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A filter to remove visible light and only pass infrared light
in different wavelenghts.
Known filter products:
Inexpensive gelatine filter.
87A and 87B are no longer produced.
87 starting at 750nm, 87C at 800nm, 87B at 850nm, 87A at 950nm
High quality filter starting at 720nm, which includes some visible light.
High quality filter starting at 900nm
High quality filter starting at 1000nm
High quality filter starting at 1000nmInfrared Filters
The Kodak Wratten 87, 87A, 87B, 87C
The Hoya R72
The Hoya RM90
The Hoya RM100
The M&K 1000