A novel automotive headlight system based on digital micro-mirror devices and diffractive optical elements

Ping Su; Yuming Song; Jianshe Ma

doi:10.1117/12.2295888

10 January 2018 A novel automotive headlight system based on digital micro-mirror devices and diffractive optical elements

Ping Su, Yuming Song, Jianshe Ma

Author Affiliations +

Proceedings Volume 10616, 2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 106160J (2018) https://doi.org/10.1117/12.2295888
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

The DMD (Digital Micro-mirror Device) has the advantages of high refresh rate and high diffraction efficiency, and these make it become an ideal loader of multiple modes illumination. DOEs (Diffractive Optical Element) have the advantages of high degree of freedom, light weight, easy to copy, low cost etc., and can be used to reduce the weight, complexity, cost of optical system. A novel automotive headlamp system using DMD as the light distribution element and a DOE as the light field modulation device is proposed in this paper. The pure phase DOE is obtained by the GS algorithm using Rayleigh-Sommerfeld diffraction integral model. Based on the standard automotive headlamp light intensity distribution in the target plane, the amplitude distribution of DMD is obtained by numerical simulation, and the grayscale diagram loaded on the DMD can be obtained accordingly. Finally, according to simulation result, the light intensity distribution in the target plane is proportional to the national standard, hence verifies the validity of the novel system. The novel illumination system proposed in this paper provides a reliable hardware platform for the intelligent headlamps.

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Ping Su, Yuming Song, and Jianshe Ma "A novel automotive headlight system based on digital micro-mirror devices and diffractive optical elements", Proc. SPIE 10616, 2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 106160J (10 January 2018); https://doi.org/10.1117/12.2295888

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KEYWORDS

Diffractive optical elements

Headlamps

Micromirrors

Digital micromirror devices

Diffraction

Numerical simulations

Detection and tracking algorithms

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