Superb lens clarity, contrast and performance that competes with the best. A few limitations do little to detract from the ...

Powell prism (Powell Lens) is a specially designed aspheric optical prism, mainly used to convert Gaussian beams (such as laser beams) into linear light spots evenly distributed along a straight line.

This is the Fresnel lens, not one lens really, but numerous tiers of prisms. Lenses like this one turned simple flames into beams upon which sea captains could take their bearings, avoiding risk ...

The EVZero Range are the brand's latest pair of lightweight sunnies, and come packed full of optical and material tech, including Prizm lenses (which we'll get onto later). The EVZero Range ...