Laser machining apparatus with controllable mask

Details Laser machining apparatus with controllable mask Laser machining apparatus with controllable mask

1984-05-14

1988-03-29

Leung, Philip H.

Electric heating

Metal heating

By arc

219121LA, 350334, B23K 2600

Patent

active

047345586

ABSTRACT:
A laser machining apparatus is disclosed. The laser machining apparatus includes a marking table, a laser, a first optical system for converting a laser beam emanating from the laser into a parallel beam, a device for generating a transparent optical aperture by controlling an optical material in either an electrical or an optical manner, a device for directing the parallel beam output from the first optical system toward the optical aperture, and a second optical path for focusing the optical aperture on a sample which is located on the marking table.

REFERENCES:
patent: 3292102 (1966-12-01), Byrne
patent: 3440388 (1969-04-01), Otstot et al.
patent: 3971931 (1976-07-01), Jehle
patent: 3975082 (1976-08-01), Winzer
patent: 4013466 (1977-03-01), Klaiber
patent: 4032861 (1977-06-01), Rothrock
patent: 4156124 (1979-05-01), MacKen et al.
patent: 4219721 (1980-08-01), Kamen et al.
patent: 4323317 (1982-04-01), Hasegawa

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