Device for cutting material by means of a laser beam

Details Device for cutting material by means of a laser beam Device for cutting material by means of a laser beam

2007-02-13

2007-02-13

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

By arc

C219S121700, C219S121730

Reexamination Certificate

active

11345305

ABSTRACT:
Device for cutting material by a laser beam, which device (1) comprises a laser source (2) for generating a laser beam (3) with an optical axis (10) and a focusing lens (8) for focusing said beam (3), characterized in that between said laser source (2) and said focusing lens (8) are provided a first and a second retardation plate (4and5) and a refraction element in between them, which is provided rotatable and tiltable with respect to said optical axis (10) of the incoming light beam.

REFERENCES:
patent: 4547651 (1985-10-01), Maruyama
patent: 6130403 (2000-10-01), Wakabayashi
patent: 6518543 (2003-02-01), Benz et al.
patent: 2002/0158052 (2002-10-01), Ehrmann et al.
patent: 63-10093 (1988-01-01), None
patent: 4-270091 (1992-09-01), None

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