Lighting Optical Design with TIR Lens for LED Vehicles Daytime Running Lights

• Main Authors: HSIEH,YU-CHAN, 謝育展
• Other Authors: 劉源昌
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/60484587686684365973

碩士 === 中州科技大學 === 機械與自動化工程系 === 102 === The lighting design for LED vehicles daytime running lights to meet the ECE R87 regulation is developed in this research. Many optical design methods using the symmetric/asymmetric TIR lens, the symmetric/asymmetric lens, the symmetric/asymmetric reflector, are studied. The ASAP optical design software is adopted to simulate the light distribution meanwhile the high power Lambertian LED, LW3C, is applied as the light source of the vehicles daytime running lights for lighting design. From the series studies, minimum flux values is 1290 lm for the direct lighting method, 131 lm for the symmetrical reflector method, 77 lm for the asymmetrical reflector method, 124 lm for the symmetrical lens method, 85 lm for the asymmetrical lens method, 116 lm for the symmetrical TIR lens method, and 48 lm for the asymmetrical TIR lens method to pass the ECE R87 requirements. The results show that these design methods, except to the direct lighting method, are suitable for Lambertian LED to be applied to the vehicles daytime running lights. The asymmetric TIR lens method can create very flexible light pattern and has the least minimum flux value; therefore, it will be generally applied to the lighting design with high performance in light quality.