Electric heating – Metal heating – By arc
Patent
1993-03-15
1995-09-12
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
21912174, B23K 2604
Patent
active
054498821
ABSTRACT:
A mirror-based laser processing system, e.g., for laser welding, provided with manual control of movements of a laser welding spot W on an object O being treated. The system includes a laser source (10) which generates a laser beam capable of treating the object (O), a mirror-based micromanipulator (14) which consists of a concave mirror (18) and a convex mirror (16) facing each other, and a laser beam splitter (20) which is located on the path of the laser beam reflected from concave mirror (18). The object is located in a focusing position of the laser beam reflected from the laser beam splitter (20). The system has a sensor head (32) for controlling the positions and temperature of the welding spot W. The sensor head is provided with a laser unpenetrated protective window (34), a neutral-density filter (36) which attenuates the infrared scattering light reflected from object O being treated, an infrared narrow-band filter 38 which passes only thermal components of the scattered infrared light, and photodetectors (40) and (42), which convert the intensity of the received light into electrical signals which carry information about the spatial temperature distribution in the vicinity of welding spot W.
REFERENCES:
patent: 4518232 (1985-05-01), Dagenais
patent: 4655592 (1987-04-01), Allemand
patent: 4749840 (1988-06-01), Piwczyk
patent: 4761534 (1988-08-01), Foulkes
patent: 4801352 (1989-01-01), Piwczyk
patent: 4822975 (1989-04-01), Torigoe
patent: 5382770 (1995-01-01), Black et al.
Black Michael
Kupershmidt Vladimir
Evans Geoffrey S.
Reliant Laser Corporation
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