CN104116493A - Human eye diopter rotation wedge-shaped lens measurement device - Google Patents
Human eye diopter rotation wedge-shaped lens measurement device Download PDFInfo
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- CN104116493A CN104116493A CN201410412822.0A CN201410412822A CN104116493A CN 104116493 A CN104116493 A CN 104116493A CN 201410412822 A CN201410412822 A CN 201410412822A CN 104116493 A CN104116493 A CN 104116493A
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Abstract
The invention relates to a human eye diopter rotation wedge-shaped lens measurement device which comprises an objective lens device, a monitoring beam splitter device, a mist beam splitter device, a rotation wedge-shaped lens device, a small hole prism device and a base plate. The objective lens device comprises an objective lens fixing base, an objective lens cone, an objective lens and a wire ring; the monitoring beam splitter device comprises a monitoring beam splitter base and a monitoring beam splitter; the mist beam splitter device comprises a mist beam splitter base and a mist beam splitter; the small hole prism device comprises a small hole prism base, a small hole prism, a through connection small lens base and a through connection small lens; the rotation wedge-shaped lens device comprises a rotation wedge-shaped lens support, a motor, a rotation wheel, a rotation bearing, a belt, a wedge-shaped lens cone and a wedge-shaped lens. By means of the human eye diopter rotation wedge-shaped lens measurement device, the uniformity of a fundus scattering image is improved by rotating the wedge-shaped lens; on the premise that other structures of an original device are not changed, the accuracy and the stability of human eye diopter measurement can be greatly improved by additionally arranging the rotation wedge-shaped lens device.
Description
Technical field
The invention belongs to a kind of automatic refractor, be specifically related to a kind of human eye diopter rotary wedge mirror measuring device.
Background technology
Current automatic refractor, measuring when human eye, adopts servo-actuated cloud and mist figure to guide focusing mode conventionally, allows the optical axis of tested eyeball and the light shaft coaxle of instrument annulus sighting target optical system, accurately measures to realize diopter; But due to the flicker of pupil and the fine rotation of eyeball, can cause the optical axis deviation of optical axis instrument annulus sighting target optical system, thereby the precision of measuring is impacted.
Summary of the invention
The present invention measures when human eye in order to solve, due to the flicker of pupil and the fine rotation of eyeball, can cause the optical axis deviation of optical axis instrument annulus sighting target optical system, thereby the precision of measuring is impacted, and proposed the human eye diopter rotary wedge mirror measuring device that a kind of human eye diopter measurement Stability and veracity is good.
The technical solution used in the present invention: human eye diopter rotary wedge mirror measuring device, it comprises objective apparatus, supervision beam divider device, cloud and mist beam divider device, rotary wedge lens device, aperture prism apparatus and base plate,
Described objective apparatus comprises object lens holder, lens barrel, object lens and wire ring, wherein, described object lens holder is fixed on base plate, and described lens barrel one end is fixed in described object lens holder intracardiac, and described object lens are arranged on described lens barrel inside and are fixed by wire ring;
Described supervision beam divider device comprises supervision beam divider seat and monitors beam divider, wherein, described supervision beam divider seat is fixed on described base plate, and described supervision beam divider inclination 45 degree are fixed on described supervision beam divider seat inside, wherein monitor that beam divider is positioned at the level projection scope of described object lens;
Described cloud and mist beam divider device comprises cloud and mist beam divider seat and cloud and mist beam divider, wherein, described cloud and mist beam divider seat be fixed on described base plate, be positioned at monitor beam divider seat directly over, described cloud and mist beam divider inclination 45 degree are fixed in described cloud and mist beam divider seat, and wherein cloud and mist beam divider is parallel with the minute surface that monitors beam divider;
Described aperture prism apparatus comprises aperture prism table, aperture prism, switching lenslet seat and switching lenslet, wherein, described aperture prism table is fixed on described base plate, described switching lenslet seat is fixed on aperture prism table, aperture prism is fixed in the region, right angle that switching lenslet seat surrounds with aperture prism table and is parallel with the minute surface of cloud and mist beam divider, wherein the hole, the centre of homology of aperture prism communicates with the centre of homology of switching lenslet seat, and switching lenslet is arranged on switching lenslet seat upper end and is positioned at the top, the centre of homology of switching lenslet seat;
Described rotary wedge lens device comprises rotary wedge mirror bearing, motor, swiveling wheel, swivel bearing, belt, wedge-shaped mirrors lens barrel and wedge-shaped mirrors, wherein, described rotary wedge mirror bearing is fixed on switching lenslet seat, motor is fixed on rotary wedge mirror bearing, the output shaft end of motor is connected with swiveling wheel by after rotary wedge mirror bearing, swivel bearing is fixed on rotary wedge mirror bearing, wedge-shaped mirrors lens barrel one end is connected with swivel bearing, swiveling wheel and wedge-shaped mirrors lens barrel pass through belt transmission, wedge-shaped mirrors is fixed on the lower end of the center cavity of wedge-shaped mirrors lens barrel, described wedge-shaped mirrors center is centered close to same axis with switching lenslet.
Further, described wedge-shaped mirrors is 4-8 degree with the angle of inclination of horizontal plane in wedge-shaped mirrors lens barrel, and its incline direction is consistent with cloud and mist beam divider incline direction.
The present invention compared with prior art its beneficial effect is: 1. the present invention is in the time carrying out the detection of human eye diopter, justify wedge-shaped mirrors rotation by driven by motor, annulus sighting target light is by rear generation deviation, the track of deviation light beam is a circle, light beam can be redirect to wedge-shaped mirrors specifies within the scope of the cone angle of 2 times of deflection angles, thereby can fill up the scope in trace circle, form a taper seat, the optical axis that causes because of the flicker of pupil and the fine rotation of eyeball and the skew problem of annulus sighting target systematic optical axis are solved, strengthen the alignment of tested human eye's visual axis and automatic refractor systematic optical axis, 2. the present invention rotates by wedge-shaped mirrors, has improved the uniformity of optical fundus dispersion image, 3. the present invention is simple in structure, is not changing under the prerequisite of original other structure of device, by increasing rotary wedge lens device, can greatly improve human eye diopter measurement Stability and veracity.
Brief description of the drawings
Fig. 1 is structure side view of the present invention;
Fig. 2 is the cutaway view along A-A hatching in Fig. 1;
Fig. 3 is the structural representation of objective apparatus;
Fig. 4 is the structural representation that monitors beam divider device;
Fig. 5 is the structural representation of cloud and mist beam divider device;
Fig. 6 is the structural representation of aperture prism apparatus;
Fig. 7 is the structural representation of rotary wedge lens device;
Fig. 8 is the cutaway view along B-B hatching in Fig. 2.
Detailed description of the invention
Human eye diopter rotary wedge mirror measuring device, as Fig. 2, it comprises objective apparatus 1, monitor beam divider device 2, cloud and mist beam divider device 3, rotary wedge lens device 4, aperture prism apparatus 5, annulus sighting target system and device 6, diopter measurement system and device 7 and base plate 30, human eye 13 is observed at object lens 10 dead aheads of objective apparatus 1, as Fig. 3, objective apparatus 1 comprises object lens holder 8, lens barrel 9, object lens 10 and wire ring, wherein, object lens holder 8 is fixed on base plate 30, lens barrel 9 one end are fixed in object lens holder 8 intracardiac by screw 11, object lens 10 are arranged on lens barrel 9 inside and are fixed by wire ring, wherein wire ring can also be replaced by pressure cylinder or glue, as Fig. 4, monitor that beam divider device 2 comprises supervision beam divider seat 14 and monitors beam divider 15, wherein, monitor that beam divider seat 14 is fixed on base plate 30, monitor beam divider 15 tilt 45 degree glue be fixed on monitor beam divider seat 14 inside, wherein monitor that beam divider 15 is positioned at the level projection scope of object lens 10, as Fig. 5, cloud and mist beam divider device 3 comprises cloud and mist beam divider seat 16 and cloud and mist beam divider 17, wherein, cloud and mist beam divider seat 16 be fixed on base plate 30, be positioned at monitor beam divider seat 14 directly over, the cloud and mist beam divider 17 45 degree glue that tilts is fixed in cloud and mist beam divider seat 16, and wherein cloud and mist beam divider 17 is parallel with the minute surface that monitors beam divider 15, as Fig. 6, aperture prism apparatus 5 comprises aperture prism table 26, aperture prism 27, switching lenslet seat 28 and switching lenslet 29, wherein, aperture prism table 26 is fixed on base plate 30, switching lenslet seat 28 use glue are fixed on aperture prism table 26, aperture prism 27 use glue are fixed in the region, right angle that switching lenslet seat 28 surrounds with aperture prism table 26 and are parallel with the minute surface of cloud and mist beam divider 17, wherein the hole, the centre of homology of aperture prism 27 communicates with the centre of homology of switching lenslet seat 28, switching lenslet 29 use glue are fixed on switching lenslet seat 28 upper ends and are positioned at the top, the centre of homology of switching lenslet seat 28, as Fig. 7 with as Fig. 8, rotary wedge lens device 4 comprises rotary wedge mirror bearing 18, motor 19, swiveling wheel 20, swivel bearing 21, belt 22, wedge-shaped mirrors lens barrel 23 and wedge-shaped mirrors 24, wherein, rotary wedge mirror bearing 18 is fixed on switching lenslet seat 28, motor 19 is fixed on rotary wedge mirror bearing 18, the output shaft end of motor 19 is connected with swiveling wheel 20 by rotary wedge mirror bearing 18 is rear, swivel bearing 21 is fixed on rotary wedge mirror bearing 18, wedge-shaped mirrors lens barrel 23 one end are connected with swivel bearing 21, swiveling wheel 20 passes through belt 22 transmissions with wedge-shaped mirrors lens barrel 23, wedge-shaped mirrors 24 is fixed on the lower end of the center cavity of wedge-shaped mirrors lens barrel 23, wedge-shaped mirrors 24 centers are centered close to same axis with switching lenslet 29.Wherein wedge-shaped mirrors 24 is 6 degree with the angle of inclination of horizontal plane in wedge-shaped mirrors lens barrel 23, and its incline direction is consistent with the incline direction of cloud and mist beam divider 17.As Fig. 2, provide optics sighting target the is observed survey centrage of annulus sighting target system and device 6 and the centrage in switching lenslet 29 holes for guide people to be positioned at same plane, and can project in the hole of annulus sighting target system and device 6 through the deviation light beam of switching lenslet 29.The centrage of diopter measurement system and device 7 and the centrage of annulus sighting target system and device 6 for human eye diopter measurement are positioned at same plane, by making human eye's visual axis meet the measurement requirement of diopter measurement system and device 7 at annulus sighting target system and device 6 to the guiding of human eye.
Operation principle: when automatic refractor carries out the detection of human eye diopter, annulus sighting target optical system produces annulus sighting target, be transmitted on human eye retina, through retinal reflex, by diopter measurement system imaging, on CCD, the retinal reflex image that CCD obtains is an annulus, different dioptric human eyes, circle diameter is in different size, can calculate the diopter of human eye according to annulus size.
Claims (2)
1. human eye diopter rotary wedge mirror measuring device, it comprises objective apparatus, monitors beam divider device, cloud and mist beam divider device, rotary wedge lens device, aperture prism apparatus and base plate, it is characterized in that:
Described objective apparatus comprises object lens holder, lens barrel, object lens and wire ring, wherein, described object lens holder is fixed on base plate, and described lens barrel one end is fixed in described object lens holder intracardiac, and described object lens are arranged on described lens barrel inside and are fixed by wire ring;
Described supervision beam divider device comprises supervision beam divider seat and monitors beam divider, wherein, described supervision beam divider seat is fixed on described base plate, and described supervision beam divider inclination 45 degree are fixed on described supervision beam divider seat inside, wherein monitor that beam divider is positioned at the level projection scope of described object lens;
Described cloud and mist beam divider device comprises cloud and mist beam divider seat and cloud and mist beam divider, wherein, described cloud and mist beam divider seat be fixed on described base plate, be positioned at monitor beam divider seat directly over, described cloud and mist beam divider inclination 45 degree are fixed in described cloud and mist beam divider seat, and wherein cloud and mist beam divider is parallel with the minute surface that monitors beam divider;
Described aperture prism apparatus comprises aperture prism table, aperture prism, switching lenslet seat and switching lenslet, wherein, described aperture prism table is fixed on described base plate, described switching lenslet seat is fixed on aperture prism table, aperture prism is fixed in the region, right angle that switching lenslet seat surrounds with aperture prism table and is parallel with the minute surface of cloud and mist beam divider, wherein the hole, the centre of homology of aperture prism communicates with the centre of homology of switching lenslet seat, and switching lenslet is arranged on switching lenslet seat upper end and is positioned at the top, the centre of homology of switching lenslet seat;
Described rotary wedge lens device comprises rotary wedge mirror bearing, motor, swiveling wheel, swivel bearing, belt, wedge-shaped mirrors lens barrel and wedge-shaped mirrors, wherein, described rotary wedge mirror bearing is fixed on switching lenslet seat, motor is fixed on rotary wedge mirror bearing, the output shaft end of motor is connected with swiveling wheel by after rotary wedge mirror bearing, swivel bearing is fixed on rotary wedge mirror bearing, wedge-shaped mirrors lens barrel one end is connected with swivel bearing, swiveling wheel and wedge-shaped mirrors lens barrel pass through belt transmission, wedge-shaped mirrors is fixed on the lower end of the center cavity of wedge-shaped mirrors lens barrel, described wedge-shaped mirrors center is centered close to same axis with switching lenslet.
2. human eye diopter rotary wedge mirror measuring device according to claim 1, is characterized in that: described wedge-shaped mirrors is 4-8 degree with the angle of inclination of horizontal plane in wedge-shaped mirrors lens barrel, and its incline direction is consistent with cloud and mist beam divider incline direction.
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| CN201410412822.0A CN104116493B (en) | 2014-08-21 | 2014-08-21 | Human eye diopter rotary wedge mirror measuring device |
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| CN201410412822.0A CN104116493B (en) | 2014-08-21 | 2014-08-21 | Human eye diopter rotary wedge mirror measuring device |
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| CN104116493B CN104116493B (en) | 2015-12-02 |
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| EP1767144A1 (en) * | 2005-09-27 | 2007-03-28 | Nidek Co., Ltd | Eye refractive power measurement apparatus |
| CN101248983A (en) * | 2008-04-08 | 2008-08-27 | 上海理工大学 | Compensating mechanism of human eyes wave-front optical aberration measurement and correct system |
| CN101646382A (en) * | 2007-02-14 | 2010-02-10 | 眼科研究所有限公司 | Characterization of optical systems |
| CN202051688U (en) * | 2010-11-29 | 2011-11-30 | 沈阳理工大学 | Astigmatism objective refractometer based on wave-front aberration |
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2014
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS59500163A (en) * | 1982-02-12 | 1984-02-02 | クリユ−ガ−，ヘルム−ト | Method and device for measuring refractive power |
| JPH0231728A (en) * | 1988-07-22 | 1990-02-01 | Canon Inc | Ophthalmic measuring apparatus |
| CN2314345Y (en) * | 1997-11-12 | 1999-04-14 | 谭自成 | Full functional instrument for surveying plotting instrument |
| US20020159030A1 (en) * | 2000-05-08 | 2002-10-31 | Frey Rudolph W. | Apparatus and method for objective measurement of optical systems using wavefront analysis |
| WO2003020167A2 (en) * | 2001-08-31 | 2003-03-13 | Adaptive Optics Associates, Inc. | Ophthalmic instruments capable of measuring aberrations |
| US20050219461A1 (en) * | 2004-03-30 | 2005-10-06 | Kabushiki Kaisha Topcon | Opthalmological apparatus |
| EP1767144A1 (en) * | 2005-09-27 | 2007-03-28 | Nidek Co., Ltd | Eye refractive power measurement apparatus |
| CN101646382A (en) * | 2007-02-14 | 2010-02-10 | 眼科研究所有限公司 | Characterization of optical systems |
| CN101248983A (en) * | 2008-04-08 | 2008-08-27 | 上海理工大学 | Compensating mechanism of human eyes wave-front optical aberration measurement and correct system |
| CN202051688U (en) * | 2010-11-29 | 2011-11-30 | 沈阳理工大学 | Astigmatism objective refractometer based on wave-front aberration |
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| CN104116493B (en) | 2015-12-02 |
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Inventor after: Yan Jie Inventor after: Chen Youhua Inventor after: Guo Zhiyong Inventor after: Zhao Junqi Inventor after: Du Xiaojun Inventor after: Guo Yanwen Inventor after: Li Zhiwei Inventor after: Zhang Suzhen Inventor before: Yan Jie Inventor before: Guo Zhiyong Inventor before: Chen Youhua Inventor before: Zhao Junqi Inventor before: Du Xiaojun Inventor before: Guo Yanwen Inventor before: Zhang Suzhen |
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Free format text: CORRECT: INVENTOR; FROM: YAN JIE GUO ZHIYONG CHEN YOUHUA ZHAO JUNQI DU XIAOJUN GUO YANWEN ZHANG SUZHEN TO: YAN JIE CHEN YOUHUA GUO ZHIYONG ZHAO JUNQI DU XIAOJUN GUO YANWEN LI ZHIWEI ZHANG SUZHEN |
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Address after: 030051 No. 0301 and 0402, building 1, No. 19, Chuangye street, Taiyuan Xuefu Park, comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee after: Taiyuan Zhongbei Xinyuan Technology Center (Co.,Ltd.) Address before: 030051 photoelectric factory of Zhongbei University, No. 3 Xueyuan Road, Jiancaoping District, Taiyuan City, Shanxi Province Patentee before: TAIYUAN XINYUAN HIGH TECH CENTER NORTH University OF CHINA |