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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 20 — Oct. 15, 2006
  • pp: 3016–3018

Microlens array diffuser for a light-emitting diode backlight system

Sung-Il Chang, Jun-Bo Yoon, Hongki Kim, Jin-Jong Kim, Baik-Kyu Lee, and Dong Ho Shin  »View Author Affiliations

Optics Letters, Vol. 31, Issue 20, pp. 3016-3018 (2006)

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Microlens array (MLA) diffusers for light-emitting diode (LED) backlight systems have been developed. A high fill-factor photoresist mold for the MLA was fabricated using three-dimensional diffuser lithography, and the patterns were transferred to a nickel master mold for UV-curable polymer replication. The fabricated microlens had various paraboloidal profiles, and its aspect ratio was controlled from 1.0 to 2.1. The MLA diffuser showed a batwing radiation pattern with a radiation angle of 150°. The fabricated MLA diffuser may greatly enhance the color-mixing characteristics of LED backlight systems and help reduce the number of LEDs required.

© 2006 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.4000) Optical devices : Microstructure fabrication
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Optical Devices

Original Manuscript: May 17, 2006
Revised Manuscript: July 16, 2006
Manuscript Accepted: July 20, 2006
Published: September 25, 2006

Sung-Il Chang, Jun-Bo Yoon, Hongki Kim, Jin-Jong Kim, Baik-Kyu Lee, and Dong Ho Shin, "Microlens array diffuser for a light-emitting diode backlight system," Opt. Lett. 31, 3016-3018 (2006)

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  1. R. Tasso, M. Sales, S. Chakmakjian, D. J. Schertler, and G. M. Morris, in Proc. SPIE 5530, 133 (2004). [CrossRef]
  2. H. Urey and K. D. Powell, Appl. Opt. 44, 4930 (2005). [CrossRef] [PubMed]
  3. Z. D. Popovic, R. A. Sprague, and G. A. Neville Connel, Appl. Opt. 27, 1281 (1988). [CrossRef] [PubMed]
  4. H. Yang, C.-K. Chao, M.-K. Wei, and C.-P. Lin, J. Micromech. Microeng. 14, 1197 (2004). [CrossRef]
  5. D. L. MacFarlane, V. Narayan, J. A. Tatum, W. R. Cox, T. Chen, and D. J. Hayes, IEEE Photon. Technol. Lett. 6, 1112 (1994). [CrossRef]
  6. S.-D. Moon, S. Kang, and J.-U. Bu, Opt. Eng. 41, 2267 (2002). [CrossRef]
  7. K. M. Baker, Appl. Opt. 38, 352 (1999). [CrossRef]
  8. S.-I. Chang and J.-B. Yoon, Opt. Express 12, 6366 (2004). [CrossRef] [PubMed]
  9. Ph. Nussbaum, R. Völkel, H. P. Herzig, M. Eisner, and S. Haselbeck, Pure Appl. Opt. 6, 617 (1997). [CrossRef]

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