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At this year's LASER World of PHOTONICS

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trade fair, scientists from Fraunhofer IOF will present the second functional prototype of a segmented high-beam unit which minimizes light scatter. The unit is based on a multi-aperture projector which has been in continuous development for several years. 200,000 micro-optical elements focus the light optimally in the vehicle's direction of travel.

The segments can be deactivated as necessary, either individually or in groups, without time delay. Combined with modern vehicle sensor technologies, this makes it possible to effectively prevent the high beam from blinding oncoming motorists. In addition, the design requires significantly less installation space compared to conventional systems.

Not only can the light be dimmed specifically for oncoming traffic, it is even possible to protect pedestrians and e.g. cyclists without lights from being impeded by glare. This increases the level of safety for all road users.

"We're developing the headlamp as part of the WISA project SSL—StructuredSpotLight—with Fraunhofer-internal funding. In-house research projects with commercial relevance enable cross-institute precompetitive research and lay the foundation for subse-uent industry development projects," says Stephanie Fischer, research associate in the Micro-Optical Systems department at Fraunhofer IOF.

The project relied on a group of advisors from automotive manufacturers and component suppliers. They were thus able to provide input on the desired parameters of the high and low beam light as well as on the mechanical design requirements. Participants in the group include such renowned brand names as AUDI, HELLA, Trilux and OSRAM.

https://phys.org/news/2019-06-source-freedom-added-safety.html