Does anyone know if you can use another lens or filter on an 850 nm IR illuminator to make it invisible? I have a 940 nm illuminator, but it doesn't nearly project far enough. So, I know LEE has some filters, and wondering if it's possible to put something on the illuminator to make the red LED's less visible. The link to the 850nm illuminator is below.
http://www.mcmelectronics.com/produ...ics.com/search?cataf=&view=list&w=illuminator
http://www.mcmelectronics.com/produ...ics.com/search?cataf=&view=list&w=illuminator
