Laser processing apparatus
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United States of America Patent
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-
Mar 20, 2001
Grant Date -
N/A
app pub date -
May 17, 1999
filing date -
May 18, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A laser processing apparatus in which a laser beam oscillatory output from a laser oscillation unit is transmitted through an optical fiber to a remote laser processing site, where the laser processing apparatus has an optical fiber setting apparatus for finding a supply power upper limit for the type of fiber (including a step index (SI) fiber and a graded index (GI) fiber) used and the diameter of the optical fiber, and a laser power supply unit for supplying the laser oscillation unit with an electric power for laser oscillation. A supply power mean value arithmetic apparatus detects the electric power supplied to the laser oscillation unit to figure out a supply power mean value at a certain interval, and the laser power supply unit is interrupted when the supply power mean value exceeds the supply power upper limit.
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