This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Pixelated-LEDs Car Headlight Design for Smart Driving and CO 2 Reduced Emissions
Technical Paper
2020-37-0018
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The advent of Electroluminescent Diode (LED) technologies has been one of the major sources of energy reduction in the domestic lighting sector as well as in the automotive and aerospace fields. In vehicles, the use of LEDs allows a reduction of 110W to 40W useful for the function Dipped beam is a gain of about 350W in energy consumption of the vehicle with a combustion engine (from 2 to 5g of CO2 per kilometer) [1]. In 2010, Adaptive Driving Beam (ADB (also called glare-free high beam) appeared. The objective of the ADB is to adapt the beam to the presence of vehicles in both directions to improve the driver's long-range visibility without causing discomfort, distraction or glare to other road users. The ADB is a lighting function with high added value in terms of comfort and road safety [2]. The new lighting technologies make this function more and more efficient and effective with a resolution and the number of pixels that increases. Pixelated LEDs, by offering various advantages over other architectures, are gaining market shares. They are more efficient and then they will contribute to reduce CO2 emissions because in the case of pixelated LED we only turn on the necessary pixels as opposed to DMD and LCD beam solutions. Besides these advantages, LEDs also have longer lifetime. Today, the pixels number per headlight does not exceed 100 pixels and soon, in 2022 this number will go over thousands of pixels per headlight for dynamic and high definition beams for new application such as glare free and high beam road marking functions. Several architectures allow pixelation -- LCD beam, DMD, Laser Scan, Pixelated LED -- are presented and studied in this work. The main selection criteria for choosing the optimal architecture presented here are road safety, reduction of CO2 emissions, reliability and robustness.
Recommended Content
Authors
Topic
Citation
Beddar, S., Millet, J., and Alayli, Y., "Pixelated-LEDs Car Headlight Design for Smart Driving and CO2 Reduced Emissions," SAE Technical Paper 2020-37-0018, 2020, https://doi.org/10.4271/2020-37-0018.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 | ||
Unnamed Dataset 7 | ||
Unnamed Dataset 8 | ||
Unnamed Dataset 9 |
Also In
References
- Neumann , R. Future Light Performance Requirements - Visibility, Comfort, Information SIA VISION 2018, Vehicle and Infrastructure Safety Improvement in Adverse Conditions and Night Driving Paris October 9-10, 2018
- January 27, 2016
- Ishii , J. , Osuga , M. , Okada , T. , Miyazaki , H. et al. Reduction of CO2 Emissions for Automotive Systems Hitachi Review 57 5 185 2008
- 1998
- 28 June 2019
- Didier , J. , Harbourg , B. , and Hoonhorst , F. L’éclairage opératoire IRBM News 30 30 50 2009
- Pousset , N. 2009
- Krames , M.R. , Shchekin , O.B. , Mueller-Mach , R. , Mueller , G.O. et al. Status and Future of High-Power Light-Emitting Diodes for Solid-State Lighting Journal of Display Technology 3 2 160 175 2007
- Chambion , B. 2014
- Tian , P. , Althumali , A. , Gu , E. , Watson , I.M. et al. Aging Characteristics of Blue InGaN Micro-Light Emitting Diodes at an Extremely High Current Density of 3.5 kA cm-2 Semiconductor Science and Technology 31 4 045005 2016
- Dudley , D. , Duncan , W.M. , Slaughter , J. Emerging Digital Micromirror Device (DMD) Applications Proc. SPIE 4985, MOEMS Display and Imaging Systems January 20, 2003 https://doi.org/10.1117/12.480761
- Stroop , P. , Hilling , B. , Steudel , F. , Nolte , P.W. Laser Scanning Lighting Systems - Optimization of Contrast and Further Challenges SIA VISION 2018, Vehicle and Infrastructure Safety Improvement in Adverse Conditions and Night Driving Paris October 9-10, 2018
- Duhme , D. , and Fischer , B. Next Generation LCD Module Proc. 12th International Symposium on Automotive Lighting 2017
- Groetsch , S. , Reill , J. , Schwind , M. , Haneder , S. , et al Illumination vs. Visualization in Headlamps: Way Towards hd Light Source Requirements SIA VISION 2018, Vehicle and Infrastructure Safety Improvement in Adverse Conditions and Night Driving Paris October 9-10, 2018
- Cladé , S. , Courcier , M. , Roels , S. Pellarin , M. 4K Pixel Solid State Glare Free High Beam 13th International Symposium on Automotive Lighting Darmstadt September 23-25, 2019
- Werner , K. A Paradigm Shift in Autonomous Cars (and More) at Vehicle Displays Information Display 35 24 29 2019 10.1002/msid.1074
- Hamm , M. Green Lighting: Analysing the Potential for Reduction of CO2-Emissions in Full LED Headlamps SAE Technical Paper 2009-01-0058 2009 https://doi.org/10.4271/2009-01-0058
- June 2017
- Alvarez , R. , Schlienger , P. , and Weilenmann , M. Effect of hybrid System Battery Performance on Determining CO 2 Emissions of Hybrid Electric Vehicles in Real-World Conditions Energy Policy 38 11 6919 6925 2010
- Roslak , J. , and Wallaschek , J. Active Lighting Systems for Improved Road Safety In IEEE Intelligent Vehicles Symposium 2004 682 685
- Rizvi , S. , Ley , P.P. , Knöchelmann , M. , and Lachmayer , R. 2018
- Magar , S.G. Adaptive Front Light Systems of Vehicle for Road Safety 2015 International Conference on Computing Communication Control and Automation 551 554 2015