Method for photographically recording a cylindrical, especially plate-shaped object
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United States of America Patent
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Issued Date -
Mar 9, 2006
app pub date -
Nov 22, 2003
filing date -
Nov 23, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention relates to a method for the photographic representation of a cylindrical, especially plate-shaped object, having a front surface and an envelope surface, by means of a camera oriented towards the front surface. Said method uses a lens system having a beam path which is embodied in such a way that the envelope surface is represented as an annular surface surrounding the image of the front surface. Preferably, the diameter of the lens system is larger than the width of the workpiece. Alternatively, a mirror in the form of the inner surface of a conical envelope surrounds the object to be photographically represented, the camera being positioned with its lens system essentially on the conical axis. The object is illuminated by means of a ring of transparent material surrounding the object and having a light opening parallel to the cylindrical axis of the object and a light emergence surface which is in the form of a cylindrical envelope or a conical envelope, surrounds the envelope surface, and is essentially oriented towards the envelope surface.
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