11 September 2006 Color reproduction for LED-based general lighting
Author Affiliations +
Solid State Lighting is becoming increasingly more advanced, both in terms of lumen output as well as energy efficiency. However, implementation in color consumer lighting products, such as the Philips Ambilight television sets, still requires improvements in both color reproduction as well as intensity uniformity. To build a lighting system capable of correctly reproducing a large color spectrum, 3 primary colored LEDs are required. However, this approach causes problems. In particular, the generation of a white color without color fringes is difficult to implement, as the total amount of light from each primary color should ideally be identical at each position within the light bundle. Our paper focuses on systems using a limited number of high power LEDs. The lumen output of these LEDs is such that even a single red, green and blue LED together can deliver the required lumen output for certain applications. To optimize performance for both luminance and color uniformity we investigated several design options. Ray tracing simulations are compared to the performance of real size prototypes, and recommendations are given for the design of color lighting systems.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. A. Salters, B. A. Salters, M. P. C. M. Krijn, M. P. C. M. Krijn, "Color reproduction for LED-based general lighting", Proc. SPIE 6338, Nonimaging Optics and Efficient Illumination Systems III, 63380F (11 September 2006); doi: 10.1117/12.680515; https://doi.org/10.1117/12.680515


Color mixing collimating lamp based on RGB LEDs
Proceedings of SPIE (October 10 2012)
Color control of a lighting system using RGBW LEDs
Proceedings of SPIE (January 25 2011)
Optical metrology for LEDs and solid state lighting
Proceedings of SPIE (February 09 2006)
Large, thin, flexible, and low-cost light emitting surfaces
Proceedings of SPIE (September 13 2007)
Color-consistent LED modules for general lighting
Proceedings of SPIE (February 03 2009)

Back to Top