Re: IR filters

["scott miller" <macatawa@hotmail.com>]

I have a couple PIAA 959s in my garage, they seem ideal candidates for 
this modification.  All metal, they should take the heat of a big bulb.  
Small, so smaller IR filter needed, and tidy.  How big a bulb?

IR questions:  Aren't plastics notoriously bad at passing a wide 
spectrum of light (optical band-pass filters)?  Would plastic engineered 
to pass visible tend to absorb IR?  Might some clear plastic be 
available that absorbs a lot of IR?  Headlights and front licence plates 
seem to be the main targets of laser, could they be covered with such a 
material?  I know I can get spectrum absorbance curves, what's the 
frequency/wavelength I should be looking for?  904 nanometers?

Scott

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