CN108742505A - A kind of anti-cheating visual chart - Google Patents
A kind of anti-cheating visual chart Download PDFInfo
- Publication number
- CN108742505A CN108742505A CN201810664420.8A CN201810664420A CN108742505A CN 108742505 A CN108742505 A CN 108742505A CN 201810664420 A CN201810664420 A CN 201810664420A CN 108742505 A CN108742505 A CN 108742505A
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- China
- Prior art keywords
- letter
- alphabet
- face
- holder
- volume
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- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Adornments (AREA)
Abstract
The invention discloses a kind of anti-cheating visual charts, including holder, being horizontally disposed on the holder has several shafts, rotatable letter volume is arranged in each shaft, the letter volume is polyhedron, and the transversely arranged alphabet for being useful for test eyesight on each face, and the alphabetical list sorting on each face is different.Letter volume can be rotated, by rotating letter volume, change the sequence of alphabet, since letter volume is polyhedron, it is both provided with a line letter on each face, and the alphabet in each face puts in order difference, so that when test, random rotation goes out one side, and then tester can not practise fraud, and improve the accuracy of test.
Description
Technical field
The present invention relates to eyesight testing technical field of tools more particularly to a kind of anti-cheating visual charts.
Background technology
It is excessively increasingly severe with eye with the exacerbation of learning burden and the development of electronic product, lead to many children
Very little occurs as soon as visual problems, and existing eyesight testing is tentatively first tested using visual chart, but existing eyesight testing
Table all prints, and test letter above is fixed sequence, is easy under so that tester is remembered in short distance alphabetical
It puts in order, error is caused to test.
Invention content
In view of the foregoing drawbacks or insufficient, the purpose of the present invention is to provide a kind of anti-cheating visual charts, can prevent from testing
Person shifts to an earlier date sequence alphabetical in recall tests table.
The technical scheme is that：
A kind of anti-cheating visual chart, including holder, being horizontally disposed on the holder has several shafts, and being arranged in each shaft can
The letter of rotation is rolled up, and the letter volume is polyhedron, and the transversely arranged alphabet for being useful for testing eyesight on each face, and every
Alphabetical list sorting on a face is different.
The letter that the letter is rolled up in alphabet from the bottom up is sequentially increased, and the alphabet size of alphabet is identical in colleague.
The rack side wall is equipped with LED light.
Each shaft is equipped with swing handle.
Glass back plate is installed on the holder.
Compared with the prior art, beneficial effects of the present invention are：
The present invention provides a kind of anti-cheating visual charts, can rotate letter volume, by rotating letter volume, change letter
The sequence of table is both provided with a line letter, and the alphabet arrangement in each face is suitable since letter volume is polyhedron on each face
Sequence is different, so that when test, random rotation goes out one side, and then tester can not practise fraud, and improve the standard of test
True property.
Description of the drawings
Fig. 1 is the anti-cheating visual chart structural schematic diagram of the present invention；
Fig. 2 is alphabetical volume structure schematic diagram of the invention.
Specific implementation mode
The present invention is described in detail below in conjunction with attached drawing, it is clear that described embodiment is only the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of anti-cheating visual chart, including holder 1, it is horizontally disposed on the holder 1
There are several shafts 2, rotatable letter volume 3 is arranged in each shaft 2, as shown in Fig. 2, the letter volume 3 is polyhedron, and
The transversely arranged alphabet for being useful for test eyesight on each face, and the alphabetical list sorting on each face is different.
Letter of the letter volume 3 from the bottom up in alphabet is sequentially increased, and the alphabet size of alphabet is identical in colleague.
In order to increase brightness of illumination, LED light is installed in 1 side wall of the holder, glass back plate is installed on the holder 1
4.Each shaft 2 is equipped with swing handle.
In use, only needing to rotate shaft, the face of hand-over word parent roll 3, so that it may to change lexicographic order.
It is obvious to a person skilled in the art that will appreciate that above-mentioned Concrete facts example is the preferred side of the present invention
Case, therefore improvement, the variation that those skilled in the art may make certain parts in the present invention, embodiment is still this
The principle of invention, realization is still the purpose of the present invention, belongs to the range that the present invention is protected.
Claims (5)
1. a kind of anti-cheating visual chart, which is characterized in that including holder（1）, the holder（1）Upper be horizontally disposed with has several shafts
（2）, each shaft（2）On be arranged with rotatable letter volume（3）, the letter volume（3）For polyhedron, and on each face laterally
It is arranged with the alphabet for testing eyesight, and the alphabetical list sorting on each face is different.
2. anti-cheating visual chart according to claim 1, which is characterized in that the letter volume（3）Alphabet from the bottom up
In letter be sequentially increased, the alphabet size of alphabet is identical in colleague.
3. anti-cheating visual chart according to claim 1, which is characterized in that the holder（1）Side wall is equipped with LED light.
4. anti-cheating visual chart according to claim 1, which is characterized in that each shaft（2）It is equipped with turning handle
Hand.
5. anti-cheating visual chart according to claim 1, which is characterized in that the holder（1）On glass back plate is installed
（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664420.8A CN108742505A (en) | 2018-06-25 | 2018-06-25 | A kind of anti-cheating visual chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664420.8A CN108742505A (en) | 2018-06-25 | 2018-06-25 | A kind of anti-cheating visual chart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108742505A true CN108742505A (en) | 2018-11-06 |
Family
ID=63977437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810664420.8A Withdrawn CN108742505A (en) | 2018-06-25 | 2018-06-25 | A kind of anti-cheating visual chart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108742505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397471A (en) * | 2021-06-30 | 2021-09-17 | 重庆电子工程职业学院 | Vision data acquisition system based on Internet of things |
-
2018
- 2018-06-25 CN CN201810664420.8A patent/CN108742505A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397471A (en) * | 2021-06-30 | 2021-09-17 | 重庆电子工程职业学院 | Vision data acquisition system based on Internet of things |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181106 |
|
| WW01 | Invention patent application withdrawn after publication |