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Looking for a Infrared filter that allows visible spectrum through?

Former Member over 15 years ago

Hello,

Does any one know of a filter that filters IR but not the visible spectrum?

Thank you,

Richard

0 WestfW over 15 years ago

There is one inside most digital cameras; they're usually slightly blueish in color.
I've heard that you can use some copper sulfate solution (also slightly blueish.)
http://www.natscience.com/Uwe/Forum.aspx/optics/1023/Material-transparent-to-light-but-opaque-to-IR
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0 Former Member over 14 years ago in reply to WestfW

http://shop.ebay.com/?_from=R40&_trksid=p5197.m570.l1313&_nkw=ir+filter&_sacat=See-All-Categories , Ebay has lots of IR filters for cameras, you can also find them on alibaba if you want to find a supplier in china for production.
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0 jvdberg@ieee.org over 14 years ago

The most powerful (but also most expensive) IR filters are used in high power film projectors, as used in movie theatres. This filter is placed between the lamp and the film to hold (most of) the heat of the lamp away from the film.
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