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Energy Express

  • Editor: Bernard Kippelen
  • Vol. 19, Iss. S4 — Jul. 4, 2011
  • pp: A716–A724

Design of primary optics for LED chip array in road lighting application

Shang Wang, Kai Wang, Fei Chen, and Sheng Liu  »View Author Affiliations

Optics Express, Vol. 19, Issue S4, pp. A716-A724 (2011)

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In this study, we proposed an effective optical design method to solve the problem of prescribed illuminance for LED chip array packaging (LCAP). With this method, light energy redistribution can be obtained by optimizing meshing parameters on the target. Not only can it deal with light controlling of extended source, but also improve the uniformity of both illuminance and luminance for road lighting as well. As an example, we designed a 16W LED packaging with a smooth primary freeform lens for general road lighting. The simulation results demonstrated that optical performance of this lens can meet the requirements of Commission Internationale del'Eclairage (CIE) quite well. Longitudinal and overall uniformities are 0.7 and 0.5 respectively, and relative optical efficiency of luminaire can be enhanced 19.6% in theory compared with traditional optics.

© 2011 OSA

OCIS Codes
(080.3620) Geometric optics : Lens system design
(230.3670) Optical devices : Light-emitting diodes
(080.4295) Geometric optics : Nonimaging optical systems

ToC Category:
Light-Emitting Diodes

Original Manuscript: March 21, 2011
Revised Manuscript: April 24, 2011
Manuscript Accepted: May 9, 2011
Published: May 26, 2011

Shang Wang, Kai Wang, Fei Chen, and Sheng Liu, "Design of primary optics for LED chip array
in road lighting application," Opt. Express 19, A716-A724 (2011)

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