16 May 2007 Color tunable hybrid lamp: LED-incandescent and LED-fluorescent
Author Affiliations +
Proceedings Volume 6422, Sixth Symposium Optics in Industry; 64220N (2007) https://doi.org/10.1117/12.742582
Event: Sixth Symposium Optics in Industry, 2007, Monterrey, Mexico
Abstract
Light-emitting diodes (LEDs) can be chosen to emit light in a wide variety of highly saturated colors. As a consequence, a hybrid lamp assembled with colored LEDs and with one incandescent or fluorescent source easily allows the user to dynamically select the desired color point without additional filters, with high color rendering index, and at a low cost. We measure some properties of a color tunable lamp that uses both colored LEDs and an incandescent or a fluorescent source. For the LED-incandescent type, we assemble an array of blue LEDs with a typical incandescent bulb source, and to assemble a LED-fluorescent type we used an array of red LEDs with a commercially available compact fluorescent lamp. Incandescent and fluorescent sources have a fixed intensity, while LED intensities are adjusted to tune color. For LED-incandescent lamps, our experimental data show that the correlated color temperature (CCT) can be linearly tuned with the electric current of the LED array. The LED-fluorescent lamp exhibits a CCT that exponentially varies with the drive current of red LEDs.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ivan Moreno, Ivan Moreno, } "Color tunable hybrid lamp: LED-incandescent and LED-fluorescent", Proc. SPIE 6422, Sixth Symposium Optics in Industry, 64220N (16 May 2007); doi: 10.1117/12.742582; https://doi.org/10.1117/12.742582
PROCEEDINGS
7 PAGES


SHARE
RELATED CONTENT

LED light source used in cultural relic illumination
Proceedings of SPIE (September 17 2002)
High power LEDs and the organization of light
Proceedings of SPIE (February 22 2006)
Mixing colored LED sources
Proceedings of SPIE (November 12 2003)

Back to Top