G - Physics – 09 – G
Patent
G - Physics
09
G
375/39, 375/49
G09G 3/00 (2006.01) G02F 1/133 (2006.01) G09G 3/02 (2006.01)
Patent
CA 1162668
COLOR DISPLAY SYSTEM ABSTRACT A projection and display system utilizes a modulated laser beam whose energy distribution in the "P" and "S" polarization planes is controlled by a half wavelength re- tardation plate. The laser beam is then deflected along the X and Y axes and passes through a dichroic polarizer cube which splits the beam to focus upon a P channel smectic liquid crystal display cell and an S channel smectic liquid crystal display cell to selectively form images on one or both of the display cells. At the same time, the formed images are projected by the use of light that is split into two colored light beams by a second dichroic cube and is reflected to back light the images in each of the display cells. The projected beams then pass back through the first dichroic cube where they are recom- bined and passed through a projection lens system to a suitable display screen. To selectively erase the informa- tion on either of the display cells, an AC bias is applied to that display cell during the laser scan thereof.
384915
Kidwell William J.
Tsai Robert C.
Gowling Lafleur Henderson Llp
Singer Company (the)
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