Novel technique for implementation of Color Algorithm for LED used for general illumination.

Shailesh, K R and Tanuja , S (2009) Novel technique for implementation of Color Algorithm for LED used for general illumination. In: 2009 IEEE International Advance Computing Conference (IACC 2009), 6-7 March 2009, Patiala.

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Abstract

LED light sources are finding more applications than conventional light bulbs due to their compactness, lower heat dissipation, and most importantly, real-time color changing capability. Color mixing provides an important means to obtain white light of controlled color temperature by combining RGB arrays of LED’s. The basic principle of color mixing relies in the utilization of a strong enough diffuser where the angular spread of the diffuser exceeds the angular spread of the LED sources. Accurate control of colors for RGB LED lights is a challenging task, which includes optical color mixing, color light intensity control and color point maintenance due to LED junction temperature change and device aging. This paper evaluates a color control algorithm for LED lights with independently changeable illuminance. The algorithm adjusts the light intensity to obtain desired color with alterable illuminance. To verify the validity of the algorithm, it was applied to control of a LED module (Red, Green, Blue, and White).

Item Type: Conference or Workshop Item (Paper)
Subjects: Engineering > MIT Manipal > Computer Science and Engineering
Engineering > MIT Manipal > Electrical and Electronics
Depositing User: Users 24 not found.
Date Deposited: 22 Jun 2011 06:45
Last Modified: 22 Jun 2011 06:49
URI: http://eprints.manipal.edu/id/eprint/325

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