CN201216588Y - Character position alterable eyesight test chart - Google Patents
Character position alterable eyesight test chart Download PDFInfo
- Publication number
- CN201216588Y CN201216588Y CNU2008201500739U CN200820150073U CN201216588Y CN 201216588 Y CN201216588 Y CN 201216588Y CN U2008201500739 U CNU2008201500739 U CN U2008201500739U CN 200820150073 U CN200820150073 U CN 200820150073U CN 201216588 Y CN201216588 Y CN 201216588Y
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- CN
- China
- Prior art keywords
- visual acuity
- acuity chart
- runners
- character
- pair
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- Expired - Fee Related
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Abstract
The utility model relates to a visual acuity chart with variable character positions. The visual acuity chart comprises a plurality of characters with different sizes at different positions, visual acuity values, a bottom plate and a plurality of draw plates, wherein a plurality of parallel runners are arranged on the bottom plate; each two runners are counterparts, and the mouths of each pair of the runners have the same direction; the draw plates are arranged between each pair of the runners and can be inserted into or withdrawn from the runners; the characters with different sizes at different positions are arranged on the plurality of draw plates; and the visual acuity values determined according to the size of the characters are marked on one side of the draw plates. In the visual acuity chart, the characters are separately arranged on the plurality of draw plates according to the sizes and the different positions, and each draw plate is inserted into the runners at random to form a new visual acuity chart. Accordingly, the visual acuity chart can prevent the visual acuity detection accuracy due to the memory influence by changing the draw plates in the runners of the bottom plate during visual acuity detection.
Description
Technical field
This utility model relates to visual acuity chart, relates in particular to the variable visual acuity chart of a kind of character position.
Background technology
Common visual acuity chart is printed on paper, each character position on paper of visual acuity chart is changeless, thus when measuring vision, still be not intended to all certain memory can be arranged no matter have a mind to the position of visual acuity chart character, so give and measure vision and brought trouble, because to the memory of visual acuity chart character and the accurate vision of test eye.
Summary of the invention
Technical problem to be solved in the utility model provides the variable visual acuity chart of a kind of character position, and by the position of character on the change visual acuity chart, thereby elimination reaches the purpose of accurate test eye vision to the memory of visual acuity chart character position.
For solving the problems of the technologies described above, the visual acuity chart that this utility model character position is variable, the visual acuity chart character and the vision numerical value that comprise some diverse locations and size, also comprise base plate and some pumping boards, described base plate is provided with some parallel chutes, two of described chutes are a pair of, the notch of described a pair of chute in opposite directions, described pumping board is positioned between a pair of chute of described base plate and can inserts or extract out, the visual acuity chart character of the same size of described some diverse locations is listed on some pumping boards, and fixed described vision numerical value marks the side in described pumping board according to the visual acuity chart character boundary.
Because the variable visual acuity chart of this utility model character position has adopted technique scheme, be about to the visual acuity chart character and be respectively on the polylith pumping board by identical size and diverse location, each pumping board inserts in the chute of base plate randomly, thereby forms a brand-new visual acuity chart; When the test vision, the pumping board in the conversion base plate chute has been avoided influencing the accuracy that eye eyesight is tested because of memory as required.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the structural representation of the variable visual acuity chart of this utility model character position,
Fig. 2 is the side view of the variable visual acuity chart base plate of this utility model character position.
The specific embodiment
As shown in Figure 1, the visual acuity chart that this utility model character position is variable, the visual acuity chart character 4 and the vision numerical value 5 that comprise some diverse locations and size, also comprise base plate 1 and some pumping boards 2, described base plate 1 is provided with some parallel chutes 3,3 two of described chutes are a pair of, the notch of described a pair of chute in opposite directions, described pumping board 2 is positioned between a pair of chute of described base plate and can inserts or extract out, the visual acuity chart character 4 of the same size of described some diverse locations is listed on some pumping boards 2, and fixed described vision numerical value 5 marks the side in described pumping board 2 according to visual acuity chart character 4 sizes.
Because the variable visual acuity chart of this utility model character position has adopted technique scheme, being about to visual acuity chart character 4 is respectively on the polylith pumping board 2 by identical size and diverse location, each pumping board inserts in the chute 3 of base plate 1 randomly, thereby forms a brand-new visual acuity chart; When the test vision, the pumping board 2 in conversion base plate 1 chute 3 has been avoided influencing the accuracy that eye eyesight is tested because of memory as required.
Claims (1)
1, the variable visual acuity chart of a kind of character position, the visual acuity chart character and the vision numerical value that comprise some diverse locations and size, it is characterized in that: also comprise base plate and some pumping boards, described base plate is provided with some parallel chutes, two of described chutes are a pair of, the notch of described a pair of chute in opposite directions, described pumping board is positioned between a pair of chute of described base plate and can inserts or extract out, the visual acuity chart character of the same size of described some diverse locations is listed on some pumping boards, and fixed described vision numerical value marks the side in described pumping board according to the visual acuity chart character boundary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201500739U CN201216588Y (en) | 2008-06-26 | 2008-06-26 | Character position alterable eyesight test chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201500739U CN201216588Y (en) | 2008-06-26 | 2008-06-26 | Character position alterable eyesight test chart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201216588Y true CN201216588Y (en) | 2009-04-08 |
Family
ID=40539422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201500739U Expired - Fee Related CN201216588Y (en) | 2008-06-26 | 2008-06-26 | Character position alterable eyesight test chart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201216588Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104382553A (en) * | 2014-11-27 | 2015-03-04 | 德清县新市镇士林初级中学 | Flexibly converted simple visual chart |
| CN105596185A (en) * | 2014-11-25 | 2016-05-25 | 郭毅 | Top-view eye exercise sighting mark drawing board |
-
2008
- 2008-06-26 CN CNU2008201500739U patent/CN201216588Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596185A (en) * | 2014-11-25 | 2016-05-25 | 郭毅 | Top-view eye exercise sighting mark drawing board |
| CN104382553A (en) * | 2014-11-27 | 2015-03-04 | 德清县新市镇士林初级中学 | Flexibly converted simple visual chart |
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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: 20090408 |