Optical illumination system and projection display apparatus usi

Optics: image projectors – Unitary plural refracting surfaces

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353102, 362268, 362309, G03B 2114

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active

054185831

ABSTRACT:
An optical illumination system includes a radiation source, a condensor, a first lens array including a plurality of first lenses, and a second lens array including a plurality of second lenses. The first lens array converges partial luminous fluxes, the number of which is the same as the number of first lenses, onto the second lenses paired with the first lenses. The second lens array transmits each of the partial luminous fluxes to an object region to be illuminated in such a manner that the partial luminous fluxes are superimposed on each other at the object region. Configurations of the apertures of the second lenses are different from each other and the second lenses are arranged in close contact with each other with the effective region of the second lens array approximating the smallest possible circle.

REFERENCES:
patent: 4457600 (1984-07-01), Hall
patent: 4497015 (1985-01-01), Konno et al.
patent: 4547037 (1985-10-01), Case
patent: 4619508 (1986-10-01), Shiboya et al.
patent: 4769750 (1988-09-01), Matsumoto et al.
patent: 4769750 (1988-09-01), Matsumoto et al.
patent: 4939630 (1990-07-01), Kikuchi et al.
patent: 4988188 (1991-01-01), Ohta
patent: 5098184 (1992-03-01), van den Brandt et al.
Patent Abstracts of Japan, vol. 005127, Aug. 15, 1981, for JP 56-064837.
Kazuhiko Takeuchi et al., "A 750-TV-Line-Resolution Projector Using 1.5-Megapixel a-Si TFT LC Modules", SID 91 Digest, pp. 415-418.

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