Does anyone know if there is a filter for an 850nm IR red LED that can be used to make the "red" less intense or invisible without compromising the functionalitity of it? I have that specific illuminator, but want to make it less visible. It is about 4 inches in diameter, and 40 LED's. The 940nm illuminators don't project near far enough. I am trying to make it a little more discreet. I have heard about LEE filters, but have no experience with them.....