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Color Quality and Spectra

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Successful commercialization of LED products for general illumination will depend on a number of factors, such as cost, lifetime, intensity, luminous efficacy and color quality.

Dr. Yoshi Ohno and Dr. Wendy Davis, National Institute of Standards and Technology

The primary motivation for development of solid-state lighting is the potential for huge energy savings. The energy efficiency of a light source is measured by luminous efficacy (lumens per watt), a component of which is the luminous efficacy of radiation (ratio of luminous flux to optical power or radiant flux). The luminous efficacy of radiation (lm/W) is the theoretical maximum luminous efficacy, determined solely by the spectrum, not considering losses from the conversion of electricity into light. Color quality is a critical characteristic of light sources for general lighting....Read full article

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