Laser texture processing apparatus and method

Details Laser texture processing apparatus and method Laser texture processing apparatus and method

1998-08-12

2000-07-18

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

21912169, 21912175, 21912183, 700166, B23K 2600, G11B 584

Patent

active

06091047&

ABSTRACT:
A laser texture processing apparatus of the present invention for melting a surface of a hard disc 9 and forming a ring-shaped melted trace, including a laser oscillator 1 that is a beam source, an objective lens 8 for condensing a laser beam on a surface of the hard disc 9, and a depolarizer 7 for artificially depolarizing a laser beam which enters a beam path of the laser beam from the laser oscillator 1 to the objective lens 8.

REFERENCES:
patent: 5768076 (1998-06-01), Baumgart et al.
patent: 5951891 (1999-09-01), Barenboim et al.
patent: 5952014 (1999-09-01), Wada et al.

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