Paper
24 September 2008 SSL design with LED binning tolerances
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Abstract
Illumination systems suffer from tolerances like all optical systems, including gross, process, roughness, and system errors. A common system error in solid-state lighting (SSL) luminaires is source variation due to variation within selected LED bins. Tolerances of LED bins include peak or dominant wavelength and flux output. These bin variations lead to chromatic shifts in the resulting illumination distribution when discrete spectral emitters are mixed to provide a desired color. Software tools are developed to provide ease in inspection of color mixing of discrete spectral LEDs taking into account the selected bins for each LED. This tool is a graphical user interface (GUI) of standard LED products from a series of LED manufacturers. Using this tool the color mixing of red, green, and blue LEDs are presented, showing that there is a color shifts in the resulting distribution due to binning variation. Optics that have the potential to alleviate the color shifts due to LED bin tolerances are presented.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. John Koshel "SSL design with LED binning tolerances", Proc. SPIE 7103, Illumination Optics, 710303 (24 September 2008); https://doi.org/10.1117/12.801180
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CITATIONS
Cited by 3 scholarly publications.
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KEYWORDS
Light emitting diodes

Tolerancing

Hybrid optics

Solid state lighting

Optics manufacturing

Optical design

Colorimetry

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