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Shark Transportation Technology

CES: Laser Headlights Edge Closer To Real-World Highways 295

jeffb (2.718) writes "Audi will display laser-headlight technology on a concept car at the 2014 Consumer Electronics Show, joining BMW, whose plug-in hybrid should reach production in 2014. A November article on optics.org describes the technology in more detail. This approach does not scan or project a 'laser beam' from the car; instead, it uses blue lasers as highly efficient light emitters, and focuses their light onto a yellow phosphor, producing an extremely intense and compact white light source and then forming that light into a conventional headlamp beam. The beam isn't coherent or point-sourced, so it won't produce the 'speckling' interference effects of direct laser illumination, and it won't pose specular-reflection hazards. It's just a very bright and very well-controlled beam of normal white light.
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CES: Laser Headlights Edge Closer To Real-World Highways

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  • Re:Movie (Score:5, Interesting)

    by fluffy99 ( 870997 ) on Sunday January 05, 2014 @11:09PM (#45875369)

    Oh, you want to know why your HID kit isn't available in the USA? It FAILS DOT SAFETY REGULATIONS BECAUSE OF THE SEVERE AMOUNT OF BLUE LIGHT EMITTED.

    You do realize that DOT regulations (not laws, just guidelines which most states adopt in their vehicle code) REQUIRE light to be thrown upwards for overhead street sign illumination. The euro-spec headlights have a much sharper horizontal cutoff which while not passing US DOT standards, throw much less light above horizontal into oncoming drivers eyes.

    You are correct that DOT specifies chromatic limits for "white" headlights, but that range is pretty wide. http://www.fmcsa.dot.gov/rules-regulations/administration/fmcsr/fmcsrruletext.aspx?reg=571.108 [dot.gov].

    The cheap aftermarket HID retrofit kits that place an HID bulb inthe stock housing are dangerous because they have such a horrible light pattern that throws a lot of dazzling light into oncoming drivers faces. They are illegal in most of Europe. They are also illegal in most of the US states, although I've never actually heard of someone getting a ticket - just failing a safety inspection.

  • blinding lights (Score:5, Interesting)

    by ukemike ( 956477 ) on Monday January 06, 2014 @03:28AM (#45876309) Homepage

    Two: what are you driving? I've got a... car. With the cut-offs in my HID projectors, 100% of my light emission is at or below the bumper level of a car in front of me. Even were I in an SUV, I'd be getting your trunk deck. Excluding anyone driving a monster truck, proper HID projectors aren't causing your problem. Unless you're driving a skateboard. Laying down.

    Lots of arguing going on but the simple fact is that a very large percentage of lights on cars on the streets these days are entirely too bright. I don't really care if their high beams are on, their lights are poorly adjusted, or if their lights are improperly installed they are too bright and it is dangerous and extremely unpleasant. And regardless, even when adjusted and installed properly and not on high beams all it takes is going over a slight rise and presto blinding lights that are way too bright are shining in my eyes.

    Laser lights will significantly compound this problem. They should not be allowed. I honestly believe that we should ban HID lights and go back to 55W halogens being the brightest lights available.

"I prefer the blunted cudgels of the followers of the Serpent God." -- Sean Doran the Younger