Adaptive automotive headlamp incorporated with using volume holographic optical element

Yong-Sheng Lin; Tsung-Xian Lee; Tsung-Hsun Yang; Yeh-Wei Yu; Ching-Cherng Sun

doi:10.1117/12.2676781

2 October 2023 Adaptive automotive headlamp incorporated with using volume holographic optical element

Yong-Sheng Lin, Tsung-Xian Lee, Tsung-Hsun Yang, Yeh-Wei Yu, Ching-Cherng Sun

Proceedings Volume 12666, Current Developments in Lens Design and Optical Engineering XXIV; 126660C (2023) https://doi.org/10.1117/12.2676781
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

In this paper, we propose an innovative adaptive automotive headlamp design that incorporates a volume holographic optical element (VHOE) as a beam splitter. The VHOE is recorded with an infrared divergent spherical wave, allowing for the efficient combination of both time-of-flight (ToF) laser beam and miniLED imaging automotive headlamp. By exploiting the Bragg selectivity property of the VHOE, only the ToF light is affected while the imaging headlamp light passes through unaffected. This facilitates the adaptation of the automotive headlamp to different lighting conditions, providing enhanced visibility and safety for drivers. The ToF laser beam provides accurate depth information, while the miniLED can create a high-contrast cut-off line. The VHOE beam splitter enables the effective combination of these two lighting sources, ensuring that each is used to its full potential. Our design offers a promising solution for adaptive automotive headlamp systems that could potentially improve driver safety on the road.

Conference Presentation

Citation Download Citation

Yong-Sheng Lin, Tsung-Xian Lee, Tsung-Hsun Yang, Yeh-Wei Yu, and Ching-Cherng Sun "Adaptive automotive headlamp incorporated with using volume holographic optical element", Proc. SPIE 12666, Current Developments in Lens Design and Optical Engineering XXIV, 126660C (2 October 2023); https://doi.org/10.1117/12.2676781

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