Laser machining device wherein a position reference laser beam i

Details Laser machining device wherein a position reference laser beam i Laser machining device wherein a position reference laser beam i

1991-06-21

1993-03-02

Albritton, C. L.

Electric heating

Metal heating

By arc

21912183, B23K 2600

Patent

active

051911876

ABSTRACT:
A laser machining device comprises a position reference laser beam source (16) in addition to a machining laser beam source (11). A galvanometer scanner (13) has two reflecting surfaces, one for directing a machining laser beam to an object (14) as a machining beam spot and the other for directing a position reference laser beam as a position reference beam spot to a position reference pattern displayed on a liquid crystal display panel (18). The machining beam spot scans a surface of the object to treat the surface according to a machining pattern, to which the position reference pattern is transferred. When a common table (15) is used, transfer is preferably carried out in a ratio of one to one. It is possible to make an additional table carry the panel separately from the galvanometer and the object. In either event, the machining laser beam can have a higher power than the position reference laser beam.

REFERENCES:
patent: 4734558 (1988-03-01), Nakano et al.
patent: 4758848 (1988-07-01), Nakano
patent: 4818835 (1989-04-01), Kuwabara et al.
patent: 4920364 (1990-04-01), Andrews et al.
Applied Optics, vol. 18, No. 4, Feb. 15, 1979, pp. 496-500, R. C. Oehrle "Galvanometer beam-scanning system for laser fiber drawing".

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