CN201061521Y - Adjustable test-chart - Google Patents
Adjustable test-chart Download PDFInfo
- Publication number
- CN201061521Y CN201061521Y CNU2007200244567U CN200720024456U CN201061521Y CN 201061521 Y CN201061521 Y CN 201061521Y CN U2007200244567 U CNU2007200244567 U CN U2007200244567U CN 200720024456 U CN200720024456 U CN 200720024456U CN 201061521 Y CN201061521 Y CN 201061521Y
- Authority
- CN
- China
- Prior art keywords
- visual chart
- letter
- visual acuity
- acuity chart
- letters
- 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
Links
Images
Abstract
An adjustable visual chart belongs to the technical field of medical instruments. The real eyesight of the tested can not be detected once the tested memorize the order of letters because the arrangement of letters placed in each line of a currently used visual chart is fixed in order, consequently false retrieval may be caused, which brings troublesome to job placement. The technical scheme of the utility model includes that a letter display window of the visual chart (5) is mounted on the visual chart box (2), a rotation shaft (3) with a knot (4) is installed inside the visual chart box (3), a letter-arrangement changing shaft of the visual chart (1) is fixed on the rotation shaft (3), and the letter display window of the visual chart (5) is corresponding to the letter-arrangement changing shaft of the visual chart (1). The utility model has the advantages that rows of letters with different orders are pasted on the letter-arrangement changing shaft of the visual chart (1), any row of letters can be rotated by rotating the knot to proceed tests at the time of testing eyesight, and the utilization of the utility model avoids the false retrieval of the sight of the tested and increases the accuracy of the sight testing.
Description
Technical field:
This utility model relates to the medical device technical field, is a kind of adjustable visual acuity chart more specifically.
Background technology:
The present every capable letter of visual acuity chart that uses puts in order fixing, does not go out its true vision in case the measured remembers detected at all, might cause the flase drop false retrieval to make troubles to employment.
Summary of the invention:
For overcoming above-mentioned shortcoming, the purpose of this utility model is a kind of adjustable visual acuity chart of design.Its technical scheme is: visual acuity chart case 2 is provided with visual acuity chart letter display window 5, the rotating shaft 3 that has knob 4 is arranged in the visual acuity chart case 2, be fixed with the alphabetical axle 1 of arranging of conversion visual acuity chart in rotating shaft 3, visual acuity chart letter display window 5 is corresponding with conversion visual acuity chart letter arrangement axle 1.The advantage of this utility model is: this adjustable visual acuity chart reasonable in design practicality, novelty is skillfully constructed, on conversion visual acuity chart letter arrangement axle, post the different letters that put in order of several row, can produce any delegation letter by rotary knob and test when giving a test of one's eyesight, its use has been avoided the flase drop false retrieval of tester's vision has been improved the accuracy that gives a test of one's eyesight.
Description of drawings:
This accompanying drawing is this utility model structural representation.In the accompanying drawing: 1, axle arranged in conversion visual acuity chart letter, and 2, the visual acuity chart case, 3, rotating shaft, 4, knob, 5, visual acuity chart letter display window.
The specific embodiment:
Visual acuity chart case 2 is provided with visual acuity chart letter display window 5, and the rotating shaft 3 that has knob 4 is arranged in the visual acuity chart case 2, is fixed with the alphabetical axle 1 of arranging of conversion visual acuity chart in rotating shaft 3, and visual acuity chart letter display window 5 is corresponding with conversion visual acuity chart letter arrangement axle 1.On conversion visual acuity chart letter arrangement axle 1, post the different letters that put in order of several row, when giving a test of one's eyesight, can produce any delegation letter and test by rotary knob 4.
Claims (1)
1. adjustable visual acuity chart, it is characterized in that: visual acuity chart case (2) is provided with visual acuity chart letter display window (5), the rotating shaft (3) that has knob (4) is arranged in the visual acuity chart case (2), be fixed with conversion visual acuity chart letter arrangement axle (1) in rotating shaft (3), visual acuity chart letter display window (5) is corresponding with alphabetical arrange spool (1) of conversion visual acuity chart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200244567U CN201061521Y (en) | 2007-07-23 | 2007-07-23 | Adjustable test-chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200244567U CN201061521Y (en) | 2007-07-23 | 2007-07-23 | Adjustable test-chart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201061521Y true CN201061521Y (en) | 2008-05-21 |
Family
ID=39449892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200244567U Expired - Fee Related CN201061521Y (en) | 2007-07-23 | 2007-07-23 | Adjustable test-chart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201061521Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309311A (en) * | 2011-09-14 | 2012-01-11 | 张潇予 | Renewable visual chart |
-
2007
- 2007-07-23 CN CNU2007200244567U patent/CN201061521Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309311A (en) * | 2011-09-14 | 2012-01-11 | 张潇予 | Renewable visual chart |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202141670U (en) | Portable urine analyzer | |
| CN201061521Y (en) | Adjustable test-chart | |
| CN203408028U (en) | Anti-cheating visual chart | |
| CN202352208U (en) | Spectrometer experimental device | |
| CN206379085U (en) | Electric energy metrical wiring vector analysis training chart board | |
| CN102364556A (en) | Spectrometer experimental device | |
| CN202216984U (en) | Electrical measurement instrument | |
| CN205103654U (en) | Automatically controlled detecting system of multi -purpose vehicle(MPV) | |
| CN201524063U (en) | Vision test disk | |
| CN201262794Y (en) | Demonstration instrument for teaching force parallelogram rule | |
| CN201662595U (en) | Sheet resistance tester for conductive glass film layer of touch screen | |
| CN202886779U (en) | Detection glasses | |
| CN203677054U (en) | Visual testing chart panel and visual testing chart lamp box | |
| CN201221955Y (en) | Multifunctional test experiment instrument | |
| CN201157349Y (en) | Simple sight test card | |
| CN202443062U (en) | Multifunctional electroprobe | |
| CN109506553A (en) | A kind of LED display panel angel measuring instrument | |
| CN209542729U (en) | It is a kind of for detecting the test cabinet of actuator | |
| CN203038502U (en) | Portable psychological test answer board | |
| CN202636905U (en) | Changeable eye chart | |
| CN202929909U (en) | Improved dynamometer for teaching | |
| CN208305067U (en) | A kind of health examination robot | |
| CN202886288U (en) | Agricultural multi-parameter detector | |
| CN200994768Y (en) | Device for changing visual-chart sequence | |
| CN201519155U (en) | Hand dynamometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 |