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Old 22nd Sep 2007, 19:53
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cwatters
 
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>Latest Lexus LS 600H has LED headlights.
>
>http://en.autos.sympatico.msn.ca/Gre...mentid=4742853

Reading between the lines I suspect that LEDs are only used for the standard low beam setting. eg not high beam. Still it's quite an achievment. This would appear to be confirmed here...

http://www.worldcarfans.com/2050418....headlamp-study

"Already, the LED headlamp prototype achieves a level of around 1,000 lumens luminous flux in the low beam, and has thus reached the level of a xenon headlamp. The luminous flux necessary for good high beam light cannot yet be attained on account of the lower luminance of LEDs. Hella's lighting specialists are convinced, however, that this will soon be achieved in the course of the further development of LEDs. The technical challenges that need to be solved by then involve thermal management in particular, as well as the development of new production processes and optical elements to accompany the LED technology."
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