Patent
Polarization recapture system for liquid crystal-based data projectors
Thomas J. Haven,Kurt R. Munson +1 more
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TLDR
In this paper, a projection display system includes a light source emitting a randomly polarized light and a polarization recapture system including a tunnel integrator and a transmitting/reflecting polarizer coupled to the output end of the tunnel.Abstract:
A projection display system includes a light source emitting a randomly polarized light and a polarization recapture system including a tunnel integrator and a transmitting/reflecting polarizer coupled to the output end of the tunnel integrator. The input end of the tunnel integrator includes an input aperture and a reflective inside surface coated with a quarter wave retarder. In operation, the randomly polarized light enters the tunnel integrator through the input aperture. The polarization recapture system transmits light having a first polarization as polarized light output and recycles light having a second polarization orthogonal to the first polarization. The light having the second polarization is reflected by the transmitting/reflecting polarizer back into the tunnel integrator. The polarization recapture system recycles the light having the second polarization by reflecting and reorienting the light having the second polarization to light of the first polarization.read more
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References
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Patent
Broadband wire grid polarizer for the visible spectrum
TL;DR: In this article, a broadband wire grid polarizer (400) for the visible spectrum has a plurality of elongated elements (1240) supported on a substrate (1210), and a region having a lower refractive index than the substrate is disposed between the elements and the substrate to reduce the longest wavelength at which resonance occurs.
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TL;DR: An image display apparatus which employs a polarization-sensitive scattering element (PSSE) is described in this article, where a light source is used to illuminate a panel which modulates light in order to form an image.
Patent
Polarizer apparatus for producing a generally polarized beam of light
Douglas P. Hansen,John Gunther +1 more
TL;DR: In this paper, a polarizing system having a light source (23) and a polarising device (10) is described, where the polarizing device is disposed in an unpolarized source light beam for transmitting a transmitted light beam (24) having a first polarization and reflecting a reflected light beam having a second polarization.
Patent
Dual mode reflective/transmissive liquid crystal display apparatus
Douglas P. Hansen,John Gunther +1 more
TL;DR: In this paper, a dual-mode LCD device has an LC material disposed between a first polarizer and a second reflective polarizer, and a light source is disposed behind the second polarizer.
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Single panel color projection video display improved scanning
TL;DR: A color projection video system utilizing only a single light valve is described in this paper, where a white light source is separated into red, green and blue bands, and the image is projected by a projection lens onto a viewing surface, such as a screen.