Spectral design considerations for white LED color rendering

Yoshi Ohno

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Spectral design considerations for white LED color rendering

机译：Spectral design considerations for white LED color rendering

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White LED spectra for general lighting should be designed for high luminous efficacy as well as good color rendering. Multichip and phosphor-type white LED models were analyzed by simulation of their color characteristics and luminous efficacy of radiation, compared with those of conventional light sources for general lighting. Color rendering characteristics were evaluated based on the CIE Color Rendering Index (CRI), examining not only R_(a) but also the special color rendering indices R_(i), as well as on the CIELAB color difference (DELTA)E_(ab) for the 14 color samples defined in CIE 13.3. Several models of three-chip and four-chip white LEDs as well as phosphor-type LEDs are optimized for various parameters, and some guidance is given for designing these white LEDs. The simulation analysis also demonstrated several problems with the current CRI, and the need for improvements is discussed.

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来源
《Optical Engineering》 |2005年第11期|111302-1-111302-9-0|共9页
作者
Yoshi Ohno;
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作者单位

National Institute of Standards and Technology 100 Bureau Drive Gaithersburg, Maryland 20899;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
关键词
color rendering; colorimetry; CRI; lighting; luminous efficacy; solidstate lighting; LED; white LED;

Spectral design considerations for white LED color rendering

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