.

[0009] In some embodiments, the first eye optometry assembly further includes a translation mechanism, the first sight mark display device is disposed on the translation mechanism, and the translation mechanism is configured to drive the first sight mark display device to translate in a direction perpendicular to the optical axis of the first sight mark objective lens.

[0010] In some embodiments, the refractive objective measurement module in the first-eye optometry component includes a light source, a collimating objective lens, a first relay telescope and a wavefront sensor. The light emitted by the light source is collimated by the collimating objective lens and can reach the fundus of the subject along the optical path of the first-eye optometry component. After being reflected by the fundus of the subject, the light passes through the first relay telescope along the optical path of the first-eye optometry component and reaches the wavefront sensor.

[0011] In some embodiments, the refractive objective measurement module in the first eye test component also includes a first beam splitter and a second beam splitter, and the first subjective visual function test module also includes a first reflector; after the light emitted by the light source is collimated by the collimating objective lens, it can be reflected by the first beam splitter and the second beam splitter in sequence to reach the fundus of the subject, and after being reflected by the fundus of the subject, it can pass through the second beam splitter and the first relay telescope in sequence to reach the wavefront sensor; the first sight mark image displayed by the first sight mark display device can pass through the first sight mark objective lens to reach the first reflector, and after being reflected by the first reflector, it can pass through the first beam splitter to reach the second beam splitter, and be reflected by the second beam splitter to the eyeball of the subject; the second subjective visual function test module includes a second sight mark display device and a second sight mark objective lens, and the second sight mark image displayed by the second sight mark display device can be projected onto the eyeball of the subject through the second sight mark objective lens.

[0012] In some embodiments, the first-eye optometry component also includes a first refractive correction component, and the light emitted by the light source reaches the fundus of the subject after passing through the first refractive correction component. After being reflected by the fundus of the subject, the light reaches the wavefront sensor after passing through the first refractive correction component, and the first sight mark image is projected onto the eyeball of the subject after passing through the first refractive correction component; the second-eye optometry component also includes a second refractive correction component, and the second sight mark image is projected onto the eyeball of the subject after passing through the second refractive correction component.

[0013] In the binocular optometry device provided by the embodiment of the present application, the first eye optometry component and the second eye optometry component adopt an asymmetric structure, and only the first eye optometry component retains the objective refractive measurement module, while the second eye optometry component does not retain the objective refractive measurement module, but retains the subjective visual function test module, so as to implement the subjective visual function test of the second eye, and cooperate with the subjective visual function test module in the first eye optometry component to complete the subjective visual function test of both eyes. When it is necessary to perform objective refractive measurement on the second eye, it is only necessary to move the first eye optometry component to the second eye for measurement, thereby simplifying the structure of the second eye optometry component while retaining the objective refractive measurement function of the binocular eyes, and reducing the cost of the binocular optometry device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 is a schematic diagram of the optical path structure of a binocular optometry device provided in an embodiment of the present application;

[0016] Figure 2is a schematic diagram of a partial structure of a binocular optometry device provided in an embodiment of the present application;

[0017] Figure 3 is a schematic diagram of a binocular optometry device provided in an embodiment of the present application for measuring pupil distance;

[0018] Figure 4 It is a principle diagram of the ruler glasses of the binocular optometry device provided in an embodiment of the present application for measuring pupil distance and pupil height.

[0019] The reference numerals are as follows:

[0020] 1. Eyeball; 2. First image acquisition device; 3. Second relay telescope; 4. First cylindrical mirror pair; 5. Second spectroscope; 6. First relay telescope; 7. Wavefront sensor; 8. First sight mark display device; 9. Light source; 10. Collimating objective lens; 11. First sight mark objective lens; 12. First reflector; 13. First spectroscope; 14. Second image acquisition device; 15. Third relay telescope; 16. Second cylindrical mirror pair; 17. Second sight mark objective lens; 18. Second sight mark display device; 19. First eye optometry component; 20. Second eye optometry component; 21. Base; 22. Jaw limiter; 23. Nose limiter; 24. Ruler glasses; 25. Ruler grid lines; 26. First rotating mechanism.

[0021] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0022] The technical scheme of the preferred embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection claimed in the present application.

[0023] The words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] In order to at least partially solve the problem that the cost of binocular optometry devices in the related art is not easy to control, an embodiment of the present application provides a binocular optometry device for collecting data of the first eye and the second eye of a subject. In the present application, the first eye of the subject may be the left eye or the right eye of the subject, and the second eye may be the left eye or the right eye different from the first eye. The data of the first eye and the second eye of the subject may include one or more of the refractive power data, pupil distance data, pupil height data, etc. of the first eye and / or the second eye. Exemplarily, in the present embodiment, the binocular optometry device may be a computer ophthalmometer.

[0025] Figure 1 is a schematic diagram of the optical path structure of a binocular optometry device provided in an embodiment of the present application, Figure 2 FIG. 1 is a schematic diagram of a partial structure of a binocular optometry device provided in an embodiment of the present application, in which some structures irrelevant to the improvement of the present application are omitted. Figure 1 and Figure 2 As shown, the binocular optometry device may include a base 21 , a first eye optometry component 19 and a second eye optometry component 20 .

[0026] The first eye optometry component 19 is movably arranged on the base 21. The first eye optometry component 19 includes a first subjective visual function test module for performing subjective optometry on the first eye and a refractive objective measurement module capable of measuring the objective refractive error of the first eye; the second eye optometry component 20 is movably arranged on the base 21, and the second eye optometry component 20 includes a second subjective visual function test module for performing subjective optometry on the second eye, but does not include a refractive objective measurement module capable of measuring the objective refractive error of the second eye. The first eye optometry component 19 and the second eye optometry component 20 can be movably arranged on the base 21 through a screw structure or a slide groove and slide rail structure. The first subjective visual function test module can be used to perform subjective optometry on the first eye, the second subjective visual function test module can be used to perform subjective optometry on the second eye, and the first subjective visual function test module and the second subjective visual function test module can be used together for subjective optometry of both eyes. Wherein, when the first eye and the second eye of the subject remain fixed relative to the base 21, the first eye optometry assembly 19 is configured to be movable to the position of the second eye, so as to measure the objective refractive error of the second eye through the objective refractive measurement module in the first eye optometry assembly 19. The first eye optometry assembly 19 can be moved to the position of the second eye along a preset path by translation, rotation, or a combination of both, so as to measure the objective refractive error of the second eye. When the first eye optometry assembly 19 moves toward the second eye, it can be driven by a motor, and the control signal of the motor is generated by the processor based on the position data of the second eye collected by the sensor (such as an image acquisition device); of course, in other embodiments, the first eye optometry assembly 19 can also be manually moved by the operator of the binocular optometry device to achieve movement toward the second eye. Before the first eye optometry assembly 19 moves to the second eye, the second eye optometry assembly 20 can perform corresponding avoidance movements to reserve space for the first eye optometry assembly 19. It should be noted that the first eye optometry component 19 can mainly measure the left eye of the subject, and the second eye optometry component 20 can measure the right eye of the subject; the first eye optometry component 19 can also mainly measure the right eye of the subject, and the second eye optometry component 20 can measure the left eye of the subject. That is to say, the first eye optometry component 19 and the second eye optometry component 20 are Figure 2 The positions in can be interchanged.

[0027] In the binocular optometry device provided by the embodiment of the present application, the first eye optometry component 19 and the second eye optometry component adopt an asymmetric structure, and only the first eye optometry component 19 retains the objective refractive measurement module, and the second eye optometry component 20 does not retain the objective refractive measurement module, but retains the subjective visual function test module, so as to implement the subjective visual function test of the second eye, and cooperate with the subjective visual function test module in the first eye optometry component 19 to complete the subjective visual function test of both eyes. When it is necessary to perform objective refractive measurement on the second eye, it is only necessary to move the first eye optometry component 19 to the second eye for measurement, so as to simplify the structure of the second eye optometry component 20 while retaining the objective refractive measurement function of the binocular eyes, thereby reducing the cost of the binocular optometry device.

[0028] In some embodiments, the binocular optometry device also includes a moving component and a spacing adjustment component. The moving component is arranged on the base 21, the first eye optometry component 19 and the second eye optometry component 20 are arranged on the moving component, and the moving component can drive the first eye optometry component 19 and the second eye optometry component 20 to move as a whole at least along the direction of the line connecting the first eye and the second eye of the subject; the spacing adjustment component is arranged on the moving component, the first eye optometry component 19 is arranged on the spacing adjustment component, and the spacing adjustment component can drive the first eye optometry component 19 to move along the direction of the line connecting the first eye and the second eye of the subject. In this embodiment, for the asymmetric structure of the first-eye optometry component 19 and the second-eye optometry component 20, the distance between the first-eye optometry component 19 and the second-eye optometry component 20 is adjusted by changing the position of the first-eye optometry component 19, while the position of the second-eye optometry component 20 relative to the moving component in the distance adjustment direction remains unchanged. This arrangement can require a shorter stroke for the moving component that drives the first-eye optometry component 19 and the second-eye optometry component 20 to move as a whole when measuring the objective refractive data of the second eye through the first-eye optometry component 19, and mainly rely on the distance adjustment component to achieve the movement of the first-eye optometry component 19 toward the second eye, which is beneficial to controlling the volume of the binocular optometry device; in addition, it can also simplify the control logic, for example, the moving component can be moved a fixed distance so that it drives the second-eye optometry component 20 to deviate from the position aligned with the second eye to avoid the first-eye optometry component 19.

[0029] In this embodiment, the moving assembly can drive the first eye optometry assembly 19 and the second eye optometry assembly 20 to move as a whole. The direction in which the moving assembly drives the first eye optometry assembly 19 and the second eye optometry assembly 20 to move as a whole includes at least the direction of the line connecting the first eye and the second eye of the subject (the left and right direction of the subject), and can also include other directions, such as the up and down direction, the front and back direction of the subject, etc. Preferably, the moving assembly can drive the first eye optometry assembly 19 and the second eye optometry assembly 20 to move as a whole in three mutually orthogonal directions, and the three mutually orthogonal directions can be the up and down, left and right, and front and back directions of the subject. The spacing adjustment assembly can drive the first eye optometry assembly 19 to move relative to the moving assembly, thereby driving the first eye optometry assembly 19 to move along the line connecting the first eye and the second eye of the subject, and the second eye optometry assembly 20 can remain fixed relative to the moving assembly. Of course, in other embodiments, the second eye optometry assembly 20 may not be fixed to the moving assembly, and the spacing between the two can be adjusted by adjusting the first eye optometry assembly 19 and the second eye optometry assembly 20 at the same time. The moving components and the spacing adjustment components can be moved in the specified direction through the drive of the motor through the slide rail, ball screw, linear screw and other structures.

[0030] In some embodiments, the binocular optometry device further includes a height adjustment component, which is arranged on the mobile component and is used to adjust the height difference between the first eye optometry component 19 and the second eye optometry component 20; the second eye optometry component 20 is connected to the mobile component through the height adjustment component, so that the second eye optometry component 20 can move relative to the mobile component in a direction perpendicular to the plane where the first eye optometry component 19 and the second eye optometry component 20 are located. In this embodiment, by setting the height adjustment component, the first eye optometry component 19 and the second eye optometry component 20 can be better adapted to the subjects with different pupil heights; further, by changing the position of the second eye optometry component 20 to adjust the height difference between the first eye optometry component 19 and the second eye optometry component 20, the connection structure between the first eye optometry component 19 and the mobile component can be simplified. The height adjustment component can be driven by a motor through a structure such as a slide groove, a ball screw, and a linear screw to achieve movement in a specified direction.

[0031] In some embodiments, the first subjective visual function test module includes a first sight mark display device 8 and a first sight mark objective lens 11. The first sight mark image displayed by the first sight mark display device 8 can be projected onto the eyeball 1 of the subject through the first sight mark objective lens 11 and other optical path structures in the first eye optometry component 19. When the objective refractive error of the eyeball 1 of the subject is measured, the eyeball 1 of the subject fixes on the first sight mark image; wherein, the first subjective visual function test module is at least partially movably arranged in the first eye optometry component 19, so that when the objective refractive error of different eyes of the subject is measured through the first eye optometry component 19, the optical axis of the refractive objective measurement module in the first eye optometry component 19 can be coaxial with the optical axis of the eyeball 1 fixating on the first sight mark image.

[0032] When the human eye is looking at an object, the visual axis of the human eye optical system and the optical axis of the human eye optical system are usually not coincident. The optical axis of the human eye optical system is usually on the temporal side of the visual axis of the human eye optical system corresponding to the eye, that is, the visual axis of the left eye and the right eye of the subject are deflected in opposite directions relative to their optical axes. When the subject's eyeball 1 is objectively measured for refractive error, the subject's eyeball 1 needs to look at the first sight mark image to prevent the subject's eyeball 1 from rotating, so that the optical axis of the objective refractive measurement module is coaxial with the optical axis of the eyeball 1 optical system, so as to perform objective refractive measurement on the subject's eyeball 1. However, in the present application, the first eye optometry component 19 needs to perform objective refractive measurement on the left eye and the right eye of the subject respectively. The state of the first subjective visual function test module when measuring a certain eye cannot simultaneously meet the requirements of measuring the other eye, so that when the other eye looks at the first sight mark image in the first subjective visual function test module, its optical axis cannot be coaxial with the optical axis of the objective refractive measurement module, thereby affecting the accuracy of the measurement result. Therefore, in this embodiment, the first subjective visual function test module is at least partially movably arranged in the first eye optometry component 19, so that the optometry image presented by the first optometry display device 8 can adapt to the differences in the optical systems of the left and right eyes, and when objective refractive error measurements are performed on different eyeballs 1, the optical axis of the refractive objective measurement module in the first eye optometry component 19 can be coaxial with the optical axis of the eyeball 1 that is gazing at the first optometry image.

[0033] Some implementations of the first subjective visual function test module are described in more detail below.

[0034] In some embodiments, the first eye optometry assembly 19 also includes a first rotating mechanism 26, and the first sight mark display device 8 and the first sight mark objective lens 11 are both arranged on the first rotating mechanism 26, and the first rotating mechanism 26 can drive the first sight mark display device 8 and the first sight mark objective lens 11 to rotate as a whole. The angle between the optical axis and the visual axis of the human eye optical system is usually about 5°, so the measurement requirements for different eyes can be met by making the optical axis of the first subjective visual function test module adjustable and deflected by an angle of about 10°. In this embodiment, the rotation of the optical axis of the first subjective visual function test module is achieved by rotating the first sight mark display device 8 and the first sight mark objective lens 11 as a whole. The first rotating mechanism 26 can be a turntable driven by a motor, and the first sight mark display device 8 and the first sight mark objective lens 11 are arranged on the turntable.

[0035] In some embodiments, the first subjective visual function test module further includes a first reflector 12, and the first sight mark image displayed by the first sight mark display device 8 can be projected onto the eyeball 1 of the subject through the first sight mark objective lens 11, the first reflector 12, and other optical path structures in the first eye optometry component 19; wherein the first reflector 12 is arranged on the first rotating mechanism 26, and the first rotating mechanism 26 can drive the first sight mark display device 8, the first sight mark objective lens 11, and the first reflector 12 to rotate as a whole. In this embodiment, the first sight mark display device 8, the first sight mark objective lens 11, and the first reflector 12 rotate as a whole to realize the rotation of the optical axis of the first subjective visual function test module.

[0036] In some embodiments, the first subjective visual function test module further includes a first reflector 12, and the first sight mark image displayed by the first sight mark display device 8 can be projected onto the eyeball 1 of the subject through the first sight mark objective lens 11, the first reflector 12, and other optical path structures in the first eye optometry component 19; the first eye optometry component 19 also includes a second rotating mechanism, the first reflector 12 is arranged on the second rotating mechanism, and the second rotating mechanism can drive the first reflector 12 to rotate. In this embodiment, the rotation of the optical axis of the first subjective visual function test module is achieved by changing the angle of the first reflector 12. The second rotating mechanism can be a turntable driven by a motor, and the first reflector 12 is arranged on the turntable.

[0037] In some embodiments, the first eye optometry assembly 19 further includes a translation mechanism, the first sight mark display device 8 is disposed on the translation mechanism, and the translation mechanism is configured to drive the first sight mark display device 8 to translate in a direction perpendicular to the optical axis of the first sight mark objective lens 11. In this embodiment, the objective refractive error measurement requirements of the left and right eyes are met by translating the first sight mark display device 8 in a direction perpendicular to the optical axis of the first sight mark objective lens 11.

[0038] like Figure 1As shown, in some embodiments, the refractive objective measurement module in the first eye optometry component 19 includes a light source 9, a collimating objective lens 10, a first relay telescope 6, and a wavefront sensor 7. After being collimated by the collimating objective lens 10, the light emitted by the light source 9 can reach the fundus of the subject along the optical path of the first eye optometry component 19, and after being reflected by the fundus of the subject, it passes through the first relay telescope 6 along the optical path of the first eye optometry component 19 to reach the wavefront sensor 7. Exemplarily, the light source 9 may be a near-infrared beacon light source 9, and the wavefront sensor 7 may be a Hartmann camera.

[0039] In some embodiments, the refractive objective measurement module in the first eye test component 19 also includes a first beam splitter 13 and a second beam splitter 5, and the first subjective visual function test module also includes a first reflector 12; after the light emitted by the light source 9 is collimated by the collimating objective lens 10, it can be reflected by the first beam splitter 13 and the second beam splitter 5 in sequence to reach the fundus of the subject, and after being reflected by the fundus of the subject, it passes through the second beam splitter 5 and the first relay telescope 6 in sequence to reach the wavefront sensor 7; the first sight mark image displayed by the first sight mark display device 8 can pass through the first sight mark objective lens 11 to reach the first reflector 12, and after being reflected by the first reflector 12, it passes through the first beam splitter 13 to reach the second beam splitter 5, and is reflected by the second beam splitter 5 to the eyeball 1 of the subject; the second subjective visual function test module includes a second sight mark display device 18 and a second sight mark objective lens 17, and the second sight mark image displayed by the second sight mark display device 18 can be projected onto the eyeball 1 of the subject through the second sight mark objective lens 17. The optical path structure of the first eye optometry component 19 and the optical path structure of the second eye optometry component 20 can be arranged in a housing of the binocular optometry device.

[0040] In some embodiments, the first eye optometry component 19 further includes a first refractive correction component, the light emitted by the light source 9 reaches the fundus of the subject after passing through the first refractive correction component, and after being reflected by the fundus of the subject, the light reaches the wavefront sensor 7 after passing through the first refractive correction component, and the first sight mark image is projected onto the eyeball 1 of the subject after passing through the first refractive correction component; the second eye optometry component 20 further includes a second refractive correction component, and the second sight mark image is projected onto the eyeball 1 of the subject after passing through the second refractive correction component. In this embodiment, the binocular optometry device integrates the refractive correction component, and can realize subjective optometry after refractive correction.

[0041] The first refractive correction component and the second refractive correction component may have the same structure. For example, the first refractive correction component and the second refractive correction component may include an astigmatism compensation component and a focusing optical component. The astigmatism compensation component is used to correct astigmatism, and the focusing optical component is used to correct defocus. The astigmatism compensation component of the first refractive correction component includes a first cylindrical mirror pair 4, and the astigmatism compensation component of the second refractive correction component includes a second cylindrical mirror pair 16. The focusing optical component of the first refractive correction component includes a second relay telescope 3, and the focusing optical component of the second refractive correction component includes a third relay telescope 15. In another embodiment, the focusing optical component includes a second reflector, a first lens, a third reflector, a fourth reflector, a second lens, and a fifth reflector. When the light passing through the cylindrical mirror pair enters the focusing optical component, it is reflected by the second reflector and then passes through the first lens, and then is reflected by the third reflector and the fourth reflector in sequence, passes through the second lens, and then is reflected by the fifth reflector to the eyeball 1 of the subject. In this embodiment, the astigmatism compensation component may include a cylindrical mirror pair formed by two cylindrical mirrors and a rotating mechanism. The cylindrical mirror pair can be set at the pupil conjugate position of the eyeball 1; the rotating mechanism includes two coaxial rotating cylinders, bearings, two gears and two micro motors. One end of each rotating cylinder is made into a gear structure, and a gear is fixed on the shaft of each micro motor. One rotating cylinder is installed in another rotating cylinder through a bearing, forming a set structure; two cylindrical mirrors are respectively installed on the two coaxial rotating cylinders. The gears on each rotating cylinder are meshed with the gears on the shafts of the two micro motors. The rotation of the micro motor drives the gears on its shaft to rotate, and the rotating cylinder is driven to rotate through the gear transmission, so that the rotation of the two cylindrical mirrors can be independently controlled, and the astigmatism compensation is realized through the cylindrical mirror astigmatism synthesis formula. The rotating mechanism realizes limit and motion zeroing through a photoelectric switch.

[0042] In this embodiment, in the case where the focusing optical component includes the second relay telescope 3 or the third relay telescope 15, the nose limiter 23 and the lens close to the eyeball 1 in the second relay telescope 3 or the third relay telescope 15 can form a fixed module, and the other parts of the monocular optical path are placed on a horizontal sliding plate to form a mobile module, and the mobile module is horizontally moved close to or away from the fixed structure to achieve focusing through a translation mechanism. In the case where the focusing optical component includes the second reflector, the first lens, the third reflector, the fourth reflector, the second lens and the fifth reflector, the third reflector and the fourth reflector can be placed on a horizontal sliding plate to form a mobile module, and the other parts of the monocular optical path are composed of a fixed module, and the mobile module is moved close to or away from the fixed structure along the vertical optical axis through a translation mechanism to achieve focusing. The translation mechanism can be selected from a ball screw and a linear screw, and the limit switch is used to achieve the limit and motion zeroing.

[0043] In some embodiments, when the subject is tested by using a binocular optometry device, the first eye optometry component 19 can be aligned with the pupil position of the first eye. When the first eye optometry component 19 is reset, it is located at the first position of the base 21. The first position can be the position of the optical axis of the first eye optometry component 19 when it is in the reset position. When the subject is tested, the reset first eye optometry component 19 starts from the first position and moves to align with the eye axis of the subject's eyeball 1; the second eye optometry component 20 can be aligned with the pupil position of the second eye. When the second eye optometry component 20 is reset, it is located at the second position of the base 21. The second position can be the position of the optical axis of the second eye optometry component 20 when it is in the reset position. When the subject is tested, the reset second eye optometry component 20 starts from the second position and moves to align with the eye axis of the subject's eyeball 1. The binocular optometry device may further include a jaw limiter 22 and a nose limiter 23, wherein the jaw limiter 22 is disposed on the base 21 and is used to limit the lower jaw of the subject. When the binocular optometry device is used to perform optometry on the subject, the lower jaw of the subject may be supported by the jaw limiter 22 to achieve a preliminary limit on the position of the head of the subject. In some embodiments, the jaw limiter 22 may be "U"-shaped to accommodate the shape of the lower jaw of the subject, and the jaw limiter 22 may be connected to the base 21 via a bracket, and the jaw limiter 22 may remain relatively fixed to the base 21. The nose limiter 23 is arranged on the base 21, and is used to limit the bridge of the nose of the subject. The nose limiter 23 may include a crossbar, two hangers and two contact members. The support rod is connected to the middle position of the crossbar, and the two hangers are respectively arranged at the two ends of the crossbar and symmetrically arranged about the support rod. The two contact members are respectively connected to the two hangers. When the subject is tested by the binocular optometry device, the bridge of the nose of the subject is located between the two hangers, and the two contact members contact the two sides of the bridge of the nose of the subject respectively. In this embodiment, the nose limiter 23 may have a structure similar to the nose pads of glasses, and the contact members may be made of silicone to improve the comfort of the subject. In some embodiments, the distance between the nose limiter 23 and the jaw limiter 22 is adjustable. Preferably, the jaw limiter 22 may be arranged to be adjustable up and down to adjust the distance between the jaw limiter 22 and the nose limiter 23 to adapt to the face shapes of different subjects. When the binocular optometry device is used to test the subject, the bridge of the subject's nose can be limited by the nose limiter 23 to fix the tilt angle of the subject's head in coordination with the jaw limiter 22. In this embodiment, the position of the nose limiter 23 is kept fixed relative to both the first position and the second position, and when the binocular optometry device is used to test the subject, the common symmetry axis of the jaw limiter 22 and the nose limiter 23 is perpendicular to the line connecting the first eye and the second eye.In this way, for different subjects, through the common limitation of the jaw limiter 22 and the nose limiter 23, the central axis of the subject's face and the binocular optometry device have a definite relative position relationship, so as to obtain the data for calculating the monocular pupil distance of the subject, expand the functionality of the binocular optometry device, and shorten the fitting time.

[0044] Specifically, the offset of the nose limit portion 23 relative to the perpendicular bisector of the line connecting the first position and the second position in the direction of the line connecting the first position and the second position can be determined based on the structure of the binocular optometry device. When the subject is tested through the binocular optometry device, the jaw limit portion 22 and the nose limit portion 23 jointly limit the subject's head so that the midline position of the subject's nose bridge remains fixed relative to the first position and the second position. When the first eye optometry component 19 and the second eye optometry component 20 are aligned with the first eye and the second eye of the subject, a certain offset will be generated relative to the first position and the second position in the direction of the line connecting the first position and the second position respectively. After obtaining the offset, the monocular pupil distance data of the subject can be obtained by combining the distance between the first position and the second position and the offset of the nose limit portion 23 relative to the perpendicular bisector of the line connecting the first position and the second position in the direction of the line connecting the first position and the second position.

[0045] Combine the following Figure 3 The measurement principle of the monocular pupil distance of the binocular optometry device in this embodiment is described in more detail.

[0046] like Figure 3As shown, when the first eye optometry component 19 and the second eye optometry component 20 are reset, the first eye optometry component 19 and the second eye optometry component 20 are respectively located at the first position and the second position, and the distance between the first position and the second position is recorded as d. The nose stopper 23 and the jaw stopper 22 jointly stop the head of the subject, and at this time, the displacement of the midline position of the nose bridge of the subject relative to the perpendicular bisector of the line connecting the first position and the second position in the direction of the line connecting the first position and the second position is Δ. Since the nose stopper 23 remains fixed relative to the first position and the second position, the nose stopper 23 can be used as a reference benchmark. Δ is only related to the binocular optometry device. For a specified binocular optometry device, its Δ is determined, and the Δ value can be preset in the storage device of the binocular optometry device for measuring the monocular pupil distance. Taking the example that the spacing adjustment component adjusts the spacing between the first eye optometry component 19 and the second eye optometry component 20 only by changing the position of the second eye optometry component 20, when the subject is tested, the first eye optometry component 19 and the second eye optometry component 20 are respectively moved from the reset position by the moving component and the spacing adjustment component to align the pupil positions of the first eye and the second eye. After aligning the pupil positions of the first eye and the second eye, the offset d1 of the first eye optometry component 19 driven by the spacing adjustment component in the direction of the line connecting the first eye and the second eye can be obtained, and the offset d2 of the first eye optometry component 19 and the second eye optometry component 20 driven by the moving component in the direction of the line connecting the first eye and the second eye can be obtained. Figure 3 In the figure, moving to the left is negative and moving to the right is positive, then the pupil distance PD of both eyes is d+d1, the pupil distance LPD of the left eye is d / 2-d2+Δ, and the pupil distance RPD of the right eye is d / 2+d1+d2-Δ.

[0047] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the first eye optometry component 19 and the second eye optometry component 20 are respectively provided with a first image acquisition device 2 and a second image acquisition device 14, and the first image acquisition device 2 and the second image acquisition device 14 can obtain the position of the pupil, so that the controller can control the first eye optometry component 19 and the second eye optometry component 20 to track the pupil, and the binocular optometry device also includes ruler glasses 24, the ruler glasses 24 include a frame and lenses, and the lenses are arranged in the frame, wherein ruler grid lines 25 are also arranged on the lenses, and during at least part of the process of performing optometry on the subject through the binocular optometry device, the subject wears the ruler glasses 24, and at this time, the first image acquisition device 2 and the second image acquisition device 14 are used to capture the image of the subject's pupil on the ruler grid lines 25.

[0048] In this embodiment, the first image acquisition device 2 and the second image acquisition device 14 can both be a camera group including two cameras. The first image acquisition device 2 and the second image acquisition device 14 are respectively arranged on the side of the first eye optometry component 19 and the second eye optometry component 20 that is close to the eyeball 1. The first image acquisition device 2 and the second image acquisition device 14 constitute a positioning module of the eyeball 1. The positioning process of the eyeball 1 is as follows: the first image acquisition device 2 and the second image acquisition device 14 take the pupil images of both eyes in real time at a certain angle, and calculate the three-dimensional offset of the pupil center of both eyes relative to the calibration position according to a specific algorithm. According to the measured pupil center offset, the moving component, the spacing adjustment component and the height adjustment component drive the first eye optometry component 19 and the second eye optometry component 20 to move as a whole in five directions: eye height, pupil distance, up and down, left and right, and front and back, and control the optical axis of the first eye optometry component 19 and the second eye optometry component 20 to align with the visual axis of each eye through a specific algorithm to complete the automatic positioning and tracking of both eyes. The moving component can drive the first eye optometry component 19, the second eye optometry component 20, the spacing adjustment component and the height adjustment component to move in three directions: up and down, left and right, and front and back. The moving component, the spacing adjustment component and the height adjustment component can achieve limit and movement zeroing through limit switches.

[0049] like Figure 4 As shown, further, in this embodiment, the pupil height and pupil distance data of the subject can also be obtained by using the ruler glasses 24. Specifically, the subject can wear the ruler glasses 24 during the optometry process. After the eyeball 1 is positioned, the first image acquisition device 2 and the second image acquisition device 14 respectively take pictures of the first eye and the second eye of the subject to obtain left and right eye images, visually obtain the positions of the through holes of both eyes on the ruler grid lines 25 in the left and right eye images, and then directly refer to the ruler grid lines 25 to read out the pupil distance and pupil height data (when the position relationship between the ruler grid lines 25 and the frame, the size of the frame, and the scale of the ruler grid lines 25 are known), or the pupil distance and pupil height data can be measured by using the frame in conjunction with a ruler, a measuring tape, or other tools.

[0050] When using the binocular optometry device provided in the embodiment of the present application to perform optometry on the subject, the first eye and the second eye can first share the objective refractive measurement module to achieve objective measurement of binocular refractive errors, and then respectively use the refractive correction optical path in the left and right eye optical paths and the subjective visual function test module to achieve refractive correction and subjective optometry. During the subjective optometry process, according to the subjective visual perception, the focusing component is used to fine-tune the defocus size, and the astigmatism compensation component is used to fine-tune the size and axis of the synthetic astigmatism until the best subjective corrected visual quality is obtained, and the monocular subjective optometry is completed. After the subjective optometry of the left and right eyes is completed, the binocular subjective optometry process is performed, and finally the best and most accurate refractive correction prescription for both eyes is given. After the refractive correction is completed, the refractive correction state of the left eye or the right eye can be maintained, and the objective refractive measurement module can perform human eye refractive measurement again to obtain the corrected human eye residual aberration data. The above-mentioned refractive residual measurement function can objectively evaluate the accuracy of the correction prescription without inserting lenses. It is suitable for eye examination before refractive surgery, eye examination prescription evaluation, etc., to avoid the problem that the accuracy of the result is affected by lens positioning, lens reflection and other problems when using insert lenses for evaluation.

[0051] Based on the above-mentioned embodiments of the present application, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0052] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are only for illustration and not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A binocular optometry device for collecting data of a subject's first eye and second eye, characterized in that: include: Pedestal; A first eye optometry component, the first eye optometry component is movably arranged on the base, and the first eye optometry component comprises a first subjective visual function test module for performing subjective optometry on the first eye and a refraction objective measurement module capable of performing objective refraction error measurement on the first eye; a second eye optometry component, the second eye optometry component is movably arranged on the base, the second eye optometry component comprises a second subjective visual function test module for performing subjective optometry on the second eye, but does not comprise a refraction objective measurement module capable of performing objective refraction error measurement on the second eye; Wherein, when the first eye and the second eye of the subject remain fixed relative to the base, the first eye optometry component is configured to be able to move to the position of the second eye, so as to measure the objective refractive error of the second eye through the refractive objective measurement module in the first eye optometry component.

2. The binocular optometry device according to claim 1, characterized in that: Also includes: A moving component, the moving component is arranged on the base, the first eye optometry component and the second eye optometry component are arranged on the moving component, and the moving component can drive the first eye optometry component and the second eye optometry component to move as a whole at least along the direction of the line connecting the first eye and the second eye of the subject; A spacing adjustment component, wherein the spacing adjustment component is arranged on the moving component, the first eye optometry component is arranged on the spacing adjustment component, and the spacing adjustment component can drive the first eye optometry component to move along the direction of the line connecting the first eye and the second eye of the subject.

3. The binocular optometry device according to claim 1, characterized in that: The first subjective visual function test module includes a first sight mark display device and a first sight mark objective lens. The first sight mark image displayed by the first sight mark display device can be projected onto the eyeball of the test subject through the first sight mark objective lens and other optical path structures in the first eye optometry component. When the objective refractive error of the eyeball of the test subject is measured, the eyeball of the test subject fixes on the first sight mark image. Among them, the first subjective visual function test module is at least partially movably arranged in the first eye optometry component, so that when the objective refractive error measurement of different eyes of the subject is performed through the first eye optometry component, the optical axis of the refractive objective measurement module in the first eye optometry component can be coaxial with the optical axis of the eyeball that is gazing at the first sight mark image.

4. The binocular optometry device according to claim 3, characterized in that: The first eye test assembly also includes a first rotating mechanism, and the first sight mark display device and the first sight mark objective lens are both arranged on the first rotating mechanism. The first rotating mechanism can drive the first sight mark display device and the first sight mark objective lens to rotate as a whole.

5. The binocular optometry device according to claim 4, characterized in that: The first subjective visual function test module further includes a first reflector, and the first sight mark image displayed by the first sight mark display device can be projected onto the eyeball of the subject through the first sight mark objective lens, the first reflector, and other optical path structures in the first eye optometry assembly; Wherein, the first reflector is arranged on the first rotating mechanism, and the first rotating mechanism can drive the first sight mark display device, the first sight mark objective lens and the first reflector to rotate as a whole.

6. The binocular optometry device according to claim 3, characterized in that: The first subjective visual function test module further includes a first reflector, and the first sight mark image displayed by the first sight mark display device can be projected onto the eyeball of the subject through the first sight mark objective lens, the first reflector, and other optical path structures in the first eye optometry assembly; The first eye test assembly also includes a second rotating mechanism, the first reflector is arranged on the second rotating mechanism, and the second rotating mechanism can drive the first reflector to rotate.

7. The binocular optometry device according to claim 3, characterized in that: The first eye test assembly also includes a translation mechanism, the first sight mark display device is arranged on the translation mechanism, and the translation mechanism is configured to drive the first sight mark display device to translate in a direction perpendicular to the optical axis of the first sight mark objective lens.

8. The binocular optometry device according to claim 3, characterized in that: The refractive objective measurement module in the first-eye optometry component includes a light source, a collimating objective lens, a first relay telescope and a wavefront sensor. The light emitted by the light source can be collimated by the collimating objective lens and then reach the fundus of the subject along the optical path of the first-eye optometry component. After being reflected by the fundus of the subject, the light can pass through the first relay telescope along the optical path of the first-eye optometry component and reach the wavefront sensor.

9. The binocular optometry device according to claim 8, characterized in that: The refraction objective measurement module in the first eye optometry assembly further includes a first spectroscope and a second spectroscope, and the first subjective visual function test module further includes a first reflector; After being collimated by the collimating objective lens, the light emitted by the light source can be reflected by the first beam splitter and the second beam splitter in sequence to reach the fundus of the subject, and after being reflected by the fundus of the subject, it can pass through the second beam splitter and the first relay telescope in sequence to reach the wavefront sensor; The first sight mark image displayed by the first sight mark display device can pass through the first sight mark objective lens to reach the first reflector, and after being reflected by the first reflector, pass through the first beam splitter to reach the second beam splitter, and be reflected by the second beam splitter to the eyeball of the subject; The second subjective visual function test module includes a second sight mark display device and a second sight mark objective lens. The second sight mark image displayed by the second sight mark display device can be projected onto the eyeball of the subject through the second sight mark objective lens.

10. The binocular optometry device according to claim 9, characterized in that: The first eye optometry component also includes a first refractive correction component. The light emitted by the light source reaches the fundus of the subject after passing through the first refractive correction component. After being reflected by the fundus of the subject, the light reaches the wavefront sensor after passing through the first refractive correction component. The first sight mark image is projected onto the eyeball of the subject after passing through the first refractive correction component. The second eye optometry component also includes a second refractive correction component, and the second sight mark image is projected onto the eyeball of the subject after passing through the second refractive correction component.

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