Optical design method of freeform lens for a high-power extended LED source

Hong Wang; Naifeng Du; Yuefeng Wu; Huamao Huang

doi:10.1117/12.979201

15 October 2012 Optical design method of freeform lens for a high-power extended LED source

Hong Wang, Naifeng Du, Yuefeng Wu, Huamao Huang

Proceedings Volume 8420, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing; 84200D (2012) https://doi.org/10.1117/12.979201
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

In view of limitation for LED optical design method as ideal point source, a new uniform illumination optical design method of freeform lens for a high-power LED is present in the paper.By establishing an energy corresponding relationship between the extended LED source and the point illumination of the receiving surface, a freeform lens optical model achieving uniform illumination in target plane is obtained.The optical simulation results of uniform light intensity curve of the model are compared with the one designed by an approximate point source method. The results show that the new method can effectively overcome the shortages from the point source design.It is more accurately to control the correspondence relationship of light energy and the outgoing direction of light.The illumination uniformity of the freeform lens is greater than 75% and also meets the design requirements.

Citation Download Citation

Hong Wang, Naifeng Du, Yuefeng Wu, and Huamao Huang "Optical design method of freeform lens for a high-power extended LED source", Proc. SPIE 8420, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200D (15 October 2012); https://doi.org/10.1117/12.979201

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