Image reading apparatus

Details Image reading apparatus Image reading apparatus

1993-05-24

1994-11-08

Coles, Sr., Edward L.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250226, 359566, 359569, 359571, H01J 4014

Patent

active

053629574

ABSTRACT:
An image reading apparatus is provided with a light-receiving device, an imaging optical system and a blazed diffraction grating. In the light-receiving device, a plurality of line sensors are arranged on the same substrate. An image of an object to be imaged is formed on the light-receiving device by the imaging optical system. The blazed diffraction grating is arranged in an optical path between the imaging optical system and the light-receiving device. The blazed diffraction grating color-separates a light beam from the object to be imaged into a plurality of light components. The diffraction grating is so constructed to have grating lines with at least two different grating heights.

REFERENCES:
patent: 5173599 (1992-12-01), Setani
patent: 5221835 (1993-06-01), Setani
patent: 5223703 (1993-06-01), Setani

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