Design a LED coupler to collocate with a light guide plate for Illumination

Tun Chien Teng, Li Wei Tseng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With progress in the LED luminous efficiency, the LED gradually expands the scope of application from the backlight to general lighting. In the application of the backlight, a light guide plate (LGP) is used to guide the LED light and emits the light uniformly from its surface to achieve a uniform planar light source. Except for the merit of slim volume, the LGP can prevent the LED light from directly entering the eyes resulting in glare; thereby the LGP is also used for general lighting applications, especially for the high-directionality lighting with slim volume. For the illumination, the prescribed distribution of the light emitted from the LGP had better modulated by both the microstructure on the LGP surface and a LED lens/coupler. In general, distribution of the light emitted from the LED is partially adjusted by the LED lens/coupler before the light entering the LGP. In this study we designed a LED coupler to collocate with two types of LGPs so that the LGP can uniformly emits the highly-collimated light or the light with the prescribed intensity distribution, which can be used for the backlight or lighting application, respectively.

Original languageEnglish
Title of host publicationThirteenth International Conference on Solid State Lighting
EditorsJianzhong Jiao, Matthew H. Kane, Nikolaus Dietz, Jian-Jang Huang
PublisherSPIE
ISBN (Electronic)9781628412178
DOIs
Publication statusPublished - 2014 Jan 1
Event13th International Conference on Solid State Lighting - San Diego, United States
Duration: 2014 Aug 202014 Aug 21

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9190
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

Other13th International Conference on Solid State Lighting
CountryUnited States
CitySan Diego
Period14/8/2014/8/21

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Keywords

  • Backlight
  • Coupler
  • Illumination
  • LED
  • Light guide plate

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Teng, T. C., & Tseng, L. W. (2014). Design a LED coupler to collocate with a light guide plate for Illumination. In J. Jiao, M. H. Kane, N. Dietz, & J-J. Huang (Eds.), Thirteenth International Conference on Solid State Lighting [91900L] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9190). SPIE. https://doi.org/10.1117/12.2062966