CN2734136Y - Visual angel measuring device - Google Patents
Visual angel measuring device Download PDFInfo
- Publication number
- CN2734136Y CN2734136Y CN 200420026563 CN200420026563U CN2734136Y CN 2734136 Y CN2734136 Y CN 2734136Y CN 200420026563 CN200420026563 CN 200420026563 CN 200420026563 U CN200420026563 U CN 200420026563U CN 2734136 Y CN2734136 Y CN 2734136Y
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- Prior art keywords
- shear mechanism
- desktop
- straight
- handle
- point
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Abstract
The utility model discloses a visual angel measuring device comprising a panel labeled angle protractor graduate, a desktop labeled mandible anchor point, a shear mechanism between the panel and the desktop, and the origin point of the angle protractor is above the mandible anchor point. The shear mechanism is composed of two hinged straight bars, the straight bar hinge point of the shear mechanism is in the right ahead of the mandible anchor point, a dual-color sphere is arranged in the tail end of the straight bar of the shear mechanism, a downward handle is arranged in the middle position of the straight bar, and a circular arc groove is arranged in the desktop in the corresponding position of the handle. The handle can travel through the groove and slide in the groove. The visual angel measuring device can accurately the point of view limit value of two eyes of people, and the visual angel measuring device can make people to sufficiently know the correlative knowledge of physiological science.
Description
One, technical field
This utility model relates to a kind of sight test means, the definite visual angle measuring instrument of saying so.
Two, background technology
The visual angle of eyes is different from the visual field, is following the observed scope of energy of situation of not rotating at eyes.In general, people's visual angle is 120 °, and effective angle is about 60 °, pays close attention to the angle and probably has only the several years.
There is the shallow funnel-form dolly dimple district of the about 2mm of a diameter in utmost point portion behind the retina, is called macula lutea, and this is to contain abundant phylloxanthin and gain the name owing to this district.There is a little recessed central fovea of macula that is in its central authorities, macular area does not have blood vessel, but because of containing in the pigment epithelium cell than polychrom, therefore color is darker under ophthalmoscope, and recess visible reflective spot in center is called foveal reflex, and it is the sharpest position of vision on the retina.The people wants to see clearly object within the vision, must rotate eyeball, makes to fall on the amphiblestroid macula lutea after covering the refraction of light through pupil and crystalline lens that object penetrates.If can not satisfy above-mentioned condition, then eyes only can be seen the existence of object, can not differentiate it and be what on earth, even can not differentiate the color of object.
But the introduction of this physiological knowledge also only only limits to the books literal at present, does not see demonstration, the measuring device of visual pattern.
Three, utility model content
Goal of the invention of the present utility model is to remedy the blank that prior art exists, and a kind of visual angle measuring instrument is provided.
This utility model visual angle measuring instrument, comprise and indicate the graduated panel of protractor, indicate the desktop of lower jaw anchor point, shear mechanism between panel and the desktop, the initial point of protractor is positioned at the top of lower jaw anchor point, shear mechanism is made of hinged two straight-bars, the straight-bar hinge junction point of shear mechanism is positioned at the dead ahead of lower jaw anchor point, the terminal set double-colored spheroid of the straight-bar of shear mechanism, there is downward handle in the straight-bar centre position, desktop is having the circular arc fluting with the handle correspondence position, and handle passes fluting and can slide in fluting.
This utility model visual angle measuring instrument, the initial point of protractor is arranged on tester's the residing position of eyes (the lower jaw anchor point top of desktop), the tester moves the position that the downward handle in shear mechanism straight-bar centre position changes the terminal double-colored beads of two straight-bars, and the angle in the time of can seeing the color of the terminal spheroid of two straight-bars clearly by the tester between two balls and the eyes line is demarcated its visual angle ultimate value.
Four, description of drawings
Fig. 1 is this utility model visual angle measuring instrument vertical view;
Fig. 2 is this utility model visual angle measuring instrument front view.
Five, the specific embodiment
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
As Fig. 1 or 2, this utility model visual angle measuring instrument comprises indicating the graduated panel 1 of protractor, indicates the desktop 2 of lower jaw anchor point 6, the shear mechanism between panel 1 and the desktop 2.The initial point of protractor be positioned at lower jaw anchor point 6 directly over, shear mechanism is made of hinged two straight-bars 3, the straight-bar hinge junction point 8 of shear mechanism is positioned at the dead ahead of lower jaw anchor point 6, the terminal set double-colored spheroid 4 of the straight-bar of shear mechanism, there is downward handle 5 in straight-bar 3 centre positions, desktop 2 is having circular arc fluting 7 with handle 5 correspondence positions, and handle 5 passes fluting 7 and can slide in fluting 7.
During use, the tester moves the position that the downward handle 5 in shear mechanism straight-bar centre position changes the terminal double-colored bead 4 of two straight-bars, in the time of can seeing the color of the terminal spheroid 4 of two straight-bars clearly by the tester between two balls and the eyes angle of line demarcate its visual angle ultimate value, this value can read out by the protractor on the desktop 1.
Claims (1)
1, a kind of visual angle measuring instrument, comprise and indicate the graduated panel of protractor (1), indicate the desktop (2) of lower jaw anchor point (6), shear mechanism between panel (1) and the desktop (2), it is characterized in that: the initial point of protractor be positioned at lower jaw anchor point (6) directly over, shear mechanism is made of hinged two straight-bars (3), the straight-bar hinge junction point (8) of shear mechanism is positioned at the dead ahead of lower jaw anchor point (6), the terminal set double-colored spheroid (4) of the straight-bar of shear mechanism, there is downward handle (5) in straight-bar (3) centre position, desktop (2) is having circular arc fluting (7) with handle (5) correspondence position, and handle (5) passes fluting (7) and can slide in fluting (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026563 CN2734136Y (en) | 2004-04-26 | 2004-04-26 | Visual angel measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026563 CN2734136Y (en) | 2004-04-26 | 2004-04-26 | Visual angel measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2734136Y true CN2734136Y (en) | 2005-10-19 |
Family
ID=35264019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420026563 Expired - Fee Related CN2734136Y (en) | 2004-04-26 | 2004-04-26 | Visual angel measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2734136Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545746C (en) * | 2006-12-01 | 2009-09-30 | 鸿富锦精密工业（深圳）有限公司 | Optical look angle measuring systems and measuring method thereof |
| CN105588540A (en) * | 2014-11-03 | 2016-05-18 | 中国航空工业集团公司西安飞机设计研究所 | Vision angle and vision field measurement method for drivers |
| CN113018124A (en) * | 2021-03-02 | 2021-06-25 | 常州市第一人民医院 | Rehabilitation device for unilateral neglect of patient |
-
2004
- 2004-04-26 CN CN 200420026563 patent/CN2734136Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545746C (en) * | 2006-12-01 | 2009-09-30 | 鸿富锦精密工业（深圳）有限公司 | Optical look angle measuring systems and measuring method thereof |
| CN105588540A (en) * | 2014-11-03 | 2016-05-18 | 中国航空工业集团公司西安飞机设计研究所 | Vision angle and vision field measurement method for drivers |
| CN105588540B (en) * | 2014-11-03 | 2018-03-02 | 中国航空工业集团公司西安飞机设计研究所 | A kind of driver visual angle and visual field measuring method |
| CN113018124A (en) * | 2021-03-02 | 2021-06-25 | 常州市第一人民医院 | Rehabilitation device for unilateral neglect of patient |
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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 |