Optics: image projectors – Composite projected image – Multicolor picture
Patent
1998-05-19
2000-01-04
Dowling, William
Optics: image projectors
Composite projected image
Multicolor picture
349 8, G03B 2114
Patent
active
060102217
ABSTRACT:
An analyzing-synthesizing optical system has the structure in which for each of the three primary colors of R, G, and B, there are provided a light valve for modulating incident light and a polarization beam splitter for guiding specific polarized light to this light valve and extracting only modulated light coming from the light valve to output it, wherein these light valves and polarization beam splitters are fixed as integrated with a synthesizing optical system comprising a cross dichroic prism and wherein optical path lengths of optical paths of the respective colors are adjusted to be almost equal to each other. A projection image display apparatus comprises the analyzing-synthesizing optical unit.
REFERENCES:
patent: 5028121 (1991-07-01), Baur et al.
patent: 5357289 (1994-10-01), Konno et al.
patent: 5605390 (1997-02-01), Brice et al.
patent: 5653520 (1997-08-01), Kato
patent: 5653522 (1997-08-01), Loucks
patent: 5658060 (1997-08-01), Dove
patent: 5786934 (1998-07-01), Chiu et al.
patent: 5798819 (1998-08-01), Hattori et al.
Hattori Tetsuo
Kusano Masaaki
Maki Hiroshi
Numazaki Kiyoshi
Sekine Atsushi
Dowling William
Nikon Corporation
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