Design of a LED Module with Special Constraint

Abstract:

LED gradually replaces light source in many fields, it becomes more and more important. For the purpose of letting LED more effective, people usually use secondary optical lens to improve the optical quality. In this research, reflector and lens are used to compose a LED light module. In this study, a LED module is designed to meet the specific requirement of the illumination. It was found that changing lens thickness and lens position can improve the uniformity and the size of light patch. As a result, we found parameters about lens for best results. In the design process, we realized that uniformity can be increased by decreasing D10 value of the light. The best result of simulation was found (which are in the form of point data). We used polynomials to fit the contour of LED module of point data and used it to extend the reflector contour of calculated results. The size of light patch of LED contour with reflector-masked and point data is much smaller than with polynomials.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 2704-2710
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.2704
• Online since: January 2013
• Authors: Dein Shaw, Yan Ching Huang
• Keywords: LED, Lens, Reflector, Uniformity

References

[1] Commission, Particular requirements for the safety of surgical luminaires and luminaires for diagnosis, in Medical electrical equipment (2000) vol. IEC 60601-2-41: (2000).

DOI: 10.3403/02028977u

[2] http: /www. expertglossary. com/telecom/definition/lambertian-source.

[3] A. Luque and E. Lorenzo, Conditions for achieving ideal and Lambertian symmetrical solar concentrators, Applied Optics, Vol. 21, Issue 20, pp.3736-3738 (1982).

DOI: 10.1364/ao.21.003736

[4] Y. Zhen, Z. Jia, and W. Zhang, The optimal design of TIR lens for improving LED illumination uniformity and efficiency, in Optical Design and Testing III, (2007), Beijing, China.

DOI: 10.1117/12.756101