mutant said:
Are there any other flashlights that use a fresnel lense like the Hi-Gain? I sure like the concept.
Hey there mutant.
I have a couple of lights that use the fresnel lens.
A very nice, 2AA, incandescent, REI brand headlamp that is nearly twenty years old. Its fresnel lens is circular, about 3 inches diameter. It is quite thin overall, barely thicker than the length of its incan bulb and socket. A well made headlamp, with good fit and finish. A very good beam for a lightweight incan headlamp. Throws well, and has a wide and usable, if ringy, spillbeam.
The other light is a thin, rectangular 2AAA flashlight, of no known brand. Has a square fresnel lens and throws a decent amount of light for its size, with a better beam than a 2AA MiniMag.
I'm surprised that more manufacturers don't make use of the fresnel lens. It gives the capability to duplicate the function of a full size reflector in a much thinner package.