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Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Radioshack used to sell a card that would re-emit visible light from an invisible IR source.
does anyone know where i can get one or if there still made? i cant seem to find one.
does anyone know of a better way to align and check IR laser light? i tried teh digital camera trick, but my source is to weak, i just see the whitish-purple from the laser muzzle.
Registered Member #65
Joined: Thu Feb 09 2006, 06:43AM
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Posts: 1155
Commercial:
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Old B&W CCD cameras with the IR filter removed are good across a wide range on IR, but temperature sensitive color changing films sometimes work better for alignment.
See if someone you know has a Sony camcorder with night shot and will let you borrow it. You could get a cheap CCTV cam with nightvision and use that. Or get a sacrificial webcam and remove the IR filter. If the dot is small enough, and your laser not too powerful, you could even take the lens off the camera and hit the image sensor directly to see the beam cross section magnified to however big your monitor is. Although if it's too powerful it will just bloom or kill the sensor. Hit up a thrift store or e junk place and your bound to find one for a few bux.
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Infrared detecting media...
