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 This type of managerial failure is also known as the success trap. After the bankruptcy, the Polaroid brand was licensed for use on other products with the assistance of Skadden, Arps, Slate, Meagher & Flom. In September 2002, World Wide Licenses, a subsidiary of The Character Group plc, was granted the exclusive rights for three years to manufacture and sell digital cameras under the Polaroid brand for distribution internationally. Polaroid branded LCDs and plasma televisions and portable DVD players had also appeared on the market. On April 27, 2005, Petters Group Worldwide announced its acquisition of PHC. Petters has in