Adjustable mini-LED array applied to low/high beam meet the K-mark regulation

Yi-Jou Lin; Xuan-Hao Lee; Quang-Khoi Nguyen; Shih-Kang Lin; Chi Shou Wu; Tsung-Hsun Yang; Tsung-Xian Lee; Yeh-Wei Yu; Ching-Cherng Sun

doi:10.1117/12.2633034

3 October 2022 Adjustable mini-LED array applied to low/high beam meet the K-mark regulation

Yi-Jou Lin, Xuan-Hao Lee, Quang-Khoi Nguyen, Shih-Kang Lin, Chi Shou Wu, Tsung-Hsun Yang, Tsung-Xian Lee, Yeh-Wei Yu, Ching-Cherng Sun

Author Affiliations +

Proceedings Volume 12217, Current Developments in Lens Design and Optical Engineering XXIII; 122170J (2022) https://doi.org/10.1117/12.2633034
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

In this study, we use 30 mini-LED arrays as the light source of the bike lamp. A single reflector with 68 segments to project vehicle low beam and high beam with the use of a GaN-based mini-LED matrix, which is a 30 LED dies array. The design of the reflector is based on light field technology in considering etendue from the light source across the segments. The group of the segments with smaller etendue from the LED dies in the bottom 2 rows are used to project low beams. When the other LED dies are turned on, the reflector will project light upward and form the high beam. The selection of the turn-on LED dies in the mini-LED matrix can adjust the width of the illumination pattern so that an adaptive low/high beam can be performed.

Conference Presentation

Citation Download Citation

Yi-Jou Lin, Xuan-Hao Lee, Quang-Khoi Nguyen, Shih-Kang Lin, Chi Shou Wu, Tsung-Hsun Yang, Tsung-Xian Lee, Yeh-Wei Yu, and Ching-Cherng Sun "Adjustable mini-LED array applied to low/high beam meet the K-mark regulation", Proc. SPIE 12217, Current Developments in Lens Design and Optical Engineering XXIII, 122170J (3 October 2022); https://doi.org/10.1117/12.2633034

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