An automatic human eye tracking system for a computer optometry instrument

Abstract

The present application belongs to the technical field of computer optometry instrument, and particularly relates to a computer optometry instrument human eye automatic tracking system; the computer optometry instrument human eye automatic tracking system comprises a control console, an arc-shaped track, a base, a moving table, a main body, a support frame and a rotary tracking unit are arranged on the control console; the rotary tracking unit is used to control the main body to automatically track the head movement when the head of a person to be detected rotates left and right, so that the detection device is directed to the pupil position, and the adjustment of the staff is further matched, so that the work load of the staff is reduced, and the detection result accuracy is improved; the present application does not fix the head of the person to be detected, thereby reducing the nervousness of the person to be detected; especially for children who are timid, if the head is fixed, the nervousness of the children will be further increased, and even crying will be caused, so that the detection process cannot be carried out.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of computer optometry instrument, in particular to a computer optometry instrument human eye automatic tracking system. BACKGROUND

[0002] The computer optometry instrument is a visual acuity optometry instrument; the computer optometry belongs to the objective optometry method, the principle thereof is basically same as that of the retinal shadow detection method, the infrared light source and the automatic fogging device are adopted to achieve the purpose of relaxing the eyeball accommodation, the photoelectric technology and the automatic control technology are adopted to check the diopter; the subjective optometry method and the objective optometry method can accurately measure the diopter number and the axis direction of the patient. The two methods need rich optometry experience, and it needs a long time to master the shadow detection technology, while the computer optometry technology is easier to learn and master. The computer optometry instrument optometry can be used for diagnostic optometry for soft contact lens fitting, without needing mydriasis and being able to quickly measure the diopter number. The computer optometry instrument optometry result is all automatically printed, without needing conversion, and a patient can be measured in several seconds to several minutes, and the diopter number of ametropia can be quickly measured, to provide more accurate diopter number and pupil distance for lens correction.

[0003] In the process of using the computer optometry instrument, the chin of the measured person needs to be placed on the chin support, and the measured person is guided to look straight at the cursor in the optometry instrument; however, in the process of detection, the accuracy of the computer optometry instrument is affected by many factors, for example, the left and right rotation and skew of the head of the measured person, the moving around, and the insufficient relaxation accommodation, and any inclination of the head position and the eye position will inevitably affect the accuracy of the diopter checking result, and even the difference of the repeated checking number is large, especially the children patients, the children have poor control ability or are not concentrated, and the head cannot be well controlled in the process of optometry; the small range of left and right rotation and skew of the head will cause large error of the computer optometry instrument test, and affect the measurement precision.

[0004] In view of this, the present application provides a computer optometry instrument human eye automatic tracking system to solve the above technical problems. SUMMARY

[0005] In order to make up for the deficiencies of the prior art, solve the problem that the children have poor control ability or are not concentrated, and the head cannot be well controlled in the process of optometry; the small range of left and right rotation and skew of the head causes large error of the computer optometry instrument test, the present application provides a computer optometry instrument human eye automatic tracking system.

[0006] The technical scheme adopted by the present application to solve the technical problems is that: a computer optometry instrument human eye automatic tracking system, comprising:

[0007] A control console is arranged on the control console, and an arc-shaped track is arranged on the control console.

[0008] A base movably mounted in the arc-shaped track;

[0009] A mobile station provided on the base, which can move forward, backward, left and right on the base;

[0010] A main body provided above the mobile station, a lifting device provided between the main body and the mobile station, which can adjust the height of the main body; the two sides of the main body are respectively fixedly provided with a display device and a detection device; the top of the control console is provided with a joystick and a locking device;

[0011] A support frame fixedly provided on the top of the control console, a lower jaw support provided at the cavity of the support frame;

[0012] A rotation tracking unit, which controls the movement of the base in the arc-shaped track, and then controls the automatic tracking of the head movement of the main body.

[0013] Preferably, the rotation tracking unit comprises:

[0014] A first rotating shaft, which is fixedly connected below the lower jaw support and extends to the inside of the control console;

[0015] An angle sensor, which is fixedly connected to one end of the first rotating shaft inside the control console;

[0016] A first sleeve shaft, which is provided with a through hole near one end of the first rotating shaft, and a first gear is fixedly provided on the outside of the first sleeve shaft corresponding to the position of the through hole, and the first rotating shaft penetrates through the through hole; the control console is provided with a fan-shaped cavity in horizontal section, and the fan-shaped cavity is in communication with the arc-shaped track; one end of the first sleeve shaft away from the first rotating shaft penetrates through the cavity inside the control console and the arc-shaped track; and the part of the first sleeve shaft in the arc-shaped track is fixedly connected with the base;

[0017] A controller, which is fixedly provided inside the control console;

[0018] A stepping motor, which is fixedly connected inside the control console;

[0019] A second gear, which is fixedly connected to the output end of the stepping motor, and the second gear is engaged with the first gear.

[0020] Preferably, the pitch circle diameters and the number of teeth of the first gear and the second gear are consistent.

[0021] Preferably, a rotating sleeve is sleeved on the end of the first sleeve shaft away from the first rotating shaft.

[0022] Preferably, the outer ring of the rotating sleeve is fixedly provided with a clamping tooth, and the rotating sleeve is fixedly provided with an arc-shaped rack at the position in contact with the edge of the arc-shaped track.

[0023] Preferably, a torsional spring is fixedly connected between the first rotating shaft and the angle sensor.

[0024] Preferably, a plug is slidingly arranged in the top wall of the control console, and a plug slot is formed in the position of the top wall of the control console corresponding to the first rotating shaft.

[0025] Preferably, two clamping blocks are slidingly connected to the top of the chin support, and a first spring is fixedly connected between the side wall of the chin support and the side of the two clamping blocks away from each other.

[0026] Preferably, a plurality of elastic rollers are rotatably connected to the opposite sides of the two clamping blocks.

[0027] Preferably, a detection button is fixedly arranged at the top of the chin support between the two clamping blocks.

[0028] The beneficial effects of the present application are as follows:

[0029] 1. The computer optometry instrument human eye automatic tracking system disclosed by the present application, when the chin of the measured person is placed on the chin support, after the position of the main body is adjusted, if the head of the measured person rotates left and right around the chin as the fulcrum, the first rotating shaft is driven to rotate, since the angle sensor is fixedly connected to the end of the first rotating shaft inside the control console, the angle sensor can convert the angle signal of rotation into an electric signal, which is then transmitted to the controller, the controller receives the signal, processes it, converts the electric signal into an electric pulse signal, and transmits it to the stepping motor, the controller controls the stepping motor to rotate in the opposite direction by the same angle, cooperates with the meshing of the first gear and the second gear, and then makes the first sleeve shaft rotate in the same angle as the head rotation direction.

[0030] 2. The computer optometry instrument human eye automatic tracking system disclosed by the present application, by setting the division circle diameter and the number of teeth of the first gear and the second gear to be consistent, this setting makes the first gear and the second gear rotate in meshing, the consistent division circle diameter and the number of teeth make the rotation angles of the first gear and the second gear consistent when rotating, thereby improving the control precision and making the device more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0031] The present application will be further described below with reference to the drawings.

[0032] Figure 1 is a perspective view of the present application;

[0033] Figure 2 is a side view of the present application;

[0034] Figure 3 is a top view of the present application;

[0035] Figure 4 is a top view of the console in a cutaway view;

[0036] Figure 5 is Figure 4 is a partial enlarged view of A of

[0037] Figure 6 is a partial cutaway view of the console;

[0038] Figure 7 is a cutaway view of the clamp block;

[0039] In the figure: console 1, arc-shaped track 11, arc-shaped rack 12, latch 13, base 2, moving platform 3, main body 4, lifting device 41, display device 42, detection device 43, joystick 44, locking device 45, support frame 5, lower jaw holder 51, clamp block 52, first spring 53, elastic roller 54, detection button 55, rotary tracking unit 6, first rotating shaft 61, insertion slot 611, angle sensor 62, first sleeve shaft 63, through hole 631, first gear 632, rotating sleeve 633, controller 64, stepping motor 65, second gear 66, torsional spring 67. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0041] As Figures 1 to 7 shown, the computer optometry instrument human eye automatic tracking system of the present application comprises:

[0042] Console 1, wherein the console 1 is provided with an arc-shaped track 11;

[0043] Base 2, wherein the base 2 is movably installed in the arc-shaped track 11;

[0044] Moving platform 3, wherein the moving platform 3 is arranged on the base 2, and the moving platform 3 can move forward, backward, leftward and rightward on the base 2;

[0045] Main body 4, wherein the main body 4 is arranged above the moving platform 3, a lifting device 41 is arranged between the main body 4 and the moving platform 3, the lifting device 41 can adjust the height of the main body 4, display devices 42 and detection devices 43 are respectively fixedly arranged on both sides of the main body 4, a joystick 44 and a locking device 45 are arranged on the top of the console 1;

[0046] Support frame 5, wherein the support frame 5 is fixedly arranged on the top of the console 1, a lower jaw holder 51 is arranged in the cavity of the support frame 5,

[0047] The rotation tracking unit 6 controls the movement of the base 2 within the arc track 11, thereby controlling the main body 4 to automatically track the head movement.

[0048] During operation, the computerized refractometer requires the subject's chin to be placed on the chin rest 51, and the subject to be guided to look directly at the cursor in the refractometer. However, the accuracy of the computerized refractometer is affected by many factors during the test, such as the subject's head turning left and right, moving around, or insufficient relaxation and adjustment. Any tilting of the head or eyes will inevitably affect the accuracy of the refractive error test results, and even repeated tests may show significant differences in diopter. This is especially true for children, whose control abilities are weak or who have difficulty concentrating, making it difficult for them to keep their heads still during the refraction test. Even small left and right tilts of the head can lead to larger errors in the computerized refractometer test, affecting measurement accuracy. In this application, the subject is guided to place their chin on the chin rest 51, and the joystick 44 is operated so that the moving stage 3 can move the main body 4 back and forth and left and right on the base 2, and the lifting device 41 can raise and lower the main body 4. The back and forth movement of the main body 4 is used to adjust the focus, the left and right movement is used to adjust the position of the left and right eyes, and the up and down movement is used to help the testing device 43 face the person. The pupil of the eye; the locking device 45 is used to lock the movement of the main body 4 to prevent the main body 4 from moving freely and causing damage during the transport of the computer optometry instrument (the control lever 44, locking device 45, moving platform 3 and lifting device 41 are all consistent with the structure and principle of the existing computer optometry instrument); of course, this application is consistent with the existing computer optometry instrument, and also has manual mode and automatic mode. Switching to automatic mode can automatically control the movement of the main body 4 to complete the acquisition of human eye data; when the position of the main body 4 is adjusted, human eye data is acquired. If the subject's head rotates slightly left or right at this time, especially for children who are hyperactive, have poor control ability and lack concentration, the head will rotate slightly left or right. At this time, the detection device 43 is no longer facing the pupil position, which will inevitably lead to inaccurate measurement results; therefore, a rotation tracking unit 6 is set. When the subject's head rotates left or right, the rotation tracking unit 6 is used to control the main body 4 to automatically track the head movement, so that the detection device 43 is facing the pupil position; with the adjustment of the staff, the accuracy of the test results is improved.

[0049] Because insufficient relaxation and adjustment by the test subject can also lead to inaccurate measurement results, this application does not use the method of fixing the test subject's head still to reduce the test subject's tension; especially for children who are timid, fixing their head will increase their tension and may even cause them to cry, making the testing process impossible.

[0050] In one specific embodiment of the present invention, the rotation tracking unit 6 includes:

[0051] The first rotating shaft 61 is fixedly connected to the lower jaw support 51 and extends into the console 1;

[0052] The angle sensor 62 is fixedly connected to the end of the first rotating shaft 61 inside the console 1;

[0053] The first sleeve shaft 63 is provided with a through hole 631 at one end close to the first rotating shaft 61, and a first gear 632 is fixedly arranged outside the first sleeve shaft 63 corresponding to the position of the through hole 631, and the first rotating shaft 61 penetrates through the through hole 631; The console 1 is provided with a fan-shaped cavity, and the fan-shaped cavity is in communication with the arc-shaped track 11; The end of the first sleeve shaft 63 away from the first rotating shaft 61 penetrates through the cavity inside the console 1 and the arc-shaped track 11; And the part of the first sleeve shaft 63 in the arc-shaped track 11 is fixedly connected with the base 2;

[0054] The controller 64 is fixedly arranged inside the console 1;

[0055] The stepping motor 65 is fixedly connected inside the console 1;

[0056] The second gear 66 is fixedly connected to the output end of the stepping motor 65, and the second gear 66 is engaged with the first gear 632.

[0057] When the subject's chin is placed on the lower jaw support 51, after the position of the main body 4 is adjusted, if the subject's head rotates slightly left and right around the chin as the fulcrum, it will drive the first rotating shaft 61 to rotate (the first rotating shaft 61 rotates in the through hole 631 in the first sleeve shaft 63), since the angle sensor 62 is fixedly connected to the end of the first rotating shaft 61 inside the console 1, the angle sensor 62 can be a DWQT non-contact angle sensor 62, which measures an angle range of 0-360 degrees (±180 degrees) at any angle, with a measurement resolution of 0.087 degrees; Therefore, the angle sensor 62 can convert the rotation angle signal into an electrical signal, which is then transmitted to the controller 64, the controller 64 receives the signal, processes it, and converts the electrical signal into an electrical pulse signal transmitted to the stepping motor 65, the controller 64 controls the stepping motor 65 to rotate in the opposite direction by the same angle, in cooperation with the engagement of the first gear 632 and the second gear 66, so that the first sleeve shaft 63 rotates in the same direction as the head by the same angle, and since the part of the first sleeve shaft 63 in the arc-shaped track 11 is fixedly connected with the base 2, the main body 4 can move in the arc-shaped track 11, and the moving angle is consistent with the rotation angle of the head; Further, when the head rotates left and right around the chin as the fulcrum, the detection device 43 can still face the pupil; In cooperation with the adjustment of the staff, the staff's adjustment workload is reduced, and the accuracy of the detection result is improved.

[0058] In one specific embodiment of the present invention, the pitch circle diameter and number of teeth of the first gear 632 and the second gear 66 are the same.

[0059] During operation, the pitch circle diameter and number of teeth of gear 632 and gear 66 are the same. This setting ensures that when gear 632 and gear 66 mesh and rotate, the same pitch circle diameter and number of teeth make the rotation angle of gear 632 and gear 66 the same, thereby improving control accuracy.

[0060] In one specific embodiment of the present invention, a rotating sleeve 633 is rotatably connected to the end of the first sleeve shaft 63 away from the first rotating shaft 61.

[0061] In one specific embodiment of the present invention, the outer ring of the rotating sleeve 633 is fixedly provided with a retaining tooth, and the contact position between the rotating sleeve 633 and the edge of the arc-shaped track 11 is fixedly provided with an arc-shaped rack 12.

[0062] During operation, when the first sleeve shaft 63 rotates, the end of the first sleeve shaft 63 away from the first rotating shaft 61 contacts the edge of the arc-shaped track 11 away from the first rotating shaft 61. This allows the edge of the arc-shaped track 11 away from the first rotating shaft 61 to support the first sleeve shaft 63, increasing its stability. A rotating sleeve 633 is rotatably connected to the contact point between the first sleeve shaft 63 and the edge of the arc-shaped track 11 away from the first rotating shaft 61. The outer ring of the rotating sleeve 633 is fixedly provided with retaining teeth, and an arc-shaped rack 12 is fixedly provided at the contact position between the rotating sleeve 633 and the edge of the arc-shaped track 11. (Both the base 2 and the rotating sleeve 633 are located on the first sleeve shaft 63 away from the first rotating shaft 61.) One end of shaft 61, and the rotating sleeve 633 is closer to the end of the first sleeve shaft 63 away from the first rotating shaft 61 than the base 2 (the base 2 is located inside the arc-shaped track 11); during the rotation of the first sleeve shaft 63, the retaining teeth on the rotating sleeve 633 engage with the arc-shaped rack 12, causing the rotating sleeve 633 to rotate. On the one hand, the edge of the arc-shaped track 11 away from the first rotating shaft 61 provides support for the first sleeve shaft 63, increasing the stability of the first sleeve shaft 63. On the other hand, compared with the first sleeve shaft 63 directly contacting the edge of the arc-shaped track 11, this setting changes sliding friction into rolling friction, reducing friction, which reduces wear on the one hand, and reduces motion resistance on the other hand.

[0063] In one specific embodiment of the present invention, a torsion spring 67 is fixedly connected between the first rotating shaft 61 and the angle sensor 62.

[0064] When working, the torsional spring 67 is fixed between the first rotating shaft 61 and the angle sensor 62, when the first rotating shaft 61 is not rotating, the torsional spring 67 is in the original state, when the first rotating shaft 61 rotates, the torsional spring 67 is in the force storage state, this setting makes the first rotating shaft 61 reset when the chin leaves the lower jaw support 51 after rotating, which is convenient for the next use.

[0065] As a specific embodiment of the present application, the top wall of the console 1 is slidably provided with a plug 13, and the first rotating shaft 61 is provided with a slot 611 corresponding to the position of the top wall of the console 1.

[0066] When working, the top wall of the console 1 is slidably provided with a plug 13, and the first rotating shaft 61 is provided with a slot 611 corresponding to the position of the top wall of the console 1, and the plug 13 can be inserted into the slot 611 when the first rotating shaft 61 is not rotating; when the measured person is an adult and has good control ability, the plug 13 can be inserted into the slot 611, so that the first rotating shaft 61 will not rotate, thereby increasing the stability.

[0067] As a specific embodiment of the present application, the top of the lower jaw support 51 is slidably connected with two clamping blocks 52, and one side of the two clamping blocks 52 away from each other is fixedly connected with a first spring 53 between the side wall of the lower jaw support 51.

[0068] When working, the top of the lower jaw support 51 is slidably connected with two clamping blocks 52, the chin of the measured person is placed between the two clamping blocks 52, and the one side of the two clamping blocks 52 away from each other is fixedly connected with a first spring 53 between the side wall of the lower jaw support 51, and the first spring 53 is contracted to clamp the chin of the two clamping blocks 52, and according to the different extension amount of the first spring 53, the chin of different people is adapted; through this setting, when the head of the measured person rotates left and right around the chin fulcrum, the two clamping blocks 52 are stressed, which is more easy to drive the first rotating shaft 61 to rotate, so that the function of the device can be stably played.

[0069] As a specific embodiment of the present application, a plurality of elastic rollers 54 are rotatably connected to the opposite surfaces of the two clamping blocks 52.

[0070] When working, a plurality of elastic rollers 54 are rotatably connected to the opposite surfaces of the two clamping blocks 52, and when the chin is placed between the two clamping blocks 52, the elastic rollers 54 rotate, so that the chin is more smoothly placed between the two clamping blocks 52.

[0071] As a specific embodiment of the present application, a detection button 55 is fixedly arranged on the top of the lower jaw support 51 between the two clamping blocks 52.

[0072] When working, the detection button 55 is fixedly arranged at the top of the chin support 51 and between the two clamping blocks 52. Through the circuit connection, when the detection button 55 is pressed, the display device 42 can have a display. Therefore, when the chin is placed between the two clamping blocks 52 and the detection button 55 is pressed, if the chin is taken out from between the two clamping blocks 52, the head rotation may not cause the rotation of the first rotating shaft 61. Therefore, this setting can remind the staff that the child's chin is not found when it is taken out from the chin support 51, and the rotation of the first rotating shaft 61 is not caused, so that the device loses its function.

[0073] The specific working process is as follows:

[0074] When the chin of the measured person is placed on the chin support 51, after the position of the main body 4 is adjusted, if the head of the measured person rotates left and right around the chin as the fulcrum, the first rotating shaft 61 is driven to rotate (the first rotating shaft 61 rotates in the through hole 631 in the first sleeve shaft 63). Since the angle sensor 62 is fixedly connected to one end of the first rotating shaft 61 inside the control console 1, the angle sensor 62 can be a DWQT non-contact angle sensor 62, which measures an angle range of 0-360 degrees (±180 degrees) at any angle, and a measurement resolution of 0.087 degrees. Therefore, the angle sensor 62 can convert the rotation angle signal into an electrical signal, which is then transmitted to the controller 64. The controller 64 receives the signal, processes it, converts the electrical signal into an electrical pulse signal, and transmits it to the stepper motor 65. The controller 64 controls the stepper motor 65 to rotate in the opposite direction by the same angle, cooperates with the meshing of the first gear 632 and the second gear 66, and then makes the first sleeve shaft 63 rotate in the head rotation direction by the same angle. Since the part of the first sleeve shaft 63 located in the arc-shaped track 11 is fixedly connected with the base 2, the main body 4 can move in the arc-shaped track 11, and the moving angle is consistent with the rotation angle of the head. Therefore, when the head rotates left and right around the chin as the fulcrum, the detection device 43 can still face the pupil. In addition, the first gear 632 and the second gear 66 have the same pitch diameter and tooth number. This setting makes the rotation angle of the first gear 632 and the second gear 66 consistent when they mesh and rotate, thereby improving the control accuracy.

[0075] The above front, back, left, right, up and down are based on the Figure 1 In the drawings, the front of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0076] In the description of the application, it is to be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings and are used only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the application.

[0077] The basic principles, main features and advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. An automatic eye-tracking system for a computerized refractometer, characterized in that, include: A control console (1) is provided with an arc-shaped track (11); a base (2) is movably installed in the arc-shaped track (11); a moving platform (3) is set on the base (2) and can move forward, backward, left, and right on the base (2); a main body (4) is set above the moving platform (3) and a lifting device (41) is provided between the main body (4) and the moving platform (3) and can adjust the height of the main body (4); a display device (42) and a detection device (43) are fixedly set on both sides of the main body (4); a control lever (44) and a locking device (45) are provided on the top of the control console (1); a support frame (5) is fixedly set on the top of the control console (1) and a chin rest (51) is provided in the cavity of the support frame (5); The rotating tracking unit (6) controls the movement of the base (2) within the arc track (11), thereby controlling the main body (4) to automatically track the head movement; The rotation tracking unit (6) includes: a first rotating shaft (61), which is fixedly connected to the lower part of the chin rest (51) and extends into the console (1); an angle sensor (62), which is fixedly connected to one end of the first rotating shaft (61) located inside the console (1); a first sleeve shaft (63), which has a through hole (631) at one end near the first rotating shaft (61), and a first gear (632) is fixedly arranged on the outside of the first sleeve shaft (63) corresponding to the position of the through hole (631), and the first rotating shaft (61) passes through the through hole (631); the console (1) is provided with a horizontal section of fan shape. A fan-shaped cavity, and the fan-shaped cavity is connected to the arc track (11); the end of the first sleeve shaft (63) away from the first rotating shaft (61) passes through the cavity inside the console (1) and the arc track (11); and the part of the first sleeve shaft (63) located inside the arc track (11) is fixedly connected to the base (2); controller (64), the controller (64) is fixedly installed inside the console (1); stepper motor (65), the stepper motor (65) is fixedly connected to the inside of the console (1); second gear (66), the second gear (66) is fixedly connected to the output end of the stepper motor (65), and the second gear (66) meshes with the first gear (632); Therefore, the angle sensor (62) can convert the measured angle signal of the first rotating shaft (61) into an electrical signal, and then transmit it to the controller (64). The controller (64) receives the signal, processes it, and converts the electrical signal into an electrical pulse signal, which is then transmitted to the stepper motor (65). The controller (64) controls the stepper motor (65) to rotate in the opposite direction by the same angle.

2. The automatic eye tracking system for a computerized refractometer according to claim 1, characterized in that: The pitch circle diameter and number of teeth of the first gear (632) and the second gear (66) are the same.

3. The automatic eye tracking system for a computerized refractometer according to claim 1, characterized in that: The end of the first sleeve shaft (63) away from the first rotating shaft (61) is rotatably connected to a rotating sleeve (633).

4. The automatic eye tracking system for a computerized refractometer according to claim 3, characterized in that: The outer ring of the rotating sleeve (633) is fixedly provided with a retaining tooth, and an arc-shaped rack (12) is fixedly provided at the contact position between the rotating sleeve (633) and the edge of the arc-shaped track (11).

5. The automatic eye tracking system for a computerized refractometer according to claim 1, characterized in that: A torsion spring (67) is fixedly connected between the first rotating shaft (61) and the angle sensor (62).

6. The automatic eye tracking system for a computerized refractometer according to claim 1, characterized in that: A pin (13) is slidably provided inside the top wall of the control console (1), and a slot (611) is provided on the part of the first rotating shaft (61) corresponding to the top wall of the control console (1).

7. The automatic eye tracking system for a computerized refractometer according to claim 1, characterized in that: Two clamping blocks (52) are slidably connected to the top of the jaw support (51), and a spring (53) is fixed between the side of the two clamping blocks (52) that are far apart from each other and the side wall of the jaw support (51).

8. The automatic eye tracking system for a computerized refractometer according to claim 7, characterized in that: The two clamping blocks (52) are rotatably connected to each other by a plurality of elastic rollers (54).

9. The automatic eye tracking system for a computerized refractometer according to claim 8, characterized in that: A detection button (55) is fixedly installed on the top of the chin support (51) and between the two clamps (52).

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