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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 24 — Aug. 20, 2013
  • pp: 5888–5893

Optimal design of optical system for LED road lighting with high illuminance and luminance uniformity

Xiaojia Hu and Keyuan Qian  »View Author Affiliations

Applied Optics, Vol. 52, Issue 24, pp. 5888-5893 (2013)

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A new method is proposed to achieve high illuminance and luminance uniformity of the road surface in LED road lighting. Based on the reflection properties of the road surface, the illuminance and luminance are analyzed simultaneously with the least-square method; meanwhile, energy efficiency and glare requirements are considered. Through the analysis and calculations, the optimal light distribution of a luminaire is obtained, and then a freeform lens with this light distribution is designed. For a 2-lane C1 class road illuminated by LED luminaires mounted with these lenses, the overall illuminance and luminance uniformity on the road surface can reach over 0.9 and 0.85, respectively, and the glare factors less than 10%.

© 2013 Optical Society of America

OCIS Codes
(080.2720) Geometric optics : Mathematical methods (general)
(080.3620) Geometric optics : Lens system design
(230.3670) Optical devices : Light-emitting diodes
(220.2945) Optical design and fabrication : Illumination design

ToC Category:
Geometric Optics

Original Manuscript: March 21, 2013
Revised Manuscript: June 14, 2013
Manuscript Accepted: July 3, 2013
Published: August 12, 2013

Xiaojia Hu and Keyuan Qian, "Optimal design of optical system for LED road lighting with high illuminance and luminance uniformity," Appl. Opt. 52, 5888-5893 (2013)

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