Binocular optometry device

Abstract

The utility model provides a binocular optometry device which comprises a base, a first eye optometry assembly, a second eye optometry assembly, a jaw limiting part and a nose limiting part, the first eye optometry assembly is arranged on the base and used for optometry of a first eye, and when reset, the first eye optometry assembly is located at a first position of the base; the second eye optometry assembly is arranged on the base and used for optometry of a second eye, and the second eye optometry assembly is located at the second position of the base when reset; the jaw limiting part is arranged on the base and is used for limiting the lower jaw of the tested person; the jaw limiting part is arranged on the base and used for limiting the nose bridge of a testee, the position of the nose limiting part is kept fixed relative to the first position and the second position, and when optometry is conducted on the testee through the binocular optometry device, the common symmetry axis of the jaw limiting part and the nose limiting part is perpendicular to the connecting line of the first eye and the second eye. According to the binocular optometry device provided by the invention, the single-eye pupil distance data of the testee can be obtained.

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] When using glasses to correct refractive errors, in order to ensure the quality of correction, the optical center position of the lens must match the pupil position, only in this way can the glasses have an ideal optical compensation effect. Therefore, the measurement of pupil distance is an important part of optometry.

[0003] At present, the methods of measuring pupil distance include ruler measurement, pupil distance meter measurement, etc. When measuring pupil distance with a ruler, the measurement result will be affected by the distance of the examiner, and the result will fluctuate greatly; the pupil distance meter is a special instrument for pupil distance measurement, which is inconvenient to be integrated into ophthalmic examination and optometry type equipment.

[0004] In the related art, some types of computer ophthalmometers have the function of measuring pupil distance. However, due to functional and structural limitations, computer ophthalmometers can only measure the pupil distance of both eyes and do not have the function of measuring the pupil distance of one eye. Utility Model Content

[0005] In order to at least partially solve the problem that the computer ophthalmometer in the related art does not have the monocular pupil distance measurement function, an embodiment of the present application provides a binocular ophthalmometer for collecting data of a first eye and a second eye of a subject, the binocular ophthalmometer comprises a base, a first eye ophthalmometer component, a second eye ophthalmometer component, a jaw limiter and a nose limiter, the first eye ophthalmometer component is arranged on the base, and is used to perform optometry on the first eye, when the subject is tested by the binocular ophthalmometer, the first eye ophthalmometer component can move on the base in a direction parallel to the line connecting the first eye and the second eye, wherein when the first eye ophthalmometer component is reset, it is located at a first position of the base; the second eye ophthalmometer component is arranged on the base, and the second eye ophthalmometer component is arranged on the base, and the first eye ophthalmometer component is arranged on the base, and the second ... It is arranged on the base and is used for testing the second eye. When the subject is tested through the binocular optometry device, the second eye optometry component can move on the base in a direction parallel to the line connecting the first eye and the second eye, wherein the second eye optometry component is located at the second position of the base when it is reset; the jaw limiter is arranged on the base and is used to limit the lower jaw of the subject; the nose limiter is arranged on the base and is used to limit the bridge of the nose of the subject, wherein the position of the nose limiter remains fixed relative to the first position and the second position, and when the subject is tested through the binocular optometry device, the common symmetry axis of the jaw limiter and the nose limiter is perpendicular to the line connecting the first eye and the second eye.

[0006] In some embodiments, the binocular optometry device further includes a three-dimensional moving component and a spacing adjustment component, wherein the first eye optometry component and the second eye optometry component are arranged on a base via the three-dimensional moving component, and the three-dimensional moving component is arranged to enable the first eye optometry component and the second eye optometry component to move as a whole in three mutually orthogonal directions; the spacing adjustment component is arranged on the three-dimensional moving component, and is used to adjust the spacing between the first eye optometry component and the second eye optometry component; wherein at least one of the first eye optometry component and the second eye optometry component is connected to the three-dimensional moving component via the spacing adjustment component so as to realize movement in the plane where the first eye optometry component and the second eye optometry component are located relative to the three-dimensional moving component.

[0007] In some embodiments, the first-eye optometry component includes a subjective visual function test module and an objective refraction measurement module, the subjective visual function test module is used to perform subjective optometry on the first eye, and the objective refraction measurement module includes a light source and a wavefront sensor. When the first eye is tested through the first-eye optometry component, the light emitted by the light source reaches the first eye through the optical path structure of the first-eye optometry component, and after being reflected by the first eye, reaches the wavefront sensor through the optical path structure of the first-eye optometry component to obtain objective refraction data of the first eye; the second-eye optometry component includes a subjective visual function test module, and the subjective visual function test module is used to perform subjective optometry on the second eye, and the second-eye optometry component does not include an objective refraction measurement module; wherein, when the subject is tested through the binocular optometry device, the stroke of the three-dimensional moving component and the spacing adjustment component is set to enable the first-eye optometry component to move to the position of the second eye, so as to obtain objective refraction data of the second eye through the first-eye optometry component.

[0008] In some embodiments, the first eye optometry component is connected to the three-dimensional moving component via a distance adjustment component so that the first eye optometry component can move relative to the three-dimensional moving component in the plane where the first eye optometry component and the second eye optometry component are located.

[0009] In some embodiments, the binocular optometry device further comprises a height adjustment component, which is disposed on the three-dimensional moving component and is used to adjust the height difference between the first eye optometry component and the second eye optometry component; wherein at least one of the first eye optometry component and the second eye optometry component is connected to the three-dimensional moving component via the height adjustment component to achieve movement relative to the three-dimensional moving component in a direction perpendicular to the plane where the first eye optometry component and the second eye optometry component are located.

[0010] In some embodiments, the second eye optometry component is connected to the three-dimensional moving component via a height adjustment component so that the second eye optometry component can move relative to the three-dimensional moving component in a direction perpendicular to the plane where the first eye optometry component and the second eye optometry component are located.

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

[0012] The subjective visual function test module of the second eye optometry component includes a second sight mark display device. The optical path structure of the second eye optometry component includes a second sight mark objective lens and a refractive correction optical path. The sight mark image displayed by the second sight mark display device passes through the second sight mark objective lens and then passes through the refractive correction optical path and is projected onto the eyeball of the subject.

[0013] In some embodiments, the refractive correction optical path in the first-eye optometry component and the second-eye optometry component includes 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; wherein, the astigmatism compensation component includes a cylindrical mirror pair, and the cylindrical mirror pair is arranged at a pupil conjugate position of the eyeball; the focusing optical component includes a second relay telescope; or, the focusing optical component includes a second reflector, a first lens, a third reflector, a fourth reflector, a second lens, and a fifth reflector, and 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 of the subject.

[0014] In some embodiments, the first-eye optometry component and the second-eye optometry component are respectively provided with a first image acquisition device and a second image acquisition device, and the binocular optometry device also includes ruler glasses, the ruler glasses include a frame and lenses, and the lenses are arranged in the frame, wherein ruler grid lines 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, and the first image acquisition device and the second image acquisition device are used to acquire images of the subject's pupils on the ruler grid lines.

[0015] In some embodiments, the jaw limiting portion is "U"-shaped, the jaw limiting portion is connected to the base through a bracket, and the nose limiting portion is connected to the jaw limiting portion through a support rod.

[0016] In some embodiments, the nose limiting portion includes a cross bar, two hangers and two contact members. The support rod is connected to the middle position of the cross bar. The two hangers are respectively arranged at both ends of the cross bar and are symmetrically arranged about the support rod. The two contact members are respectively connected to the two hangers. When the subject is tested by using a binocular optometry device, the bridge of the nose of the subject is located between the two hangers, and the two contact members respectively contact the two sides of the bridge of the nose of the subject.

[0017] The binocular optometry device provided by the embodiment of the present application can obtain the monocular pupil distance data of the test subject by using the nose limiter whose position is fixed relative to the first position and the second position as a reference reference, thereby expanding the functionality of the binocular optometry device and shortening the fitting time. Specifically, the offset of the nose limiter 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 test subject is tested by the binocular optometry device, the jaw limiter and the nose limiter jointly limit the head of the test subject so that the midline position of the bridge of the nose of the test subject is kept fixed relative to the first position and the second position. When the first eye optometry component and the second eye optometry component are aligned with the first eye and the second eye of the test 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 test subject can be obtained by combining the distance between the first position and the second position and the offset of the nose limiter 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 is a schematic structural diagram of a binocular optometry device provided in an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a binocular optometry device provided in an embodiment of the present application for measuring pupil distance;

[0021] Figure 3 is a schematic diagram of the optical path of a binocular optometry device provided in an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of the optical path of a binocular optometry device provided by another embodiment of the present application;

[0023] Figure 5is a schematic diagram of the optical path of a binocular optometry device provided by another embodiment of the present application;

[0024] Figure 6 is a schematic diagram of the optical path of a binocular optometry device provided by another embodiment of the present application;

[0025] Figure 7 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.

[0026] The reference numerals are as follows:

[0027] 1. First eye optometry component; 2. Second eye optometry component; 3. Base; 4. First image acquisition device; 5. Second image acquisition device; 6. Jaw stopper; 7. Nose stopper; 8. Ruler glasses; 9. Ruler grid lines; 10. Eyeball; 11. Second sight mark display device; 12. Focusing optical component; 13. Cylindrical mirror pair; 14. Second beam splitter; 15. First relay telescope; 16. Wavefront sensor; 17. First sight mark display device; 18. Light source; 19. First collimating objective lens; 20. First sight mark objective lens; 21. First reflector; 22. First beam splitter; 23. Second sight mark objective lens; 24. Second reflector; 25. First lens; 26. Third reflector; 27. Fourth reflector; 28. Second lens; 29. ​​Fifth reflector.

[0028] 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

[0029] 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.

[0030] 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.

[0031] In order to at least partially solve the problem that the computer ophthalmometer in the related art does not have the function of measuring the pupil distance of a single eye, an embodiment of the present application provides a binocular ophthalmometer 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 ophthalmometer may be a computer ophthalmometer.

[0032] Figure 1 FIG. 1 is a schematic diagram of the 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 As shown, the binocular optometry device may include a base 3 , a first eye optometry component 1 , a second eye optometry component 2 , a jaw limiting portion 6 and a nose limiting portion 7 .

[0033] The first eye optometry component 1 is arranged on the base 3, and is used for optometry of the first eye. When the subject is tested by the binocular optometry device, the first eye optometry component 1 can be aligned with the pupil position of the first eye. The first eye optometry component 1 can move on the base 3 in a direction parallel to the line connecting the first eye and the second eye to adapt to subjects with different pupil distances. For example, the first eye optometry component 1 can be movably arranged on the base 3 by a screw structure or a slide groove and slide rail structure to achieve movement in a direction parallel to the line connecting the first eye and the second eye. Among them, when the first eye optometry component 1 is reset, it is located at the first position of the base 3, that is, in this embodiment, the first eye optometry component 1 uses the first position as the reset position. The first position can be the position where the optical axis of the first eye optometry component 1 is located when it is in the reset position. When the subject is tested, the reset first eye optometry component 1 starts from the first position and moves to align with the eye axis of the subject's eyeball 10. The process of aligning the first eye optometry component 1 with the eyeball 10 of the subject can be automatically controlled by the controller of the binocular optometry device based on data collected by a sensor (such as an image acquisition device).

[0034] The second eye optometry component 2 is arranged on the base 3, and is used for optometry of the second eye. When the subject is tested by the binocular optometry device, the second eye optometry component 2 can be aligned with the pupil position of the second eye. The second eye optometry component 2 can move on the base 3 in a direction parallel to the line connecting the first eye and the second eye to adapt to subjects with different pupil distances. For example, the second eye optometry component 2 can be movably arranged on the base 3 by a screw structure or a slide groove and slide rail structure to achieve movement in a direction parallel to the line connecting the first eye and the second eye. Among them, when the second eye optometry component 2 is reset, it is located at the second position of the base 3, that is, in this embodiment, the second eye optometry component 2 uses the second position as the reset position, and the second position can be the position where the optical axis of the second eye optometry component 2 is located when it is in the reset position. When the subject is tested, the reset second eye optometry component 2 starts from the second position and moves to align with the eye axis of the subject's eyeball 10. The process of aligning the second eye optometry component 2 with the eyeball 10 of the subject can be automatically controlled by the controller of the binocular optometry device based on data collected by a sensor (such as an image acquisition device).

[0035] The jaw limiter 6 is disposed on the base 3 and is used to limit the lower jaw of the subject. When the subject is tested using the binocular optometry device, the lower jaw of the subject can be supported by the jaw limiter 6 to achieve a preliminary limit on the position of the subject's head. In some embodiments, the jaw limiter 6 can be "U"-shaped to adapt to the shape of the lower jaw of the subject, and the jaw limiter 6 can be connected to the base 3 through a bracket, and the jaw limiter 6 can remain relatively fixed with the base 3.

[0036] The nose limiter 7 is arranged on the base 3, and is used to limit the bridge of the nose of the subject. When the subject is tested using the binocular optometry device, the bridge of the nose of the subject can be limited by the nose limiter 7, so as to cooperate with the jaw limiter 6 to fix the tilt angle of the head of the subject. Further, in the present embodiment, the position of the nose limiter 7 is kept fixed relative to the first position and the second position, and when the subject is tested by the binocular optometry device, the common symmetry axis of the jaw limiter 6 and the nose limiter 7 is perpendicular to the line connecting the first eye and the second eye. In this way, for different subjects, the facial central axis of the subject and the binocular optometry device have a determined relative position relationship through the common limitation of the jaw limiter 6 and the nose limiter 7, so that the data of calculating the monocular pupil distance of the subject can be obtained. In some embodiments, the nose limiter 7 can be connected to the jaw limiter 6 by a support rod. Of course, in other embodiments, the nose limiter 7 can also be directly connected to the base 3. In some embodiments, the nose limiter 7 may include a crossbar, two hangers and two contact members. The support rod is connected to the middle position of the crossbar. The two hangers are respectively arranged at the two ends of the crossbar and are 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 7 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 7 and the jaw limiter 6 is adjustable. Preferably, the jaw limiter 6 can be set to be adjustable up and down to adjust the distance between the jaw limiter 6 and the nose limiter 7 to adapt to the face shapes of different subjects.

[0037] The binocular optometry device provided in the embodiment of the present application can obtain the monocular pupillary distance data of the subject by using the nose limiter 7 whose position is kept fixed relative to the first position and the second position as a reference benchmark, thereby expanding the functionality of the binocular optometry device and shortening the fitting time.

[0038] Specifically, the offset of the nose limit portion 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 and the nose limit portion 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 and the second eye optometry component are aligned with the first eye and the second eye of the subject, they will respectively generate a certain offset relative to the first position and the second position in the direction of the line connecting the first position and the second position. 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 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.

[0039] In some embodiments, the binocular optometry device further includes a three-dimensional moving component and a spacing adjustment component, wherein the first eye optometry component 1 and the second eye optometry component 2 are arranged on the base 3 through the three-dimensional moving component, and the three-dimensional moving component is arranged to enable the first eye optometry component 1 and the second eye optometry component 2 to move as a whole in three mutually orthogonal directions. The spacing adjustment component is arranged on the three-dimensional moving component, and is used to adjust the spacing between the first eye optometry component 1 and the second eye optometry component 2; wherein at least one of the first eye optometry component 1 and the second eye optometry component 2 is connected to the three-dimensional moving component through the spacing adjustment component to achieve movement in the plane where the first eye optometry component 1 and the second eye optometry component 2 are located relative to the three-dimensional moving component. That is to say, the spacing adjustment component can adjust the spacing between the first eye optometry component 1 and the second eye optometry component 2 only by changing the position of the first eye optometry component 1; it can also adjust the spacing between the first eye optometry component 1 and the second eye optometry component 2 only by changing the position of the second eye optometry component 2; it can also adjust the spacing between the first eye optometry component 1 and the second eye optometry component 2 by changing the positions of the first eye optometry component 1 and the second eye optometry component 2 at the same time. In this embodiment, for the subject who undergoes optometry through the binocular optometry device, the three mutually orthogonal directions can be the up and down, left and right, and front and back directions of the subject, and the three-dimensional moving component and the spacing adjustment component can be driven by the motor through the structures such as the slide rail, the ball screw, and the linear screw to achieve movement in the specified direction. In this embodiment, by setting the three-dimensional moving component and the spacing adjustment component, the first eye optometry component 1 and the second eye optometry component 2 can be adjusted in multiple dimensions to better align the eyeball 10 of the subject.

[0040] Combine the following Figure 2 The measurement principle of the monocular pupil distance of the binocular optometry device in this embodiment is described in more detail.

[0041] like Figure 2As shown, when the first eye optometry component 1 and the second eye optometry component 2 are reset, the first eye optometry component 1 and the second eye optometry component 2 are located at the first position and the second position, respectively, and the distance between the first position and the second position is recorded as d. The nose stopper 7 and the jaw stopper 6 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 7 remains fixed relative to the first position and the second position, the nose stopper 7 can be used as a reference benchmark, and 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 distance adjustment component adjusts the distance between the first eye optometry component 1 and the second eye optometry component 2 only by changing the position of the second eye optometry component 2, when the subject is tested, the first eye optometry component 1 and the second eye optometry component 2 are respectively moved from the reset position through the three-dimensional moving component and the distance 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 driven by the distance 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 1 and the second eye optometry component 2 as a whole driven by the three-dimensional moving component in the direction of the line connecting the first eye and the second eye can be obtained. Figure 2 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.

[0042] In the related art, in order to realize binocular optometry, the first eye optometry component 1 and the second eye optometry component 2 usually have the same structure, which 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.

[0043] To at least partially address the technical problem of controlling the cost of binocular optometry devices, see Figure 3 , Figure 4 , Figure 5 ,and Figure 6In some embodiments, the first-eye optometry component 1 includes a subjective visual function test module and a refraction objective measurement module, the subjective visual function test module is used to perform subjective optometry on the first eye, and the refraction objective measurement module includes a light source 18 and a wavefront sensor 16. When the first eye is tested through the first-eye optometry component 1, the light emitted by the light source 18 reaches the first eye through the optical path structure of the first-eye optometry component 1, and after being reflected by the first eye, reaches the wavefront sensor 16 through the optical path structure of the first-eye optometry component 1 to obtain the objective refraction data of the first eye; the second-eye optometry component 2 includes a subjective visual function test module, and the subjective visual function test module is used to perform subjective optometry on the second eye, and the second-eye optometry component 2 does not include a refraction objective measurement module; wherein, when the subject is tested through the binocular optometry device, the stroke of the three-dimensional moving component and the spacing adjustment component is set to enable the first-eye optometry component 1 to move to the position of the second eye, so as to obtain the objective refraction data of the second eye through the first-eye optometry component 1. Exemplarily, the light source 18 may be a near-infrared beacon light source, and the wavefront sensor 16 may be a Hartmann camera.

[0044] In this embodiment, the first eye optometry component 1 and the second eye optometry component 2 adopt an asymmetric structure, and only the first eye optometry component 1 retains the objective refractive measurement module, while the second eye optometry component 2 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 1 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 1 to the second eye for measurement, thereby simplifying the structure of the second eye optometry component 2 while retaining the objective refractive measurement function, thereby reducing the cost of the binocular optometry device. It should be noted that, Figure 3-Figure 6 As shown, the first eye optometry component 1 can mainly measure the left eye of the subject, and the second eye optometry component 2 can measure the right eye of the subject; the first eye optometry component 1 can also mainly measure the right eye of the subject, and the second eye optometry component 2 can measure the left eye of the subject, that is, the first eye optometry component 1 and the second eye optometry component 2 are Figure 1 The positions in can be interchanged.

[0045] 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 is objectively measured for refractive error, the subject's eyeball needs to look at the visual mark image of the subjective visual function test module in the first eye optometry component to prevent the subject's eyeball from rotating, so that the optical axis of the objective refractive measurement module is coaxial with the optical axis of the eyeball optical system, so as to objectively measure the refractive error of the subject's eyeball. However, in this embodiment, the first eye optometry component needs to perform objective refractive measurement on the left eye and the right eye of the subject respectively, and 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 visual 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.

[0046] In order to at least partially solve the above problems, the subjective visual function test module of the first eye optometry component 1 is at least partially movably arranged in the first eye optometry component 1, so that when the objective refractive error measurement of different eyeballs of the subject is performed through the first eye optometry component 1, the optical axis of the refractive objective measurement module in the first eye optometry component 1 can be coaxial with the optical axis of the eyeball that is gazing at the first sight mark image. 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 subjective visual function test module adjustable to deflect by an angle of about 10°. In some embodiments, the first eye optometry component 1 also includes a first rotating mechanism, and the first sight mark display device 17 and the first sight mark objective lens 20 are both arranged on the first rotating mechanism, and the first rotating mechanism can drive the first sight mark display device 17 and the first sight mark objective lens 20 to rotate as a whole. In some embodiments, the first reflector 21 can also be arranged on the first rotating mechanism, and the first rotating mechanism can drive the first sight mark display device 17, the first sight mark objective lens 20 and the first reflector 21 to rotate as a whole. In other embodiments, the first eye optometry assembly 1 may include a second rotating mechanism, and the first reflector 21 is arranged on the second rotating mechanism. In this embodiment, the rotation of the optical axis of the subjective visual function test module is achieved by adjusting the angle of the first reflector 21 separately. The first rotating mechanism and the second rotating mechanism can be a turntable driven by a motor. In other embodiments, the first eye optometry assembly 1 may include a translation mechanism, and the first sight mark display device 17 is arranged on the translation mechanism, and the translation mechanism is configured to drive the first sight mark display device 17 to translate in a direction perpendicular to the optical axis of the first sight mark objective lens 20. 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 17 in a direction perpendicular to the optical axis of the first sight mark objective lens 20.

[0047] In some embodiments, the first eye optometry component 1 is connected to the three-dimensional moving component via a spacing adjustment component so that the first eye optometry component 1 can move relative to the three-dimensional moving component in the plane where the first eye optometry component 1 and the second eye optometry component 2 are located. In the present embodiment, in view of the situation that the first-eye optometry component 1 and the second-eye optometry component 2 adopt an asymmetric structure, the first-eye optometry component 1 is connected to the three-dimensional moving component through the spacing adjustment component, that is, at this time, the spacing between the first-eye optometry component 1 and the second-eye optometry component 2 is adjusted only by changing the position of the first-eye optometry component 1, while the position of the second-eye optometry component 2 relative to the three-dimensional moving component in the spacing adjustment direction remains unchanged. This arrangement can require a shorter stroke of the three-dimensional moving component that drives the first-eye optometry component 1 and the second-eye optometry component 2 to move as a whole when the objective refractive data of the second eye is measured by the first-eye optometry component 1. Instead, the movement of the first-eye optometry component 1 to the second eye is mainly realized by the spacing adjustment component, which is conducive to controlling the volume of the binocular optometry device; in addition, the control logic can be simplified, for example, the three-dimensional moving component can be moved a fixed distance so that it drives the second-eye optometry component 2 to deviate from the position aligned with the second eye to avoid the first-eye optometry component 1.

[0048] In some embodiments, the binocular optometry device further includes a height adjustment component, which is arranged on the three-dimensional moving component and is used to adjust the height difference between the first eye optometry component 1 and the second eye optometry component 2; wherein at least one of the first eye optometry component 1 and the second eye optometry component 2 is connected to the three-dimensional moving component through the height adjustment component to achieve movement relative to the three-dimensional moving component in a direction perpendicular to the plane where the first eye optometry component 1 and the second eye optometry component 2 are located. That is to say, the height adjustment component can adjust the height difference between the first eye optometry component 1 and the second eye optometry component 2 only by changing the position of the first eye optometry component 1; it can also adjust the height difference between the first eye optometry component 1 and the second eye optometry component 2 only by changing the position of the second eye optometry component 2; it can also adjust the height difference between the first eye optometry component 1 and the second eye optometry component 2 by changing the positions of the first eye optometry component 1 and the second eye optometry component 2 at the same time. In this embodiment, by setting the height adjustment component, the first eye optometry component 1 and the second eye optometry component 2 can be better adapted to subjects with different pupil heights. The height adjustment component can be moved in a specified direction through structures such as slide grooves, slide rails, ball screws, linear screws, etc. in conjunction with the drive of a motor.

[0049] In some embodiments, the second eye optometry component 2 is connected to the three-dimensional moving component through the height adjustment component, so that the second eye optometry component 2 can move relative to the three-dimensional moving component in a direction perpendicular to the plane where the first eye optometry component 1 and the second eye optometry component 2 are located. In this embodiment, the height difference between the first eye optometry component 1 and the second eye optometry component 2 is adjusted only by changing the position of the second eye optometry component 2, which can simplify the connection structure between the first eye optometry component 1 and the three-dimensional moving component.

[0050] See also Figure 3-Figure 6 In some embodiments, the subjective visual function test module of the first eye optometry component 1 includes a first sight mark display device 17, and the optical path structure of the first eye optometry component 1 includes a first collimating objective lens 19, a first beam splitter 22, a second beam splitter 14, a refractive correction optical path, a first reflecting mirror 21, a first sight mark objective lens 20, and a first relay telescope 15. The light emitted by the light source 18 can be collimated by the first collimating objective lens 19, and then reflected by the first beam splitter 22 and the second beam splitter 14 in sequence, pass through the refractive correction optical path to reach the eyeball 10 of the subject, and after being reflected by the fundus, pass through the refractive correction optical path, the second beam splitter 14, and the first relay telescope 15 in sequence. 5 reaches the wavefront sensor 16; the sight mark image displayed by the first sight mark display device 17 passes through the first sight mark objective lens 20, is reflected by the first reflector 21, passes through the first beam splitter 22 to reach the second beam splitter 14, is reflected by the second beam splitter 14, and is projected to the eyeball 10 of the subject through the refractive correction optical path; the subjective visual function test module of the second eye optometry component 2 includes the second sight mark display device 11, and the optical path structure of the second eye optometry component 2 includes the second sight mark objective lens 23 and the refractive correction optical path. The sight mark image displayed by the second sight mark display device 11 passes through the second sight mark objective lens 23, and then is projected to the eyeball 10 of the subject through the refractive correction optical path. In this embodiment, the optical path structure of the first eye optometry component 1 and the optical path structure of the second eye optometry component 2 can be arranged in the housing of the binocular optometry device.

[0051] The optical path structure of the first eye optometry component 1 can be divided into an objective refractive measurement optical path, a subjective visual function test optical path, and a refractive correction optical path. The objective refractive measurement optical path is formed by the first collimating objective lens 19, the first beam splitter 22, the second beam splitter 14, the focusing optical component 12, the cylindrical mirror pair 13, the first relay telescope 15, the light source 18, and the wavefront sensor 16; the subjective visual function test optical path is formed by the first sight mark display device 17, the first sight mark objective lens 20, the first reflector 21, the first beam splitter 22, the second beam splitter 14, the focusing optical component 12, and the cylindrical mirror pair 13; the refractive correction optical path is placed in the common optical path of the objective refractive measurement optical path and the subjective visual function test optical path.

[0052] The optical path structure of the second eye optometry component 2 can be divided into a subjective visual function test optical path and a refractive correction optical path. The subjective visual function test optical path is composed of a second sight mark display device 11, a second sight mark objective lens 23, a focusing optical component 12, and a cylindrical mirror pair 13.

[0053] In some embodiments, the refractive correction optical path in the first-eye optometry component 1 and the second-eye optometry component 2 includes an astigmatism compensation component and a focusing optical component 12, wherein the astigmatism compensation component is used to correct astigmatism, and the focusing optical component 12 is used to correct defocus; wherein the astigmatism compensation component includes a cylindrical mirror pair 13, and the focusing optical component 12 includes a second relay telescope; or, the focusing optical component 12 includes a second reflector 24, a first lens 25, a third reflector 26, a fourth reflector 27, a second lens 28, and a fifth reflector 29, and when the light passing through the cylindrical mirror pair 13 enters the focusing optical component 12, it is reflected by the second reflector 24 and then passes through the first lens 25, and then is reflected by the third reflector 26 and the fourth reflector 27 in sequence, passes through the second lens 28, and then is reflected by the fifth reflector 29 to the eyeball 10 of the subject.

[0054] In this embodiment, the astigmatism compensation component may include a cylindrical mirror pair 13 formed by two cylindrical mirrors and a rotating mechanism. The cylindrical mirror pair 13 may be arranged at the pupil conjugate position of the eyeball 10; 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.

[0055] In this embodiment, in the case where the focusing optical assembly 12 includes a second relay telescope, the nose limiter 7 and the lens close to the eyeball 10 in the second relay telescope 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 assembly 12 includes a second reflector 24, a first lens 25, a third reflector 26, a fourth reflector 27, a second lens 28 and a fifth reflector 29, the third reflector 26 and the fourth reflector 27 can be placed on a horizontal sliding plate to form a mobile module, and the other parts of the monocular optical path form 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.

[0056] like Figure 1 and Figure 7 As shown, in some embodiments, the first eye optometry component 1 and the second eye optometry component 2 are respectively provided with a first image acquisition device 4 and a second image acquisition device 5, and the first image acquisition device 4 and the second image acquisition device 5 can obtain the position of the pupil, so that the controller can control the first eye optometry component 1 and the second eye optometry component 2 to track the pupil, and the binocular optometry device also includes ruler glasses 8, the ruler glasses 8 include a frame and lenses, and the lenses are arranged in the frame, wherein ruler grid lines 9 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 8, and at this time, the first image acquisition device 4 and the second image acquisition device 5 are used to capture the image of the subject's pupil on the ruler grid lines 9.

[0057] In this embodiment, the first image acquisition device 4 and the second image acquisition device 5 can both be a camera group including two cameras, and the first image acquisition device 4 and the second image acquisition device 5 are respectively arranged on the side of the first eye optometry component 1 and the second eye optometry component 2 that is close to the eyeball 10, and the first image acquisition device 4 and the second image acquisition device 5 constitute a positioning module of the eyeball 10. The positioning process of the eyeball 10 is as follows: the first image acquisition device 4 and the second image acquisition device 5 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 three-dimensional moving component, the spacing adjustment component and the height adjustment component drive the first eye optometry component 1 and the second eye optometry component 2 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 1 and the second eye optometry component 2 to align with the visual axis of each eye through a specific algorithm, so as to complete the automatic positioning and tracking of both eyes. The three-dimensional moving component can drive the first-eye optometry component 1, the second-eye optometry component 2, 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 three-dimensional moving component, the spacing adjustment component and the height adjustment component can achieve limit and movement zeroing through limit switches.

[0058] like Figure 7 As shown, further, in this embodiment, the pupil height and pupil distance data of the subject can also be obtained by the ruler glasses 8. Specifically, the subject can wear the ruler glasses 8 during the optometry process. After the positioning of the eyeball 10 is completed, the first image acquisition device 4 and the second image acquisition device 5 respectively take pictures of the first eye and the second eye of the subject to obtain left and right eye images, and visually obtain the positions of the through holes of both eyes on the ruler grid lines 9 in the left and right eye images, and then directly refer to the ruler grid lines 9 to read out the pupil distance and pupil height data (when the position relationship between the ruler grid lines 9 and the frame, the size of the frame, and the scale of the ruler grid lines 9 are known), or the pupil distance and pupil height data are measured by the frame with a ruler, a tape measure or other tools.

[0059] 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.

[0060] 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.

[0061] 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, which is disposed on the base and is used to perform optometry on the first eye. When the subject is tested by the binocular optometry device, the first eye optometry component can move on the base in a direction parallel to a line connecting the first eye and the second eye, wherein the first eye optometry component is located at a first position of the base when it is reset; a second eye optometry component, the second eye optometry component is arranged on the base and is used to perform optometry on the second eye. When the subject is tested by the binocular optometry device, the second eye optometry component can move on the base in a direction parallel to the line connecting the first eye and the second eye, wherein the second eye optometry component is located at the second position of the base when it is reset; A jaw limiting portion, wherein the jaw limiting portion is arranged on the base, and is used to limit the lower jaw of the subject; a nose limiting portion, wherein the nose limiting portion is arranged on the base, and is used to limit the bridge of the nose of the subject, wherein the position of the nose limiting portion remains fixed relative to the first position and the second position, and when the subject is tested by the binocular optometry device, the common symmetry axis of the jaw limiting portion and the nose limiting portion is perpendicular to the line connecting the first eye and the second eye.

2. The binocular optometry device according to claim 1, characterized in that: Also includes: A three-dimensional moving component, wherein the first eye optometry component and the second eye optometry component are arranged on the base through the three-dimensional moving component, and the three-dimensional moving component is configured to enable the first eye optometry component and the second eye optometry component to move as a whole in three mutually orthogonal directions; A distance adjustment component, which is arranged on the three-dimensional moving component and is used to adjust the distance between the first eye optometry component and the second eye optometry component; Wherein, at least one of the first eye optometry component and the second eye optometry component is connected to the three-dimensional moving component through the distance adjustment component to achieve movement in the plane where the first eye optometry component and the second eye optometry component are located relative to the three-dimensional moving component.

3. The binocular optometry device according to claim 2, characterized in that: The first-eye optometry component includes a subjective visual function test module and a refraction objective measurement module. The subjective visual function test module is used to perform subjective optometry on the first eye. The refraction objective measurement module includes a light source and a wavefront sensor. When the first eye is tested through the first-eye optometry component, the light emitted by the light source reaches the first eye through the optical path structure of the first-eye optometry component, and after being reflected by the first eye, reaches the wavefront sensor through the optical path structure of the first-eye optometry component to obtain objective refraction data of the first eye; the second-eye optometry component includes a subjective visual function test module, which is used to perform subjective optometry on the second eye. The second-eye optometry component does not include a refraction objective measurement module; wherein, when the subject is tested through the binocular optometry device, the stroke of the three-dimensional moving component and the spacing adjustment component is configured to enable the first-eye optometry component to move to the position of the second eye, so as to obtain objective refraction data of the second eye through the first-eye optometry component.

4. The binocular optometry device according to claim 3, characterized in that: The first optometry component is connected to the three-dimensional moving component through the distance adjustment component, so that the first optometry component can move relative to the three-dimensional moving component in the plane where the first optometry component and the second optometry component are located.

5. The binocular optometry device according to claim 3, characterized in that: Also includes: A height adjustment component, which is arranged on the three-dimensional moving component and is used to adjust the height difference between the first eye optometry component and the second eye optometry component; Wherein, at least one of the first eye optometry component and the second eye optometry component is connected to the three-dimensional moving component through the height adjustment component to achieve movement relative to the three-dimensional moving component in a direction perpendicular to the plane where the first eye optometry component and the second eye optometry component are located.

6. The binocular optometry device according to claim 5, characterized in that: The second eye optometry component is connected to the three-dimensional moving component through the height adjustment component so that the second eye optometry component can move relative to the three-dimensional moving component in a direction perpendicular to the plane where the first eye optometry component and the second eye optometry component are located.

7. The binocular optometry device according to claim 3, characterized in that: The subjective visual function test module of the first eye optometry component includes a first sight mark display device, and the optical path structure of the first eye optometry component includes a first collimating objective lens, a first beam splitter, a second beam splitter, a refractive correction optical path, a first reflector, a first sight mark objective lens, and a first relay telescope. The light emitted by the light source can be collimated by the first collimating objective lens, and then reflected by the first beam splitter and the second beam splitter in sequence, and pass through the refractive correction optical path to reach the eyeball of the subject, and the light reflected by the fundus passes through the refractive correction optical path, the second beam splitter, and the first relay telescope in sequence to reach the wavefront sensor; the sight mark image displayed by the first sight mark display device passes through the first sight mark objective lens, is reflected by the first reflector, passes through the first beam splitter to reach the second beam splitter, and after being reflected by the second beam splitter, passes through the refractive correction optical path and is projected to the eyeball of the subject; The subjective visual function test module of the second eye optometry component includes a second sight mark display device, and the optical path structure of the second eye optometry component includes a second sight mark objective lens and a refractive correction optical path. The sight mark image displayed by the second sight mark display device passes through the second sight mark objective lens, and then passes through the refractive correction optical path and is projected onto the eyeball of the subject.

8. The binocular optometry device according to claim 7, characterized in that: The refractive correction optical paths in the first eye optometry component and the second eye optometry component include an astigmatism compensation component and a focusing optical component, wherein the astigmatism compensation component is used to correct astigmatism, and the focusing optical component is used to correct defocus; wherein, The astigmatism compensation component includes a cylindrical mirror pair, which is arranged at a pupil conjugate position of the eyeball; the focusing optical component includes a second relay telescope; or 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 of the subject.

9. The binocular optometry device according to claim 1, characterized in that: The first eye optometry assembly and the second eye optometry assembly are respectively provided with a first image acquisition device and a second image acquisition device, and the binocular optometry device also includes ruler glasses, and the ruler glasses include a frame and lenses, and the lenses are arranged in the frame, wherein the lenses are also provided with ruler grid lines, and during at least part of the process of performing optometry on the subject by the binocular optometry device, the subject wears the ruler glasses, and the first image acquisition device and the second image acquisition device are used to acquire images of the subject's pupils on the ruler grid lines.

10. The binocular optometry device according to claim 1, characterized in that: The jaw limiting portion is "U"-shaped, the jaw limiting portion is connected to the base through a bracket, and the nose limiting portion is connected to the jaw limiting portion through a support rod.

11. The binocular optometry device according to claim 10, characterized in that: The nose limiting portion includes a cross bar, two hangers and two contact members, the support rod is connected to the middle position of the cross bar, the two hangers are respectively arranged at both ends of the cross bar and are symmetrically arranged about the support rod, and 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 respectively contact the two sides of the bridge of the nose of the subject.

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