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Author: Philipo Big funky green star, 20000 posts Old School Fool Add to my Favorite Fools Ignore this person (you won't see their posts anymore) Number: of 18089  
Subject: Re: Next for Headlamps: Lasers! Date: 10/18/2012 8:58 AM
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I'm no laser scientist but I work with them. That "Employing a layer of phosphor where several blue laser beams intersect, a secondary white light can be created with a potential for luminance about five times greater than the best current LED headlamps" sounds like a heck of a lot more than single digit milliwatt lasers. And the ideas of marking roads for context (edges of road, marking pedestrians, and marking directions ahead of vehicle) sound like convergent sources that would be of higher power than anything headlight like.

Initial problem I take from this laser concept is safety. AFIK even lowly Class 3a lasers (only <=5mW) are considered industrial in the EU and can't/shoudln't be aimed willy nilly and products need to assure & be certified that no single point of failre or use allows for harm.....as for "Lasers already are used at concerts, for example, to project images on a wall" those lasers keep moving to lower avg fluence concerns and the walls are situated to avoid direct source to eye alignment.

This am I'm headed into work to fix a laser galvo problem - I'm quite glad that at the end of what will be another 12 hour day I won't have to content with my Ford's headlights being servoed properly becuase they're laser based nor some other jerk's misaligned galvo driven laser headlights blinding me on the 2 lane straigts.
B
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