Polaroid Eyewear Such glasses could screen out glare rather than simply darken the landscape. Land and Wheelwright contracted to begin production of Polaroid Day Glasses, a longtime source of revenue for Polaroid. With venture capital from railroad tycoon W. Averill Harriman and merchant banker and part-time songwriter James P. Warburg, Edwin Land, George Wheelwright, and Julius Silver incorporated Polaroid Corporation on September 13, 1937. Polaroid began the manufacturing of polarizing sheet for windows in railroad observation cars. In 1939 Day Glasses were the source of most of Polaroid's $35,000 profit. Although sales rose to $1 million in 1941, the company's 1940 losses
Polaroid type 55 series film) requires a Polaroid Model 545 Film Packet Back. This is mounted onto the back of a camera, usually a large format 4x5 inch type, in place of a conventional film carrier. A self-contained waterproof transparent sleeve containing positive and negative film sheets and a small reservoir of reagent gel is inserted into the Packet Back, an exposure made and the Packet Back is removed. By flipping a lever and withdrawing the sleeve the gel is squeezed between the negative and positive emulsion layers. After the set time the layers can be peeled apart. some gel is retained at