TY - JOUR AU - Sun, Chun-Hao AU - Teng, Tun-Chien PY - 2016/08/01 Y2 - 2024/03/29 TI - Design of Slim LED Coupler for Collimated Light Source JF - Proceedings of Engineering and Technology Innovation JA - Proc. eng. technol. innov. VL - 3 IS - 0 SE - Articles DO - UR - https://ojs.imeti.org/index.php/PETI/article/view/231 SP - 7-9 AB - <p class="Context"><span lang="EN-GB">This study proposed a slim coupler to collimate the light emitted from an LED, which can be used as a collimated light source. The coupler is substantially a 2-D compound parabolic collector (CPC); its bottom surface has longitudinally extending V-groove microstructures thereon. The parabolic side walls reflect the propagating light to converge only in the transverse direction, but the V-groove microstructures reflect the light and make its propagating direction gradually rotates around a central axis of the CPC. Therefore, the angular distribution of the light finally converges after several times of reflection on both side walls and V-groove microstructures. Moreover, the illuminance distribution on the outlet of the V-groove CPC becomes more uniform than a CPC without V-groove microstructures. The effects of V-groove microstructures on both angular and illuminance distributions of the light emerging from the outlet of the CPC is analyzed, and the feasibility of providing a uniform collimated light source is verified by conducting simulation.</span></p> ER -