Eye biological measuring instrument

Abstract

The utility model discloses an eye biological measuring instrument. The eye biological measuring instrument comprises a shell, and a light source assembly, a first light path assembly, a second light path assembly, a lens assembly and an image acquisition assembly which are arranged on the shell, the light source assembly comprises a first optical fiber collimator and a second optical fiber collimator; the first light path assembly is used for transmitting light emitted by the first optical fiber collimator to human eyes; the second optical path assembly is used for reflecting the light emitted by the second optical fiber collimator back to the second optical fiber collimator after multiple times of conduction; the lens assembly is arranged at the front end of the shell; the image acquisition assembly is arranged corresponding to the lens assembly and is used for acquiring eye image information corresponding to the lens assembly; the image acquisition assembly is arranged in the middle of the shell, and the first light path assembly and the second light path assembly are located on the two opposite sides of the image acquisition assembly respectively. According to the utility model, the structural layout of the eye biological measuring instrument is more orderly, interference is not formed between the light path assemblies, and the assembly is more convenient, so that the assembly efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of eye detection equipment, in particular to an eye biometer. Background Art

[0002] The eye biometer can be used to measure the biological data of the human eye, which includes the corneal diopter K1 value, the axial length AL, the corneal thickness CCT, the anterior chamber depth AD, the lens thickness LT, and the vitreous cavity length VT. Then, the axial refractive error, the corneal refractive error, the refractive error caused by the anterior chamber depth, and the refractive error caused by the lens can be superimposed through an algorithm to obtain the refractive error of the human eye. However, the internal structure of the traditional eye biometer is complicated. While ensuring that the size of the eye biometer is small, the internal optical fiber is easy to be entangled or connected incorrectly, making the assembly inconvenient and resulting in a slow assembly speed. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is that the traditional eye biometer has a complex internal structure, which makes assembly inconvenient and leads to a slow assembly rate.

[0004] In order to solve the above technical problems, the utility model provides an eye biometer, comprising:

[0005] case;

[0006] A light source assembly is disposed in the housing and located at one side of the housing, the light source assembly comprising a first optical fiber collimator and a second optical fiber collimator;

[0007] A first optical path component is arranged corresponding to the light output end of the first optical fiber collimator and is used to transmit the light emitted by the first optical fiber collimator to the human eye;

[0008] A second optical path component is arranged corresponding to the light output end of the second optical fiber collimator, and the second optical path component is used to reflect the light emitted by the second optical fiber collimator back to the second optical fiber collimator after multiple transmissions;

[0009] A lens assembly is disposed in the housing and located at the front end of the housing. The light emitted from the first optical fiber collimator can be transmitted from the lens assembly to the human eye after being transmitted through the first optical path assembly.

[0010] An image acquisition component, arranged corresponding to the lens component, for acquiring eye image information corresponding to the lens component;

[0011] The image acquisition component is arranged in the middle of the shell, and the first optical path component and the second optical path component are respectively located on two opposite sides of the image acquisition component.

[0012] Optionally, the light source assembly further includes a light source and a fiber optic coupler connected to the light source, wherein two output ends of the fiber optic coupler are respectively connected to the first fiber optic collimator and the second fiber optic collimator, and the first fiber optic collimator and the second fiber optic collimator are arranged in parallel and at intervals.

[0013] Optionally, the first optical path component includes:

[0014] a light guide, one end of which is opposite to the first optical fiber collimator;

[0015] The light splitting structure is opposite to the other end of the light guide, and is used to reflect the light transmitted by the light guide toward the lens assembly to illuminate the human eye, and can transmit the light reflected back by the human eye to the light guide and then return to the first optical fiber collimator.

[0016] Optionally, the light splitting structure includes a first lens and a second lens arranged in parallel and spaced apart, the reflective surface of the first lens is arranged to extend obliquely toward the light guide member, and the reflective surface of the second lens is opposite to the first lens and is arranged to extend obliquely toward the lens assembly.

[0017] Optionally, the second optical path component includes:

[0018] A first light reflecting structure is disposed close to the second optical fiber collimator and has a first light passing gap, wherein the first light passing gap is opposite to the light emitting end of the second optical fiber collimator;

[0019] A second light-reflecting structure is located in front of the first light-reflecting structure and has a second light-passing gap arranged opposite to the first light-passing gap;

[0020] A third reflective structure, disposed in front of the second reflective structure, and comprising a first prism rotatably disposed in the housing;

[0021] The light emitted from the second optical fiber collimator can pass through the first light passing gap and the second light passing gap to illuminate the first prism, and then be reflected by the first prism to the second reflective structure and the first reflective structure, and then reflected back to the first prism to reflect to the second optical fiber collimator.

[0022] Optionally, the first light reflecting structure includes:

[0023] A first seat body is movably disposed in the shell, and a first through hole is provided on the first seat body and penetrates along the front-rear direction of the shell;

[0024] The first mirror body is disposed on the first base body and partially covers the first through hole. The area of ​​the first through hole not covered by the first mirror body forms the first light-transmitting gap.

[0025] Optionally, the second light reflecting structure comprises:

[0026] A second seat body is disposed in the shell and is spaced apart from the first seat body. The second seat body is provided with a second through hole extending along the front-rear direction of the shell;

[0027] The second mirror body is disposed on the second base body and is located in the second through hole. The area of ​​the second through hole not accommodated by the second mirror body forms the second light-transmitting gap.

[0028] Optionally, a cross section of the second light passing gap is smaller than a cross section of the first light passing gap.

[0029] Optionally, the third light reflecting structure includes:

[0030] A driver, disposed in the housing;

[0031] A third seat body is connected to the driver, and the driver is used to drive the third seat body to rotate in a horizontal direction;

[0032] The third mirror body is arranged on the third base body and extends in the horizontal direction. The third mirror body has at least two reflective surfaces to reflect the light to the second mirror body and reflect the light reflected from the first mirror body to the second optical fiber collimator.

[0033] Optionally, the first mirror body is configured as a total reflection mirror; and / or, the second mirror body is configured as a lens; and / or, the third mirror body is configured as a prism; and / or, the third mirror body is configured in a square shape.

[0034] The technical solution provided by the utility model has the following advantages:

[0035] The eye biometer provided by the utility model comprises a housing, a light source component, a first optical path component, a second optical path component, a lens component and an image acquisition component, wherein the first optical path component can conduct the light emitted by the first optical fiber collimator of the light source component, so that the light can be transmitted to the human eye, and can be reflected back to the first optical fiber collimator through the human eye, so as to obtain the sample arm light; the second optical path component can reflect the light emitted by the second optical fiber collimator back to the second optical fiber collimator after multiple transmissions, so as to obtain the sample arm light, and then obtain the human eye biological data through the sample arm light and the sample arm light, and know the human eye degree; and the lens component and the image acquisition component can better obtain the eye image information, and the eye image information can be used for auxiliary detection; and the image acquisition component is arranged in the middle of the housing, and the first optical path component and the second optical path component are respectively located on two opposite sides of the image acquisition component, so that the structure of the eye biometer is more organized, each optical path component will not form interference, and the assembly is more convenient, so that the assembly efficiency can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of an embodiment of an eye biometer provided by the utility model;

[0038] Figure 2 for Figure 1 A schematic diagram of the structure of the eye biometer from another perspective;

[0039] Figure 3 for Figure 1 A structural schematic diagram of another viewing angle of the eye biometer described in the embodiment;

[0040] Figure 4 for Figure 1 A schematic diagram of an exploded structure of the eye biometer described in FIG.

[0041] Description of reference numerals:

[0042] 100-eye biometer; 1-housing; 11-boss; 12-mounting groove; 13-matching hole; 2-light source assembly; 21-light source; 22-fiber coupler; 23-first fiber collimator; 24-second fiber collimator; 3-first optical path assembly; 31-light guide; 311-light guide column; 312-light guide pressure plate; 313-rubber member; 32-beam splitting structure; 321-first lens; 322-second lens; 4-second optical path assembly; 41-first reflective structure; 411-first seat; 4111-first light passing gap; 412-first mirror body; 42-second reflective structure; 421-second seat; 4211-second light passing gap; 422-second mirror body; 43-third reflective structure; 431-driver; 432-third seat; 433-third mirror body; 5-lens assembly; 6-image acquisition assembly. DETAILED DESCRIPTION

[0043] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0045] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0046] The utility model provides an eye biometer 100, see Figures 1 to 3The eye biometer 100 includes a housing 1, a light source assembly 2, a first optical path assembly 3, a second optical path assembly 4, a lens assembly 5 and an image acquisition assembly 6; wherein the light source assembly 2 is arranged in the housing 1 and is located on one side of the housing 1, and the light source assembly 2 includes a first optical fiber collimator 23 and a second optical fiber collimator 24; the first optical path assembly 3 is arranged corresponding to the light output end of the first optical fiber collimator 23, and is used to transmit the light emitted by the first optical fiber collimator 23 to the human eye; the second optical path assembly 4 is arranged corresponding to the light output end of the second optical fiber collimator 24, and the second optical path assembly 4 is used to The light emitted by the second fiber optic collimator 24 is reflected back to the second fiber optic collimator 24 after being transmitted multiple times; the lens assembly 5 is arranged in the shell 1 and is located at the front end of the shell 1. The light emitted from the first fiber optic collimator 23 can be transmitted from the lens assembly 5 to the human eye after being transmitted by the first optical path assembly 3; the image acquisition assembly 6 is arranged corresponding to the lens assembly 5, and is used to obtain eye image information corresponding to the lens assembly 5; the image acquisition assembly 6 is arranged in the middle of the shell 1, and the first optical path assembly 3 and the second optical path assembly 4 are respectively located on opposite sides of the image acquisition assembly 6.

[0047] The utility model can transmit the light emitted by the first optical fiber collimator 23 of the light source assembly 2 through the first optical path assembly 3, so that the light can be transmitted to the human eye, and can be reflected back to the first optical fiber collimator 23 through the human eye, so as to obtain the sample arm light; the light emitted by the second optical fiber collimator 24 can be reflected back to the second optical fiber collimator 24 after multiple transmissions through the second optical path assembly 4, so as to obtain the sample arm light, and then the human eye biological data can be obtained through the sample arm light and the sample arm light to know the human eye degree; and the eye image information can be better obtained through the lens assembly 5 and the image acquisition assembly 6, and auxiliary detection can be performed through the eye image information; and the image acquisition assembly 6 is arranged in the middle of the housing 1, and the first optical path assembly 3 and the second optical path assembly 4 are respectively located on the opposite sides of the image acquisition assembly 6, so that the structural layout of the eye biometer 100 is more organized, each optical path assembly will not form interference, and the assembly is more convenient, thereby effectively improving the assembly efficiency.

[0048] The light source assembly 2 further comprises a light source 21 and a fiber coupler 22 connected to the light source 21. The light emitted by the light source 21 is transmitted to the fiber coupler 22 via an optical fiber. The two output ends of the fiber coupler 22 are respectively connected to the first fiber collimator 23 and the second fiber collimator 24, so that the output light is converted into parallel light via the first fiber collimator 23 and the second fiber collimator 24. Moreover, the first fiber collimator 23 and the second fiber collimator 24 are arranged in parallel and spaced apart, so that the optical fiber connected to the first fiber collimator 23 and the fiber coupler 22, and the optical fiber connected to the second fiber collimator 24 and the fiber coupler 22 are not easily entangled, and the connection and installation during assembly are also more convenient.

[0049] The first optical path component 3 is used to emit detection light, so that the sample arm light can be obtained after being reflected back from the human eye. Figure 2 and Figure 3 As shown, the first optical path component 3 includes a light guide 31 and a light splitting structure 32, one end of the light guide 31 is opposite to the first optical fiber collimator 23; the light splitting structure 32 is opposite to the other end of the light guide 31, and is used to reflect the light transmitted from the light guide 31 to the lens component 5 to illuminate the human eye, and can transmit the light reflected back from the human eye to the light guide 31 and then return to the first optical fiber collimator 23, so as to receive the sample arm light.

[0050] In the present invention, coherent light can be transmitted through the optical fiber coupler 22 to be transmitted to the first optical fiber collimator 23. After the light is collimated by the first optical fiber collimator 23, it is emitted to the light guide 31. The light path is increased by the light guide 31, so that the distance between the optical fiber coupler 22 and the lens assembly 5 can be shortened, so as to reduce the volume of the eye biometer 100, thereby reducing the overall volume of the eye biometer 100.

[0051] It should be noted that when the eye biometer 100 is working normally, the side of the lens assembly 5 facing the subject is the front side. Accordingly, the lens assembly 5 is located at the frontmost side of the housing 1 to face the eyes of the subject. The description of the orientation in the present utility model is based on this unless otherwise specified.

[0052] Among them, combined Figure 1 and Figure 2As shown, the first optical fiber collimator 23 is arranged at the rear side of the housing 1, and the light guide 31 is located in front of the first optical fiber collimator 23. The light guide 31 includes a light guide column 311, and the light guide column 311 is extended along the front-to-back direction of the housing 1. The front end of the light guide column 311 is arranged close to the light splitting structure 32. The light is more focused through the light guide column 311, and the optical path can be increased. Compared with the traditional eye biometer 100, there is no need to set too many lenses, so that the installation is more convenient and the volume is smaller.

[0053] Furthermore, combined with Figure 3 and Figure 4 As shown, the light guide member 31 also includes a light guide pressure plate 312 and a rubber member 313 located between the light guide pressure plate 312 and the light guide column 311, the light guide pressure plate 312 is connected to the shell 1, and the light guide pressure plate 312 and the shell 1 are clamped together on the peripheral side of the light guide column 311, thereby fixing the light guide column 311 on the shell 1 for easy installation.

[0054] Furthermore, if Figure 3 As shown in the figure, a boss 11 is protruded from the bottom of the shell 1, and the boss 11 is used to fix the light guide column 311 at a certain height, so that the light guide column 311 can be better opposite to the light outlet hole of the first optical fiber collimator 23, so that light can be better transmitted into the light guide column 311. Among them, a mounting groove 12 is formed on the boss 11, the light guide column 311 is arranged in the mounting groove 12 and fits with a side wall of the mounting groove 12, the light guide pressure plate 312 is arranged in the mounting groove 12, and has a first crimping wall and a second crimping wall connected to each other, the first crimping wall is clamped on the other side of the light guide column 311 and connected to the boss 11, the second crimping wall is crimped on the top of the light guide column 311, the light guide column 311 is fixed by the mounting groove 12 and the light guide pressure plate 312, and the light of the light guide column 311 can be sealed by the mounting groove 12 to avoid light leakage and affect other optical modules.

[0055] Specifically, the light guide column 311 is substantially in the shape of a rectangular parallelepiped, and the length direction of the light guide column 311 extends along the front-rear direction of the housing 1 to better guide the light to the light splitting structure 32 and thus to the human eye.

[0056] The light splitting structure 32 is used to change the transmission direction of the light so that the light can be better transmitted to the eyes of the person being tested. Figure 2 and Figure 3As shown, the light splitting structure 32 includes a first lens 321 and a second lens 322, wherein the first lens 321 is opposite to the front end of the light guide column 311, and the reflective surface of the first lens 321 is arranged at an angle to the light guide column 311. Preferably, the angle between the first lens 321 and the center line of the light guide column 311 is 45°, so that the light transmitted in the direction from back to front forms a light transmitted in the direction from right to left after being reflected by the first lens 321, thereby irradiating the second lens 322 located on the left side of the first lens 321. The second lens 322 is arranged parallel to the first lens 321 and spaced apart, and the reflective surface of the second lens 322 is arranged at an angle to the lens assembly 5; wherein the reflective surface of the first lens 321 and the reflective surface of the second lens 322 are arranged opposite to each other. Preferably, the angle between the second lens 322 and the central axis of the lens assembly 5 is 45°, and the light reflected from the first lens 321 is converted to be transmitted in the direction from back to front after being reflected by the second lens 322, and then transmitted into the lens assembly 5 to illuminate the eyes of the person being tested. The light can reach the eyes of the person being tested after being reflected twice, the structure is simple, and the light guide column 311, the first lens 321 and the second lens 322 can be arranged more compactly, so that less space is occupied.

[0057] In this embodiment, combined with Figures 1 to 3 As shown, the fiber coupler 22 includes a light source 21 and a fiber coupler 22 corresponding to the light source 21. The light source 21 is extended along the front-to-back direction of the shell 1. The fiber coupler 22 is connected to the first fiber collimator 23 through an optical fiber guide wire. A coherent light source 21 can be formed through the light source 21, and can be transmitted to the first fiber collimator 23 through the fiber coupler 22.

[0058] The light source 21 is arranged in parallel with the light guide column 311, and the first fiber collimator 23 is arranged at a relative interval with the rear end of the light guide column 311. A support platform is also arranged on the right side of the mounting groove 12, and the support platform is protruding from the bottom of the housing 1. The mounting module is installed on the support platform and is arranged in parallel with the light guide column 311. The mounting module and the light guide column 311 are isolated by the side wall of the mounting groove 12, so that there will be no crosstalk. The first fiber collimator 23 is arranged close to the rear end of the light source 21 and opposite to the light guide column 311, so that the first fiber collimator 23 can be more conveniently connected to the fiber coupler 22, and is closer to the light guide column 311, so that the fiber coupler 22, the light guide module and the first fiber collimator 23 are arranged more compactly, thereby occupying less space.

[0059] As for the first optical fiber collimator 23, the first optical fiber collimator 23 includes a support seat and a first collimator arranged on the support seat. The support seat is movably arranged on the shell 1 and has a movable stroke approaching and moving away from the light guide 31. The movement of the support seat can drive the first collimator to move together, so that the distance between the first collimator and the light guide column 311 can be adjusted, so that the light can better enter different types of light guide columns 311, thereby ensuring better light conductivity.

[0060] Preferably, combined Figure 2 and Figure 4 As shown, one of the support seat and the housing 1 is provided with a long hole, and the other is provided with a matching hole 13 matching with the long hole; the eye biometer 100 also includes a connecting piece, which is inserted into the long hole and the matching hole 13 to fix the support seat at different positions of the housing 1. The connecting piece can be set as a screw or a bolt, etc., which is inserted into the long hole and the matching hole 13 by the screw, so as to fix the support seat on the housing 1. When the support seat is moved so that the screw is inserted into different positions of the long hole, the support seat can be fixed at different positions of the housing 1, so that the distance between the first light collimator and the light guide column 311 can be adjusted, and the structure is simple, the cost is low, and the adjustment is convenient.

[0061] Moreover, the matching holes 13 are arranged in plurality along the front-to-back direction of the shell 1 and in plurality along the left-to-right direction of the shell 1, so that the adjustment range of the first optical fiber collimator 23 in the front-to-back direction of the shell 1 is larger, thereby making the adjustment more flexible.

[0062] The structure of the second optical fiber collimator 24 is similar to that of the first optical fiber collimator 23 , and will not be described again herein.

[0063] For the second optical path component 4, combined with Figure 2 and Figure 3As shown, the second optical path component 4 includes a first reflective structure 41, a second reflective structure 42 and a third reflective structure 43, wherein the first reflective structure 41 is arranged close to the second optical fiber collimator 24 and has a first light passing gap 4111, and the first light passing gap 4111 is opposite to the light output end of the second optical fiber collimator 24; the second reflective structure 42 is located in front of the first reflective structure 41 and has a second light passing gap 4211 arranged opposite to the first light passing gap 4111; the third reflective structure 43 is arranged in front of the second reflective structure 42 and includes a first prism rotatably arranged in the housing 1; The light emitted by 24 can pass through the first light passing gap 4111 and the second light passing gap 4211 to irradiate the first prism, and is reflected by the first prism to the second reflective structure 42 and the first reflective structure 41, and then reflected back to the first prism to reflect to the second optical fiber collimator 24, so that the optical fiber coupler 22 can receive the reference arm light reflected from the second optical fiber collimator 24, and calculate the corneal refractive power K1 value, the axial length AL, the corneal thickness CCT, the anterior chamber depth AD, the lens thickness LT, and the vitreous cavity length VT, etc., with the sample arm light obtained by the first optical path component 3 and the reference arm light obtained by the second optical path component 4.

[0064] Furthermore, if Figure 3 As shown in , the first reflective structure 41 includes a first seat body 411 and a first mirror body 412. The first seat body 411 is movably disposed in the housing 1. The first seat body 411 is provided with a first through hole extending along the front-to-back direction of the housing 1. The first mirror body 412 is disposed on the first seat body 411 and partially covers the first through hole. The area of ​​the first through hole not covered by the first mirror body 412 forms the first light-passing gap 4111. The first light-passing gap 4111 is disposed opposite to the light-emitting hole of the second optical fiber collimator 24 along the front-to-back direction, so that the parallel light emitted from the second optical fiber collimator 24 can pass through the first light-passing gap 4111.

[0065] The first seat 411 is provided with a first positioning hole, and the housing 1 is provided with a plurality of second positioning holes. The first seat 411 is arranged opposite to different second positioning holes, so as to connect and fix the first seat 411 and the housing 1, so as to fix the first reflective structure 41 at different positions in the housing 1. The plurality of second positioning holes are arranged at intervals along the front-to-back direction of the housing 1, so as to adjust the distance between the first reflective structure 41 and the third reflective structure 43, and further adjust the distance between the first mirror body 412 and the third mirror body 433 of the third reflective structure 43, so as to change the angle of light reflection.

[0066] Similarly, the second reflective structure 42 includes a second seat body 421 and a second mirror body 422, the second seat body 421 is arranged in the shell body 1 and is arranged at a relative interval with the first seat body 411, and the second seat body 421 is provided with a second through hole extending along the front-to-back direction of the shell body 1; the second mirror body 422 is arranged on the second seat body 421 and is located in the second through hole, and the area of ​​the second through hole not accommodated by the second mirror body 422 forms the second light passing gap 4211, wherein the second light passing gap 4211 is arranged opposite to the first light passing gap 4111, and the parallel light emitted from the second optical fiber collimator 24 passes through the first light passing gap 4111 and then passes through the second light passing gap 4211 to irradiate the third reflective structure 43.

[0067] The second seat 421 is provided with a third positioning hole, and the housing 1 is provided with a plurality of fourth positioning holes. The second seat 421 is connected and fixed to the housing 1 by placing the second seat 421 opposite to different fourth positioning holes, so that the second reflective structure 42 is fixed at different positions in the housing 1. The plurality of fourth positioning holes are arranged at intervals along the front-to-back direction of the housing 1 to adjust the distance between the second reflective structure 42 and the third reflective structure 43, and further adjust the distance between the second mirror body 422 and the third mirror body 433 of the third reflective structure 43, so as to change the angle of light reflection.

[0068] Moreover, a cross section of the second light-passing gap 4211 is smaller than a cross section of the first light-passing gap 4111 , so that the light passing through the second light-passing gap 4211 can be irradiated onto the third light-reflecting structure 43 in a more concentrated manner.

[0069] Furthermore, combined with Figure 2 and Figure 3As shown, the third reflective structure 43 includes a driver 431, a third base 432 and a third mirror 433. The driver 431 is arranged in the housing 1; the third base 432 is connected to the driver 431, and the driver 431 is used to drive the third base 432 to rotate in the horizontal direction; the third mirror 433 is arranged on the third base 432 and extends in the horizontal direction. The third mirror 433 has at least two reflective surfaces to reflect light onto the second mirror 422, and can reflect the light reflected from the first mirror 412 to the second optical fiber collimator 24. Specifically, the driver 431 can be set as a driving motor, and the driving motor drives the third base 432 to rotate, thereby driving the third mirror 433 to rotate together. The parallel light emitted from the second optical fiber collimator 24 first passes through the first light passing gap 4111 and then passes through the second light passing gap 4211 to illuminate the third mirror body 433, is reflected by the third mirror body 433 to the second mirror body 422, and passes through the second mirror body 422 to illuminate the first mirror body 412. After being reflected by the first mirror body 412, the light passes through the second mirror body 422 to illuminate the third mirror body 433. After the second reflection by the third mirror body 433, the light can sequentially pass through the second light passing gap 4211 and the first light passing gap 4111 to return to the second optical fiber collimation, and is transmitted to the optical fiber coupler 22 through the second optical fiber collimator 24 to obtain the reference arm light.

[0070] Preferably, the first mirror body 412 is configured as a total reflection mirror, so that the light passing through the second mirror body 422 can be completely reflected back by the first mirror body 412. And / or, the second mirror body 422 is configured as a lens, and the parallel light is irradiated onto the first mirror body 412 after passing through the second mirror body 422. And / or, the third mirror body 433 is configured as a prism; and / or, the third mirror body 433 is configured in a square shape, wherein the shape of the third mirror body 433 can also be other polygons, such as a pentagon, a hexagon, etc.

[0071] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. An eye biometer, characterized in that: include: case; A light source assembly is disposed in the housing and located at one side of the housing, the light source assembly comprising a first optical fiber collimator and a second optical fiber collimator; A first optical path component is arranged corresponding to the light output end of the first optical fiber collimator and is used to transmit the light emitted by the first optical fiber collimator to the human eye; A second optical path component is arranged corresponding to the light output end of the second optical fiber collimator, and the second optical path component is used to reflect the light emitted by the second optical fiber collimator back to the second optical fiber collimator after multiple transmissions; A lens assembly is disposed in the housing and located at the front end of the housing. The light emitted from the first optical fiber collimator can be transmitted from the lens assembly to the human eye after being transmitted through the first optical path assembly. An image acquisition component, arranged corresponding to the lens component, for acquiring eye image information corresponding to the lens component; The image acquisition component is arranged in the middle of the shell, and the first optical path component and the second optical path component are respectively located on two opposite sides of the image acquisition component.

2. The eye biometer according to claim 1, wherein: The light source assembly also includes a light source and a fiber coupler connected to the light source, wherein two output ends of the fiber coupler are respectively connected to the first fiber collimator and the second fiber collimator, and the first fiber collimator and the second fiber collimator are arranged in parallel and at intervals.

3. The eye biometer according to claim 1, wherein: The first optical path component comprises: a light guide, one end of which is opposite to the first optical fiber collimator; The light splitting structure is opposite to the other end of the light guide, and is used to reflect the light transmitted by the light guide toward the lens assembly to illuminate the human eye, and can transmit the light reflected back by the human eye to the light guide and then return to the first optical fiber collimator.

4. The eye biometer according to claim 3, characterized in that: The light splitting structure includes a first lens and a second lens arranged in parallel and spaced apart. The reflective surface of the first lens is inclined and extended toward the light guide, and the reflective surface of the second lens is opposite to the first lens and is inclined and extended toward the lens assembly.

5. The eye biometer according to claim 1, wherein: The second optical path component comprises: A first light reflecting structure is disposed close to the second optical fiber collimator and has a first light passing gap, wherein the first light passing gap is opposite to the light emitting end of the second optical fiber collimator; A second light-reflecting structure is located in front of the first light-reflecting structure and has a second light-passing gap arranged opposite to the first light-passing gap; A third reflective structure, disposed in front of the second reflective structure, and comprising a first prism rotatably disposed in the housing; The light emitted from the second optical fiber collimator can pass through the first light passing gap and the second light passing gap to illuminate the first prism, and then be reflected by the first prism to the second reflective structure and the first reflective structure, and then reflected back to the first prism to reflect to the second optical fiber collimator.

6. The eye biometer according to claim 5, wherein: The first light reflecting structure comprises: A first seat body is movably disposed in the shell, and a first through hole is provided on the first seat body and penetrates along the front-rear direction of the shell; The first mirror body is disposed on the first base body and partially covers the first through hole. The area of ​​the first through hole not covered by the first mirror body forms the first light-transmitting gap.

7. The eye biometer according to claim 6, wherein: The second light reflecting structure comprises: A second seat body is disposed in the shell and is spaced apart from the first seat body. The second seat body is provided with a second through hole extending along the front-rear direction of the shell; The second mirror body is disposed on the second base body and is located in the second through hole. The area of ​​the second through hole not accommodated by the second mirror body forms the second light-transmitting gap.

8. The eye biometer according to claim 7, wherein: A cross section of the second light-passing gap is smaller than a cross section of the first light-passing gap.

9. The eye biometer according to claim 7, wherein: The third reflective structure comprises: A driver, disposed in the housing; A third seat body is connected to the driver, and the driver is used to drive the third seat body to rotate in a horizontal direction; The third mirror body is arranged on the third base body and extends in the horizontal direction. The third mirror body has at least two reflective surfaces to reflect light onto the second mirror body and reflect the light reflected from the first mirror body to the second optical fiber collimator.

10. The eye biometer according to claim 9, wherein: The first mirror body is configured as a total reflection mirror; and / or, the second mirror body is configured as a lens; and / or, the third mirror body is configured as a prism; and / or, the third mirror body is configured in a square shape.

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