Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!samsung!uakari.primate.wisc.edu!sdd.hp.com!hp-pcd!hpcvca!scott
From: scott@hpcvca.CV.HP.COM (Scott Linn)
Newsgroups: sci.electronics
Subject: Re: Sources for high-brightness red LEDs
Message-ID: <3340009@hpcvca.CV.HP.COM>
Date: 4 Dec 90 22:53:07 GMT
References: <10926@rama.UUCP>
Organization: Hewlett-Packard Co., Corvallis, Oregon
Lines: 14

/ hpcvca:sci.electronics / scott@hpcvca.CV.HP.COM (Scott Linn) /  3:22 pm  Dec  3, 1990 /

>HP makes ones up to 5 times brighter (25 Candela).  They are around $12.

I made a mistake.  The HP leds are min. 8 candela, typically 15
candela, and maximum 36 candela (all at 20mA).

By the way, if you are going to use an led in something like a
flashlight, you would be better off not looking at the strict candela
number, because most of the high-brightness leds have an extremely
small angle of light output (typically <= 4.5 degrees).  A
high-brightness, wide-angle led would be better for this application.

Scott Linn