CN2675040Y - Hand-held LC eyesight tester - Google Patents
Hand-held LC eyesight tester Download PDFInfo
- Publication number
- CN2675040Y CN2675040Y CN 200420024829 CN200420024829U CN2675040Y CN 2675040 Y CN2675040 Y CN 2675040Y CN 200420024829 CN200420024829 CN 200420024829 CN 200420024829 U CN200420024829 U CN 200420024829U CN 2675040 Y CN2675040 Y CN 2675040Y
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- CN
- China
- Prior art keywords
- lens barrel
- cursor
- screen
- image
- semi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an eyesight tester which is provided with an observation lens barrel (2) for light refraction. Left and right ends of the observation lens barrel are all provided with eye lenses, and the center part of the observation lens barrel is provided with a semi-reflecting and semi-transparent lens; the lower part on the middle part of a lens barrel is provided with a cursor screen which is an image occurrence screen, the side of the cursor screen is provided with a light path which is perpendicular to the lens barrel for projecting to the semi-reflecting and semi-transparent lens, and cursor image on the lower part is conveyed to observation lenses on left and right ends on the upper part. The utility model can be used for testing for human eyesight, can be used for a police for testing for a drunken driver, can be used for testing color blindness and color weakness, and particularly can safely and accurately be used for testing for eyesight of babies. The hand-held LC eyesight tester can be used in hospitals, maternal and child health hospitals, children hospitals, and various medical treatment health care mechanisms.
Description
One, technical field
This utility model relates to a kind of viseon tester, and especially a kind of viseon tester of hand-held liquid crystal display belongs to domestic or medical sight test means.
Two, background technology
Common eyesight exam method adopts those who are investigated to observe fixed sighting target at predetermined distance, judges vision according to its subjective observation judgement.This inspection method is difficult to infant is implemented to check, because the feedback information that is difficult to obtain the close fit of infant and obtains the vision of infant.The patent of invention (number of patent application is 02157288.7) of application is utilized the automatic observation following function of eyes to moving target before our company, sighting target is set to move on screen, whether the doctor makes apparent motion synchronously and trembles mobilely by observing eyes, judges vision.But the making of vision sign is printed on transparent tape.Rotate the drive tape by the control motor and move back and forth, realize that sighting target moves more complicated on the structure on screen.
Three, utility model content
The purpose of this utility model is: provide a kind of new viseon tester, especially the viseon tester of cursor screen or liquid crystal display.Simplify the structure of existing product, eliminate mechanical return difference, improve reliability and measuring accuracy.The purpose of this utility model is achieved in that a kind of viseon tester, be provided with anaclasis and observe lens barrel 2, the two ends, the left and right sides of observing lens barrel are equipped with eyepiece, the central authorities of observing lens barrel are provided with half-reflecting half mirror, the middle lower portion of lens barrel is provided with the cursor screen, the cursor screen shields for image, be projected to half-reflecting half mirror other being provided with of cursor screen in addition with the vertical light path of lens barrel, the cursor image of below is passed to sight glass place, two ends, the left and right sides, top, and right-hand detected person's eye image also passes to the left sight glass simultaneously.
Lens barrel 2 is observed in ad hoc anaclasis, and there is flexible shade 1 at two ends.During use, before flexible shade 1 is placed on tester and detected person's eyes.The cursor screen that screen takes place as image is generally liquid crystal display screen, it also can be the LED screen, image that screen produces takes place by CPU software set (also can be the moving image of other cyclelog control) in image, and the detected person can see moving of cursor in the liquid crystal display screen 3 of below by light path; The tester can see moving of this cursor and the stack image that detected person's eyeball moves.Whether keep same moved further by observing both, judge by detected person's vision.
Characteristics of the present utility model are: use the vision that this instrument can detect the people, can be used for the inspection of police to the drunken drivers, can do the inspection of achromatopsia color weakness, particularly can measure the vision of infant safety and precise.This detector is adapted to that each is big, use in institute of traditional Chinese medicine, maternity ﹠ child care center, children's hospital and the various medical and health care mechanism.Compare with external like product, have the cost performance height, use advantages such as convenient, that the crowd that is suitable for is wide.
Four, description of drawings
Fig. 1,2 is this utility model structure and index path
Fig. 3 is this utility model layout
Shade 1 is observed lens barrel 2, liquid crystal display screen 3, keyboard 4, mainboard 5, battery 6.
Five, the specific embodiment
As shown in drawings, mainboard 5 comprises microprocessor (containing memorizer) and the peripheral hardware that connects thereof, mainly comprise liquid crystal display screen 3 and keyboard 4, produce one as different sizes among Fig. 1 and image that moving, as people's eyes to this image have vision then the sight line of eyes make corresponding sports with the image of this motion, measure the vision of infant safety and precise.Different vision that the image of different sizes is then corresponding.
At the other prism that is provided with of cursor screen, constitute and the vertical light path of lens barrel in addition, the cursor screen image is delivered to half-reflecting half mirror, half-reflecting half mirror can be the prism or the plane mirror of plated film.
Microprocessor can adopt the product of any model, and corresponding memory is arranged, and LCD drives and adopts ICBU9728AKV IC BU9728AKV, models such as BU9716BKV.
Claims (4)
1, a kind of viseon tester, it is characterized in that being provided with anaclasis and observe lens barrel (2), the two ends, the left and right sides of observing lens barrel are equipped with eyepiece, the central authorities of observing lens barrel are provided with half-reflecting half mirror, the middle lower portion of lens barrel is provided with the cursor screen, cursor screen shields for image, is provided with the vertical light path of lens barrel on cursor screen side in addition and is projected to half-reflecting half mirror, two ends, left and right sides sight glass above the cursor image of below is passed to.
2, by the described viseon tester of claim 1, it is characterized in that anaclasis observation lens barrel (2), it is characterized in that: there is flexible shade (1) at its two ends.
3, by the described viseon tester of claim 1, it is characterized in that: described cursor screen is liquid crystal.
4, by the described viseon tester of claim 1, it is characterized in that: the other prism that is provided with of cursor screen, constitute and the vertical light path of lens barrel, the cursor screen image is delivered to half-reflecting half mirror, half-reflecting half mirror is the prism or the plane mirror of plated film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024829 CN2675040Y (en) | 2004-02-20 | 2004-02-20 | Hand-held LC eyesight tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024829 CN2675040Y (en) | 2004-02-20 | 2004-02-20 | Hand-held LC eyesight tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2675040Y true CN2675040Y (en) | 2005-02-02 |
Family
ID=34483524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420024829 Expired - Fee Related CN2675040Y (en) | 2004-02-20 | 2004-02-20 | Hand-held LC eyesight tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2675040Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102846305A (en) * | 2012-10-15 | 2013-01-02 | 上海华勤通讯技术有限公司 | Handhold equipment for inspecting vision and method |
| CN106264442A (en) * | 2016-09-27 | 2017-01-04 | 深圳市亮睛视觉研究所 | A kind of visual performance tester |
| KR20200018063A (en) * | 2018-08-10 | 2020-02-19 | 김대홍 | Apparatus of eyesight test |
-
2004
- 2004-02-20 CN CN 200420024829 patent/CN2675040Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102846305A (en) * | 2012-10-15 | 2013-01-02 | 上海华勤通讯技术有限公司 | Handhold equipment for inspecting vision and method |
| CN102846305B (en) * | 2012-10-15 | 2014-11-26 | 上海华勤通讯技术有限公司 | Handhold equipment for inspecting vision and method |
| CN106264442A (en) * | 2016-09-27 | 2017-01-04 | 深圳市亮睛视觉研究所 | A kind of visual performance tester |
| KR20200018063A (en) * | 2018-08-10 | 2020-02-19 | 김대홍 | Apparatus of eyesight test |
| KR102142097B1 (en) * | 2018-08-10 | 2020-08-06 | 김대홍 | Apparatus of eyesight test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |