Title:
DEVICE FOR INCREASING COLOR RENDERING INDEX OF LED LIGHT SOURCE
Document Type and Number:
WIPO Patent Application WO/2015/165414
Kind Code:
A1
Abstract:
A device for increasing a color rendering index of an LED light source comprises a light source. At least one light filter (20) for reflecting primary light with wavelengths ranging from 500 nm to 540 nm and performing full-transmission processing on primary light of other wave bands is arranged in a white light path channel emitted by the light source, or a certain proportion of fluorescent powder capable of being excited by blue light is coated on a surface layer of a blue LED lamp in the light source, so as to obtain a high color rendering index. The spectrum of certain primary light, in which some part of the spectrum has a negative effect on a CRI, is shaped, and therefore the restoration of the color of the whole light source is improved. The light filter (20) reflects the spectrum of specific wavelengths and transmits the other spectra, so that the CRI is apparently improved, and the device can meet the requirements of a broadcasting station, a sound stage and other scenarios that demand high on a light source.
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Inventors:
ZHANG QUAN (CN)
ZOU SIYUAN (CN)
ZOU SIYUAN (CN)
Application Number:
PCT/CN2015/077891
Publication Date:
November 05, 2015
Filing Date:
April 30, 2015
Export Citation:
Assignee:
APPOTRONICS CHINA CORP (CN)
International Classes:
F21V9/00; F21S2/00; F21V9/40; F21V17/10; G02B5/20; F21Y101/02
Domestic Patent References:
| WO2013147195A1 | 2013-10-03 |
Foreign References:
| CN203880619U | 2014-10-15 | |||
| TW201335546A | 2013-09-01 | |||
| JP2011154895A | 2011-08-11 | |||
| CN102352970A | 2012-02-15 | |||
| JP2010186725A | 2010-08-26 | |||
| CN103175012A | 2013-06-26 | |||
| JP2011199054A | 2011-10-06 | |||
| JP2006236749A | 2006-09-07 |
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