High-resolution headlamps: Innovative functionalities and the potential of using laser diodes as light sources

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Li, Y.; Knöchelmann, M.; Lachmayer, R.: High-resolution headlamps: Innovative functionalities and the potential of using laser diodes as light sources. 7th International Forum on Automotive Lighting (IFAL), 25-26 June 2019, Shanghai. http://www.ifal-forum.com

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/5333

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Sum total of downloads: 549




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Abstract: 
High-resolution headlamp systems are increasingly attracting attentions from OEMs and researchers, while plenty of innovative lighting functionalities such as precisely glare avoidance of high beam, fully adaptive driving beam and on-road projection bring a huge potential for improving the driving safety and comfort. Besides, as a respond to the trend of intelligent transportation and autonomous driving in the future, lighting based communication between drivers and other road participants is also a possible supplementary functionality of such headlamp systems. The growth of such headlamps raises specific illumination demands regarding to the functionalities consequently.To achieve these high resolution dynamic light functions and to fulfill the relevant requirements, several additive or subtractive projection technologies are considered by OEMs and researchers. Due to the different applied circumstances and intentions, the uses of these technologies in headlamp systems are different from those in video projectors. Headlamp systems demand a high optical efficiency with highly compact constructions, which raises requirements to the design and arrangement on both mechatronic and optical systems. As a result, particular schemes for different projection technologies have been developing and brought up in recent years. Moreover, the pursuit of efficiency and compaction suggests the appliance of laser diodes as light sources. Laser diodes have intense optical output power with relatively small emission areas and narrow divergent angles, leading to the use of small optical components for realizing compact modules. Besides, other peculiar properties of laser diodes such as linear polarizations and likely fiber-coupled can be utilized for specific designs as well. In this article, the development of headlamp systems in Germany with correspondent innovative functionalities and requirements are discussed, prototypes composed of different technologies are illustrated, and furthermore, the advantages of using laser diodes for these technologies are also presented.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: ConferenceObject
Publishing status: publishedVersion
Issue Date: 2019-06-25
Appears in Collections:Fakultät für Maschinenbau

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 203 36.98%
2 image of flag of China China 65 11.84%
3 image of flag of Korea, Republic of Korea, Republic of 43 7.83%
4 image of flag of United States United States 40 7.29%
5 image of flag of Taiwan Taiwan 31 5.65%
6 image of flag of India India 25 4.55%
7 image of flag of Japan Japan 16 2.91%
8 image of flag of Lithuania Lithuania 12 2.19%
9 image of flag of France France 12 2.19%
10 image of flag of Hong Kong Hong Kong 10 1.82%
    other countries 92 16.76%

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