You have the option of using lasers or LEDs made for long wavelength fiber optic communications at 1550 nm. This wavelength is considered "eye safe". Note that the term "eye safe" is a bit of a misnomer because any laser radiation can harm eyes or skin if the power is high enough. However, eye-safe lasers are at a wavelength that gets absorbed by water molecules. Hence, such radiation does not get inside the eye to damage the sensitive retina, but is absorbed at the surface of the eye, in tears, basically.Thanks SgtWookie, I checked your website suggestion out and its interesting. My intention was to use it as a trip beam for wildlife photographs. I was concerned with a laser pointer type the animals eyes might be damaged but did not realise an infrared laser can do the same.Ummm...rethink, again. Anyway your help is always appreciated. JDR04
by Jake Hertz
by Duane Benson
by Jake Hertz