Image reading apparatus capable of reading a projected image and

Details Image reading apparatus capable of reading a projected image and Image reading apparatus capable of reading a projected image and

1987-07-06

1991-02-05

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Picture signal generator

353494, 353497, H04N 104

Patent

active

049910302

ABSTRACT:
An image reading device capable of reading a projected image has a lens array for forming an image from the projected light. Upbeam of the lens array is disposed a diffusion member which diffuses the luminous flux of the projected light. Preferably, a Fresnel lens is disposed to receive the projected light, and the diffusion member is a lower surface of the Fresnel lens which has been subjected to a surface-roughening treatment.

REFERENCES:
patent: 3185050 (1965-05-01), Huber et al.
patent: 4455577 (1984-06-01), Tokuhara
patent: 4539482 (1985-09-01), Nose
patent: 4636062 (1987-01-01), Ohno et al.
patent: 4675727 (1987-06-01), Sekizawa et al.
patent: 4696552 (1987-09-01), Hattori et al.
patent: 4723154 (1988-02-01), Kuwayama
patent: 4742240 (1988-05-01), Yamanishi et al.
patent: 4751584 (1988-06-01), Midorikawa
Patent Abstracts of Japan, vol. 6, No. 37 (E-97)[915], Mar. 6, 1982 (Japanese Kokai 56-154868, Nov. 30, 1981).
Patent Abstracts of Japan, vol. 8, No. 17 (E-223)[1454], Jan. 25, 1984 (Japanese Kokai 58-178660, Oct. 19, 1983).

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