Originally Posted by u3b3rg33k
Well that's your opinion, and while you're entitled to it, it certainly seems to be lacking in common sense / logic.
I would very much like you to explain how a different light source makes an illumination system pointless.
It's not opinion, and it has nothing to do with common sense and logic. It has to do with the physics of how light sources work, and how lasers are different from things that aren't lasers.
If you really would like me to explain it, and aren't just being sarcastic, here goes:
By putting a phosphor in front of a laser, you lose all of the traits of the laser and replace them with those of the phosphor. A laser is coherent, and has a narrow output that is highly intense. Run a laser beam into a phosphor, and you lose coherence (arguably better to not have it in this application), and the output becomes broad and the intensity in any particular direction is dramatically reduced. It's no different than having a standard blue LED behind a phosphor, which means that aside from the OHMYGODLASERSPEWPEW buzzword, you don't actually accomplish anything by using a laser. Except it's more expensive and harder to design and implement.
That's all fine and good, and I can accept it as just flashy marketspeak for a CES concept showing. Except they seem to imply that it's the laser aspect of the headlights that allows for the large increase in range. If that's really the case, then I go back to my prior comment, which was that I would be intrigued to know how they were accomplishing that using a white source. If they are running it through a phosphor, then I'd want to know how they're maintaining the laserlike qualities that allow for the increase in range. It'd be even more interesting if they weren't using phosphors.
For the record, lasers are not inherently dangerous. At high power, sure, but considering normal headlights can be bright enough to "blind" drivers, lasers that are legitimately dangerous and would actually
blind drivers would never be used. Fortunately, there's a lot of room between "too dim to be useful" and "causes blindness." A relatively low-intensity beam would be eyesafe, yet still do a good job of lighting up a road at night.Edited by Mand12 - 1/13/15 at 12:04pm