Diffractive optics based automotive lighting system : A rear end lamp design for communication between road users

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Khan, M.S.; Saeed, W.M.; Roth, B.; Lachmayer, R.: Diffractive optics based automotive lighting system : A rear end lamp design for communication between road users. In: Advanced Optical Technologies 10 (2020), Nr. 1, S. 49-57. DOI: https://doi.org/10.1515/aot-2020-0055

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Sum total of downloads: 79

Information projection using laser-based illumination systems in the automotive area is of keen interest to enhance communication between road users. Numerous work on laser-based front end projection employing refractive and reflective optics has been reported so far, while for rear end illumination efforts are more scarce and a different optical design concept due to limited volumetric size and field of view regulations is required. Here, we report on a new and versatile approach for a laser-based rear end lighting system for automotive application which enables projection of information or signals to support other road users. The design is based on thin diffractive optical elements projecting the desired patterns upon illumination. Also, for protection of the road users from the steering laser beam, a diffusive back projection screen is designed to project information while fulfilling both the field of view and safety requirements. The projection system is based on a periodic diffusive structure made of an array of biconic lenses with sizes in the millimeter range. The field of view (FOV) from the simulated lens arrays complies with the angular requirements set by the Economic Commission for Europe (ECE). As a proof of concept, the diffusive screen is fabricated using microfabrication technology and characterized. In future, the screen will be combined with thin diffractive optical elements to realize an entire integrated projection system. © 2020 Muhammad Shaukat Khan et al., published by De Gruyter, Berlin/Boston 2020.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2020
Appears in Collections:Naturwissenschaftliche Fakultät

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downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 44 55.70%
2 image of flag of India India 7 8.86%
3 image of flag of Turkey Turkey 5 6.33%
4 image of flag of Czech Republic Czech Republic 3 3.80%
5 image of flag of China China 3 3.80%
6 image of flag of No geo information available No geo information available 2 2.53%
7 image of flag of United States United States 2 2.53%
8 image of flag of Japan Japan 2 2.53%
9 image of flag of Israel Israel 2 2.53%
10 image of flag of Canada Canada 1 1.27%
    other countries 8 10.13%

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