Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12393
Title: Temperature measurement technique for stabilizing the light output of RGB LED lamps
Authors: Qu, X
Wong, SC 
Tse, CK 
Keywords: Color maintenance
Light-emitting-diode (LED) junction temperature measurement
Light-emitting-diode (LED) lighting
Red-green-blue (RGB) LED
Temperature compensation
Issue Date: 2010
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on instrumentation and measurement, 2010, v. 59, no. 3, 5256196, p. 661-670 How to cite?
Journal: IEEE transactions on instrumentation and measurement 
Abstract: The efficiency of light-emitting-diode (LED) lights approaches that of fluorescent lamps. LED light sources find more applications than conventional light bulbs due to their compactness, lower heat dissipation, and real-time color-changing capability. Stabilizing the colors of red-green-blue (RGB) LED lights is a challenging task, which includes color light intensity control using switching-mode power converters, color point maintenance against LED junction temperature change, and limiting LED device temperature to prolong the LED lifetime. In this paper, we present a LED junction temperature measurement technique for a pulsewidth modulation diode forward current controlled RGB LED lighting system. The technique has been automated and can effectively stabilize the color without the need for using expensive feedback systems that involve light sensors. Performance in terms of chromaticity and luminance stability for a temperature-compensated RGB LED system will be presented.
URI: http://hdl.handle.net/10397/12393
ISSN: 0018-9456
EISSN: 1557-9662
DOI: 10.1109/TIM.2009.2025983
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

32
Last Week
0
Last month
0
Citations as of Aug 21, 2017

WEB OF SCIENCETM
Citations

23
Last Week
0
Last month
0
Citations as of Aug 20, 2017

Page view(s)

34
Last Week
0
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.