Device for optically scanning the material being sewn in a sewing machine
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United States of America Patent
Stats
-
Dec 21, 1993
Grant Date -
N/A
app pub date -
Jan 17, 1992
filing date -
Jan 18, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To scan the material being sewn (30, 31) in a sewing machine in an annular area around the presser foot, an annular lens system (25) is provided, which images a circle (33) concentrically surrounding the presser foot in the plane (A) of the material being sewn onto the light inlet ends of a likewise annularly arranged plurality of optical fibers (26). The optical fibers (26) lead, in an individual assignment, to the individual light-receiving elements of a photoelectric sensor line of a line camera, which sensor line can be read cyclically.
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