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9 February 2011 Human preference in tunable solid state lighting
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Tunable LED illumination systems utilizing digital control can satisfy many user requirements for white and colored light. Such systems provide a powerful entry point for LEDs into general illumination applications. Parameters such as light level and color temperature can be used to change space ambience. Variation of spectral distribution can be used to trade between energy efficiency and color rendition. Studies have been carried out in a controlled laboratory environment and in a "real life" occupied space. This paper presents an exploration of methodologies used to assess subjective, preference-based traits.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jeremy M. Spaulding, Maria R. Thompson, and Robert E. Levin "Human preference in tunable solid state lighting", Proc. SPIE 7954, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XV, 795403 (9 February 2011);

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