Infrared LED's and CCD cameras

Steve Loboyko (slob@mindspring.com)
Wed, 1 Feb 1995 23:03:45 -0500


I post this in the event that anyone is a hardware hacker. I'm trying to get
hardware for CU-SeeMe together on the cheap.

I was aware that CCD's are sensitive to infrared, so I stuck 3 in my
homemade case for the CCD camera module bought from JD Micro (see previous
postings). The camera is powered by 12V off of my PC, so I put 220 ohm
dropping resistors for each (a bit light).

Wow!

It really does a nice job of filling in, getting rid of my backlighting
problem, and, of course, you can't see the light so it is not blinding. In
fact, it works in total apparent darkness, although the picture is a bit
grainy (this is _scary_!)

I used radio shack high-brightness infrared LEDS (276-143c).

My other camera, a prebuilt $90 CCD camera also from JD, is even _more_
sensitive for some reason.

I think that any desktop CCD camera should come with these. It might be
entertaining to put an IR filter on one of those videocamera
lamps...Royalties apply.

________________________________________

Steve Loboyko
Software Engineer
cR Solutions, Incorporated
11285 Elkins Rd Suite G-1
Roswell GA 30076

slob@mindspring.com
http://www.mindspring.com/~slob/home.html

________________________________________

Unjustified flamer's computers will be destroyed.