Optical transmission of "IR filters" on camcorder CCD's?

[Sutherland, Scott]

Posted to CCD-world:
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Hello:

I have read that on commercial camcorders a filter is used
to block NIR light from the CCD.  Does anyone know who
manufacturers these filters?  Can someone point me to a 
optical transmission curve of these filters so I can see the
% transmission in the visible, the cutoff wavelength/slope,
and the effective blocking in the NIR?

Thanks for any information.

Dr. Scott Sutherland
Senior Scientist
GAMMA-METRICS
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