System and method for measuring the quality of an illumination field from a laser line illumination system
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United States of America Patent
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Jul 20, 2004
Issued Date -
N/A
app pub date -
Apr 28, 2003
filing date -
May 14, 2001
priority date (Note) -
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Abstract
A system is disclosed for analyzing an illumination field of a line of laser illumination. The system includes a first movable unit, a second movable unit, and a sensor unit. The first movable unit includes a first opening through which at least a portion of the illumination field may pass. The first movable unit is adapted for movement in a first direction. The sensor unit is adapted to receive illumination and to produce a sensor output signal representative a characteristic of the illumination field. The second movable unit includes a second opening through which at least a portion of the illumination field may pass. The second movable unit is positioned between the first movable unit and the sensor unit and is adapted for movement between at least a first position in which very little or no light from the illumination field may reach the sensor unit, and a second position in which a relatively high amount of light from the illumination field may reach the sensor unit.
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