System for optically adjusting an imaging head
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United States of America Patent
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Feb 7, 2012
Grant Date -
Nov 18, 2010
app pub date -
May 15, 2009
filing date -
May 15, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a system for optically adjusting a computer-to-plate (CTP) imaging head which includes an a light source (104), optical fiber (124) for transmitting light emitted from the light source; an imaging lens (204) for focusing light emitted from a distal end of the optical fiber (128) on a substrate; wherein a portion of light striking the substrate is reflected back to the distal end of the optical fiber; a fiber optic coupler (116) in the optical fiber which transmits the reflected light to a light detector (112); wherein the light detector measures intensity of the reflected light; and a control unit configured to adjust the imaging head according to the intensity of the reflected light.
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