CN103876705B - Vision tester - Google Patents
Vision tester Download PDFInfo
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- CN103876705B CN103876705B CN201410148536.8A CN201410148536A CN103876705B CN 103876705 B CN103876705 B CN 103876705B CN 201410148536 A CN201410148536 A CN 201410148536A CN 103876705 B CN103876705 B CN 103876705B
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Abstract
The invention relates to a medical instrument for the ophthalmology department, in particular to a vision tester. The vision tester comprises a data processing device, a display device and an optical system. A sighting mark library is arranged in the data processing device. The display device is connected with the data processing device. The data processing device extracts sighting marks from the sighting mark library and sends the sighting marks onto the display device for displaying. The optical system comprises a detection lens and one or more refraction elements. The refraction elements are arranged in a light path between the detection lens and the display device and used for carrying out multiple reflections on the light path to enable the light path to have multiple sections of turning portions. The optical axis of the detection lens is perpendicular to the display surface of the display device after being reflected by the refraction elements. According to the vision tester, the multiple refraction elements are arranged to carry out multiple reflections on the light path, so the light path is lengthened in a limited space; consequently, the requirement for the display accuracy of a liquid crystal display is reduced, the size of the vision tester is reduced, and the miniaturization of the vision tester becomes possible.
Description
Technical field
The present invention relates to a kind of ophthalmology medical apparatus, specifically a kind of visual test instrument.
Background technology
Visual function evaluation is one of health examination and the most basic inspection project of clinical ophthalmology.Traditional inspection method, mainly
It is eyesight table look-up.
Eyesight testing equipment the most traditional and common has lamp box visual chart, eyesight projecting apparatus, comprehensive optometry instrument, these eyesights
The sighting target of table is with white and black, that is, the figure constitution of high-contrast, and research has been demonstrated that, this with special contrast
Sighting target check visual function, its result can only reflect under human eye specified conditions the visual function of (seeing high contrast object).However, human eye
Be all in most of the cases in various different contrast environment viewing things, so have to check for out human eye various not
With the visual function in the case of contrast, the real of reflection human eye that could be scientifically practical regards ability.Therefore current, some are flourishing
Contrast sensitivity test is also served as the routine inspection to visual function by country.Additionally, these traditional eyesight detections at present
Equipment also has other defect, and its drawback is: one, the sighting target in visual chart and its arrangement mode are all fixing, general
Logical people is through the observation of short time, you can writes down sighting target and its arrangement mode, there is a possibility that cheating；2nd, need medical care
Personnel aside give directions sighting target using indicating bar, and examinee feeds back to medical personnel the sighting target opening direction seen, then warp
Cross medical worker's multilevel iudge, finally draw examinee's eyesight value, this brings no small workload to medical personnel.For understanding
Certainly above-mentioned drawback, subsequently occurs in that sighting target and its unfixed sight tester of arrangement mode, basic mode has two kinds, a kind of
It is that multiple different visual charts and visual chart replacing mechanism are set in lamp box visual chart, exchange visual chart at any time, can be significantly
Increase the difficulty of memory, reduce the possibility of cheating；Another kind is Intelligent electronic-type Vission detector, by computer or
Sighting target selected at random from internal sighting target storehouse by the data processing equipments such as single-chip microcomputer, shows on the display apparatus, then by medical personnel
Aside coordinate multilevel iudge, finally draw examinee's eyesight value.
Content of the invention
Although existing Intelligent electronic-type Vission detector can reduce the possibility of cheating, mitigate the work of medical personnel
Intensity, reduces the impact of human factor, but without exception, being still required for a sufficiently large electronic display unit is sighting target
Screen, and when testing eyesight, it usually needs apart from sighting target screen 3-5 rice, there is certain requirement to the place of detection, volume is also relatively
Greatly.That existing Intelligent electronic-type Vission detector cannot minimize additionally due to being subject to the display precision of LCDs and one-tenth
This restriction it is impossible to by instrument miniaturization, it is an object of the invention to provide to overcome the defect of prior art integral type,
The visual test instrument of compact conformation.
To achieve these goals, the invention discloses a kind of visual test instrument it is characterised in that: described visual test instrument
Including data processing equipment, display device and optical system, inside data processing equipment, be provided with sighting target storehouse, described display device with
Data processing equipment connects, and data processing equipment extracts sighting target at random from sighting target storehouse and delivers to display in display device, described
Optical system includes detection eyeglass, a piece of above dioptric element, and described dioptric element is arranged on detection eyeglass and display
In light path between device, multiple reflections are carried out to light path, make the part in light path with multistage turnover, described detection eyeglass
Optical axis vertical with display device display surface after the reflection of dioptric element.
This visual test instrument carries out multiple reflections to light path so that in limited space by arranging multi-disc dioptric element
Light path being extended, thus reducing the requirement of the display precision to LCDs, also reducing volume, make visual test instrument little
Type chemical conversion is in order to possible.And this tester, by being stored in multiple different sighting target storehouses, can detect normal vision, visual contrast
Susceptibility, dark adaptation and stereoscopic vision.
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
Brief description
Accompanying drawing 1 is the specific embodiment of the invention 1 optical system schematic diagram；
Accompanying drawing 2 is the specific embodiment of the invention 2 optical system schematic diagram.
Specific embodiment
Specific embodiment 1: as shown in figure 1, visual test instrument includes shell and the data processing equipment being arranged in shell
1st, display device 2 and optical system.Peep-hole 3 is provided with shell, data processing equipment 1 can be with single-chip microcomputer as core and
The miniature processing system of its memory and other peripheral cells composition or embedded system are constituted, data in this specific embodiment
Processing meanss 1 select single-chip microcomputer and the miniature processing system of other peripheral cells composition, and memory inside arranges sighting target storehouse, according to
Need, memory inside can arrange national standard sighting target storehouse, recruit-pilot sighting target storehouse, children's sighting target storehouse and CSF sighting target storehouse
One or more of.Described display device 2 selects lcd(LCDs) display, with data processing equipment 1 data output
End connects, and data processing equipment 1 extracts at random sighting target and deliver to display device 2 in aobvious according to key command or from sighting target storehouse
Show.Described optical system includes detection eyeglass and dioptric element 4, and more than dioptric element 4 is a piece of, described dioptric element 4 is arranged
In detection with multiple reflections being carried out to light path in the light path between eyeglass 5 and display device 2, make that there is in light path multistage turnover
Part is so that extending light path in limited space, thus reducing the requirement of the display precision to LCDs, described
Detection is vertical with display device 2 display surface after the reflection of dioptric element 4 with the optical axis of eyeglass 5.Refractive power number of times is more, more has
Beneficial to the requirement reducing the display precision to LCDs.But dioptric element 4 excessively can make complex structure, and easily go out event
Barrier.Described dioptric element 4 can select reflecting prism or speculum.
Specific embodiment 2: as shown in Fig. 2 for the function of increasing visual test instrument, adapting to different detection projects, such as general
Logical eye test, binocular visual acuity inspection, are preferably provided with eyeglass converter 6, are provided with eyeglass converter 6 in described visual test instrument
Multiple variety classes detection eyeglass 5(such as positive lens, negative lens, red green filter, cylindrical mirrors etc.), eyeglass converter 6 includes one
Individual many eyeglasses mounting bracket 601 and carriage drive device 602, in this specific embodiment, described many eyeglasses mounting bracket 601 is by one
Individual discoid eyeglass mounting disc is constituted, and described eyeglass mounting disc is uniformly provided with multiple eyeglass installing holes along concentric circles, and eyeglass is pacified
It is provided with various eyeglasses, described eyeglass mounting disc and the perpendicular setting of optical axis, described concentric circles is intersected with optical axis, described mirror in dress hole
Piece is installed disk center and is vertically provided with rotating shaft, and rotating shaft is provided with travelling gear, and described carriage drive device 602 includes a micromachine
And driving gear, described driving gear is fixed on the output shaft of micromachine and engaged with described travelling gear, data processing
Device 1 output control eyeglass converter 6 switches selected detection eyeglass 5 and enters in described optical system.
In order that described visual test instrument check that dark adaptation project, visual test instrument is provided with dazzle illuminating lamp
7, and described enclosure is done camera bellows process, dazzle illuminating lamp 7 arranges inside the housing, and light is peeped along optical axis direction direction
Window 3 one end, data processing equipment 1 controls the switch of dazzle illuminating lamp 7 according to built-in command, records simultaneously and shines from closing dazzle
Bright lamp 7 correctly recognizes the time of sighting target to examinee, thus drawing dark adaptation time.
It is also provided with examiner's information-storing device in order to store test result, in storage in described data processing equipment 1
Hold and include: name, sex, age, review time, inspection project, inspection doctor and inspection result etc..Examiner's information-storing device
Can external or utilize data processing equipment 1 internal storage.Additionally, described detector is additionally provided with print-out device and data
Processing meanss 1 connect, and with facilitating, testing result are exported.
Claims (3)
1. a kind of visual test instrument it is characterised in that: described visual test instrument includes data processing equipment, display device and optics
System, is provided with sighting target storehouse inside data processing equipment, described display device is connected with data processing equipment, data processing equipment from
Extract sighting target in sighting target storehouse and deliver to display in display device, in described data processing equipment, be additionally provided with examiner's information Store
Device；Described optical system includes detection eyeglass, a piece of above dioptric element, and described dioptric element is arranged on detection eyeglass
In light path and display device between, multiple reflections are carried out to light path, make the part in light path with multistage turnover, described detection
Optical axis with eyeglass is vertical with display device display surface after the reflection of dioptric element；It is provided with eyeglass in described visual test instrument
Converter, is provided with positive lens, negative lens and cylindrical mirror detection eyeglass in eyeglass converter, the selected detection of eyeglass converter switching is used
Eyeglass enters in described optical system；Described eyeglass converter includes eyeglass mounting bracket and carriage drive device more than one, institute
State many eyeglasses mounting bracket to be made up of a discoid eyeglass mounting disc, described eyeglass mounting disc is uniformly provided with many along concentric circles
Individual eyeglass installing hole, is provided with various eyeglasses, described eyeglass mounting disc and the perpendicular setting of optical axis in eyeglass installing hole, described concentric
Circle is intersected with optical axis, and described eyeglass is installed disk center and is vertically provided with rotating shaft, and rotating shaft is provided with travelling gear, described carriage drive dress
Put including a micromachine and driving gear, described driving gear be fixed on the output shaft of micromachine and with described driving cog
Wheel engagement, detection selected by the switching of data processing equipment output control eyeglass converter is entered in described optical system with eyeglass；Institute
State and in visual test instrument, be provided with dazzle illuminating lamp, enclosure is made camera bellows and processed, dazzle illuminating lamp arranges inside the housing, light
Along optical axis direction towards peep-hole one end.
2. visual test instrument according to claim 1 it is characterised in that: described dioptric element be reflecting prism.
3. visual test instrument according to claim 1 it is characterised in that: described dioptric element be speculum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148536.8A CN103876705B (en) | 2013-08-23 | 2014-04-14 | Vision tester |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013205195295 | 2013-08-23 | ||
| CN201320519529.5 | 2013-08-23 | ||
| CN201320519529 | 2013-08-23 | ||
| CN201410148536.8A CN103876705B (en) | 2013-08-23 | 2014-04-14 | Vision tester |
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| Publication Number | Publication Date |
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| CN103876705A CN103876705A (en) | 2014-06-25 |
| CN103876705B true CN103876705B (en) | 2017-01-18 |
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| CN201410148536.8A Active CN103876705B (en) | 2013-08-23 | 2014-04-14 | Vision tester |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015115202A1 (en) * | 2015-09-09 | 2017-03-09 | Optik Hecht E.K. | System for checking visual performance and for detecting and correcting visual defects |
| CN105996977A (en) * | 2016-07-06 | 2016-10-12 | 深圳大学 | Digital synoptophore auto concave-sphere replacement device and running method thereof |
| CN106264441A (en) * | 2016-07-20 | 2017-01-04 | 李成新 | A kind of novel myopia degree tester and application process |
| CN106137116B (en) * | 2016-08-26 | 2018-05-25 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| US11291363B2 (en) * | 2018-11-29 | 2022-04-05 | Dongguang Liu | Inspection instrument with automatic strabismus detection mechanism, and inspection method thereof |
| CN112741591B (en) * | 2021-01-14 | 2024-07-12 | 沈阳视达微医疗科技有限公司 | Vision detection device and vision detection method |
| CN113208555B (en) * | 2021-04-16 | 2024-07-30 | 中国人民解放军空军军医大学 | Rapid visual rod cell dark adaptation function inspection device and use method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2162206Y (en) * | 1993-01-11 | 1994-04-20 | 贾锐锋 | Vision monitor |
| GB0020728D0 (en) * | 2000-08-23 | 2000-10-11 | Kaye Wilson Lo | Opthalmic device |
| CN2580902Y (en) * | 2002-08-28 | 2003-10-22 | 邓刃锋 | Controllable reflective type analogue standard distance vision test chart |
| CN201303929Y (en) * | 2008-06-10 | 2009-09-09 | 上海伟星光学科技有限公司 | Verification wheel disc of color blindness correction effect and color vision tester |
| CN201263675Y (en) * | 2008-09-28 | 2009-07-01 | 上海彦科仪器有限公司 | Inner read type projection optometry instrument |
| JP2011004930A (en) * | 2009-06-25 | 2011-01-13 | Panasonic Electric Works Co Ltd | Ophthalmologic examination apparatus and hess examination apparatus |
| CN104010564A (en) * | 2011-10-21 | 2014-08-27 | 肯特·泰伯 | Functional vision tester |
| CN202458314U (en) * | 2012-01-13 | 2012-10-03 | 张仁发 | Automatic optometry instrument |
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Address after: Room 303, Pilot Building, No. 10 District (Science and Technology City) of Wenzhou High-tech Industrial Park, Longwan District, Wenzhou City, Zhejiang Province, 325000 Patentee after: Wenzhou High-vision Raymond Photoelectric Technology Co., Ltd. Address before: 325000 Third Floor of Pilot Building of Gaoyi High-tech Industrial Park, Longwan District, Wenzhou City, Zhejiang Province Patentee before: WENZHOU RAYMOND PHOTOELECTRICITY TECH. CO., LTD. |