Electric heating – Metal heating – By arc
Patent
1988-01-14
1989-02-07
Albritton, C. L.
Electric heating
Metal heating
By arc
21912174, 346 76L, B23K 2600
Patent
active
048033367
ABSTRACT:
A high speed laser marking system (32) is disclosed which includes a laser (21) for generating a pulsed beam (22) of electromagnetic energy and reflective symbol generating means (41, 42) for forming the image of a symbol on a target (30). The symbol generating means includes an element (42) for reflecting the beam to form the image of the symbol on the target (30). The reflective element (42) includes mirors for reflecting a plurality of symbols. In a specific embodiment, the invention includes a wheel (41) on which a plurality of mirrored elements (42) are disposed. The wheel (41) is driven under control of a conventional control system to provide for the irradiation of a selected symbol. In a more specific embodiment, the invention includes an ellipsoidal mirror (45) to direct the reflected radiation to the target. A further more specific embodiment of the invention includes reflective holographic elements designed to reflect images of selected symbols to the target.
REFERENCES:
patent: 3617702 (1971-11-01), Flournoy
patent: 3739088 (1973-06-01), Landsman
patent: 4156124 (1979-05-01), Macken et al.
patent: 4430548 (1984-02-01), Macken
patent: 4480169 (1984-10-01), Macken
patent: 4568982 (1986-02-01), Follett
Albritton C. L.
Duraiswamy V. D.
Hughes Aircraft Company
Karambelas A. W.
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