Patent
Liquid-crystal matrix-configured imaging device having resolution doubled by birefringence
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TLDR
In this paper, a two-position optical deflector device is used to increase the resolution of a liquid-crystal imager, which is used downstream of an actual LCR imager with row-and-column crossed electrodes sandwiched between a polariser and an analyser.Abstract:
The device makes it possible to increase resolution. It is used downstream of the actual liquid-crystal imager 1 consisting of a cell 2 with row-and-column crossed electrodes sandwiched between a polariser 3 and an analyser 4. This imager is followed by a two-position optical deflector device 5 which may consist of a liquid-crystal polarisation inverter (reverser) 6 and a birefringent medium 7 of the Wollaston compensator type having two birefringent prisms. The invention may be applied to high-resolution avionics displays.read more
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Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement with phase coordinated polarization switching
TL;DR: In this paper, a method of producing a displayed image using a passive display illuminated by a light source is characterized in controlling the light source to obtain a desired amount of information, gray scale and/or color characteristics.
Patent
Optical display system and method with optical shifting of pixel position including conversion of pixel layout to form delta to stripe pattern by time base multiplexing
TL;DR: In this article, the first raster line of picture information is removed from the video signal, and each subsequent line of image information (data) is displaced upward by a distance equal to one and one half times horizontal pixel pitch.
Patent
Backlit display with improved dynamic range
TL;DR: A display is backlit by a source having spatially modulated luminance to attenuate illumination of dark areas of images and increase the dynamic range of the display as discussed by the authors, which is called backlit display backlighting.
Patent
Display for mosaic pattern of pixel information with optical pixel shift for high resolution
TL;DR: In this article, an optical path changer is operated to shift the optical path, and the pixel pattern to be optically shifted is displayed on the image display system in every field in synchronism with the shifting of the optical paths by the OPC changer.
Patent
Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement
TL;DR: A passive dithering display system as mentioned in this paper includes an optical display including a plurality of pixels with dead space between the pixels for producing an image, and a birefringent material for shifting one polarization component of the image relative to a second polarization component such that the shifted polarization component lies in the dead space.
References
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Patent
Apparatus for displaying images wtih reduced coarseness
Toshiro Watanabe,Akio Ohkoshi +1 more
TL;DR: In this paper, a double refraction plate is disposed in front of the image display screen so that the light rays from the picture display elements are double-refracted by each double refractive plate.