Laser machining apparatus and method

Details Laser machining apparatus and method Laser machining apparatus and method

1993-09-15

1995-10-31

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

21912162, 372 29, B23K 2600

Patent

active

054632021

ABSTRACT:
A method and apparatus for detecting the machining status of a laser beam machining device, having a multi-mirror resonator for generating a machining beam, which utilizes the secondary light generated by the machining operation and returned from the workpiece surface into the resonator for control of the machining operation. The oscillator and accompanying components, such as beam dividing mirrors and splitters, are operative to separate the secondary light from the laser beam within the resonator and direct the two beams separately to detectors located outside of the resonator. Alternatively, the secondary light and laser beam may be directed to the outside together where they are separated by an integrating sphere for detection.

REFERENCES:
patent: 5059760 (1991-10-01), Iehisa et al.
patent: 5373135 (1994-12-01), Beyer et al.

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