CN203195660U - Reciting-resistant rotary disc visual chart - Google Patents
Reciting-resistant rotary disc visual chart Download PDFInfo
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- CN203195660U CN203195660U CN 201320206888 CN201320206888U CN203195660U CN 203195660 U CN203195660 U CN 203195660U CN 201320206888 CN201320206888 CN 201320206888 CN 201320206888 U CN201320206888 U CN 201320206888U CN 203195660 U CN203195660 U CN 203195660U
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- disc
- visual chart
- reciting
- backlight
- test panel
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Abstract
The utility model discloses a reciting-resistant rotary disc visual chart and belongs to the field of vision test tools. The reciting-resistant rotary disc visual chart comprises a support (7) and is characterized in that a horizontal rotating shaft (5) is arranged at the upper portion of the support (7), a backlight disc (6) back on to a light source is arranged on the surface of the support (7), a main testing disc (1) which is placed in front of the backlight disc is sleeved on the rotating shaft (5) in a rotatable mode, a front stopping disc (3) is fixed at the front end of the rotating shaft (5) and placed in front of the main testing disc (1), a plurality of displaying windows (4) are formed in the front stopping disc (3) to display E-shaped symbols which are used for testing and arranged on the main testing disc (1), and space formed between two adjacent display windows at intervals is provided with a plurality of auxiliary testing discs (2). Through the reciting-resistant rotary disc visual chart, the main testing disc provided with the E-shaped symbols can be rotated to change facing directions of the E-shaped symbols, and therefore test receivers can be prevented from reciting the visual chart.
Description
Technical field
Prevent reciting disc visual chart, belong to eyesight testing apparatus field.Be specifically related to a kind of by the rotary test dish with change test symbol towards visual acuity chart.
Background technology
In the prior art, visual acuity chart is mainly rectangle, its surface is light-passing board, be provided with " E " type symbol of the usefulness that gives a test of one's eyesight of the different sizes of multirow on the light-passing board from top to bottom, the light-passing board rear portion is generally lamp box, after lamp box opened, the hand-held stock of operator carried out the indication of symbol, finishes the test of vision.But such visual acuity chart has following defective at present: owing to " E " type symbol that is arranged on the test usefulness on the visual acuity chart front panel is non-exchange formula design, so have the tester to the opening of " E " type symbol towards reciting, thereby test result is impacted, make test result lose fair and just property.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of can rotate the main test panel that is provided with " E " type symbol to change " E " symbol towards, thereby prevent the anti-disc visual chart of reciting that the tester recites visual acuity chart.
The technical scheme that its technical problem that solves this utility model adopts is: this anti-disc visual chart of reciting, comprise support, it is characterized in that: described support top is provided with the rotating shaft of level, rotating being sleeved in the rotating shaft of main test panel that the surface is provided with the dish backlight of backlight and is positioned at its place ahead, front block plate is fixed on the front end of rotating shaft, be positioned at main test panel the place ahead, be provided with a plurality of display windows on the front block plate, " E " type symbol that is arranged on the test usefulness on the main test panel is shown, the blank space that adjacent display window interval forms is provided with a plurality of secondary test panels.
Described main test panel center has the centre bore that rotating shaft is passed, and its front is radial eight " E " type symbols that are mutually 45° angle that are provided with take this centre bore as starting point, and two " E " type symbols that are in a straight line are one group of eyesight testing bar.
" E " type symbol in the described eyesight testing bar carries out vision 4.4 ~ 4.7 test usefulness from being followed successively by outside to inside, and another carries out vision 4.8 ~ 5.2 test usefulness from being followed successively by outside to inside.
Described display window is four, is " ten " type and is arranged on the front block plate, and each display window is wide outside and narrow inside and two ends are the design of fillet, respectively is provided with a secondary test panel in four white spaces that adjacent two display window intervals form.
Described secondary test panel is rotatable design, is respectively applied to carry out vision 4.0 ~ 4.3 tests.
Described dish backlight adopts the foam material.
The backlight that described panel surface backlight arranges adopts LED.
Compared with prior art, the beneficial effect that has of the present utility model is:
1, of the present utility model anti-recite disc visual chart in use can by the main test panel that is provided with " E " type symbol is rotated change " E " symbol towards, thereby prevent that the tester from reciting visual acuity chart;
2, four of eyesight testing 4.0 ~ 4.4 larger " E " type-word mothers are set on the secondary test panel on the front block plate, have saved the space of main test panel, secondary test panel also adopts rotatable design simultaneously, has improved the accuracy of test;
3, adopt LED as backlight, improved luminous efficiency, saved the energy;
4, simple in structure, test result is objective and accurate.
Description of drawings
Fig. 1 is the anti-disc visual chart front view of reciting.
Fig. 2 is the anti-left pseudosection of disc visual chart of reciting.
Fig. 3 is front block plate front view.
Fig. 4 is main test panel front view.
Wherein: 1, main test panel 2, secondary test panel 3, front block plate 4, display window 5, rotating shaft 6, dish backlight 7, support.
The specific embodiment
Fig. 1 ~ 4th, most preferred embodiment of the present utility model is described further below in conjunction with 1 ~ 4 pair of this utility model of accompanying drawing:
Shown in Fig. 1 ~ 2, of the present utility modelly anti-recite disc visual chart and formed by following several parts: main test panel 1, front block plate 3, dish backlight 6 and support 7.Support 7 bottoms are provided with three Convenient tables and contact with ground, the protract rotating shaft 5 of the level that is provided with of its top.Main test panel 1, front block plate 3 and dish backlight 6 are equal-sized disk, and main test panel 1 and front block plate 3 be concentric and rotating being sleeved in the rotating shaft 5 by the centre bore that is arranged on its center, and wherein dish 6 backlight is positioned at main test panel 1 rear portion.Be provided with the backlight to front irradiation on dish 6 front end faces backlight, its body is that light tight material is to prevent rearward scattering of light.Main test panel 1 material is the light-passing board identical with the material that has the visual acuity chart panel now, and the light that sends on the dish 6 backlight can pass main test panel 1.After main test panel 1 and dish backlight 6 installations, its border is fixed by lighttight adhesive tape and is integrated.Front block plate 3 is positioned at main test panel 1 the place ahead, is fixed in the rotating shaft 5.
As shown in Figure 3, have four on the front block plate 3 and be the display window 4 that " ten " type distributes, two display windows 4 that are in a straight line separately are one group, and each display window 4 is wide outside and narrow inside and two ends are the shape of fillet.Respectively be provided with a secondary test panel 2 in four white spaces of four display window 4 intervals formation.Four secondary test panels 2 are rotating being installed on the front block plate 3 all, and its center respectively is provided with " E " type symbol that is used for carrying out eyesight testing.In this utility model, the secondary test panel 2 in the upper left corner is for carrying out vision 4.4 test usefulness, and its excess-three secondary test panel 2 is arranged clockwise and is used for successively test vision 4.3 ~ 4.0, or arranges voluntarily as the case may be.
As shown in Figure 4, take its centre bore as starting point, be radial and be provided with eight for testing " E " type symbol of vision on the main test panel 1, be 45° angle between adjacent two.Two " E " type symbols that are in a straight line are one group of eyesight testing bar, in each group eyesight testing bar wherein " E " type symbol carry out vision 4.4 ~ 4.7 tests and use from being followed successively by outside to inside, another carries out vision 4.8 ~ 5.2 test usefulness from being followed successively by outside to inside, make and form four groups of independently eyesight testing bars, the mutual angle at 45 ° of two adjacent groups eyesight testing bar on winner's test panel 1.Front block plate 3 is fixed on after main test panel 1 the place ahead, four display windows 4 that " ten " type distributes of being that are arranged on the front block plate 3 demonstrate separately two groups of eyesight testing bars on the main test panel 1 just, and " E " type symbol of every group of eyesight testing bar matches with display window 4 shape wide outside and narrow inside just from outside to inside the rule of arranging.In use, a certain group of eyesight testing bar is after rotating with main test panel 1, and when another group showed in display window 4, all " E " type symbol side openings in it were towards all changing, thereby reach the purpose that prevents that the tester from reciting visual acuity chart.
Concrete use procedure is as follows: before carrying out eyesight testing, the tester at first opens the backlight that is arranged on the dish 6 backlight, the light transmission master test panel 1 that backlight sends.Being arranged at four groups of eyesight testing bars on the main test panel 1 this moment has wherein two groups can show by the display window 4 on front block plate 3.The tester at first utilizes 2 couples of testers of secondary test panel to carry out the test of vision 4.0 ~ 4.3, then utilizes 1 couple of tester of main test panel to carry out the test of vision 4.4 ~ 5.2, until draw accurately test result.
After finishing a test, the tester can rotate main test panel 1 at random, make " E " of display window 4 interior demonstrations type symbol towards changing, also can to secondary test panel 2 rotate " E " type symbol of changing on it towards, with the accuracy of guaranteeing to test.
In this utility model, what dish 6 backlight adopted is the foam material, has played good shaded effect when alleviating quality.That the backlight on the dish 6 backlight adopts is the LED with higher photoluminescence efficiency, also can adopt other luminous bodys, such as fluorescent tube.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of this utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (7)
1. prevent reciting disc visual chart, comprise support (7), it is characterized in that: described support (7) top is provided with the rotating shaft (5) of level, rotating being sleeved in the rotating shaft (5) of main test panel (1) that the surface is provided with the dish backlight (6) of backlight and is positioned at its place ahead, front block plate (3) is fixed on the front end of rotating shaft (5), be positioned at main test panel (1) the place ahead, be provided with a plurality of display windows (4) on the front block plate (3), " E " type symbol that is arranged on the test usefulness on the main test panel (1) is shown, the blank space that adjacent display window (4) interval forms is provided with a plurality of secondary test panels (2).
2. the anti-disc visual chart of reciting according to claim 1, it is characterized in that: described main test panel (1) center has the centre bore that rotating shaft (5) is passed, its front is radial eight " E " type symbols that are mutually 45° angle that are provided with take this centre bore as starting point, two " E " type symbols that are in a straight line are one group of eyesight testing bar.
3. the anti-disc visual chart of reciting according to claim 2, it is characterized in that: " E " type symbol in the described eyesight testing bar carries out vision 4.4 ~ 4.7 test usefulness from being followed successively by outside to inside, and another carries out vision 4.8 ~ 5.2 test usefulness from being followed successively by outside to inside.
4. the anti-disc visual chart of reciting according to claim 1, it is characterized in that: described display window (4) is four, being " ten " type is arranged on the front block plate (3), each display window (4) is the design of fillet for wide outside and narrow inside and two ends, respectively is provided with a secondary test panel (2) in four white spaces that adjacent two display windows (4) interval forms.
5. according to claim 1 or 4 describedly anti-recite disc visual chart, it is characterized in that: described secondary test panel (2) is rotatable design, is respectively applied to carry out vision 4.0 ~ 4.3 tests.
6. according to claim 1ly anti-recite disc visual chart, it is characterized in that: described dish backlight (6) adopts the foam material.
7. according to claim 1 or 6 describedly anti-recite disc visual chart, it is characterized in that: the backlight that described dish backlight (6) surface arranges adopts LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206888 CN203195660U (en) | 2013-04-22 | 2013-04-22 | Reciting-resistant rotary disc visual chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206888 CN203195660U (en) | 2013-04-22 | 2013-04-22 | Reciting-resistant rotary disc visual chart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203195660U true CN203195660U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320206888 Expired - Fee Related CN203195660U (en) | 2013-04-22 | 2013-04-22 | Reciting-resistant rotary disc visual chart |
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| CN (1) | CN203195660U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137110A (en) * | 2016-06-25 | 2016-11-23 | 利辛县眼病防治所 | A kind of visual acuity chart and using method thereof |
| CN106361261A (en) * | 2016-09-22 | 2017-02-01 | 东莞市联洲知识产权运营管理有限公司 | Ring type medical eyesight test device |
| CN107260119A (en) * | 2017-06-23 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of Vission detector |
| CN107334452A (en) * | 2017-06-23 | 2017-11-10 | 苏州奥特科然医疗科技有限公司 | A kind of vision test disk |
-
2013
- 2013-04-22 CN CN 201320206888 patent/CN203195660U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137110A (en) * | 2016-06-25 | 2016-11-23 | 利辛县眼病防治所 | A kind of visual acuity chart and using method thereof |
| CN106137110B (en) * | 2016-06-25 | 2018-06-22 | 利辛县眼病防治所 | A kind of visual chart and its application method |
| CN106361261A (en) * | 2016-09-22 | 2017-02-01 | 东莞市联洲知识产权运营管理有限公司 | Ring type medical eyesight test device |
| CN107260119A (en) * | 2017-06-23 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of Vission detector |
| CN107334452A (en) * | 2017-06-23 | 2017-11-10 | 苏州奥特科然医疗科技有限公司 | A kind of vision test disk |
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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: 20130918 Termination date: 20140422 |