CN202776257U - Light-emitting diode (LED) medical vision tester - Google Patents
Light-emitting diode (LED) medical vision tester Download PDFInfo
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- CN202776257U CN202776257U CN 201220264721 CN201220264721U CN202776257U CN 202776257 U CN202776257 U CN 202776257U CN 201220264721 CN201220264721 CN 201220264721 CN 201220264721 U CN201220264721 U CN 201220264721U CN 202776257 U CN202776257 U CN 202776257U
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Abstract
The utility model relates to a vision test chart, a vision chart back lighting technology, a vision chart control system and a light-emitting diode (LED) solid state lighting energy-saving technology, in particular to an LED medical vision tester. The LED medical vision tester comprises a test-object board, a light source, a main body machine shell, and a protective cover. A plastic rubber outer shell serves as the main body machine shell. The plastic rubber outer shell and a bottom plate form a main body closed outer shell of the tester, and the main body closed outer shell is mainly used for protecting and supporting the vision tester. The light source is formed by a plurality of LED light sources evenly distributed on a substrate in the main body machine shell. The protective cover is made of transparent acrylic. The vision tester has the advantages of being remote-controllable, convenient and simple to operate, energy-saving, and good in use prospect on the basis that testing is multifunctional and the brightness of the surface of the test-object board is uniform and constant.
Description
Technical field
The present invention relates to eye chart, visual acuity chart back lighting technology, visual acuity chart control system and LED solid-state illumination power-saving technology, relate in particular to the medical viseon tester of a kind of LED of meter.
Background technology
Existing visual acuity chart adopts common paper structure usually.Because the vision of human eye is also relevant with the brightness and contrast of recognition object, also needs to cooperate extraneous auxiliary light to guarantee to have on the visual acuity chart one during the vision detection and identify more uniformly brightness.This illumination now mainly still adopts common fluorescent tube or CCFL as backlight on the market, and the identification luminance uniformity of visual acuity chart is not very high like this.
Now general visual acuity chart mainly is for detection of myopia and hypermetropia, but along with the development of present society, people detect vision and also have higher requirement, and comprise achromatopsia, and color weakness, astigmatism all need by other instruments or equipment is auxiliary could further detect.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, the invention provides following technical scheme and solve its technical problem:
The medical viseon tester of LED, this viseon tester comprise sighting target panel, light source and main body housing and supplementary protection cover; Adopt plastic shell as main body housing, described plastic shell and base plate form the main body closure of this tester, be mainly viseon tester the protection supporting role is provided, and its light source is to be evenly distributed on several LEDs light sources of establishing in the described main body housing on the substrate; The material of described protective cover is transparent acrylic.
Further in the present invention, the electric current of the led light source of this viseon tester is subjected to Based Intelligent Control.
Further in the present invention, its sighting target panel is compound sighting target panel, comprises nearly hypermetropia test, anerythrochloropsia assessment, and astigmatism test.
Further in the present invention, one of antimetropia vision sighting target of its sighting target panel has adopted more accurately blue formula ring, so that the accurate evaluation vision.
Further in the present invention, described sighting target panel is positioned at main body housing foremost; Described led light source is arranged in the back of lamp box uniformly, after making the exiting surface of lamp box and light source pull open certain distance, the light of the light source of described each LED fully mixes, diffuser plate via the lamp box surface transmits, thereby guarantee that the observer can not see through sighting target and observe the luminous bright spot of light source, but show uniform area source attribute.
Further in the present invention, its sighting target panel is divided into six blocks, and can carry out independently switching over by the Receiver on the main frame; The LED lamp that covers under these six blocks uses dividing plate to separate, so that each block can be controlled separately brightness.
Further in the present invention, can use remote controller independently to carry out and main frame between communication, finish all functions of main frame.
Further in the present invention, the brightness of its sighting target can be carried out independent adjustment by light-control knob.
The present invention mainly uses this solid-state illumination light source of LED as the floor light light source of visual acuity chart system, by system combination, with Based Intelligent Control and LED solid-state illumination backlight technology, and myopia, hypermetropia, achromatopsia, the detection meanss such as color weakness and astigmatism are integrated into a system, as the professional equipment of vision detection.
At first make the lamp box take LED as backlight.With LED as backlight, single power of performance led light source is little, the characteristics that brightness is high, be arranged in uniformly the back of lamp box, after the exiting surface of lamp box and light source pulled open certain distance like this, the light of each light source of LED fully mixed, and transmitted via the diffuser plate on lamp box surface, assurance reaches two functions: 1, the surperficial each point brightness of diffuser plate is even, and this uniform array of benefiting from LED is arranged; 2, light source point can not appear: because visual acuity chart and LED have pulled open certain distance, the light of LED mixes mutually, when light sees through the diffuser plate surface via refraction and the scattering of the diffusion particle of diffuser plate, the light source point of LED itself will be blured fully, watch from the outside, just look like light be by diffuser plate itself emit the same.By above-mentioned assurance, just can produce uniform area source at 2.
Detect in order better to integrate vision, this visual acuity chart has also increased other detection module except possessing basic myopia and hypermetropia measuring ability: 1, color weakness detects sighting target; 2, anerythrochloropsia detects sighting target; 3, astigmatism detects sighting target; By the electric current that is positioned at the LED on the substrate is carried out intelligentized control, just can realize the intellectuality control to each sighting target brightness.
Owing to increased the vision detection module, in order to reduce the unnecessary interference of tested vision object, to mutually isolating between each detection module, for current tester, except the module that needs detect, the brightness of non-detection module is in off state.
In order to simplify switching time and the operating procedure between each test module, opening and shutting off of module carried out intellectuality integrate, except the button of test panel itself can be realized control, can also be via remote controller
Even can also unify for the brightness that guarantees to use for a long time between each module, also added fine adjustment function, can segment fine setting to the acquiescence brightness of each module.
Sighting target figure directly is installed to LED lamp box inside, and the surface of sighting target figure also has the acrylic protective cover of layer of transparent, and whole like this sighting target just becomes as a whole with the LED-backlit lamp box, has consisted of the medical viseon tester of LED.
In sum, the invention has the beneficial effects as follows: the present invention has that test function is various, the sighting target panel surface brightness is evenly constant, and remote-controlled operation is portable simple, also has simultaneously the effects such as energy-conservation, therefore has better prospect of the application.
Description of drawings
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
Fig. 1 is axonometric chart of the present invention;
Fig. 2 is three-dimensional exploded view of the present invention;
Fig. 3 is the transverse section cutaway view of Fig. 1;
Fig. 4 is this sighting target pattern;
Fig. 5 is back light scattergram of the present invention;
Fig. 6 is circuit structure schematic diagram of the present invention;
Fig. 7 is remote controller axonometric chart of the present invention;
Fig. 8 is the three-dimensional exploded view of remote controller of the present invention;
Fig. 9 is the A section enlarged drawing of Fig. 6;
Figure 10 is the B section enlarged drawing of Fig. 6;
Figure 11 is the C section enlarged drawing of Fig. 6;
Figure 12 is the D section enlarged drawing of Fig. 6.
Accompanying drawing sign: one of baffle 01, sighting target panel shaping piece 02, sighting target panel 03, housing main body 04, light division board 06, substrate P CB plate 07, base plate 08, Receiver 09, display lamp 10, switch 11, DC joint 12, light-control knob 13, over cap 14, led light source 15, sighting target 16, sighting target 2 17, sighting target 3 18, sighting target 4 19, remote controller loam cake 20, remote controller key 21, Infrared Lens 22, remote controller lower cover 23 and battery cover board 24.
The specific embodiment
Shown in 4, the medical viseon tester of LED, this viseon tester comprise sighting target panel 03, light source and main body housing and supplementary protection cover 01.Wherein, plastic shell 04, the main body closure with base plate 08 composition tester is mainly viseon tester the protection supporting role is provided; Led light source 15 produces the light of even high-quality, is dispersed throughout on the substrate P CB plate 07, and pcb board 07 is mainly the LED power supply; 06 is the light division board, outer surface spraying light diffuse-reflective material, and sighting target panel 03, the sighting target symbol of measuring vision is printed on this plate; Sighting target panel shaping piece 02, the surface is light absorbent; Adding protective cover 01 is transparent acrylic; Press button 15 is the control change-over switch of sighting target, can make control to the open and close of each module of tester; Receiver 09 is infrared receiver probe, receives the control signal from 7 remote controller shown in the figure; Display lamp 10 is the working station indicator of tester, and is yellow during work, green during standby; DC joint 12 is the power supply interface of main frame; Switch 11 is the physical switch of main frame power supply; Light-control knob 13 can be regulated the LED brightness of each sighting target module of tester, thereby adjusts the brightness of sighting target, and over cap 14 is the baffle of light-control knob 13.
Referring to Fig. 5, the circuit theory diagrams of whole tester, the bare bones of this schematic diagram be can guarantee on the substrate 07 in the Liu Da district the drive current that passed through of all led light sources 15 all be consistent, and can regulate respectively .. by light-control knob 13 to the electric current in the Liu Da district
Referring to Fig. 6, the sighting target test symbol, one of sighting target 16 is the grade of test myopia and distance vision; 4 19 grades for the test astigmatism of sighting target; 3 18 grades for the test anerythrochloropsia of sighting target, 2 17 of sighting target is the grade of test eye local ghost
Referring to Fig. 7 and 8, the remote controller main body, remote controller loam cake 20 is closely buckled on the remote controller lower cover 23, and remote controller key 21 is each module switch of tester and switching key; Infrared Lens 22 is responsible for and will be launched after the remote signal focusing; Battery cover board 24 is closely buckled on the lower cover 23, guarantees to protect battery not fall down.
Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. medical viseon tester of LED, this viseon tester comprises sighting target panel (03), light source and main body housing and supplementary protection cover (01); It is characterized in that: adopt plastic shell (04) as main body housing, described plastic shell (04) and base plate (08) form the main body closure of this tester, be mainly viseon tester the protection supporting role is provided, its light source is for being evenly distributed on several LEDs light sources (15) of establishing in the described main body housing on the substrate (07); The material of described protective cover (01) is transparent acrylic.
2. the medical viseon tester of LED as claimed in claim 1 is characterized in that the electric current of the led light source (15) of this viseon tester is subjected to Based Intelligent Control.
3. the medical viseon tester of LED as claimed in claim 1 or 2 is characterized in that its sighting target panel (03) is compound sighting target panel, comprises nearly hypermetropia test, anerythrochloropsia assessment, and astigmatism test.
4. the medical viseon tester of LED as claimed in claim 3 is characterized in that one of the antimetropia vision sighting target (16) of its sighting target panel (03) has adopted more accurately blue formula ring, so that the accurate evaluation vision.
5. the medical viseon tester of LED as claimed in claim 1 or 2, it is characterized in that described sighting target panel (03) is positioned at main body housing foremost, and described adding, be provided with the surperficial sighting target panel shaping piece (02) of light absorbent that is between the protective cover (01); Between described substrate (07) and its sighting target panel (03) light division board (06) is set, this division board outer surface spraying light diffuse-reflective material; Described led light source (15) is arranged in the back of main body housing uniformly, after making the exiting surface of main body housing and light source pull open certain distance, the light of the light source of described each LED fully mixes, diffuser plate via the main body housing surface transmits, thereby guarantee that the observer can not see through sighting target and observe the luminous bright spot of light source (15), but show uniform area source attribute.
6. the medical viseon tester of LED as claimed in claim 3 is characterized in that described sighting target panel (03) is positioned at main body housing foremost, and described adding is provided with the surperficial sighting target panel shaping piece (02) of light absorbent that is between the protective cover (01); Between described substrate (07) and its sighting target panel (03) light division board (06) is set, this division board outer surface spraying light diffuse-reflective material; Described led light source (15) is arranged in the back of lamp box uniformly, after making the exiting surface of lamp box and light source pull open certain distance, the light of the light source of described each LED fully mixes, diffuser plate via the lamp box surface transmits, thereby guarantee that the observer can not see through sighting target and observe the luminous bright spot of light source (15), but show uniform area source attribute.
7. the medical viseon tester of LED as claimed in claim 4 is characterized in that described sighting target panel (03) is positioned at main body housing foremost, and described adding is provided with the surperficial sighting target panel shaping piece (02) of light absorbent that is between the protective cover (01); Between described substrate (07) and its sighting target panel (03) light division board (06) is set, this division board outer surface spraying light diffuse-reflective material; Described led light source (15) is arranged in the back of lamp box uniformly, after making the exiting surface of lamp box and light source pull open certain distance, the light of the light source of described each LED fully mixes, diffuser plate via the lamp box surface transmits, thereby guarantee that the observer can not see through sighting target and observe the luminous bright spot of light source (15), but show uniform area source attribute.
8. the medical viseon tester of LED as claimed in claim 7 is characterized in that its sighting target panel (03) is divided into six blocks, and can carry out independently switching over by the Receiver on the main frame (09); The LED lamp that covers under these six blocks uses dividing plate to separate, so that each block can be controlled separately brightness.
9. the medical viseon tester of LED as claimed in claim 8, it is characterized in that using remote controller independently to carry out and main frame between communication, finish all functions of main frame.
10. the medical viseon tester of LED as claimed in claim 9 is characterized in that the brightness of its sighting target can be carried out independent adjustment by light-control knob (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264721 CN202776257U (en) | 2012-06-06 | 2012-06-06 | Light-emitting diode (LED) medical vision tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264721 CN202776257U (en) | 2012-06-06 | 2012-06-06 | Light-emitting diode (LED) medical vision tester |
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| Publication Number | Publication Date |
|---|---|
| CN202776257U true CN202776257U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220264721 Expired - Fee Related CN202776257U (en) | 2012-06-06 | 2012-06-06 | Light-emitting diode (LED) medical vision tester |
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| Country | Link |
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| CN (1) | CN202776257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805608A (en) * | 2012-06-06 | 2012-12-05 | 浙江铭洋照明科技股份有限公司 | Medical LED (light emitting diode) vision test instrument |
-
2012
- 2012-06-06 CN CN 201220264721 patent/CN202776257U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805608A (en) * | 2012-06-06 | 2012-12-05 | 浙江铭洋照明科技股份有限公司 | Medical LED (light emitting diode) vision test instrument |
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| Date | Code | Title | Description |
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| 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: 20130313 Termination date: 20130606 |