Using Taguchi method to design LED lamp for zonal lumen density requirement of ENERGY STAR

Jen-Lung Yu; Yi-Yung Chen; Allen Jong-Woei Whang; Chi-Tang Ma

doi:10.1117/12.892373

23 September 2011 Using Taguchi method to design LED lamp for zonal lumen density requirement of ENERGY STAR

Jen-Lung Yu, Yi-Yung Chen, Allen Jong-Woei Whang, Chi-Tang Ma

Proceedings Volume 8123, Eleventh International Conference on Solid State Lighting; 81230M (2011) https://doi.org/10.1117/12.892373
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

In recent trend, LED begins to replace traditional light sources since it has many advantages, such as long lifespan, low power consumption, environmentally mercury-free, broad color gamut, and so on. According to the zonal lumen density requirement of ENERGY STAR, we design a triangular-prism structure for LED light tube. The optical structure of the current LED light tubes consists of the array of LED and the semi-cylindrical diffuser in which the intensity distribution of LED is based on Lambertian and the characteristics of diffuser are BTDF: 63%, transmission: 27%, and absorption: 10%. We design the triangular-prism structure at the both sides of the semi-circular diffuser to control the wide-angle light and use the Taguchi method to optimize the parameters of the structure that will control the 10.41% of total flux to light the area between 90 degree and 135 degree and to avoid the total internal reflection. According to the optical simulation results, the 89.59% of total flux is within 90 degree and the 10.41% of total flux is between 90 degree and 135 degree that match with the Solid-State Lighting (SSL) Criteria V. 1.1 of ENERGY STAR.

Citation Download Citation

Jen-Lung Yu, Yi-Yung Chen, Allen Jong-Woei Whang, and Chi-Tang Ma "Using Taguchi method to design LED lamp for zonal lumen density requirement of ENERGY STAR", Proc. SPIE 8123, Eleventh International Conference on Solid State Lighting, 81230M (23 September 2011); https://doi.org/10.1117/12.892373

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