Method and apparatus for keeping a document in focus during noncontact scanning

Method and apparatus for keeping a document in focus during noncontact scanning

This invention relates to a scanning device for scanning a document such as a photograph using an image sensor device that uses optics that may have a narrow depth of focus, the scanning avoiding contact of the document by the image sensor device during scanning. That is, the focal volume of the sen...

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Hauptverfasser: LARKIN ERIC, SHAUGHNESSY HELEN, CHANG ANA, RINALDIS DAVID
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator LARKIN ERIC
SHAUGHNESSY HELEN
CHANG ANA
RINALDIS DAVID
description This invention relates to a scanning device for scanning a document such as a photograph using an image sensor device that uses optics that may have a narrow depth of focus, the scanning avoiding contact of the document by the image sensor device during scanning. That is, the focal volume of the sensor device is at a distance from the image sensor device. The scanning device includes a positioning mechanism that maintains the front surface of the document in the focal volume during scanning.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title Method and apparatus for keeping a document in focus during noncontact scanning
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