Image reading device

Details Image reading device Image reading device

1984-02-24

1987-02-17

McIntosh, John P.

Radiant energy

Photocells; circuits and apparatus

Housings

250216, 250578, H01J 316

Patent

active

046441590

ABSTRACT:
An image reading device, such as may be employed in a facsmile transmitter, laser beam printer, copying machine, or the like, in which assembly and alignment of optical components of the system is simplified and stray light is prevented from reaching a photoelectric conversion element. The optical system and the photoelectric conversion element are fixedly secured to a single supporting frame in a desired predetermined positional relationship. The supporting frame is detachably mounted on a mounting surface of an image reading device body. The optical system includes a filter or dust-proof transparent cover, an optical path changing mirror, and an image forming lens, all of which are secured to the supporting frame. A light-quantity-distribution correcting light-shielding plate may be provided in front of the image forming lens to provide an even distribution of image light on the photoelectric conversion element.

REFERENCES:
patent: 3214596 (1965-10-01), Schwerdt, Jr. et al.
patent: 4201910 (1980-05-01), Copeland et al.
patent: 4495422 (1985-01-01), Wiggins

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