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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 30, Iss. 5 — May. 1, 2013
  • pp: 993–1001

Design and analysis of reflector for uniform light-emitting diode illuminance

Chung-Yu Tsai  »View Author Affiliations


JOSA A, Vol. 30, Issue 5, pp. 993-1001 (2013)
http://dx.doi.org/10.1364/JOSAA.30.000993


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Abstract

A light-emitting diode (LED) projection system is proposed, composed of an LED chip and a variable-focus-parabolic (VFP) reflector, in which the focal length varies as a function of the vertical displacement of the incidence point relative to the horizontal centerline of the LED chip. The light-ray paths within the projection system are analyzed using an exact analytical model and a skew-ray tracing approach. The profile of the proposed VFP reflector and the position of the LED chip are then optimized in such a way as to enhance the uniformity of the illuminance distribution on the target region of the image plane. The validity of the optimized design is demonstrated by means of ZEMAX simulations. It is shown that the optimized VFP projector system yields a significant improvement in illuminance uniformity compared to conventional spherical and parabolic projectors and therefore minimizes the glare effect.

© 2013 Optical Society of America

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(230.3670) Optical devices : Light-emitting diodes
(110.2945) Imaging systems : Illumination design
(080.4228) Geometric optics : Nonspherical mirror surfaces

ToC Category:
Optical Devices

History
Original Manuscript: February 13, 2013
Revised Manuscript: March 30, 2013
Manuscript Accepted: March 30, 2013
Published: April 24, 2013

Citation
Chung-Yu Tsai, "Design and analysis of reflector for uniform light-emitting diode illuminance," J. Opt. Soc. Am. A 30, 993-1001 (2013)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-30-5-993


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References

  1. D. A. Steigerwald, J. C. Bhat, D. Collins, R. M. Fletcher, M. O. Holcomb, M. J. Ludowise, P. S. Martin, and S. L. Rudaz, “Illumination with solid state lighting technology,” IEEE J. Sel. Top. Quantum Electron. 8, 310–320 (2002). [CrossRef]
  2. C. C. Sun, Y. C. Lo, C. C. Tsai, X. H. Lee, and W. T. Chien, “Anti-glare LED projection lamp based on an optical design with a confocal double-reflector,” Opt. Commun. 285, 4207–4210 (2012). [CrossRef]
  3. A. Cvetkovic, O. Dross, J. Chaves, P. Benítez, J. C. Miñano, and R. Mohedano, “Etendue-preserving mixing and projection optics for high-luminance LEDs, applied to automotive headlamps,” Opt. Express 14, 13014–13020 (2006). [CrossRef]
  4. C. C. Sun, T. X. Lee, S. H. Ma, Y. L. Lee, and S. M. Huang, “Precise optical modeling for LED lighting verified by cross correlation in the midfield region,” Opt. Lett. 31, 2193–2195 (2006). [CrossRef]
  5. W. T. Chien, C. C. Sun, and I. Moreno, “Precise optical model of multi-chip white LEDs,” Opt. Express 15, 7572–7577 (2007). [CrossRef]
  6. H. H. P. Wu, Y. P. Lee, and S. H. Chang, “Fast measurement of automotive headlamps based on high dynamic range imaging,” Appl. Opt. 51, 6870–6880 (2012). [CrossRef]
  7. H. Ries and A. Rabi, “The edge ray principle of nonimaging optics,” J. Opt. Soc. Am. A 11, 2627–2632 (1994). [CrossRef]
  8. H. Ries, N. Shatz, J. Bortz, and W. Spirkl, “Performance limitations of rotationally symmetric nonimaging devices,” J. Opt. Soc. Am. A 14, 2855–2862 (1997). [CrossRef]
  9. R. Leutz, A. Suzuki, A. Akisawa, and T. Kashiwagi, “Design of a nonimaging fresnel lens for solar concentrators,” Sol. Energy 65, 379–387 (1999). [CrossRef]
  10. A. Timinger, A. Kribus, H. Ries, T. Smith, and M. Walther, “Optical assessment of nonimaging concentrators,” Appl. Opt. 39, 5679–5684 (2000). [CrossRef]
  11. J. M. Gordon, P. Kashin, and A. Rabl, “Nonimaging reflectors for efficient uniform illumination,” Appl. Opt. 31, 6027–6035 (1992). [CrossRef]
  12. F. Chen, K. Wang, Z. Qin, D. Wu, X. Luo, and S. Liu, “Design method of high-efficient LED headlamp lens,” Opt. Express 18, 20926–20938 (2010). [CrossRef]
  13. Y. Ding, X. Liu, Z. R. Zheng, and P. F. Gu, “Freeform LED lens for uniform illumination,” Opt. Express 16, 12958–12966 (2008). [CrossRef]
  14. Y. Luo, Z. Feng, Y. Han, and H. Li, “Design of compact and smooth free-form optical system with uniform illuminance for LED source,” Opt. Express 18, 9055–9063 (2010). [CrossRef]
  15. F. Fournier and J. Rolland, “Optimization of freeform lightpipes for light-emitting-diode projectors,” Appl. Opt. 47, 957–966 (2008). [CrossRef]
  16. W. B. Elmer, “The optics of reflectors for illumination,” IEEE Trans. Ind. Appl. IA-19, 776–788 (1983). [CrossRef]
  17. S. A. Lerner and J. M. Sasian, “Optical design with parametrically defined aspheric surfaces,” Appl. Opt. 39, 5205–5213 (2000). [CrossRef]
  18. T. J. Smith, “Integrated LED warning and vehicle lamp” U.S. patent 7,158,019 (January2, 2007).
  19. G. H. Koester, “LED reflector lamp,” U.S. patent 7,824,076(November2, 2010).
  20. O. F. Foo, “Reflector cup and led lamp comprising the same,” U.S. patent 0,134,644 (June9, 2011).
  21. P. D. Lin and C. H. Lu, “Analysis and design of optical systems by use of sensitivity analysis of skew ray tracing,” Appl. Opt. 43, 796–807 (2004). [CrossRef]
  22. S. S. Rao, Engineering Optimization: Theory and Practice, 3rd ed. (Wiley Eastern, 1996).
  23. R. P. Paul, Robot Manipulators: Mathematics, Programming and Control (MIT, 1982).
  24. J. Johannes, “On the cause of disability glare and its dependence on glare angle, age and ocular pigmentation,” Clin. Exp. Optom. 86, 363–370 (2003). [CrossRef]
  25. C. C. Sun, Y. C. Lo, C. C. Tsai, X. H. Lee, and W. T. Chien, “Anti-glare LED projection lamp based on an optical design with a confocal double-reflector,” Opt. Commun. 285, 4207–4210 (2012). [CrossRef]

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