Thread: Aiming lamps
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Unread 11-04-2016, 17:52
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Al Skierkiewicz Al Skierkiewicz is offline
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Re: Aiming lamps

Guys, I have it on good authority from an industry expert that white LED flashlights, greater that 100 lumens are a vision hazard. That is further complicated if your device has a lens to reduce the field of the emission. You do not need light output in excess of that level to be effective. Blue LEDs may have serious emission in the visible spectrum that may exceed safety standards depending on type. LRIs are very likely to be involved but so too will UL Safety advisors. IEC 62471:2006 Photobiological Safety of Lamps and Lamp Systems is the defining doc on this hazard. My recommendation is that you provide specifications on the output of your flashlight in W/m^2. If it blinds someone for even a short time, please consider that it is too bright. Even temporary blindness can cause people in the pits to trip over things they cannot see including the general public. You can use neutral density filters (available on line or from photo supply stores) to reduce the output. You can even use colored filters to reduce output and tune the source to the color your camera is looking for.
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Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.

Last edited by Al Skierkiewicz : 11-04-2016 at 17:55.
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