| Title |
Study on the Asymmetric Wide Angle Lens for Linear Type LED Lamp with Uniform Luminance |
| Authors |
Ye-Lim Won ; Gwang-Il Park ; Jong-Tae Kim ; Young Moon Yu |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2017.31.1.069 |
| Keywords |
Linear Type LED Lamp ; Asymmetric Wide Angle Lens ; Lens Design ; Uniform Luminance ; Proper Light Distribution |
| Abstract |
In this paper, we studied the asymmetric wide angle lens suitable for linear type LED lamp which has uniform luminance and appropriate light distribution. Light distribution of the lens for X-axis is designed such that the maximum light intensity peak angle is ±70°, light intensity at the center of the lens is 15% of the maximum light intensity. Light distribution of the lens for Y-axis is about 160°. According to the lens design, the asymmetric wide angle lens was manufactured by injection molding method. As a result, it was confirmed that the lens can satisfy the design targets for the luminance and the light distribution. The efficiency of optical output for manufactured lens was 93.5%. |