Optical scanner unit having recursive optical system

Details Optical scanner unit having recursive optical system Optical scanner unit having recursive optical system

1992-02-26

1995-10-10

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359201, 359204, 359216, G02B 532, G02B 2610

Patent

active

054575508

ABSTRACT:
An optical scanner unit for scanning a document includes a laser unit for emitting a laser beam used for scanning the document, an optical system in which the laser beam emitted from the laser unit travels to the document and a reflection light beam obtained by reflection of the laser beam on the document can turn back through the optical system, the optical system having a scanning device for moving the laser beam which passes through the optical system so that a two dimensional scanning of the document is carried out by the light beam, and an optical sensor for detecting the reflection light beam turning back through the optical system, wherein an image formed on the document is read based on results obtained by the optical sensor.

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patent: 4415224 (1983-11-01), Dickson
patent: 4540247 (1985-09-01), Nishi et al.
patent: 4561717 (1985-12-01), Kataoka et al.
patent: 4738499 (1988-04-01), Mikami et al.
patent: 4832429 (1989-05-01), Nagler
patent: 5064258 (1991-11-01), Inokuchi et al.
patent: 5113279 (1992-05-01), Hanamoto et al.
patent: 5251055 (1993-10-01), Koide

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