CN115644792A - Automatic tracking system for human eyes of computer optometry instrument - Google Patents

Abstract

The invention belongs to the technical field of computer optometry instruments, in particular to an automatic human eye tracking system of a computer optometry instrument; an automatic eye tracking system of a computer optometry instrument comprises a console, wherein an arc-shaped track, a base, a mobile station, a main body, a support frame and a rotary tracking unit are arranged on the console; according to the invention, by arranging the rotary tracking unit, when the head of the detected person rotates left and right, the rotary tracking unit is used for controlling the main body to automatically track the head movement, so that the detection device is over against the pupil position, and the adjustment of workers is matched, so that the adjustment workload of the workers is reduced, and the accuracy of the detection result is improved; the head of the tested person is not fixed, so that the tension of the tested person is reduced; especially for children with small galls, if the head of the children is fixed, the nervous mood of the children is increased, even crying and screaming are caused, and the detection process cannot be carried out.

Description

A computer optometry human eye automatic tracking system

technical field

The invention belongs to the technical field of computer optometry, in particular to an automatic eye tracking system for computer optometry.

Background technique

Computer optometry is a vision optometry instrument; computer optometry belongs to objective optometry, and its principle is basically the same as that of retinoscopy. It uses infrared light source and automatic fog vision device to achieve the purpose of relaxing eye adjustment, and uses photoelectric technology and automatic control technology to check the diopter; Both subjective optometry and objective optometry can accurately measure the patient's diopter and axis of astigmatism. These two methods require rich experience in optometry, and it takes a long time to master the technology of retinoscopy, while computer optometry technology is easier to learn and master. Computer optometry can be used for diagnostic optometry for soft contact lens fitting, which can quickly measure the degree of refraction without mydriasis. The optometry results of the computer refractor are all automatically printed without conversion. Generally, it can measure a patient in a few seconds to a few minutes, and can quickly measure the degree of refractive error, providing more accurate diopter and interpupillary distance for lens correction ;

During the use of the computerized refractor, it is necessary to place the subject's chin on the chin rest and guide the subject to look directly at the cursor in the front refractor; however, in the process of testing, the accuracy of the computerized refractor is greatly affected Influenced by factors, such as the subject's head rotating and tilting from side to side, moving around, and insufficient relaxation and adjustment, any tilt of the head and eye position will inevitably affect the accuracy of the diopter test results, and even the diopter difference between repeated checks is relatively small. Large, especially for children, children have poor control ability or lack of concentration, and cannot control the head to move well during the optometry process; making the head rotate left and right in a small range will lead to errors in the computer optometry test Larger, affect the measurement accuracy.

In view of this, the present invention solves the above-mentioned technical problems by proposing a computerized optometry human eye automatic tracking system.

Contents of the invention

In order to make up for the deficiencies of the existing technology, solve the problem that children's control ability is not strong or they can't concentrate, and they can't control the head to move well in the process of optometry; the small range of left and right rotation of the head is skewed, resulting in the failure of the computer optometry test. To solve the problem of relatively large errors, the present invention provides an automatic human eye tracking system for a computer optometry instrument.

The technical solution adopted by the present invention to solve the technical problem is: a computer optometry human eye automatic tracking system, comprising:

console, the console is provided with an arc track;

a base, the base is movably installed in the arc track;

A mobile station, the mobile station is arranged on the base, and the mobile station can move forward, backward, left, and right on the base;

Main body, the main body is arranged above the mobile platform, and a lifting device is arranged between the main body and the mobile platform, and the lifting device can adjust the height of the main body; the two sides of the main body are respectively fixedly equipped with a display device and a detection device. device; the top of the console is provided with a joystick and a locking device;

A support frame, the support frame is fixedly arranged on the top of the console, and the cavity of the support frame is provided with a chin rest;

The rotation tracking unit controls the movement of the base to automatically track the movement of the head by controlling the movement of the base in the arc track.

Preferably, the rotation tracking unit includes:

The No. 1 rotating shaft, the No. 1 rotating shaft is fixedly connected to the bottom of the chin rest and extends to the interior of the console;

An angle sensor, the angle sensor is fixedly connected to the end of the No. 1 rotating shaft located inside the console;

The No. 1 sleeve shaft is provided with a through hole at one end of the No. 1 sleeve shaft close to the No. 1 rotating shaft, and a No. 1 gear is fixedly arranged on the outside of the No. 1 sleeve shaft corresponding to the through hole, and the No. 1 rotating shaft is set through the through hole; The console is provided with a fan-shaped cavity with a horizontal section, and the fan-shaped cavity is connected to the arc track; the end of the No. 1 sleeve shaft away from the No. 1 rotating shaft runs through the cavity and the arc track inside the console; and The part of the No. 1 sleeve shaft located in the arc track is fixedly connected with the base;

a controller, the controller is fixed inside the console;

A stepping motor, the stepping motor is fixedly connected inside the console;

No. 2 gear, the No. 2 gear is fixedly connected to the output end of the stepping motor, and the No. 2 gear meshes with the No. 1 gear.

Preferably, the diameter of the pitch circle and the number of teeth of the No. 1 gear and the No. 2 gear are consistent.

Preferably, the end of the No. 1 sleeve shaft away from the No. 1 rotating shaft is sleeved with a rotating sleeve.

Preferably, the outer ring of the rotating sleeve is fixedly provided with locking teeth, and the contact position between the rotating sleeve and the edge of the arc-shaped track is fixedly provided with an arc-shaped rack.

Preferably, a torsion spring is fixedly connected between the first rotating shaft and the angle sensor.

Preferably, a bolt is slidably arranged in the top wall of the console, and a slot is provided at a part of the first rotating shaft corresponding to the top wall of the console.

Preferably, two clips are slidably connected to the top of the chin rest, and a No. 1 spring is fixedly connected between the sides of the two clips away from each other and the side wall of the chin rest.

Preferably, a plurality of elastic rollers are rotatably connected to the opposite surfaces of the two clamping blocks.

Preferably, a detection button is fixedly arranged on the top of the chin rest and between the two clamping blocks.

The beneficial effects of the present invention are as follows:

1. A computer optometry human eye automatic tracking system according to the present invention, when the subject's chin is placed on the chin rest, after the position of the main body is adjusted, if the subject's head rotates around the chin as the fulcrum , it drives the No. 1 rotating shaft to rotate. Since the angle sensor is fixedly connected to the end of the No. 1 rotating shaft located inside the console, the angle sensor can convert the rotating angle signal into an electrical signal, and then transmit it to the controller. The controller receives the signal, and after Processing, the electrical signal is converted into an electrical pulse signal and transmitted to the stepping motor, the controller controls the stepping motor to rotate in the opposite direction at the same angle, and cooperates with the meshing of the No. 1 gear and the No. 2 gear, so that the No. 1 sleeve axial head The rotation direction is rotated by the same angle.

2. A computer optometry human eye automatic tracking system according to the present invention, by setting the reference 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 mesh and rotate, The uniform diameter of the indexing circle and the number of teeth make the rotation angle of the first gear and the second gear consistent, thereby improving the control accuracy and making the device more reliable.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a perspective view of the present invention;

Fig. 2 is a side view of the present invention;

Fig. 3 is a top view of the present invention;

Figure 4 is a top sectional view of the console;

Fig. 5 is a partial enlarged view of A place in Fig. 4;

Figure 6 is a partial sectional view of the console;

Figure 7 is a sectional view of the clamping block;

In the figure: console 1, arc track 11, arc rack 12, latch 13, base 2, mobile platform 3, main body 4, lifting device 41, display device 42, detection device 43, joystick 44, locking device 45 , support frame 5, jaw rest 51, clamp block 52, No. 1 spring 53, elastic roller 54, detection button 55, rotation tracking unit 6, No. 1 rotating shaft 61, slot 611, angle sensor 62, No. 1 sleeve shaft 63 , through hole 631, No. 1 gear 632, rotating sleeve 633, controller 64, stepper motor 65, No. 2 gear 66, torsion spring 67.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Figures 1 to 7, a computerized optometry human eye automatic tracking system according to the present invention includes:

A console 1, the console 1 is provided with an arc track 11;

A base 2, the base 2 is movably installed in the arc track 11;

A mobile station 3, the mobile station 3 is arranged on the base 2, and the mobile station 3 can move forward, backward, left, and right on the base 2;

Main body 4, the main body 4 is arranged above the mobile platform 3, a lifting device 41 is arranged between the main body 4 and the mobile platform 3, and the lifting device 41 can adjust the height of the main body 4; the two sides of the main body 4 A display device 42 and a detection device 43 are respectively fixedly arranged on the sides; a joystick 44 and a locking device 45 are arranged on the top of the console 1;

A support frame 5, the support frame 5 is fixedly arranged on the top of the console 1, the cavity of the support frame 5 is provided with a chin rest 51,

The rotation tracking unit 6 controls the movement of the base 2 in the arc track 11 to control the main body 4 to automatically track the movement of the head.

When working, in the process of using the computer refractor, the subject’s chin needs to be placed on the chin rest 51, and the subject should be guided to look squarely at the cursor in the front refractor; however, during the detection process, the computer refractor’s Accuracy is affected by many factors, such as the subject’s head rotating and tilting left and right, moving around, and insufficient relaxation and adjustment. Any inclination of the head and eye positions will inevitably affect the accuracy of the diopter test results, and even repeat the test There is a large difference in the degrees of the children, especially for children. Children have poor control ability or inattention, and cannot control the head to move well during the optometry process; making the head rotate left and right in a small range will lead to computer optometry. The error of the instrument test is large, which affects the measurement accuracy; when the application is in use, guide the subject to place the chin on the chin rest 51, and manipulate the joystick 44, so that the mobile platform 3 can drive the main body 4 to move forward, backward, left, and right on the base 2. movement, and the lifting device 41 lifts the main body 4, the main body 4 moves back and forth to adjust the focus, moves left and right to adjust the position of the left and right eyes, and moves up and down to assist the detection device 43 to face the pupil of the human eye; the locking device 45 It is used to lock the movement of the main body 4 to prevent the computer refractometer from moving freely and causing damage to the main body 4 when the computer optometry instrument is being transported. The structure and principle of the computer optometry instrument are consistent); of course, the application is consistent with the computer optometry instrument of the prior art, and there is also a manual mode and an automatic mode. Switching the automatic mode can automatically control the movement of the main body 4 to complete the data collection of the human eye; when the main body 4 After the position is adjusted, the human eye data will be collected. If the subject's head rotates from side to side in a small range at this time, especially for children with hyperactivity, poor control ability and inattention, the head rotates from side to side in a small range. Occasionally, 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 provided to control the main body 4 when the subject's head rotates left and right. The head movement is automatically tracked so that the detection device 43 is facing the position of the pupil; and with the adjustment of the staff, the accuracy of the detection result is improved.

Because the subject's relaxation and adjustment are not enough, it will also lead to inaccurate measurement results, so this application does not use the subject's head to be fixed, thereby reducing the subject's tension; especially for children who are timid, if the Fixing the head will further increase the tension of the child, and even cause crying, making the detection process impossible.

As a specific embodiment of the present invention, the rotation tracking unit 6 includes:

The No. 1 rotating shaft 61, the No. 1 rotating shaft 61 is fixedly connected under the chin rest 51 and extends to the inside of the console 1;

An angle sensor 62, the angle sensor 62 is fixedly connected to one end of the No. 1 rotating shaft 61 located inside the console 1;

The No. 1 sleeve shaft 63, the end of the No. 1 sleeve shaft 63 close to the No. 1 rotating shaft 61 is provided with a through hole 631, and a No. 1 gear 632 is fixedly arranged on the outside of the No. 1 sleeve shaft 63 corresponding to the through hole 631. The rotating shaft 61 is set through the through hole 631; the console 1 is provided with a fan-shaped cavity with a horizontal section, and the fan-shaped cavity is connected to the arc-shaped track 11; the first sleeve shaft 63 is far away from the end of the first rotating shaft 61 It runs through the cavity inside the console 1 and the arc track 11; and the part of the No. 1 sleeve shaft 63 located in the arc track 11 is fixedly connected with the base 2;

a controller 64, the controller 64 is fixed inside the console 1;

Stepping motor 65, described stepping motor 65 is fixedly connected in console 1 inside;

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

During work, when the subject's chin is placed on the chin rest 51, after the position of the main body 4 is adjusted, if the subject's head rotates slightly around the chin as a fulcrum, the No. 1 rotating shaft 61 is driven to rotate (No. 1 rotating shaft 61 rotates in the through hole 631 in the No. 1 sleeve shaft 63), because the angle sensor 62 is fixedly connected to the end of the No. 1 rotating shaft 61 and is positioned at the inside of the console 1, the angle sensor 62 can be a DWQT non-contact angle sensor 62, which measures The range of angles is any angle from 0 to 360 degrees (±180 degrees), and the measurement resolution is 0.087 degrees; therefore, the angle sensor 62 can convert the angle signal of rotation into an electrical signal, which is then transmitted to the controller 64, and the controller 64 receives After processing, the electric signal is converted into an electric pulse signal and transmitted to the stepping motor 65. The controller 64 controls the stepping motor 65 to rotate the same angle in the opposite direction, and cooperates with the meshing of the No. 1 gear 632 and the No. 2 gear 66, and then Make the No. 1 sleeve shaft 63 rotate the same angle to the head rotation direction, and because the part of the No. 1 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 move The angle is consistent with the rotation angle of the head; thus, when the head rotates left and right around the chin as a fulcrum, the detection device 43 can still face the pupil directly; in conjunction with the adjustment of the staff, the adjustment workload of the staff is reduced, and the detection result is improved. Accuracy improved.

As a specific embodiment of the present invention, the pitch circle diameter and number of teeth of the No. 1 gear 632 and the No. 2 gear 66 are consistent.

During work, the diameter of the index circle and the number of teeth of the No. 1 gear 632 and the No. 2 gear 66 are consistent. This setting makes the No. 1 gear 632 and the No. When the second gear 66 rotates, the rotation angles are consistent, thereby improving the control accuracy.

As a specific embodiment of the present invention, the end of the first sleeve shaft 63 away from the first rotating shaft 61 is rotatably connected with a rotating sleeve 633 .

As a specific embodiment of the present invention, the outer ring of the rotating sleeve 633 is fixedly provided with locking teeth, and the rotating sleeve 633 is fixedly provided with an arc-shaped rack 12 at a position in contact with the edge of the arc-shaped track 11 .

During operation, when the No. 1 sleeve shaft 63 rotates, the end of the No. 1 sleeve shaft 63 away from the No. 1 shaft 61 contacts the edge of the arc track 11 away from the No. 1 shaft 61, so that the arc track 11 is far away from the side of the No. 1 shaft 61. The edge supports the No. 1 sleeve shaft 63 to increase the stability of the No. 1 sleeve shaft 63; by setting the No. 1 sleeve shaft 63 and the arc track 11 away from the edge contact part of the No. 1 rotating shaft 61, a rotating sleeve 633 is rotated and connected. And the outer ring of the rotating sleeve 633 is fixedly provided with locking teeth, and the contact position of the rotating sleeve 633 and the edge of the arc track 11 is fixedly provided with an arc-shaped rack 12, (the base 2 and the rotating sleeve 633 are located on the first sleeve shaft 63 away from the first One end of the rotating shaft 61, and the rotating sleeve 633 is closer to the end of the No. 1 sleeve shaft 63 away from the No. 1 rotating shaft 61 than the base 2, and the base 2 is located in the arc track 11); during the rotation of the No. 1 sleeve shaft 63 , the locking teeth on the rotating sleeve 633 cooperate with the arc-shaped rack 12, so that the rotating sleeve 633 rotates. On the one hand, the edge of the arc-shaped track 11 away from the No. The stability of the shaft 63, on the other hand, compared with the No. 1 sleeve shaft 63 directly contacting the edge of the arc track 11, this setting changes the sliding friction into rolling friction, which reduces the friction. On the one hand, it reduces wear, on the other hand Reduced resistance to movement.

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

During work, a torsion spring 67 is fixedly connected between the first rotating shaft 61 and the angle sensor 62. When the first rotating shaft 61 does not rotate, the torsion spring 67 is in the original state. When the first rotating shaft 61 rotates, the torsion spring 67 is in a power storage state. This setting makes the No. 1 rotating shaft 61 rotate, and when the chin leaves the chin rest 51, the No. 1 rotating shaft 61 can be reset, so that the person under test can place the chin on the chin rest 51 in the next use.

As a specific embodiment of the present invention, a bolt 13 is slidably disposed in the top wall of the console 1 , and a slot 611 is opened on the first rotating shaft 61 corresponding to the top wall of the console 1 .

During operation, the top wall of the console 1 is slidingly provided with a latch 13, and the position of the first rotating shaft 61 corresponding to the top wall of the console 1 is provided with a slot 611. When the first rotating shaft 61 is not rotating, the latch 13 can be inserted into the slot 611 Inside; when the subject is an adult with good control ability, the latch 13 can be inserted into the slot 611 so that the No. 1 rotating shaft 61 will not rotate, which increases the stability.

As a specific embodiment of the present invention, two clips 52 are slidably connected to the top of the chin rest 51, and a No. 1 spring is fixedly connected between the sides of the two clips 52 that are far away from each other and the side wall of the chin rest 51. 53.

During work, two clips 52 are slidably connected to the top of the chin rest 51, and the subject puts his chin between the two clips 52, and the sides of the two clips 52 that are far away from each other are fixed between the side walls of the chin rest 51. Connected with a No. 1 spring 53, the No. 1 spring 53 shrinks so that the two clamping blocks 52 can clamp the chin, and according to the different expansion and contraction of the No. 1 spring 53, it can adapt to the jaws of different people; When rotating left and right around the fulcrum of the chin, the two clamping blocks 52 are stressed, and it is easier to drive the first rotating shaft 61 to rotate, so that the function of the device can be stably exerted.

As a specific embodiment of the present invention, a plurality of elastic rollers 54 are rotatably connected to the two clamping blocks 52 facing each other.

During work, the two clamping blocks 52 are connected with a plurality of elastic rollers 54 which rotate oppositely. between putting in and taking out.

As a specific embodiment of the present invention, a detection button 55 is fixedly arranged on the top of the chin rest 51 and between the two clamping blocks 52 .

During work, a detection button 55 is fixedly arranged on the top of the chin rest 51 and between the two clamping blocks 52. When the detection button 55 is pressed through a circuit connection, a display can be displayed on the display device 42, so the chin is put into the two clamping blocks 52 Press the detection button 55 between them. When the chin does not touch the detection button 55, it means that the chin is taken out from between the two clamps 52. At this time, turning the head may not cause the rotation of the first rotating shaft 61, so this setting can remind the staff , to prevent the child from being discovered when the chin leaves the chin rest 51 and thus not causing the rotation of the No. 1 rotating shaft 61, so that the device becomes ineffective.

The specific workflow is as follows:

When the subject's chin is placed on the chin rest 51, after the position of the main body 4 is adjusted, if the subject's head rotates around the chin as a fulcrum, it will drive the No. 1 rotating shaft 61 to rotate (No. 1 rotating shaft 61 is in the No. 1 sleeve rotation in the through hole 631 in the shaft 63), because the angle sensor 62 is fixedly connected to the end of the No. 1 rotating shaft 61 inside the console 1, the angle sensor 62 can be a DWQT non-contact angle sensor 62, and the angle range of its measurement is 0 ～360 degrees (±180 degrees) any angle, the measurement resolution is 0.087 degrees; so the angle sensor 62 can convert the angle signal of rotation into an electrical signal, and then transmit it to the controller 64, and the controller 64 receives the signal, and after processing, The electric signal is converted into an electric pulse signal and transmitted to the stepping motor 65. The controller 64 controls the stepping motor 65 to rotate in the opposite direction at the same angle, and cooperates with the meshing of the No. 1 gear 632 and the No. 2 gear 66, thereby making the No. 1 sleeve shaft 63 rotates the same angle to the head rotation direction, and because the part of the No. 1 sleeve shaft 63 located in the arc track 11 is fixedly connected with the base 2, the main body 4 can move in the arc track 11, and the moving angle is the same as that of the head The rotation angles are the same; furthermore, when the head rotates left and right around the chin as a fulcrum, the detection device 43 can still face the pupils, and then cooperate with the adjustment of the staff to reduce the adjustment workload of the staff and improve the accuracy of the detection results. ; The index circle diameter and the number of teeth of No. 1 gear 632 and No. 2 gear 66 are consistent, and this setting makes No. 1 gear 632 mesh with No. 2 gear 66. When rotating, the index circle diameter and the number of teeth are consistent so that No. The rotation angles of the gears 66 are consistent when they rotate, thereby improving the control accuracy.

The above-mentioned front, back, left, right, up, and down are all based on Figure 1 in the accompanying drawings of the specification, and according to the viewing angle of the person as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left. And so on.

In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the Means that a device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of the invention.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A computer optometry human eye automatic tracking system, characterized in that it comprises: A console (1), the console (1) is provided with an arc track (11); a base (2), the base (2) is movably installed in the arc track (11); A mobile station (3), the mobile station (3) is arranged on the base (2), and the mobile station (3) can move forward, backward, left, and right on the base (2); The main body (4), the main body (4) is arranged above the mobile platform (3), and a lifting device (41) is arranged between the main body (4) and the mobile platform (3), and the lifting device (41) can The height of the main body (4) is adjusted; the two sides of the main body (4) are respectively fixedly provided with a display device (42) and a detection device (43); the top of the console (1) is provided with a joystick (44 ) and locking device (45); A support frame (5), the support frame (5) is fixedly arranged on the top of the console (1), and the cavity of the support frame (5) is provided with a chin rest (51); A rotation tracking unit (6), the rotation tracking unit (6) controls the movement of the base (2) in the arc track (11), and then controls the main body (4) to automatically track the movement of the head. 2. A computerized optometry human eye automatic tracking system according to claim 1, characterized in that: said rotation tracking unit (6) comprises: The No. 1 rotating shaft (61), the No. 1 rotating shaft (61) is fixedly connected to the lower part of the chin rest (51) and extends to the inside of the console (1); An angle sensor (62), the angle sensor (62) is fixedly connected to one end of the No. 1 rotating shaft (61) and is positioned at the inside of the console (1); The No. 1 sleeve shaft (63), the end of the No. 1 sleeve shaft (63) close to the No. 1 rotating shaft (61) is provided with a through hole (631), and the outer side of the No. 1 sleeve shaft (63) corresponds to the through hole (631) A No. 1 gear (632) is installed at a fixed position, and the No. 1 rotating shaft (61) is set through the through hole (631); the console (1) is provided with a cavity with a horizontal cross section, and the fan-shaped cavity and the arc shaped track (11); the end of the No. 1 sleeve shaft (63) away from the No. 1 rotating shaft (61) runs through the cavity inside the console (1) and the arc track (11); and the No. 1 sleeve The part of the shaft (63) located in the arc track (11) is fixedly connected with the base (2); a controller (64), the controller (64) is fixedly arranged inside the console (1); Stepping motor (65), described stepping motor (65) is fixedly connected in console (1) inside; The 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). 3. A computerized refractor human eye automatic tracking system according to claim 2, characterized in that: the pitch circle diameter and the number of teeth of the No. 1 gear (632) and the No. 2 gear (66) are consistent. 4. A computerized refractor eye automatic tracking system according to claim 2, characterized in that: the end of the No. 1 sleeve shaft (63) away from the No. 1 rotating shaft (61) is rotatably connected with a rotating sleeve (633) . 5. A computerized refractor human eye automatic tracking system according to claim 4, characterized in that: the outer ring of the rotating sleeve (633) is fixedly provided with locking teeth, and the rotating sleeve (633) is aligned with the arc The edge contact position of the rail (11) is fixedly provided with an arc-shaped rack (12). 6. A computerized refractor eye automatic tracking system according to claim 2, characterized in that: a torsion spring (67) is fixedly connected between the first rotating shaft (61) and the angle sensor (62). 7. A computerized optometry human eye automatic tracking system according to claim 2, characterized in that: a latch (13) is slidably arranged in the top wall of the console (1), and the No. 1 rotating shaft (61 ) is provided with a slot (611) at the position corresponding to the top wall of the console (1). 8. A computerized optometry human eye automatic tracking system according to claim 2, characterized in that two clamping blocks (52) are slidably connected to the top of the chin rest (51), and the two clamping blocks (52) is firmly connected with a No. 1 spring (53) between the side that is far away from each other and the sidewall of the chin rest (51). 9. A computerized refractor eye automatic tracking system according to claim 8, characterized in that two clamping blocks (52) are rotatably connected with a plurality of elastic rollers (54) opposite to each other. 10. A computerized optometry human eye automatic tracking system according to claim 9, characterized in that: a detection button (55) is fixedly arranged on the top of the chin rest (51) and between two clamping blocks (52) ).

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