Color tunable hybrid lamp: LED-incandescent and LED-fluorescent

Ivan Moreno

doi:10.1117/12.742582

16 May 2007 Color tunable hybrid lamp: LED-incandescent and LED-fluorescent

Ivan Moreno

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.

Citation Download Citation

Ivan Moreno "Color tunable hybrid lamp: LED-incandescent and LED-fluorescent", Proc. SPIE 6422, Sixth Symposium Optics in Industry, 64220N (16 May 2007); https://doi.org/10.1117/12.742582

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available