The F-number of a photographic lens is a measure of its light-gathering ability, and is expressed as its aperture diameter ...

Laser engraving can bring personalized flair to countless projects while letting you explore your artistic side. Many DIY ...

A cheap magnifying glass mounted to the laser holder and a sunny day ... A large outdoor gantry with a big Fresnel lens that could etch a design onto a large piece of plywood would be a pretty ...

Doric Lenses Inc specializes in design of custom optical components. We also offer pigtailing LEDs or laser sources to fiber optics and collimation of laser diodes with our patented doric (tm) ...