"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Design of a novel TIR lens for optimizing the optical performance of white LED lamps

ANH Q. D. NGUYEN1, P. X. LE2, H. Y. LEE3,*

Affiliation

  1. Nguyen Tat Thanh University, Ho Chi Minh, Vietnam
  2. Faculty of Electrical and Electronics Engineering, HCMC University of Food Industry, Ho Chi Minh, Vietnam
  3. Department of Electrical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan

Abstract

A novel TIR lens is proposed for optimizing the optical performance of white LED packages. The delineation of a novel TIR lens, including multi-curve collimator and multi-shape surface is determined by the Snell’s law, the energy conservation law and the Monte Carlo ray tracking method. It is demonstrated that an optical efficiency of 95.69% under a beam angle of 30 degrees is accomplished by experiments. Furthermore, the illumination homogeneity increases to 0.195 in comparison with the commercial TIR lens uniformity of 0.032. The production cost of this novel lens should be low because it has no a reflector.

Keywords

LED lighting, Optics design, Illumination homogeneity.

Submitted at: Oct. 12, 2017
Accepted at: Aug. 9, 2018

Citation

ANH Q. D. NGUYEN, P. X. LE, H. Y. LEE, Design of a novel TIR lens for optimizing the optical performance of white LED lamps, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 7-8, pp. 349-355 (2018)