Color image reading apparatus with volume hologram

Details Color image reading apparatus with volume hologram Color image reading apparatus with volume hologram

1993-04-05

1994-07-12

Brinich, Stephen

Facsimile and static presentation processing

Natural color facsimile

Scanning

348336, H04N 904

Patent

active

053293843

ABSTRACT:
A color image reading apparatus includes a plurality of line sensors formed by arranging a plurality of one-dimensional sensor arrays on a single substrate, a focusing optical system for focusing an object on the sensors, and a volume hologram, arranged in the optical path between the focusing optical system and the sensors, for color-separating light from the object into a plurality of color components and guiding the plurality of color components to the corresponding one-dimensional sensor arrays.

REFERENCES:
patent: 4007481 (1977-02-01), St. John
patent: 4654698 (1987-03-01), Langworthy
patent: 4806750 (1989-02-01), Vincent
patent: 4866512 (1989-09-01), Hirosawa et al.
patent: 4933751 (1990-06-01), Shinonaga et al.
patent: 4960314 (1990-10-01), Smith et al.
Kogelnik, "Coupled Wave Theory for Thick Hologram Gratings," The Bell System Technical Journal, vol. 48, Nov. 1969, No. 9, pp. 2909-2947.

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