Adjustable mini-LED array applied to low/high beam meet the Kmark 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

Adjustable mini-LED array applied to low/high beam meet the Kmark 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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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.

Original language	English
Title of host publication	Current Developments in Lens Design and Optical Engineering XXIII
Editors	R. Barry Johnson, Virendra N. Mahajan, Simon Thibault, Alfonso Padilla-Vivanco
Publisher	SPIE
ISBN (Electronic)	9781510654181
DOIs	https://doi.org/10.1117/12.2633034
State	Published - 2022
Event	Current Developments in Lens Design and Optical Engineering XXIII 2022 - San Diego, United States Duration: 23 Aug 2022 → 24 Aug 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12217
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Current Developments in Lens Design and Optical Engineering XXIII 2022
Country/Territory	United States
City	San Diego
Period	23/08/22 → 24/08/22

Keywords

bike lamp
high beam
low beam
mini-LED

Access to Document

10.1117/12.2633034

Cite this

Lin, Y. J., Lee, X. H., Nguyen, Q. K., Lin, S. K., Wu, C. S., Yang, T. H., Lee, T. X., Yu, Y. W., & Sun, C. C. (2022). Adjustable mini-LED array applied to low/high beam meet the Kmark regulation. In R. B. Johnson, V. N. Mahajan, S. Thibault, & A. Padilla-Vivanco (Eds.), Current Developments in Lens Design and Optical Engineering XXIII Article 122170J (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12217). SPIE. https://doi.org/10.1117/12.2633034

Lin, Yi Jou ; Lee, Xuan Hao ; Nguyen, Quang Khoi et al. / Adjustable mini-LED array applied to low/high beam meet the Kmark regulation. Current Developments in Lens Design and Optical Engineering XXIII. editor / R. Barry Johnson ; Virendra N. Mahajan ; Simon Thibault ; Alfonso Padilla-Vivanco. SPIE, 2022. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Adjustable mini-LED array applied to low/high beam meet the Kmark regulation",

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.",

keywords = "bike lamp, high beam, low beam, mini-LED",

author = "Lin, {Yi Jou} and Lee, {Xuan Hao} and Nguyen, {Quang Khoi} and Lin, {Shih Kang} and Wu, {Chi Shou} and Yang, {Tsung Hsun} and Lee, {Tsung Xian} and Yu, {Yeh Wei} and Sun, {Ching Cherng}",

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series = "Proceedings of SPIE - The International Society for Optical Engineering",

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Lin, YJ, Lee, XH, Nguyen, QK, Lin, SK, Wu, CS, Yang, TH, Lee, TX, Yu, YW & Sun, CC 2022, Adjustable mini-LED array applied to low/high beam meet the Kmark regulation. in RB Johnson, VN Mahajan, S Thibault & A Padilla-Vivanco (eds), Current Developments in Lens Design and Optical Engineering XXIII., 122170J, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12217, SPIE, Current Developments in Lens Design and Optical Engineering XXIII 2022, San Diego, United States, 23/08/22. https://doi.org/10.1117/12.2633034

Adjustable mini-LED array applied to low/high beam meet the Kmark regulation. / Lin, Yi Jou; Lee, Xuan Hao; Nguyen, Quang Khoi et al.
Current Developments in Lens Design and Optical Engineering XXIII. ed. / R. Barry Johnson; Virendra N. Mahajan; Simon Thibault; Alfonso Padilla-Vivanco. SPIE, 2022. 122170J (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12217).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Yang, Tsung Hsun

AU - Lee, Tsung Xian

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AU - Sun, Ching Cherng

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AB - 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.

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Lin YJ, Lee XH, Nguyen QK, Lin SK, Wu CS, Yang TH et al. Adjustable mini-LED array applied to low/high beam meet the Kmark regulation. In Johnson RB, Mahajan VN, Thibault S, Padilla-Vivanco A, editors, Current Developments in Lens Design and Optical Engineering XXIII. SPIE. 2022. 122170J. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2633034

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

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