Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1997-05-06
1999-03-16
Coles, Edward L.
Facsimile and static presentation processing
Facsimile
Picture signal generator
358474, 358412, 358487, H04N 104, H04N 136
Patent
active
058837272
ABSTRACT:
The present invention refers to an image scanning module for creating an optical image of a scanned area illuminated by a light source, with light travelling from the scanned area to the optical image along a light path, the image scanning module operating at various resolutions and comprising: a charge-coupled device; at least two lenses, mounted at a mutual transverse distance in front of the charge-coupled device and alternatively brought into the light path, such that the optical image of the scanned area is created on the charge-coupled device; at least two mirror groups, alternatively brought into the light path, with each of the lenses mounted behind one of the mirror groups; and a moving device, moving the lenses and the mirror groups simultaneously between transverse positions; wherein for each of the transverse positions, one of the mirror groups, one of the lenses and the charge-coupled device are aligned and the image scanning module operates at one of the various resolutions, with the light path having various lengths for the various resolutions, in a way that the optical image of the scanned area has a nearly constant intensity for the various resolutions and the image scanning module is of compact size.
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patent: 4942425 (1990-07-01), Kamimura et al.
patent: 5260831 (1993-11-01), Suzuki et al.
patent: 5680205 (1997-10-01), Borza
Coles Edward L.
Lee Cheukfan
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