Light-emitting diode cover lens design for large-scale liquid crystal device television backlight

Jin-Jia Chen, Kai Hung Cheng

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We present a high-performance cover lens for light-emitting diode (LED) light sources to be applied to large-scale liquid crystal device television (LCD-TV) backlight modules. The cover lens with simple structure can redistribute light rays emitted from an LED light source to make the light distribution more extended so that the luminance uniformity of the backlight module can be increased. To gain a better performance, the parameters of the lens structure are optimized using a genetic algorithm. The simulation result shows that using the cover lens can achieve a luminance uniformity of 94.75% and an optical efficiency of 72.29% for a 46-in LCD-TV backlight module.

Original languageEnglish
Article number053003
JournalOptical Engineering
Volume49
Issue number5
DOIs
Publication statusPublished - 2010 May 1

Fingerprint

lens design
Television
Liquid crystals
Light emitting diodes
Lenses
light emitting diodes
liquid crystals
lenses
modules
luminance
Light sources
Luminance
light sources
genetic algorithms
rays
Genetic algorithms
simulation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Cite this

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Light-emitting diode cover lens design for large-scale liquid crystal device television backlight. / Chen, Jin-Jia; Cheng, Kai Hung.

In: Optical Engineering, Vol. 49, No. 5, 053003, 01.05.2010.

Research output: Contribution to journalArticle

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