Open Access
24 August 2021 Review of optical design for vehicle forward lighting based on white LEDs
Author Affiliations +
Abstract

We introduce a current development in optical design for vehicle forward lighting based on solid-state lighting, in particular, phosphor-converted white LEDs. The vehicles include bicycles, bikes, and automobiles. Although the requirements regulating different vehicles are different, the low beam always requires a high-contrast cutoff line. Three optical design approaches are discussed; these include a projection lens incorporated with a baffle or beam shaper, multisegment reflectors, and complex lenses. A new design approach called light field management technology for the multisegment reflector is introduced. In addition, the possible related manufacturing errors and the robustness of different optical approaches are analyzed. Finally, we introduce three approaches to adaptive forward lighting that provide a driver with brighter and clearer vision without inducing glare to people on the roadway. The application of video projection technology to roadway illumination could be a trend of vehicle forward lighting based on solid-state lighting.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
Ching-Cherng Sun, Chi-Shou Wu, Yong-Sheng Lin, Yi-Jou Lin, Cheng-Yan Hsieh, Shih-Kang Lin, Tsung-Hsun Yang, and Yeh-Wei Yu "Review of optical design for vehicle forward lighting based on white LEDs," Optical Engineering 60(9), 091501 (24 August 2021). https://doi.org/10.1117/1.OE.60.9.091501
Received: 15 July 2021; Accepted: 11 August 2021; Published: 24 August 2021
Lens.org Logo
CITATIONS
Cited by 11 scholarly publications.
Advertisement
Advertisement
KEYWORDS
Reflectors

Headlamps

Light sources and illumination

Light emitting diodes

Optical design

Light sources

Beam shaping

RELATED CONTENT


Back to Top