Polaroid (polarizer) Polaroid (polarizer) Polaroid is a type of synthetic plastic sheet which is used as a polarizer or polarizing filter. A trademark of the Polaroid Corporation, the term has since entered common use. The original material, patented in 1929 and further developed in 1932 by Edwin H. Land, consists of many microscopic crystals of iodoquinine sulphate (herapathite) embedded in a transparent nitrocellulose polymer film. The needle-like crystals are aligned during manufacture of the film by stretching or by applying electric or magnetic fields. With the crystals aligned, the sheet is dichroic: it tends to absorb light which is polarized parallel to
Polaroid Corporation cameras have again become available on the market, developed and manufactured by a group called The Impossible Project, at the former Polaroid production plant in Enschede, Netherlands. Austrian photographer Florian Kaps, the owner of the largest online vendor for SX-70 films and organizer of the web-based instant photo gallery Polanoid.net, had bought the approximately 500,000 film packages that were on stock. He teamed with André Bosman, a former head of film production in the large Polaroid film factory at Enschede, designed a plan to redesign the SX-70/600 film system in collaboration with Ilford Photo, and convinced the Polaroid owners to