CN104068826A - Adjustable eye detecting device - Google Patents
Adjustable eye detecting device Download PDFInfo
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- CN104068826A CN104068826A CN201410350831.1A CN201410350831A CN104068826A CN 104068826 A CN104068826 A CN 104068826A CN 201410350831 A CN201410350831 A CN 201410350831A CN 104068826 A CN104068826 A CN 104068826A
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- lighting cylinder
- sighting target
- parallel
- convex lens
- snoot
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- 238000001514 detection method Methods 0.000 claims abstract description 22
- 210000000576 arachnoid Anatomy 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 235000012489 doughnuts Nutrition 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 206010047513 Vision blurred Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004438 eyesight Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 208000022873 Ocular disease Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Eye Examination Apparatus (AREA)
Abstract
The invention discloses an adjustable eye detecting device. According to the eye detecting device, a convex lens is sleeved with a lighting cylinder; an adjustable cover is adopted to control the convex lens for axial movement; a central hole is formed in the center of the convex lens; a video camera is mounted inside the central hole; a parallel light-focusing cover of parallel light and a light source are connected to the rear side of the lighting cylinder in a sealing manner; a sighting mark is arranged between the lighting cylinder and the parallel light-focusing shield. The eye detecting device can alter different positions of the sighting mark projecting on an eye, can realize the aims of dynamic adjustment and dynamic detection, as well as automatic detection, so as to provide sufficient detection standards for correct detection, can determine the maximum grade, the minimum grade and states according to the shading transition condition, and calls a data base for comparison to determine the healthy or sick degree of patients' eyes.
Description
Technical field
The present invention relates to the testing tool in ophthalmic medical technical field, particularly a kind ofly by controlling sighting target projection on eyes, change the device that gathers eye reflections information and then disease of eye is detected.
Background technology
The instrument detecting for eye at present, mostly adopt is by detecting instruments such as myopia or astigmatism, for example at ophthalmology, there is the machine of professional identification detecting eye diopter, also there is this machine in the place of generally joining mirror in optometry, lower jaw is placed on to the position of appointment, by an aperture, allows you see a secondary little picture, the distance that machine can carry out picture automatically regulates, so that blur-free imaging on retina, also can measure in this way the diopter of eyes.Yet, for the personnel that have ocular disease, when eyes only have local diopter abnormal, be difficult to detect and judgement by dioptric instrument is correct, even correct by dioptric eyes, still there is the fuzzy situation of exerting all one's strength, for example, in the situation that put on the vision eye glasses after correction, in certain angular field of view, have clouded glass sense, the sensation of this ground-glass-like is exactly eyes local curvature abnormal phenomena conventionally.
The method of current diagnosis blurring of vision is to rely on ophthalmologist's observation and supervisor's judgement mostly, for example, by doing examination of ocular fundus, sees whether optical fundus has pathological changes to affect one's power of vision.Due to the state of an illness of eye curvature caused by abnormal blurring of vision, by doctor's artificial observation, there is the low and erroneous judgement factor of efficiency.
Have some instruments for replacing manually distinguishing that eye curvature is abnormal, be in fact by video camera catch eye reflections should rule pattern, by judging that the difference of reflection graphic patterns and actual rule pattern judges whether eyes curvature anomalies occurs.In order to reach best detection effect, need to project to eyes the sighting target projection of (normally chequered with black and white), yet this quasi-instrument is in the inadequate problem of the precision of the marginal area of color change, even still have and may have two kinds of different testing results when for example normal eye is detected.In fact, existing eye curvature abnormality detection instrument is in detecting eyes process, it is a kind of Static Detection instrument, the projected position of cursor on eyes is relatively fixing, distance and the projection definition due to cursor, thrown in all can affect its accuracy of detection, existing Static Detection instrument is thrown in by replacing apart from the unusual trouble of time operation, after when instrument adjustment process, if position of human eye and distance change, testing result also changes, front and back are detected and are just lacked comparative, just need more repetition and longer detection time, efficiency is very low, and precision is not high.
Summary of the invention
The object of the invention is for existing, about the low and not high problem of precision of the abnormal detecting instrument ubiquity detection efficiency of eye curvature, provides a kind of eye detection device that can regulate.
For achieving the above object, adopt following technical scheme: a kind of adjustable type eye detection device, comprise support, lighting cylinder, light source and sighting target, in lighting cylinder, be set with a convex lens, at convex lens outward flange, be fixed with lens carrier, at the outward flange of lens carrier, be radially laid with axial slider; On the circumferential side wall at lighting cylinder middle part, be laid with the adjustment hole with axially parallel; Described each axial slider difference Matching installation is in each adjustment hole; Meanwhile, in lighting cylinder outside, being set with one, only can rotate can not axially movable adjustable ring, and the inwall of this adjustable ring is threaded with the outward flange of described each axial slider; Center at described convex lens is provided with centre bore, and video camera is installed in centre bore, between this video camera and center bore inner wall, has fit clearance, and video camera is fixed on lighting cylinder medial wall by support; Rear side at lighting cylinder is sealedly connected with the parallel snoot of directional light, and the focal position of the parallel snoot of directional light is provided with light source; Between described lighting cylinder and parallel snoot, be provided with sighting target; Described sighting target is that dark donut is set on dianegative, or arachnoid pattern, or interval bar shaped speckle.The sighting target groove that is provided with a side opening between described lighting cylinder and parallel snoot, described sighting target is movably installed in sighting target groove.At lighting cylinder, be fixed with support with parallel snoot outside simultaneously.The driving mechanism being in transmission connection with described adjustable ring is installed, and the control end of driving mechanism is connected with the outfan of processor, and the signal output part of video camera is connected with the signal input part of processor.
Beneficial effect: the topmost feature of the present invention is can make the convex lens in dome skylight do axial translation by regulating sleeve, is projected in the diverse location on eyes thereby can change sighting target, realizes the object of dynamic adjustments and detection of dynamic.Dexterously video camera is arranged on to convex lens center, reflective information can be detected the most accurately, if adjustable ring is increased and driven, can realize the object of automatic detection.Sighting target groove is set in dome skylight and can changes as required different sighting targets, thereby be the correct examination criteria that provides fully many that detects.The front end of dome skylight mates laminating with eyes outline, utilize the light source of dome skylight rear end to irradiate sighting target, converge and project on eyes, and reflection, the pattern reflecting from eyes by camera collection, by processor, reflection graphic patterns is analyzed and processed, be connected with " edge detector " with processor, can determine that stored reflection graphic patterns is converted to the transfer point of dark space from bright district.According to the excessive situation of light and shade, determine maximum level and minimal level and state.Health or the disease degree of patient's eye determined in the contrast of calling data storehouse.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention;
Fig. 2 is the A-A cross-sectional view of Fig. 1;
Fig. 3-Fig. 5 is respectively the front schematic view of three kinds of different sighting targets.
Number in the figure 1 is support, and 2 is lighting cylinder, and 3 is convex lens, and 4 is adjustable ring, and 5 is axial slider, and 6 is lens carrier, and 7 is sighting target slot, and 8 is sighting target, and 9 is light source, and 10 is parallel snoot, and 11 is camera cradle, and 12 is video camera.
the specific embodiment
Embodiment 1: a kind of adjustable type eye detection device, referring to Fig. 1, at the rear side of lighting cylinder 2, be sealedly connected with the parallel snoot 10 of directional light, and the focal position of the parallel snoot 10 of directional light is provided with light source 9.At lighting cylinder 2, be fixed with support 1 with parallel snoot 10 outsides.In lighting cylinder 2, be set with a convex lens 3, at convex lens 3 outward flanges, be fixed with lens carrier 6, at the outward flange of lens carrier 6, be radially laid with axial slider 5.
Referring to Fig. 2, on the circumferential side wall at lighting cylinder 2 middle parts, be laid with the adjustment hole with axially parallel; Described each axial slider 5 difference Matching installations are in each adjustment hole.Simultaneously, in lighting cylinder 2 outsides, be set with adjustable ring 4, the inwall of this adjustable ring 4 is threaded with the outward flange of described each axial slider 5, thereby after adjustable ring 4 is rotated, adjustable ring 4 does not move axially, but convex lens 3 and each axial slider 5 can move axially, thereby reach the object of focusing.
Between described lighting cylinder 2 and parallel snoot 10, be provided with sighting target 8.Referring to Fig. 3, Fig. 4 and Fig. 5 sighting target 8, be that dark donut is set on dianegative, or arachnoid pattern, or interval bar shaped speckle.
The light that light source 9 sends becomes directional light after by parallel snoot 10, and directional light presents chequered with black and white parallel light projection after by sighting target 8.The effect of converging through convex lens 5 projects on eyes again, by regulating its focal length of convex lens axial translation scalable, keep sighting target projection to be presented on eyes with projection the most clearly, can guarantee that sighting target is projected in different outer being set up on eyes by changing focal length simultaneously, thereby reach dynamic projection process.
Information gathering is to be partly provided with centre bore at the center of convex lens 5, video camera 12 is installed in centre bore, between this video camera 12 and center bore inner wall, there is fit clearance, video camera 12 is fixed on lighting cylinder medial wall by camera support 11, and the signal output part of video camera 12 is connected with the signal input part of processor.
Embodiment 2: referring to Fig. 1, content is substantially the same manner as Example 1, different: between described lighting cylinder 2 and parallel snoot 10, be provided with the sighting target groove 7 of a side opening, each sighting target 8 as shown in Fig. 3, Fig. 4 and Fig. 5 can be movably installed in sighting target groove 7.Thereby provide a kind of scheme of flexible replacing sighting target, for improving accuracy of detection.
Embodiment 3: accompanying drawing is not drawn, content is substantially the same manner as Example 1, different: the driving mechanism being in transmission connection with described adjustable ring is installed, the control end of driving mechanism is connected with the outfan of processor, the signal output part of video camera is connected with the signal input part of processor, thereby can realize the object that automatic control detects automatically.
Claims (4)
1. an adjustable type eye detection device, comprises support, lighting cylinder, light source and sighting target, it is characterized in that: in lighting cylinder, be set with a convex lens, at convex lens outward flange, be fixed with lens carrier, at the outward flange of lens carrier, be radially laid with axial slider; On the circumferential side wall at lighting cylinder middle part, be laid with the adjustment hole with axially parallel; Described each axial slider difference Matching installation is in each adjustment hole; Meanwhile, in lighting cylinder outside, being set with one, only can rotate can not axially movable adjustable ring, and the inwall of this adjustable ring is threaded with the outward flange of described each axial slider; Center at described convex lens is provided with centre bore, and video camera is installed in centre bore, between this video camera and center bore inner wall, has fit clearance, and video camera is fixed on lighting cylinder medial wall by support; Rear side at lighting cylinder is sealedly connected with the parallel snoot of directional light, and the focal position of the parallel snoot of directional light is provided with light source; Between described lighting cylinder and parallel snoot, be provided with sighting target; Described sighting target is that dark donut is set on dianegative, or arachnoid pattern, or interval bar shaped speckle.
2. according to the adjustable type eye detection device shown in claim 1, it is characterized in that: between described lighting cylinder and parallel snoot, be provided with the sighting target groove of a side opening, described sighting target is movably installed in sighting target groove.
3. according to the adjustable type eye detection device shown in claim 1, it is characterized in that: at lighting cylinder, be fixed with support with parallel snoot outside simultaneously.
4. according to the adjustable type eye detection device shown in claim 1, it is characterized in that: the driving mechanism being in transmission connection with described adjustable ring is installed, the control end of driving mechanism is connected with the outfan of processor, and the signal output part of video camera is connected with the signal input part of processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350831.1A CN104068826B (en) | 2014-07-23 | 2014-07-23 | Adjustable type eye detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350831.1A CN104068826B (en) | 2014-07-23 | 2014-07-23 | Adjustable type eye detection device |
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| Publication Number | Publication Date |
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| CN104068826A true CN104068826A (en) | 2014-10-01 |
| CN104068826B CN104068826B (en) | 2016-02-24 |
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| CN201410350831.1A Expired - Fee Related CN104068826B (en) | 2014-07-23 | 2014-07-23 | Adjustable type eye detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758112A (en) * | 2019-02-25 | 2019-05-17 | 北京大学第三医院 | A kind of cornea curvimeter |
| CN111936905A (en) * | 2018-03-30 | 2020-11-13 | Idexx实验室公司 | Laser optical assembly for flow cytometer |
Citations (7)
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|---|---|---|---|---|
| CN2099547U (en) * | 1991-09-17 | 1992-03-25 | 王永雁 | Vision regulating range determining instrument |
| CN1817295A (en) * | 2005-01-24 | 2006-08-16 | 株式会社拓普康 | Visual acuity chart displaying apparatus and optometry apparatus |
| US20070030450A1 (en) * | 2005-08-03 | 2007-02-08 | Eastman Kodak Company | Automated fundus imaging system |
| CN201379552Y (en) * | 2009-02-27 | 2010-01-13 | 苏州六六视觉科技股份有限公司 | Mydriasis-free eyeground photographing device |
| CN101766472A (en) * | 2009-12-31 | 2010-07-07 | 中国科学院长春光学精密机械与物理研究所 | Liquid crystal adaptive retinal imaging optical system for aberration correction with self-regulating visibility |
| US20110279777A1 (en) * | 2007-05-17 | 2011-11-17 | Amo Development, Llc | System and Method for Illumination and Fixation With Ophthalmic Diagnostic Instruments |
| JP2012143270A (en) * | 2011-01-06 | 2012-08-02 | Nidek Co Ltd | Fundus photography device |
-
2014
- 2014-07-23 CN CN201410350831.1A patent/CN104068826B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2099547U (en) * | 1991-09-17 | 1992-03-25 | 王永雁 | Vision regulating range determining instrument |
| CN1817295A (en) * | 2005-01-24 | 2006-08-16 | 株式会社拓普康 | Visual acuity chart displaying apparatus and optometry apparatus |
| US20070030450A1 (en) * | 2005-08-03 | 2007-02-08 | Eastman Kodak Company | Automated fundus imaging system |
| US20110279777A1 (en) * | 2007-05-17 | 2011-11-17 | Amo Development, Llc | System and Method for Illumination and Fixation With Ophthalmic Diagnostic Instruments |
| CN201379552Y (en) * | 2009-02-27 | 2010-01-13 | 苏州六六视觉科技股份有限公司 | Mydriasis-free eyeground photographing device |
| CN101766472A (en) * | 2009-12-31 | 2010-07-07 | 中国科学院长春光学精密机械与物理研究所 | Liquid crystal adaptive retinal imaging optical system for aberration correction with self-regulating visibility |
| JP2012143270A (en) * | 2011-01-06 | 2012-08-02 | Nidek Co Ltd | Fundus photography device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111936905A (en) * | 2018-03-30 | 2020-11-13 | Idexx实验室公司 | Laser optical assembly for flow cytometer |
| US11662542B2 (en) | 2018-03-30 | 2023-05-30 | Idexx Laboratories, Inc. | Flow cytometer, laser optics assembly thereof, and methods of assembling the same |
| CN109758112A (en) * | 2019-02-25 | 2019-05-17 | 北京大学第三医院 | A kind of cornea curvimeter |
| CN109758112B (en) * | 2019-02-25 | 2024-06-07 | 北京大学第三医院 | Cornea curvature instrument |
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| CN104068826B (en) | 2016-02-24 |
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Effective date of registration: 20151221 Address after: 450000 Zhengzhou City, Henan province Navigation Road No. 94 Applicant after: Huanghe S & T College Address before: 450015 No. 94 middle navigation road, 27 District, Henan, Zhengzhou Applicant before: Li Yueling |
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