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LED device chroma spatial distribution quick tester and test method

A technology of LED devices and chromaticity space, applied in the direction of testing optical performance, etc., can solve the problems of unfavorable product quality, difficult quality indicators of white LED devices, etc., and achieve the effects of high test efficiency, simple structure and good versatility

Inactive Publication Date: 2013-10-02
FOSHAN MULTI SPECTRUMS OPTOELECTRONICS TECHCO
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, the testing instruments in the LED industry are only goniophotometers for LED lamps or LED light sources, and the chromaticity spatial distribution testing instruments for LED devices are still blank. This is very difficult for evaluating the quality indicators of white LED devices, which is not conducive to timely discovery Product quality problems, this problem needs to be solved urgently in the industry

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  • LED device chroma spatial distribution quick tester and test method
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  • LED device chroma spatial distribution quick tester and test method

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Embodiment Construction

[0028] The present invention and its beneficial technical effects will be further described in detail below in conjunction with the accompanying drawings and preferred specific embodiments.

[0029] see Figure 1~Figure 5 , as can be seen from the figure, the LED device chromaticity spatial distribution rapid tester includes a dark box 1, which is provided with a cover 2 that can be opened and closed, and an optical fiber probe 3 that collects and transmits the light emitted by the LED device 20 is provided in the dark box 1 , at least one grating plate 7 for preventing stray light interference, a fixture 4 for placing the LED device 20 to be tested, a rotating device for fixing the fixture 4 and driving the fixture 4 to rotate, and a spectrometer 8 connected with the fiber optic probe 3; the fiber optic probe 3 and the installation The light-emitting part 21 of the LED device 20 to be tested on the fixture 4 is horizontally opposite to each other; the grating plate 7 is arra...

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Abstract

The invention discloses an LED (Light Emitting Diode) device chroma spatial distribution quick tester and a test method. A retractable box cover is arranged on a camera obscura of the tester; a fibre-optics probe for collecting and transmitting light rays sent by the LED device, a spectrograph connected with the fibre-optics probe, raster plates allowing part of the light rays to go through, C-Gamma shaft rotary devices for placing the to-be-tested LED device, a clamp and a control system are arranged in the camera obscura. The test method comprises the following steps: placing test tools such as the to-be-tested LED device, the fibre-optics probe for collecting and transmitting optical signals and a constant current power supply for supplying power to the to-be-tested LED device in the camera obscura; mounting the to-be-tested LED device in the test clamp to be rotated with two shafts to form a semi-spherical surface direction to test. The tester and the method have the advantages that an instrument and a method for measuring the LED spatial chroma distribution are provided; chroma data acquisition of a plurality of light-emitting surfaces to the to-be-tested LED can be automatically carried out; the structure is simple; the cost is low; the testing efficiency is high; the universality is good; the detection precision is high; the manual work can be replaced; the labor intensity and labor cost can be reduced.

Description

Technical field [0001] The invention involves a LED device detection device, especially for a LED device color space distribution test instrument and testing method. Background technique [0002] With the development of LED technology, LED lights gradually replace traditional light bulbs, especially white light LEDs will become the mainstream light source for future general lighting.At present, the white -light LED produced by commercialized, in addition to some red or green fluorescent powder, is generally made of Blu -ray LED chip and yellow fluorescent powder.Due to the uneven distribution of LED chip light and the inconsistent fluorescent powder coating in the packaging of LED devices, the current presence of the current white LED device in the space distribution of light is uneven.The unevenness of the color distribution is a very important indicator of evaluating the quality of the white LED device. [0003] At present, the Test instrument in the LED industry only has a dis...

Claims

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Application Information

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IPC IPC(8): G01M11/02
Inventor 单忠频陈树钊陈高洋钟土基
Owner FOSHAN MULTI SPECTRUMS OPTOELECTRONICS TECHCO
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