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The needle-like crystals are aligned during the 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 the direction of crystal alignment but to transmit light which is polarized perpendicular to it.
A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers to display information. Liquid crystals do not emit light directly [1] but instead use a backlight or reflector to produce images in color or monochrome.
RealD 3D cinema technology is a polarized 3D system that uses circularly polarized light to produce stereoscopic image projection. The advantage of circular polarization over linear polarization is that viewers are able to tilt their head and look about the theater naturally without seeing double or darkened images. [3]
Polaroid Corporation was an American company best known for its instant film and cameras, which now survives as a brand for consumer electronics. The company was founded in 1937 by Edwin H. Land, to exploit the use of his Polaroid polarizing polymer. [1] Land and Polaroid created the first instant camera, the Land Camera, in 1948.
A polarized 3D system uses polarization glasses to create the illusion of three-dimensional images by restricting the light that reaches each eye (an example of stereoscopy). To present stereoscopic images and films, two images are projected superimposed onto the same screen or display through different polarizing filters.
A polarizer or polariser is an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations. [1][2][3][4] It can filter a beam of light of undefined or mixed polarization into a beam of well-defined polarization, known as polarized light.
For almost 3 years, Mitsubishi Rayon Co. Ltd. was the only manufacturer. In 2010, Eastman Chemical announced a 70% increase in cellulose triacetate output at its Kingsport, Tennessee manufacturing site to meet the increasing demand for the chemical's use as an intermediate in the production of polarized films for liquid crystal displays. [2] [3]
The MasterImage 3D MI-CLARITY3D system for cinemas is a polarized 3D system that is based on the projector presenting a spinning polarized filter, which contains alternating segments of circularly polarized material. Mounted in front of the projector lens, this filter is synchronized to the projected images, giving each frame a polarization ...
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