CN216221411U - Focusing and astigmatism compensation mechanism and subjective and objective integrated precise optometry device - Google Patents
Focusing and astigmatism compensation mechanism and subjective and objective integrated precise optometry device Download PDFInfo
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- CN216221411U CN216221411U CN202120561949.4U CN202120561949U CN216221411U CN 216221411 U CN216221411 U CN 216221411U CN 202120561949 U CN202120561949 U CN 202120561949U CN 216221411 U CN216221411 U CN 216221411U
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- 201000009310 astigmatism Diseases 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 title claims abstract description 52
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- 239000010959 steel Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 210000005252 bulbus oculi Anatomy 0.000 claims description 5
- 230000004382 visual function Effects 0.000 claims description 5
- 238000012937 correction Methods 0.000 description 7
- 208000014733 refractive error Diseases 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 210000001747 pupil Anatomy 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
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- 238000003786 synthesis reaction Methods 0.000 description 2
- 208000002177 Cataract Diseases 0.000 description 1
- 206010020675 Hypermetropia Diseases 0.000 description 1
- 208000029091 Refraction disease Diseases 0.000 description 1
- 230000004430 ametropia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
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- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
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Abstract
The utility model discloses a subjective and objective integrated precise optometry device with a focusing and astigmatism compensation mechanism, which comprises an optometry module, a focusing mechanism and an astigmatism compensation mechanism; the focusing mechanism is used for assisting in adjusting the focal length in the optometry module, and the astigmatism compensation mechanism is used for assisting in adjusting astigmatism in the optometry module; the movable plate is matched with the guide assembly, the movable plate can freely move on the guide assembly, the driving assembly is connected with the guide assembly, and the driving assembly drives the sliding plate to move on the guide assembly; the guide assembly is a guide rail groove and a guide rail; the driving assembly comprises a first motor, a pulley block and a traction rope; the guide rail groove is arranged below the sliding plate, the guide rail groove is matched with the guide rail, and the guide rail groove can freely slide on the guide rail; focusing mechanism and astigmatism compensation mechanism simple structure in this scheme easily operates, can be fast accurate when using adjust focus and astigmatism.
Description
Technical Field
The utility model relates to the field of ophthalmic medical equipment, in particular to a focusing and astigmatism compensation mechanism and a subjective and objective integrated precise optometry device.
Background
Uncorrected refractive errors (including myopia, hyperopia and astigmatism), and non-surgically treated cataracts are the two leading causes of vision impairment (see literature [ J ]. Ophthematology 2016; 123 (5): 1036) 1042. The critical point in performing refractive correction for a patient is the accurate refraction of the human eye for the degree of refractive error to give the best corrective prescription.
Currently, the optometry procedure includes two steps of objective optometry and subjective optometry. Methods for objective refraction include shadowgraph and optometry and objective measurement of refractive errors of patients by means of professional equipment such as computer optometry, eye aberrometers and the like. On the basis, the subjective refraction is carried out by utilizing the trial frame insert or the comprehensive refractometer. Since objective refraction does not involve subjective feedback from the subject, the test results are often used as reference. The accuracy and repeatability of subjective refraction depends on the degree of fitting of the examinee, the level of the examinee and clinical experience to a great extent, so that the quality of the corrective prescription obtained based on the existing subjective refraction method is uneven. More importantly, the prior trial frame insert or comprehensive optometry instrument adopts trial lenses with discrete degrees (step length of 0.25D) to carry out subjective optometry, has a chemical adjustment error, cannot realize continuous accurate optometry on ametropia of human eyes, and becomes a normal state through over correction or under correction.
The utility model discloses an subjective and objective integrated precise optometry device and an optometry method (application number: 201910777661.8), and discloses a novel subjective and objective integrated optometry device which consists of two identical optical paths for a left eye and a right eye, wherein each optical path comprises a human eye dioptric objective measurement subsystem, a human eye dioptric correction subsystem, an eyeball positioning subsystem and a subjective visual function test subsystem. Aiming at the focusing and astigmatism compensation requirements of the optometry device, the focusing and astigmatism compensation mechanism is realized by the following means, and the optometry device has the advantages of quick response, low cost, convenience in use, compact structure and the like.
However, in the prior art, the focusing structure and the astigmatism compensation structure are complex and not easy to adjust, which brings inconvenience to the operators.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a subjective and objective integrated precise optometry device with a focusing and astigmatism compensation mechanism aiming at the defects, and solves the problems that in the prior art, a focusing structure and an astigmatism compensation structure are complex and are not easy to adjust, and inconvenience is brought to operators.
The scheme is realized as follows:
a focusing mechanism comprises a driving component, a guide component and a sliding plate; the movable plate is matched with the guide assembly, the movable plate can freely move on the guide assembly, the driving assembly is connected with the guide assembly, and the driving assembly drives the sliding plate to move on the guide assembly.
Based on the focusing mechanism, the guide assembly is a guide rail groove and a guide rail; the driving assembly comprises a first motor, a pulley block and a traction rope; the guide rail groove is arranged below the sliding plate, the guide rail groove is matched with the guide rail, and the guide rail groove can freely slide on the guide rail; the pulley block and the first motor are arranged below the guide rail, the traction rope is matched with the pulley block and then is connected with the output end of the first motor and the guide rail groove respectively, and the guide rail groove is driven to slide on the guide rail surface in the radial direction through the rotation of the first motor, so that the sliding plate can slide left and right on the plane.
Based on the focusing mechanism, the traction rope is one or more of a steel wire, a steel rope and a chain.
The scheme also provides an astigmatism compensation mechanism, which comprises a motor assembly, a cylindrical mirror pair and a rotating cylinder assembly; the rotating cylinder assembly comprises 2 rotating cylinders coaxially arranged, the motor assembly drives each rotating cylinder to coaxially rotate, and the cylindrical mirror pair is arranged in the rotating cylinders.
Based on the astigmatism compensation mechanism, the motor assembly comprises a second motor and a third motor, and the rotating cylinder assembly comprises a first rotating cylinder and a second rotating cylinder; the cylindrical mirror pair comprises a first cylindrical mirror and a second cylindrical mirror;
the output ends of the second motor and the third motor are respectively provided with a rotating gear, the first rotating cylinder and the second rotating cylinder are coaxially arranged, the first rotating cylinder is sleeved in the second rotating cylinder, one end of the first rotating cylinder is provided with a first auxiliary gear, and the second rotating cylinder is provided with a second auxiliary gear on the end face close to the second auxiliary gear.
Based on the astigmatism compensation mechanism, the first auxiliary gear and the second auxiliary gear are both arranged perpendicular to the wall surfaces of the first rotating cylinder and the second rotating cylinder;
the first auxiliary gear is meshed with a rotating gear of the second motor, the second auxiliary gear is meshed with a rotating gear of the third motor, and the first rotating cylinder and the second rotating cylinder are driven to rotate respectively or synchronously through rotation of the second motor and the third motor.
Based on the astigmatism compensation mechanism, the first cylindrical mirror is arranged on the end face, far away from the first auxiliary gear, of the first rotating cylinder, and the second cylindrical mirror is arranged on the end face, far away from the second auxiliary gear, of the second rotating cylinder; the first cylindrical mirror and the second cylindrical mirror are driven to synchronously or respectively rotate through the rotation of the first rotating cylinder and the second rotating cylinder.
The scheme also provides a subjective and objective integrated precise optometry device with a focusing and astigmatism compensation mechanism, which comprises an optometry module, a focusing mechanism and an astigmatism compensation mechanism; the focusing mechanism is used for assisting in adjusting the focal length in the optometry module, and the astigmatism compensation mechanism is used for assisting in adjusting astigmatism in the optometry module.
Based on the subjective and objective integrated precise optometry device with the focusing and astigmatism compensation mechanisms, the subjective and objective integrated precise optometry device comprises a human eye refractive objective measurement subsystem, a human eye refractive correction subsystem, an eyeball positioning subsystem, a subjective visual function test subsystem and a binocular automatic positioning and tracking mechanism, and all the systems are matched with one another to form the optometry device.
Compared with the prior art, the utility model has the beneficial effects that:
1. focusing mechanism and astigmatism compensation mechanism simple structure in this scheme easily operates, can be fast accurate when using adjust focus and astigmatism.
Drawings
FIG. 1 is a schematic view of the focusing mechanism of the present invention;
FIG. 2 is a schematic side view of the astigmatism compensating mechanism of the utility model;
FIG. 3 is a schematic structural view of a first rotary cylinder and a second rotary cylinder in the present invention;
FIG. 4 is a schematic structural diagram of an objective and subjective integrated precision optometry apparatus according to the present invention;
FIG. 5 is a schematic structural diagram of another subjective and objective integrated precision optometry apparatus according to the present invention;
in the figure: 1. the human eye; 2. a pupil imaging device; 3. a first relay telescope; 4. through the cylindrical mirror pair; 5. a first beam splitter; 6. a second relay telescope; 7. a wavefront sensor; 8. a visual target display device; 9. a near-infrared beacon light source; 10. a collimating objective lens; 11. a sighting target objective lens; 12. a mirror; 13. a second spectroscope; 301. a sliding plate; 302. a first motor; 303. a hauling rope; 304. a pulley block; 305. A guide rail; 306. a guide rail groove; 401. a second motor; 403. a first rotating drum; 404. a second rotary cylinder; 405. a first cylindrical mirror; 406. a second cylindrical mirror; 407. a rotating gear; 408. a first auxiliary gear; 409. a second auxiliary gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1
Referring to fig. 1 to 3, the present invention provides a technical solution:
the subjective and objective integrated precise optometry device with the focusing and astigmatism compensation mechanisms comprises an optometry module, a focusing mechanism and an astigmatism compensation mechanism; the focusing mechanism is used for assisting in adjusting the focal length in the optometry module, and the astigmatism compensation mechanism is used for assisting in adjusting astigmatism in the optometry module.
The focusing mechanism and the astigmatism compensation mechanism are brought in a specific mode, so that the focusing and astigmatism compensation mechanism is simpler in structure and more convenient and fast to use.
The focusing mechanism comprises a sliding plate 301, a guide rail groove 306, a guide rail 305, a first motor 302, a pulley block 304 and a traction rope 303; the guide rail groove 306 is arranged below the sliding plate 301, the guide rail groove 306 is matched with the guide rail 305, and the guide rail groove 306 can freely slide on the guide rail 305; the pulley block 304 and the first motor 302 are arranged below the guide rail 305, the traction rope 303 is matched with the pulley block 304 and then is respectively connected with the output end of the first motor 302 and the guide rail groove 306, and the guide rail groove 306 is driven to slide on the surface of the guide rail 305 in the radial direction through the rotation of the first motor 302, so that the sliding plate 301 slides left and right on the plane.
The fixed focusing optical device in the optometry module is arranged on the sliding plate 301, and the motor drives the traction rope 303 to pull the sliding plate 301 to slide left and right on the horizontal plane through the pulley block 304 so as to realize focusing.
In this embodiment, the hauling cable 303 may be a steel wire, a steel rope, a chain, or the like.
The astigmatism compensation mechanism comprises a motor assembly, a cylindrical mirror pair and a rotating cylinder assembly; the cylindrical mirror assembly is arranged on the rotating cylinders, the motor assembly drives the rotating cylinders to coaxially rotate, the cylindrical mirror pair is arranged on the rotating cylinders, the rotating cylinder assembly is driven to rotate through the motor assembly, rotation of the cylindrical mirror pair is finally achieved, and astigmatism compensation is achieved through a cylindrical mirror astigmatism synthesis formula.
The motor assembly includes a second motor 401 and a third motor, and the rotating cylinder assembly includes a first rotating cylinder 403 and a second rotating cylinder 404; the pair of cylindrical mirrors includes a first cylindrical mirror 405 and a second cylindrical mirror 406;
the output ends of the second motor 401 and the third motor are respectively provided with a rotating gear 407, the first rotating cylinder 403 and the second rotating cylinder 404 are coaxially arranged, the first rotating cylinder 403 is sleeved in the second rotating cylinder 404, one end of the first rotating cylinder 403 is provided with a first auxiliary gear 408, and the end surface of the second rotating cylinder 404, which is close to the first auxiliary gear, is also provided with a second auxiliary gear 409;
the first assist gear 408 and the second assist gear 409 are both provided perpendicular to the wall surfaces of the first rotating cylinder 403 and the second rotating cylinder 404.
The first auxiliary gear 408 is meshed with a rotating gear 407 of the second motor 401, the second auxiliary gear 409 is meshed with a rotating gear 407 of the third motor, and the first rotating cylinder 403 and the second rotating cylinder 404 are driven to rotate respectively or synchronously by the rotation of the second motor 401 and the third motor;
the first cylindrical mirror 405 is disposed on an end surface of the first rotating cylinder 403 away from the first auxiliary gear 408, and the second cylindrical mirror 406 is disposed on an end surface of the second rotating cylinder 404 away from the second auxiliary gear 409; the first cylindrical mirror 405 and the second cylindrical mirror 406 are driven to synchronously or respectively rotate by the rotation of the first rotating cylinder 403 and the second rotating cylinder 404, so that the rotation of two cylindrical mirrors in a cylindrical mirror pair is independently controlled, and astigmatism compensation is realized by a cylindrical mirror astigmatism synthesis formula.
Referring to fig. 4 or 5, the optometry module is an existing component, which specifically includes; the system comprises an eye refraction objective measuring subsystem, an eye refraction correcting subsystem, an eyeball positioning subsystem, a subjective visual function testing subsystem and a binocular automatic positioning and tracking mechanism, wherein all the systems are mutually matched and combined to form an optometry device;
the human eye refractive objective measurement subsystem comprises a near-infrared beacon light source 9, a collimating objective lens 10, a reflecting mirror 12, a second spectroscope 13, a first spectroscope 5, a first relay telescope 3, a second relay telescope 6 and a wavefront sensor 7, the human eye refractive correction subsystem comprises a first relay telescope 3 and a cylindrical mirror pair 4, the eyeball positioning subsystem comprises a pupil imaging device 2, and the subjective visual function test subsystem comprises a visual target display device 8 and a visual target objective lens 11; it is noted that the human eye refractive objective measurement subsystem and the human eye refractive correction subsystem share the first relay telescope 3;
the cylindrical mirror pair 4 is arranged at the conjugate position of the pupil of the human eye 1, and light emitted by the near-infrared beacon light source 9 is collimated by the collimating objective lens 10, reflected by the second beam splitter 13 and the first beam splitter 5, and enters the human eye 1 through the cylindrical mirror pair 4, the first relay telescope 3 and the pupil imaging device 2; the light reflected by the fundus of the human eye 1 enters a wavefront sensor 7 through a pupil imaging device 2, a first relay telescope 3, a cylindrical lens pair 4, a first spectroscope 5 and a second relay telescope 6 to objectively measure the human eye refractive error (defocusing, astigmatism and astigmatism axial directions); according to the measured human eye refractive error, the distance between two lenses of the first relay telescope 3 along the optical axis is changed to compensate the defocusing of the human eye, the cylindrical lens pair 4 is rotated around the optical axis to compensate the astigmatism of the human eye, after the compensation of the human eye refractive error is completed, the sighting target display device 8 displays a sighting target of a specific type, and the human eye 1 observes the sighting target displayed on the sighting target display device 8 through the first relay telescope 3, the cylindrical lens pair 4, the first spectroscope 5, the second spectroscope 13, the reflecting mirror 12 and the sighting target objective 11.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A focusing and astigmatism compensation mechanism, characterized in that: comprises a driving component, a guide component and a sliding plate; the sliding plate is matched with the guide assembly, the sliding plate can freely move on the guide assembly, the driving assembly is connected with the guide assembly, and the driving assembly drives the sliding plate to move on the guide assembly.
2. A focusing and astigmatism compensation mechanism according to claim 1, wherein: the guide assembly is a guide rail groove and a guide rail; the driving assembly comprises a first motor, a pulley block and a traction rope; the guide rail groove is arranged below the sliding plate, the guide rail groove is matched with the guide rail, and the guide rail groove can freely slide on the guide rail; the pulley block and the first motor are arranged below the guide rail, the traction rope is matched with the pulley block and then is connected with the output end of the first motor and the guide rail groove respectively, and the guide rail groove is driven to slide on the guide rail surface in the radial direction through the rotation of the first motor, so that the sliding plate can slide left and right on the plane.
3. A focusing and astigmatism compensation mechanism according to claim 2, wherein: the hauling cable is one or more of a steel wire, a steel rope and a chain.
4. A focusing and astigmatism compensation mechanism according to claim 3, wherein: the cylindrical mirror is characterized by also comprising a motor assembly, a cylindrical mirror pair and a rotating cylinder assembly; the rotating cylinder assembly comprises 2 rotating cylinders coaxially arranged, the motor assembly drives each rotating cylinder to coaxially rotate, and the cylindrical mirror pair is arranged in the rotating cylinders.
5. A focusing and astigmatism compensation mechanism according to claim 4, wherein: the motor assembly comprises a second motor and a third motor, and the rotating cylinder assembly comprises a first rotating cylinder and a second rotating cylinder; the cylindrical mirror pair comprises a first cylindrical mirror and a second cylindrical mirror;
the output ends of the second motor and the third motor are respectively provided with a rotating gear, the first rotating cylinder and the second rotating cylinder are coaxially arranged, the first rotating cylinder is sleeved in the second rotating cylinder, one end of the first rotating cylinder is provided with a first auxiliary gear, and the second rotating cylinder is provided with a second auxiliary gear on the end face close to the second auxiliary gear.
6. A focusing and astigmatism compensation mechanism according to claim 5, wherein: the first auxiliary gear and the second auxiliary gear are both arranged perpendicular to the wall surfaces of the first rotating cylinder and the second rotating cylinder;
the first auxiliary gear is meshed with a rotating gear of the second motor, the second auxiliary gear is meshed with a rotating gear of the third motor, and the first rotating cylinder and the second rotating cylinder are driven to rotate respectively or synchronously through rotation of the second motor and the third motor.
7. A focusing and astigmatism compensation mechanism according to claim 6, wherein: the first cylindrical mirror is arranged on the end face, far away from the first auxiliary gear, of the first rotating cylinder, and the second cylindrical mirror is arranged on the end face, far away from the second auxiliary gear, of the second rotating cylinder; the first cylindrical mirror and the second cylindrical mirror are driven to synchronously or respectively rotate through the rotation of the first rotating cylinder and the second rotating cylinder.
8. The utility model provides an accurate optometry device of subjective and objective integral type which characterized in that: the focusing and astigmatism compensation mechanism comprises an optometry module and the focusing and astigmatism compensation mechanism of any one of claims 1-7; and the focusing and astigmatism compensation mechanism is used for assisting in adjusting the focal length and the astigmatism in the optometry module.
9. The subjective and objective integrated precision optometry device according to claim 8, wherein: the system comprises an eye refraction objective measuring subsystem, an eye refraction correcting subsystem, an eyeball positioning subsystem, a subjective visual function testing subsystem and a binocular automatic positioning and tracking mechanism, wherein all the systems are mutually matched and combined to form an optometry device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120561949.4U CN216221411U (en) | 2021-03-18 | 2021-03-18 | Focusing and astigmatism compensation mechanism and subjective and objective integrated precise optometry device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120561949.4U CN216221411U (en) | 2021-03-18 | 2021-03-18 | Focusing and astigmatism compensation mechanism and subjective and objective integrated precise optometry device |
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| CN216221411U true CN216221411U (en) | 2022-04-08 |
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| CN202120561949.4U Active CN216221411U (en) | 2021-03-18 | 2021-03-18 | Focusing and astigmatism compensation mechanism and subjective and objective integrated precise optometry device |
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| CN (1) | CN216221411U (en) |
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- 2021-03-18 CN CN202120561949.4U patent/CN216221411U/en active Active
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Address after: 313100 floor 2, building 13, Changxing National Science and Technology Park, No. 669, Gaotie railway, Taihu street, Changxing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang aizhitong Medical Technology Co.,Ltd. Address before: 313100 3rd floor, building 2, building 13, Changxing National Science and Technology Park, 669 high speed railway, Taihu street, Changxing County, Huzhou City, Zhejiang Province Patentee before: CHANGXING AIZHITONG MEDICAL TECHNOLOGY Co.,Ltd. |
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Denomination of utility model: A focusing and astigmatism compensation mechanism and a subjective and objective integrated precision optometry device Effective date of registration: 20231227 Granted publication date: 20220408 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Huzhou Changxing sub branch Pledgor: Zhejiang aizhitong Medical Technology Co.,Ltd. Registration number: Y2023980073569 |
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