Polaroid Eyewear layers are then fused to both sides of the UV absorbers, making the lens light, flexible and impact resistant. A scratch-resistant layer on both the outer surfaces completes the lens structure. Polaroid Eyewear Polaroid Eyewear manufactures polarized sunglasses and polarized lenses, as well as optical frames, reading glasses, and clip-on lenses. Polaroid Eyewear was a part of the StyleMark group and sold to the Safilo Group in November 2011. Polaroid headquarters is located in Padua (Italy). Edwin Land, born in 1909 in Connecticut, invented Polaroid, the world's first polarizing material for commercial use, in 1929. He founded the Polaroid Corporation
Folding camera the Polaroid SX-70 Instant film camera, and the Speed Graphic press cameras used folding designs into the 1970s. The typical amateur camera of the early 20th Century made various "postcard" sized negatives around 4" × 5". By the 1930s 6cm × 9cm cameras for either the 120 or 620 film size, were highly popular. The use of folding cameras declined in the late 1930s with advances in lens technology allowing superior enlargement, high quality images on smaller negatives, and shorter distances between the lens and the film. 35mm film made small-sized cameras practical without using bellows. Lens technology allowed 120/620