Comparison of molded plastics Fresnel lenses with molded plastics nonimaging "cones" for LED collimation

Nelson E. Claytor; Richard N. Claytor; Oscar M. Lechuga

doi:10.1117/12.932474

19 October 2012 Comparison of molded plastics Fresnel lenses with molded plastics nonimaging "cones" for LED collimation

Nelson E. Claytor, Richard N. Claytor, Oscar M. Lechuga

Author Affiliations +

Proceedings Volume 8489, Polymer Optics and Molded Glass Optics: Design, Fabrication, and Materials II; 848907 (2012) https://doi.org/10.1117/12.932474
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

We have investigated the light collection and collimation properties of both Fresnel lenses and the nonimaging (TIR) “cones” typically used with LEDs. We have measured the integrated light output and its spatial distribution, and we have also measured the sensitivity of these two parameters to misalignment between the optic and the LED. We find that for a given distance from the LED to the front of the optic, a Fresnel lens can produce a narrower (better collimated) beam than can a nonimaging “cone.” Various design and manufacturability factors must be weighed when determining which solution to choose for a given illumination problem, and some of these are discussed.

Citation Download Citation

Nelson E. Claytor, Richard N. Claytor, and Oscar M. Lechuga "Comparison of molded plastics Fresnel lenses with molded plastics nonimaging "cones" for LED collimation", Proc. SPIE 8489, Polymer Optics and Molded Glass Optics: Design, Fabrication, and Materials II, 848907 (19 October 2012); https://doi.org/10.1117/12.932474

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