Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1994-02-14
1995-12-26
Lerner, Martin
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
250548, 25055901, 355311, 355317, G02B 532, G02B 2610, G01N 2186, G01V 904
Patent
active
054792746
ABSTRACT:
An image scanning apparatus can obtain, using a simple optical detection system, original sheet information including size and displacement information of an original sheet before an image scanning operation starts. The image scanning apparatus comprises a single beam emitting unit for emitting a coherent first beam. A deflecting unit deflects the first beam so that the first beam traces a predetermined scan line on a plane including a surface of the original sheet. A second beam is generated by reflection of the first beam at the surface of the original, and the second beam is input to the sensing unit via the deflecting unit. The original sheet information is obtained in accordance with the detection of a sharp change in the intensity of the second beam received by the sensing unit with reference to the scanning position of the first beam.
REFERENCES:
patent: 4165464 (1979-08-01), Ikeda et al.
patent: 4224509 (1980-09-01), Cheng
patent: 4333006 (1982-06-01), Gorin et al.
patent: 4761046 (1988-08-01), Funato
patent: 4873550 (1989-10-01), Watanabe
patent: 4924262 (1990-05-01), Budnik
patent: 5032867 (1991-07-01), Nagata et al.
patent: 5036354 (1991-07-01), Miyamoto
patent: 5198853 (1993-03-01), Ichihara et al.
patent: 5252991 (1993-10-01), Storne et al.
patent: 5258862 (1993-11-01), Harris
patent: 5260725 (1993-11-01), Hammond
patent: 5328166 (1994-07-01), Hokamura
patent: 5387968 (1995-02-01), Wakikaido et al.
Lerner Martin
Ricoh & Company, Ltd.
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