Details
| Original language | English |
|---|---|
| Pages (from-to) | 49-57 |
| Number of pages | 9 |
| Journal | Advanced Optical Technologies |
| Volume | 10 |
| Issue number | 1 |
| Early online date | 3 Dec 2020 |
| Publication status | Published - 23 Feb 2021 |
Abstract
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.
Keywords
- automotive lighting, diffractive optics, hot embossing, maskless lithography, microfabrication
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Instrumentation
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In: Advanced Optical Technologies, Vol. 10, No. 1, 23.02.2021, p. 49-57.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Diffractive optics based automotive lighting system
T2 - A rear end lamp design for communication between road users
AU - Khan, Muhammad Shaukat
AU - Saeed, Woheeb Muhammad
AU - Roth, Bernhard
AU - Lachmayer, Roland
N1 - Funding Information: We acknowledge the financial support provided by the Lower Saxony Ministry of Science and Culture (MWK) under PhD Program Tailored Light and the German Research Foundation DFG under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453).
PY - 2021/2/23
Y1 - 2021/2/23
N2 - 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.
AB - 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.
KW - automotive lighting
KW - diffractive optics
KW - hot embossing
KW - maskless lithography
KW - microfabrication
UR - http://www.scopus.com/inward/record.url?scp=85097496056&partnerID=8YFLogxK
U2 - 10.1515/aot-2020-0055
DO - 10.1515/aot-2020-0055
M3 - Article
AN - SCOPUS:85097496056
VL - 10
SP - 49
EP - 57
JO - Advanced Optical Technologies
JF - Advanced Optical Technologies
SN - 2192-8576
IS - 1
ER -