torben@uhmanoa.UUCP (09/24/87)
Does anyone now of a good source for some high-power IR LED's? I'd like at least 100mW emitted power. But I'd prefer higher. Also, they need to have very fast switching times and as high a duty cycle as possible. Any and all leads appreciated. I wouldn't mind laser LED's, but I cannot afford to pay more than a couple of hundred dollars max a piece. ---torben -- Torben N. Nielsen,Department of ICS,2565 The Mall,Honolulu, HI 96822 torben@uhmanoa.ics.hawaii.edu
agn@unh.cs.cmu.edu.UUCP (09/24/87)
You can buy IR-laser diodes in the 7 to 25 W (right watt!) range for $14.88
(order number R6MI60468) from:
BNF Enterprises (617) 531-5774
119 Foster Street
P.O. Box 3357
Peabody, MA 01961-3357
This is from a March '87 catalog. These are probably surplus devices or
devices that failed some quality inspection...
In any event, such a diode is downright dangerous: high power IR can harm the
eye even if you can't see it. It is also not easy to drive such a device:
you need to deal with fairly high current and such diodes tend to be rather
sensitive.
--
-- Andreas Nowatzyk (DC5ZV)
Carnegie-Mellon University Arpa-net: agn@unh.cs.cmu.edu
Computer Science Department Usenet: ...!seismo!unh.cs.cmu.edu!agnmagore@watdcsu.UUCP (09/25/87)
In article <1015@unh.cs.cmu.edu> agn@unh.cs.cmu.edu (Andreas Nowatzyk) writes: >You can buy IR-laser diodes in the 7 to 25 W (right watt!) range [order info deleted] ... >In any event, such a diode is downright dangerous: high power IR can harm the >eye even if you can't see it. It is also not easy to drive such a device: >you need to deal with fairly high current and such diodes tend to be rather >sensitive. Yes dangerous is right! Note that about a 5/1000th of a watt of laser IR that is well focused can do _very_ serious damage to an eye and that about a 1/5th of a watt can start paper on fire if the beam is well focused ! [ Running full on - not pulsed mode of course ] >-- > -- Andreas Nowatzyk (DC5ZV) Best Regards, # Mike Gore # Institute for Computer Research. ( watmath!mgvax!root - at home ) # These ideas/concepts do not imply views held by the University of Waterloo.