Optical read out apparatus using a roof mirror lens array

Details Optical read out apparatus using a roof mirror lens array Optical read out apparatus using a roof mirror lens array

Filed on

1986-05-22

Date issued

1988-04-19

Examiner

Westin, Edward P.

Patent Class

Radiant energy

SubClass

Photocells; circuits and apparatus

SubSubClass

Optical or pre-photocell system

Other Related Categories

250239, 250578, 358293, H01J 316

Type

Patent

Status

active

Patent number

047391596

Description

ABSTRACT:
A document readout device reads out a document by forming an image of a linear area of the document on an unmagnification sensor through an image-forming optical system. The document readout device has a roof mirror array, a lens array, an optical-path separator, one or two mirror members, a housing, an unmagnification sensor, and one or two line illuminating devices. The housing has a pair of slits, one of which is covered by the unmagnification sensor, with the other slit being positioned for introducing light into the housing. The roof mirror array, the lens array, the optical-path separator, and the mirror member or members are retained in the housing in certain mutual positional relationship. The unmagnification sensor and the line illuminating unit or units are integrally mounted on the housing. The roof mirror array, the lens array, and the optical-path separator jointly constitute the image-forming optical system. An image-forming light ray from the image-forming optical system is guided by the mirror member or members toward the unmagnification sensor.

REFERENCES:
patent: 4220978 (1980-09-01), Rhyins et al.
patent: 4583126 (1986-04-01), Stoffel
patent: 4587418 (1986-05-01), Shirakosh et al.
patent: 4644159 (1987-02-01), Miura

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