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.

I tried the Mercenary sunglasses with Prizm Golf lenses for this review and found them to be exactly as advertised: they enhance colour and contrast and deliver the goods in a variety of weather ...

You may think that blurry vision, headaches, and dry eyes all come with aging, but there are other culprits too. This is especially true if you happen to be a staunch workaholic or an ...

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 ...