Laser machining system with control based on machining state rec

Details Laser machining system with control based on machining state rec Laser machining system with control based on machining state rec

1996-01-17

1997-12-16

Walberg, Teresa J.

Electric heating

Metal heating

By arc

21912174, 21912183, B23K 2602

Patent

active

056981201

ABSTRACT:
A laser machining system having a mirror for transmitting or reflecting laser light providing a sufficient light amount and light generated at a laser radiation point without degrading the laser light quality. A phase difference control mirror, which has a dielectric multilayer film as an optical film which allows light of a wavelength other than laser light to pass therethrough and which reflects the laser light almost 100% while the phase difference between S and P polarization components of the laser light before the laser light is reflected is substantially maintained, is provided in place of an optical path mirror located in an optical transmission line, whereby light of a wavelength other than that of the laser light can be extracted from the light generated at a laser radiation point on a workpiece during laser machining, and the extracted light is detected by an optical sensor.

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patent: 5041714 (1991-08-01), Funk
patent: 5155328 (1992-10-01), Ikawa
patent: 5500502 (1996-03-01), Horita et al.
patent: 5539180 (1996-07-01), Mori et al.

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