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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S3 — May. 5, 2014
  • pp: A742–A758

Planar waveguide LED illuminator with controlled directionality and divergence

William M. Mellette, Glenn M. Schuster, and Joseph E. Ford  »View Author Affiliations


Optics Express, Vol. 22, Issue S3, pp. A742-A758 (2014)
http://dx.doi.org/10.1364/OE.22.00A742


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Abstract

We present a versatile illumination system where white light emitting diodes are coupled through a planar waveguide to periodically patterned extraction features at the focal plane of a two dimensional lenslet array. Adjusting the position of the lenslet array allows control over both the directionality and divergence of the emitted beam. We describe an analytic design process, and show optimal designs can achieve high luminous emittance (1.3x104 lux) over a 2x2 foot aperture with over 75% optical efficiency while simultaneously allowing beam steering over ± 60° and divergence control from ± 5° to fully hemispherical output. Finally, we present experimental results of a prototype system which validate the design model.

© 2014 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(230.7400) Optical devices : Waveguides, slab
(080.2175) Geometric optics : Etendue
(110.2945) Imaging systems : Illumination design
(080.4295) Geometric optics : Nonimaging optical systems

ToC Category:
Illumination Design

History
Original Manuscript: December 19, 2013
Revised Manuscript: February 27, 2014
Manuscript Accepted: March 15, 2014
Published: April 1, 2014

Citation
William M. Mellette, Glenn M. Schuster, and Joseph E. Ford, "Planar waveguide LED illuminator with controlled directionality and divergence," Opt. Express 22, A742-A758 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-S3-A742


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References

  1. J.-G. Chang and Y.-B. Fang, “Dot-pattern design of a light guide in an edge-lit backlight using a regional partition approach,” Opt. Eng.46(4), 10984–10995 (2012).
  2. D. Feng, Y. Yan, X. Yang, G. Jin, and S. Fan, “Novel integrated light-guide plates for liquid crystal display backlight,” J. Opt. A Pure Appl. Opt.7(3), 111–117 (2005). [CrossRef]
  3. T. C. Teng and J. C. Ke, “A novel optical film to provide a highly collimated planar light source,” Opt. Express21(18), 21444–21455 (2013). [CrossRef] [PubMed]
  4. J. H. Karp, E. J. Tremblay, and J. E. Ford, “Planar micro-optic solar concentrator,” Opt. Express18(2), 1122–1133 (2010). [CrossRef] [PubMed]
  5. J. M. Hallas, K. A. Baker, J. H. Karp, E. J. Tremblay, and J. E. Ford, “Two-axis solar tracking accomplished through small lateral translations,” Appl. Opt.51(25), 6117–6124 (2012). [CrossRef] [PubMed]
  6. A. W. Lohmann, “Scaling laws for lens systems,” Appl. Opt.28(23), 4996–4998 (1989). [CrossRef] [PubMed]
  7. D. T. Moore, G. R. Schmidt, and B. L. Unger, “Concentrated photovoltaic stepped planar light guide,” in International Optical Design Conference, Technical Digest (Optical Society of America, 2010), paper JMB46P. [CrossRef]
  8. J. K. Kim, T. Gessmann, H. Luo, and E. F. Schubert, “GaInN light emitting diodes with RuO2/SiO2/Ag omni-directional reflector,” Appl. Phys. Lett.84(22), 4508–4510 (2004). [CrossRef]
  9. H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett.86(24), 243505 (2005). [CrossRef]
  10. H. J. Cornelissen, H. Ma, C. Ho, M. Li, and C. Mu, “Compact collimators for high brightness blue LEDs using dielectric multilayers,” Proc. SPIE8123, 81230J (2011). [CrossRef]
  11. T.-C. Teng, W.-S. Sun, L.-W. Tseng, and W.-C. Chang, “A slim apparatus of transferring discrete LEDs’ light into an ultra-collimated planar light source,” Opt. Express21(22), 26972–26982 (2013). [CrossRef] [PubMed]
  12. R. Winston, J. C. Minano, and P. Benitez, Nonimaging Optics (Academic, 2005).
  13. F. Fournier, W. J. Cassarly, and J. P. Rolland, “Method to improve spatial uniformity with lightpipes,” Opt. Lett.33(11), 1165–1167 (2008). [CrossRef] [PubMed]
  14. M. Heiblum and J. H. Harris, “Analysis of curved optical waveguides by conformal transformation,” IEEE J. Quantum Electron.11(2), 75–83 (1975). [CrossRef]
  15. S. Garner, H. Fong, M. He, P. Cimo, X. Li, Y. Cai, S. Ouyang, Y. Xie, Q. Shi, and S. Cai, “Flexible glass substrates for display and lighting applications,” in IEEE Photonics Conference (IPC) (2013), pp. 176–177. [CrossRef]
  16. K. A. Denault, M. Cantore, S. Nakamura, S. P. DenBaars, and R. Seshadri, “Efficient and stable laser-driven white lighting,” AIP Adv.3(7), 072107 (2013). [CrossRef]
  17. A. O. Marcano, C. Loper, and N. Melikechi, “High-sensitivity absorption measurement in water and glass samples using a mode-mismatched pump-probe thermal lens method,” Appl. Phys. Lett.78(22), 3415–3417 (2001). [CrossRef]
  18. P. S. Chechurov and G. E. Romanova, “Using the ZEMAX software complex to form photometric models of LED illuminator devices,” J. Opt. Technol.79(5), 302–304 (2012). [CrossRef]

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