CN109602389B - Modularized optical measurement system and optometry device - Google Patents
Modularized optical measurement system and optometry device Download PDFInfo
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- CN109602389B CN109602389B CN201811549660.XA CN201811549660A CN109602389B CN 109602389 B CN109602389 B CN 109602389B CN 201811549660 A CN201811549660 A CN 201811549660A CN 109602389 B CN109602389 B CN 109602389B
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- diopter
- ring
- cornea
- measurer
- meier
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
Abstract
The invention discloses a modularized optical measuring system, wherein the upper surface of an installation base plate is flat, and the upper surface of the installation base plate is detachably and fixedly provided with structures such as a cornea measurer, a diopter measurer, a Meier ring, a fog target, an illuminating device and the like; a spectroscope, a beam splitting prism and a compensating mirror are sequentially arranged on the light path of the Meier ring and the diopter measurer; the light entering from the Meier ring enters the corneal measurer through the spectroscope; the light of the fog-view target enters the Meier ring through the fog-view reflector and the spectroscope; the utility model discloses a set up the installation base plate, including illuminator, reflector and spectroscope, illuminator, diopter caliber, mounting plate, the installation base plate is equipped with the installation base plate.
Description
Technical Field
The invention relates to the technical field of computer optometry, in particular to a modular optical measuring system. In addition, the invention also relates to an optometry device.
Background
The computer optometry instrument is an ophthalmologic examination instrument widely used, the light path composition is complex, and the installation of optical parts needs to be finely adjusted in the assembling process so as to ensure the stability of the light path and the accuracy of measurement. At present, most of traditional computer optometry instruments adopt a simple integrated arrangement mode, all parts are assembled on an installation frame, the installation frame is of an integrated structure, installation positions of all the parts are arranged on the installation frame, the positions of all the parts are uniquely determined, light modulation is limited, and errors caused by part manufacturing procedures and systematic errors in assembly cannot be well compensated through fine tuning; errors or position deviation of each node part in the optical path can cause the performance of the whole instrument to be reduced, and the design requirement of the whole optical path is difficult to meet.
For those skilled in the art, how to improve the precision of the optical path and reduce the assembly error is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a modularized optical measurement system, which is adjusted in the assembling process through a detachable and fixed structure, improves the precision of an optical path, and reduces the assembling error, and the specific scheme is as follows:
a modularized optical measurement system comprises an installation bottom plate with a flat upper surface, wherein a cornea measurer, a diopter measurer, a Meier ring, a fog target and an illuminating device are detachably and fixedly installed on the upper surface of the installation bottom plate;
a spectroscope, a beam splitter prism and a compensating mirror are sequentially arranged on refraction measuring light paths of the Meier ring and the diopter measurer;
light entering from the Meier ring enters the keratometer through the spectroscope;
the light of the fog target enters the Meier ring through the fog reflector and the spectroscope;
the light of the illuminating device enters the Meier ring through the reflecting mirror and the spectroscope.
Optionally, the mounting base plate is provided with a threaded hole, the cornea measurer, the diopter measurer, the meier ring, the fog target, the lighting device, the spectroscope, the beam splitter prism, the compensation mirror, the fog reflector and the reflector are respectively provided with an assembling plate at the bottom, the assembling plates are connected with the mounting base plate in a matched manner through screws, and the aperture of the through hole in the mounting base plate is larger than the size of the screw.
Optionally, a refraction measuring optical path between the meier ring and the diopter measurer is a straight line, and a cornea measuring optical path between the meier ring and the cornea measurer, a fog optical path between the meier ring and the fog target, and a fog optical path between the fog target and the lighting device are broken lines; and the diopter measurer and the fog target are positioned on the same side.
Optionally, the diopter measurer comprises a diopter ring seat fixed on the mounting base plate, a diopter telescope tube and a diopter imaging tube are respectively movably mounted at two ends of the diopter ring seat, a telescope system cemented mirror assembly is mounted on the diopter telescope tube, a diopter CMOS assembly is mounted on the diopter imaging tube, and an array microlens is fixedly mounted in the middle of an inner cavity of the diopter ring seat.
Optionally, the refractive telescope tube and the refractive ring seat, and the refractive imaging tube and the refractive ring seat are inserted in a sliding manner, and are pressed and fixed by refractive locking screws arranged on the side wall of the refractive ring seat.
Optionally, the cornea measurer includes a cornea ring seat fixed on the mounting base plate, two ends of the cornea ring seat are respectively provided with a cornea telescope column and a cornea imaging column, the cornea telescope column is provided with a cornea cemented lens assembly, and the cornea imaging column is provided with a cornea COMS assembly and a cornea microlens.
Optionally, the corneal ring base and the corneal telescope tube, and the corneal ring base and the corneal imaging tube are inserted in a sliding manner, and are fixed by pushing with corneal locking screws arranged on the side wall of the corneal ring base.
The invention also provides an optometry device comprising a modular optical measurement system as described in any one of the above.
The invention provides a modularized optical measuring system, wherein the upper surface of an installation base plate is flat, and the upper surface of the installation base plate is detachably and fixedly provided with structures such as a cornea measurer, a diopter measurer, a Meier ring, a fog target, an illuminating device and the like; a spectroscope, a beam splitting prism and a compensating mirror are sequentially arranged on the light path of the Meier ring and the diopter measurer; the light entering from the Meier ring enters the corneal measurer through the spectroscope; the light of the fog-view target enters the Meier ring through the fog-view reflector and the spectroscope; the utility model discloses a set up the installation base plate, including illuminator, reflector and spectroscope, illuminator, diopter caliber, mounting plate, the installation base plate is equipped with the installation base plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an isometric view of a modular optical measurement system provided by the present invention;
FIG. 2 is a top view of a modular optical measurement system provided by the present invention;
FIG. 3 is a cross-sectional view of one embodiment of a diopter gauge;
fig. 4 is a sectional view of the keratometer.
The figure includes:
the device comprises a mounting base plate 1, a cornea measurer 2, a cornea ring seat 201, a cornea telescope tube 202, a cornea imaging tube 203, a cornea plywood assembly 204, a cornea CMOS assembly 205, a cornea micro lens 206, a cornea locking screw 207, a diopter measurer 3, a compensating mirror 31, a refraction ring seat 201, a refraction telescope tube 302, a refraction imaging tube 303, a telescope system plywood assembly 304, a refraction CMOS assembly 305, an array micro lens 306, a refraction locking screw 307, a Meier ring 4, a fog target 5, a fog reflector 51, an illuminating device 6, a reflector 61, a spectroscope 7 and a beam splitter prism 8.
Detailed Description
The core of the invention is to provide a modular optical measurement system, which is adjusted in the assembly process through a detachable and fixed structure, so that the precision of an optical path is improved, and the assembly error is reduced.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the modular optical measurement system of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of an axis measurement structure of a modular optical measurement system provided by the present invention, and fig. 2 is a top view of the modular optical measurement system provided by the present invention, wherein a dotted line a represents a refraction measurement optical path, B represents a cornea measurement optical path, C represents a fog optical path, and D represents an illumination optical path; the modular optical measuring system comprises a mounting base plate 1 with a flat upper surface, wherein the upper surface of the mounting base plate 1 is preferably a smooth plane; the upper surface of the mounting base plate 1 is detachably and fixedly provided with components such as a cornea measurer 2, a diopter measurer 3, a Meier ring 4, a fog target 5 and a lighting device 6, each component is independently fixed with the mounting base plate 1, the mounting frame assembly component arranged on the mounting base plate 1 is not used, the relative position of each component can be independently adjusted, and the components and the mounting base plate 1 are mutually fixed after the optical path is accurately adjusted.
The diopter measuring device is characterized in that a spectroscope 7, a beam splitter prism 8 and a compensating mirror 31 are sequentially arranged on the diopter measuring light path of the Meier ring 4 and the diopter measuring device 3, light entering from the Meier ring 4 sequentially passes through the spectroscope 7, the beam splitter prism 8 and the compensating mirror 31 to enter the diopter measuring device 3, and all parts on the diopter measuring light path and the mounting base plate 1 are also detachably fixed.
The light entering from the Meier ring 4 enters the cornea measurer 2 through the spectroscope 7, the cornea measuring light path comprises the Meier ring 4, the spectroscope 7 and the cornea measurer 2, and all the components are detachably and fixedly connected with the installation bottom plate 1; as shown in fig. 2, the beam splitter 7 includes at least two lenses, and light incident from the meier ring 4 is transmitted or reflected by the beam splitter 7, and a part of the light enters the diopter measurer 3, and the other part of the light enters the keratometer 2, where the diopter measurer 3 is used for measuring diopter and the keratometer 2 is used for measuring corneal variation.
The light of the fog target 5 sequentially passes through the fog reflector 51 and the spectroscope 7 to enter the Meier ring 4, the fog light path comprises the fog target 5, the fog reflector 51, the spectroscope 7 and the Meier ring 4, all the parts are detachably fixed with the mounting base plate 1, the fog target 5 provides an observation object for a measured person, and the measured person can see the target of the fog target 5.
The light of the lighting device 6 enters the Meier ring 4 through the reflecting mirror 61 and the spectroscope 7; the illumination path includes an illumination device 6, a mirror 61, a beam splitter 7 and a meyer ring 4 for providing illumination.
Because structures such as the cornea caliber 2 and the diopter caliber 3 are independent and detachable structures with the mounting base plate, the requirement on the processing precision of the mounting base plate 1 is low, and only the upper surface is guaranteed to be flat, when other components are assembled on the mounting base plate 1, each component can be subjected to fine adjustment, the position of each component is accurate and then fixed relative to the mounting base plate 1, the precision of a light path can be improved, and the assembly error is reduced.
Each optical path component forms an independent module, and collimation adjustment is carried out during integration, and the optical path components are assembled according to the following steps:
step one, a refraction measuring light path is taken as a reference to form a system central line, a light splitting prism 8, a light splitting mirror 7, a Meier ring 4, a diopter measurer 3 and a compensating mirror 31 are arranged on an installation bottom plate 1 to form the refraction measuring light path, and collimation is adjusted through a light modulation detection device.
And step two, an illumination light path is formed by installing the illumination device 6 and the reflector 61, and the light source is lightened to adjust collimation, so that the diopter measurer 3 can receive a complete and clear image.
And step three, installing the cornea measurer 2, and adjusting collimation to receive a complete and clear image.
And step four, installing the fog-viewing target 5 and the fog-viewing reflector 51 to form a fog-viewing light path, and adjusting collimation to observe a clear fog-viewing target through a measurement window of the Meier ring 4.
On the basis of the scheme, the installation base plate 1 is provided with threaded holes, the bottoms of the cornea measurer 2, the diopter measurer 3, the Meier ring 4, the fog target 5, the illuminating device 6, the spectroscope 7, the beam splitter prism 8, the compensating mirror 31, the fog reflector 51 and the reflector 61 are respectively provided with an assembly plate, the assembly plates are arranged in a penetrating way, and through holes in the assembly plates correspond to through holes arranged at corresponding positions on the installation base plate 1 and are matched and connected with the installation base plate 1 through screws; because the aperture of the through hole on the mounting base plate 1 is larger than the size of the screw, the screw can be adjusted in the through hole of the mounting base plate 1, so that the relative position of each part and the mounting base plate 1 is changed, and after the position is determined, the nut and the screw are matched with each other and screwed.
As shown in fig. 2, the present invention provides a preferred arrangement in which the light path between the meier ring 4 and the diopter measurer 3 is a straight line, and the light incident from the meier ring 4 is transmitted into the diopter measurer 3 through the spectroscope 7 and the light splitting prism 8. The cornea measuring light path between the Meier ring 4 and the cornea measurer 2, the fog light path between the Meier ring 4 and the fog target 5, and the lighting light path between the fog target 5 and the lighting device 6 are broken lines; the cornea measurer 2, the fog-vision target 5 and the lighting device 6 are respectively arranged at two sides of the diopter measurer 3, the diopter measurer 3 and the fog-vision target 5 are positioned at the same side, and the lighting device 6 is independently positioned at one side.
On the basis of any one of the above technical solutions and their combination, as shown in fig. 3, the diopter measurer 3 of the present invention is a sectional view of a specific structure, and includes a diopter ring seat 301 fixed on the installation base plate 1, wherein an installation channel is transversely arranged on the diopter ring seat 301, a diopter telescope column 302 and a diopter imaging column 303 are respectively movably installed at two ends of the diopter ring seat 301, and the diopter telescope column 302 and the diopter imaging column 303 can respectively move transversely relative to the diopter ring seat 301; a telescope system plywood assembly 304 is arranged on the refractive telescope column 302, a refractive CMOS assembly 305 is arranged on the refractive imaging column 303, an array micro-lens 306 is fixedly arranged in the middle of the inner cavity of the refractive ring seat 301, and the position of the array micro-lens 306 is kept fixed. The light rays pass through a telescope system cemented lens assembly 304 and an array microlens 306 in turn, and are detected and sensed by a refractive CMOS assembly 305. The lateral distance between the telescope system glued mirror assembly 304 and the refraction CMOS assembly 305 can be adjusted in the assembling process, the diopter measurer 3 can be independently adjusted, the difficulty of integrated optical modulation adjustment can be reduced, and the final assembly system error caused by component errors can be eliminated.
Preferably, the refractive telescope tube 302 and the refractive ring base 301, and the refractive imaging tube 303 and the refractive ring base 301 are slidably inserted into each other, and are tightly pressed and fixed by refractive locking screws 307 arranged on the side wall of the refractive ring base 301. The cylindrical side wall of the ring seat 301 is provided with a threaded hole, and the refractive locking screw 307 is in threaded connection with the threaded hole, and can be in contact with the side walls of the telescopic refractive lens barrel 302 and the refractive imaging lens barrel 303 to realize jacking fixation. In addition to the sliding insertion, a threaded connection may be used, as long as the lateral distance can be adjusted.
Accordingly, as shown in fig. 4, a cross-sectional view of the keratometer 2; the cornea measurer 2 comprises a cornea ring seat 201 fixed on a mounting base plate 1, wherein a cornea telescope lens barrel 202 and a cornea imaging lens barrel 203 are respectively arranged at two ends of the cornea ring seat 201, a cornea plywood assembly 204 is arranged on the cornea telescope lens barrel 202, a cornea COMS assembly 205 and a cornea microlens 206 are arranged on the cornea imaging lens barrel 203, and the distance between the cornea plywood assembly 204 and the cornea COMS assembly 205 can be adjusted. The cornea COMS assembly 205 and the cornea microlens 206 are respectively arranged at two ends of the cornea imaging lens barrel 203, and the positions of the two are relatively fixed.
The corneal ring base 201, the corneal telescope tube 202, the corneal ring base 201 and the corneal imaging tube 203 are inserted in a sliding manner, and are tightly pressed and fixed through corneal locking screws 207 arranged on the side wall of the corneal ring base 201. Similar to the adjustment mode of the diopter measurer 3, a threaded hole is formed in the cylindrical side wall of the corneal ring seat 201, and the corneal locking screw 207 is screwed with the threaded hole in a matched manner, so that the corneal locking screw can be inwards pressed against the outer walls of the corneal telescope column 202 and the corneal imaging column 203 to realize fixation.
The invention also provides an optometry device which comprises the modular optical measurement system and can achieve the same technical effect.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The modular optical measuring system is characterized by comprising a mounting base plate (1) with a flat upper surface, wherein a cornea measurer (2), a diopter measurer (3), a Meier ring (4), a fog target (5) and an illuminating device (6) are detachably and fixedly mounted on the upper surface of the mounting base plate (1);
a spectroscope (7), a beam splitter prism (8) and a compensating mirror (31) are sequentially arranged on a refraction measuring light path of the Meier ring (4) and the diopter measurer (3);
the light entering from the Meier ring (4) enters the keratometer (2) through the spectroscope (7);
the light of the fog-vision target (5) enters the Meier ring (4) through a fog-vision reflector (51) and the spectroscope (7);
the light of the lighting device (6) enters the Meier ring (4) through a reflecting mirror (61) and the spectroscope (7);
threaded holes are formed in the mounting base plate (1), the cornea measurer (2), the diopter measurer (3), the Meier ring (4), the fog target (5), the illuminating device (6), the spectroscope (7), the beam splitter prism (8), the compensating mirror (31), the fog reflector (51) and the reflector (61) are respectively provided with an assembling plate at the bottoms, the assembling plates are matched and connected with the mounting base plate (1) through screws, and the aperture of a through hole in the mounting base plate (1) is larger than the size of the screw;
forming a system central line by taking the refraction measuring optical path as a reference; the lighting device (6) and the reflector (61) are arranged to form a lighting light path, so that the diopter measurer (3) can receive a complete and clear image; installing the cornea measurer (2), adjusting collimation to form a cornea measuring light path, and receiving a complete and clear image; the fog-vision target (5) and the fog-vision reflector (51) are installed to form a fog-vision light path, and the clear fog-vision target can be observed through a measurement window of the Meier ring (4);
the diopter measurer (3) comprises a diopter ring seat (301) fixed on the mounting base plate (1), a diopter telescope tube (302) and a diopter imaging tube (303) are respectively movably mounted at two ends of the diopter ring seat (301), a telescope system plywood component (304) is mounted on the diopter telescope tube (302), a diopter CMOS component (305) is mounted on the diopter imaging tube (303), and an array micro lens (306) is fixedly mounted in the middle of an inner cavity of the diopter ring seat (301);
the refractive telescope lens barrel (302) and the refractive ring seat (301) as well as the refractive imaging lens barrel (303) and the refractive ring seat (301) are inserted in a sliding way and are tightly pressed and fixed through refractive locking screws (307) arranged on the side wall of the refractive ring seat (301);
the cornea measurer (2) comprises a cornea ring seat (201) fixed on the installation base plate (1), a cornea telescope lens barrel (202) and a cornea imaging lens barrel (203) are respectively installed at two ends of the cornea ring seat (201), a cornea plywood mirror assembly (204) is installed on the cornea telescope lens barrel (202), and a cornea CMOS assembly (205) and a cornea micro lens (206) are installed on the cornea imaging lens barrel (203).
2. The modular optical measuring system according to claim 1, characterized in that the dioptric measuring light path between the meier ring (4) and the diopter measurer (3) is a straight line, the corneal measuring light path between the meier ring (4) and the corneal measurer (2), the fogging light path between the meier ring (4) and the fogging target (5), and the fogging light path between the fogging target (5) and the lighting device (6) are broken lines; and the diopter measurer (3) and the fog target (5) are positioned on the same side.
3. The modular optical measurement system according to claim 2, wherein the corneal ring seat (201) and the corneal telescope barrel (202), the corneal ring seat (201) and the corneal imaging barrel (203) are slidably inserted into each other and are tightly fixed by a corneal locking screw (207) arranged on a side wall of the corneal ring seat (201).
4. Optometric instrument comprising a modular optical measurement system according to any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549660.XA CN109602389B (en) | 2018-12-18 | 2018-12-18 | Modularized optical measurement system and optometry device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549660.XA CN109602389B (en) | 2018-12-18 | 2018-12-18 | Modularized optical measurement system and optometry device |
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| CN109602389A CN109602389A (en) | 2019-04-12 |
| CN109602389B true CN109602389B (en) | 2022-05-17 |
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| CN110584591B (en) * | 2019-09-03 | 2024-04-30 | 佛山科学技术学院 | High-precision portable diopter detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2614626Y (en) * | 2003-05-18 | 2004-05-12 | 黄长征 | Multifuntion intraoperative refraction state detecting device for refractive operation |
| CN102715886B (en) * | 2012-06-21 | 2014-08-06 | 宁波明星科技发展有限公司 | Corneal curvature calculation method for computerized refractometer |
| CN104095610B (en) * | 2014-07-25 | 2017-01-11 | 上海展志光学仪器有限公司 | Optical system for measuring eyes diopter and cornea curvature radius of human |
| CN204744101U (en) * | 2015-06-18 | 2015-11-11 | 苏州四海通仪器有限公司 | Hand -held type independently looks force measuring device |
| CN204765562U (en) * | 2015-06-18 | 2015-11-18 | 苏州四海通仪器有限公司 | Optometry device of other central out of focus of measurable quantity |
| CN108020319A (en) * | 2016-10-31 | 2018-05-11 | 长春理工大学 | A kind of adjustable spectrometer shell of separate modular structure |
| CN108542346B (en) * | 2018-02-02 | 2021-01-01 | 中国科学院上海光学精密机械研究所 | Automatic shadow-testing optometry optical system |
| CN108294725A (en) * | 2018-03-14 | 2018-07-20 | 苏州兆乘四海通科技有限公司 | A kind of optometry unit of measurable crystalline lens adjusting force |
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