Efficient conceptual design for LED-based pixel light vehicle headlamps

Download statistics - Document (COUNTER):

Held, M.P.; Lachmayer, R.: Efficient conceptual design for LED-based pixel light vehicle headlamps. In: Proceedings of SPIE 10603 (2017), 1060315. DOI: https://doi.org/10.1117/12.2292741

Repository version

To cite the version in the repository, please use this identifier: https://doi.org/10.15488/3328

Selected time period:

year: 
month: 

Sum total of downloads: 2,074




Thumbnail
Abstract: 
High-resolution vehicle headlamps represent a future-oriented technology that can be used to increase traffic safety and driving comfort. As a further development to the current Matrix Beam headlamps, LED-based pixel light systems enable ideal lighting functions (e.g. projection of navigation information onto the road) to be activated in any given driving scenario. Moreover, compared to other light-modulating elements such as DMDs and LCDs, instantaneous LED on-off toggling provides a decisive advantage in efficiency. To generate highly individualized light distributions for automotive applications, a number of approaches using an LED array may be pursued. One approach is to vary the LED density in the array so as to output the desired light distribution. Another notable approach makes use of an equidistant arrangement of the individual LEDs together with distortion optics to formulate the desired light distribution. The optical system adjusts the light distribution in a manner that improves resolution and increases luminous intensity of the desired area. An efficient setup for pixel generation calls for one lens per LED. Taking into consideration the limited space requirements of the system, this implies that the luminous flux, efficiency and resolution image parameters are primarily controlled by the lens dimensions. In this paper a concept for an equidistant LED array arrangement utilizing distortion optics is presented. The paper is divided into two parts. The first part discusses the influence of lens geometry on the system efficiency whereas the second part investigates the correlation between resolution and luminous flux based on the lens dimensions. © 2017 SPIE.
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. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
Document Type: BookPart
Publishing status: publishedVersion
Issue Date: 2017
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 1,825 87.99%
2 image of flag of United States United States 51 2.46%
3 image of flag of China China 27 1.30%
4 image of flag of Korea, Republic of Korea, Republic of 16 0.77%
5 image of flag of Czech Republic Czech Republic 14 0.68%
6 image of flag of France France 13 0.63%
7 image of flag of Russian Federation Russian Federation 12 0.58%
8 image of flag of Taiwan Taiwan 10 0.48%
9 image of flag of United Kingdom United Kingdom 10 0.48%
10 image of flag of Hong Kong Hong Kong 9 0.43%
    other countries 87 4.19%

Further download figures and rankings:


Hinweis

Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.

Search the repository


Browse