Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-04-06
1996-02-20
Gross, Anita Pellman
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 59, 359 68, 345 89, G02F 11343, G02F 11335, G09G 336
Patent
active
054934281
ABSTRACT:
A multi-flow type optical exposure system for a color video printer. The system comprises a LCD part 10 comprising, by red(R), green(G) and blue(B) color lines, a plurality of liquid crystal element lines, and a color filter part 10 comprising, by the red(R), green(G) and blue(B) lines, a plurality of color filters corresponding to the R, G and B color lines of the LCD pan 10, respectively, the color filter part having different transmissivities by the lines of each color R, G, B. The color filter part 20 has a transmissivity ratio by the R, G and B lines described as 1/K.sup.0 :1/K.sup.1 :- - - :1/K.sup.n-1, wherein K is the number of gradations of each liquid crystal element. The present invention provides advantage in that it increases the number of color gradations even though it uses conventional inexpensive liquid crystal elements of 8 gradations, thereby improving the image quality and reducing the manufacturing cost of the color video printer.
REFERENCES:
patent: 4410887 (1983-10-01), Stolov et al.
patent: 5056893 (1991-10-01), Holz et al.
patent: 5066109 (1991-11-01), Kuratate et al.
patent: 5121235 (1992-06-01), Matino et al.
patent: 5157524 (1992-10-01), Dijon et al.
patent: 5208689 (1993-05-01), Hartmann et al.
patent: 5223960 (1993-06-01), Kim
patent: 5317437 (1994-05-01), Katakura
patent: 5319480 (1994-06-01), McCartney
Goldstar Co. Ltd.
Gross Anita Pellman
LandOfFree
Optical exposure system for color video printer with three group does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical exposure system for color video printer with three group, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical exposure system for color video printer with three group will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1360490