Optics: measuring and testing – Shape or surface configuration – Triangulation
Reexamination Certificate
2005-10-31
2008-07-15
Lauchman, L. G. (Department: 2877)
Optics: measuring and testing
Shape or surface configuration
Triangulation
C356S396000
Reexamination Certificate
active
07400414
ABSTRACT:
A hand-size structured-light three-dimensional metrology imaging system and method. Laser illumination stripes are scanned across a workpiece surface for obtaining z-height and x-coordinate information. A Scheimpflug configuration is used. Utilizing this configuration, a laser illumination stripe across a raised workpiece portion will be shown in a contour image at the image sensor in a focused manner, such that the offsets along the contour image line due to the raised portions of the workpiece surface can be accurately converted to a z-height measurement. The y-axis positions associated with each of the contour images, used for reassembling the information from the contour images into a surface map for the workpiece, may be determined without the need for a position sensor, by including a reference object in the contour images.
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Gladnick Paul
Nahum Michael
Tobiason Joseph Daniel
Christensen O'Connor Johnson & Kindness PLLC
Lauchman L. G.
Mitutoyo Corporation
Slomski Rebecca C
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