CN102415873A - Near vision chart with distance marking rod - Google Patents
Near vision chart with distance marking rod Download PDFInfo
- Publication number
- CN102415873A CN102415873A CN2010102958229A CN201010295822A CN102415873A CN 102415873 A CN102415873 A CN 102415873A CN 2010102958229 A CN2010102958229 A CN 2010102958229A CN 201010295822 A CN201010295822 A CN 201010295822A CN 102415873 A CN102415873 A CN 102415873A
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- China
- Prior art keywords
- frontal plate
- mark rod
- distance
- near vision
- marker post
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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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Abstract
The invention discloses a near vision chart with a distance marking rod. The near vision chart comprises a sighting target base plate, a first mark rod, a second mark rod, a first frontal plate and a second frontal plate, wherein one end of the first mark rod is fixedly connected with the sighting target base plate; the other end of the first mark rod is hinged with one end of the second mark rod; the first frontal plate is hinged on an end head of a hinging position of the first mark rod and the second mark rod; and the second frontal plate is hinged on an end head of the other end of the second mark rod. When the test distance is 250mm, only the first mark rod is used; when the test distance is 400mm, the first frontal plate is screwed up and the second mark rod is screwed forwards so as to keep the first mark rod and the second mark rod on the same straight line, and the position of the second frontal plate is regulated well; when the near vision chart with the distance marking rod is used for testing vision, the two test distances can be selected, and the forehead of a testee is adhered to the frontal plate; and the distance between the frontal plate and the sighting target base plate is fixed, so that the test result of the vision is accurate.
Description
Technical field
The present invention relates to a kind of near vision test type.
Background technology
The detection distance that existing near vision test type is generally stipulated when giving a test of one's eyesight is 250 millimeters or 400 millimeters; It is unlike distant vision test chart; The distance that detects is 5000 millimeters promptly 5 meters far away, its range difference tens millimeters accuracys that do not influence the judgement vision when giving a test of one's eyesight.And near vision test type detection range difference tens millimeters its testing results differ more.How distance during detection between human eye and the visual acuity chart is controlled on the distance of standard is the problem that needs solve.
Summary of the invention
The objective of the invention is for solve existing near vision test type generally when giving a test of one's eyesight the detection distance of regulation be 250 millimeters or 400 millimeters; It is unlike distant vision test chart; The distance that detects is 5000 millimeters promptly 5 meters far away, its range difference tens millimeters accuracys that do not influence the judgement vision when giving a test of one's eyesight.And near vision test type detection range difference tens millimeters its testing results differ more problem, and then provide a kind of with the near vision test type apart from mark post.
The present invention includes sighting target substrate, first marker post, second marker post, first frontal plate and second frontal plate; One end of first marker post is fixedly connected with the sighting target substrate; One end of the other end of first marker post and second marker post is hinged; Be hinged with first frontal plate on the termination of first marker post and the second marker post hinged place, be hinged with second frontal plate on the termination of the second marker post other end.The distance of said first frontal plate and the sighting target substrate space of a whole page is 250mm.The distance of said second frontal plate and the sighting target substrate space of a whole page is 400mm.
When the present invention uses the 250mm distance detecting; Only use first marker post, when using the 400mm distance detecting first frontal plate is upwards revolved, revolve second marker post forward again; Make first marker post and second marker post point-blank, the position of adjusting second frontal plate gets final product.
Beneficial effect of the present invention: have two detection distances available when the present invention gives a test of one's eyesight, during detection, detected person's forehead is attached on the frontal plate, because the distance of frontal plate and sighting target substrate is fixed, so the testing result of vision is accurately.The present invention is fit to family and uses very much, and vision that can detection at any time child (student) accomplishes in time to find myopia, in time treatment or myopia correction.
Description of drawings
Fig. 1 is the sketch map (vertical view) that use first marker post that the specific embodiment of the present invention provides gives a test of one's eyesight,
Fig. 2 is that first marker post and second marker post are united the sketch map (vertical view) that use gives a test of one's eyesight,
Fig. 3 is that the A of Fig. 2 is to view (front view of the present invention).
The specific embodiment
The specific embodiment one: combine Fig. 1～Fig. 3 that this embodiment is described; This embodiment comprises sighting target substrate 1, first marker post 2, second marker post 3, first frontal plate 4 and second frontal plate 5; One end of first marker post 2 is fixedly connected with sighting target substrate 1; One end of the other end of first marker post 2 and second marker post 3 is hinged, is hinged with on the termination of first marker post 2 and second marker post, 3 hinged places on the termination of first frontal plate, 4, the second marker posts, 3 other ends and is hinged with second frontal plate 5.
The specific embodiment two: combine Fig. 2 that this embodiment is described, said first frontal plate 4 of this embodiment is 250mm with the distance L of sighting target substrate 1 space of a whole page.Said second frontal plate 5 is 400mm with sighting target substrate 1 space of a whole page apart from V.Other are identical with the specific embodiment one.
Claims (3)
1. one kind with the near vision test type apart from mark post; Comprise sighting target substrate (1), first marker post (2), second marker post (3), first frontal plate (4) and second frontal plate (5); It is characterized in that; One end of first marker post (2) is fixedly connected with sighting target substrate (1); One end of the other end of first marker post (2) and second marker post (3) is hinged, is hinged with first frontal plate (4) on the termination of first marker post (2) and second marker post (3) hinged place, is hinged with second frontal plate (5) on the termination of second marker post (3) other end.
2. according to claim 1 a kind ofly it is characterized in that with the near vision test type apart from mark post, said first frontal plate (4) is 250mm with the distance of sighting target substrate (1) space of a whole page.
3. according to claim 1 a kind ofly it is characterized in that with the near vision test type apart from mark post, said second frontal plate (5) is 400mm with the distance of sighting target substrate (1) space of a whole page.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102958229A CN102415873A (en) | 2010-09-28 | 2010-09-28 | Near vision chart with distance marking rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102958229A CN102415873A (en) | 2010-09-28 | 2010-09-28 | Near vision chart with distance marking rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102415873A true CN102415873A (en) | 2012-04-18 |
Family
ID=45940699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102958229A Pending CN102415873A (en) | 2010-09-28 | 2010-09-28 | Near vision chart with distance marking rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102415873A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107397527A (en) * | 2017-07-26 | 2017-11-28 | 谢阳萍 | A kind of eye eyesight measurement apparatus |
-
2010
- 2010-09-28 CN CN2010102958229A patent/CN102415873A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107397527A (en) * | 2017-07-26 | 2017-11-28 | 谢阳萍 | A kind of eye eyesight measurement apparatus |
| CN107397527B (en) * | 2017-07-26 | 2019-04-30 | 武汉爱尔眼科医院有限公司 | A kind of eye eyesight measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120418 |