Optical disc cutting apparatus and method for manufacturing...

Details Optical disc cutting apparatus and method for manufacturing... Optical disc cutting apparatus and method for manufacturing...

2007-02-20

2007-02-20

Huber, Paul W. (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S124040

Reexamination Certificate

active

10264592

ABSTRACT:
An optical disc cutting apparatus capable of suppressing an unnecessary deflection component and unnecessary light intensity variation component and manufacturing a optical disc suitable for a high definition, high precision and high density optical disc. The optical disc cutting apparatus includes a light beam controller including at least one of an optical modulator for controlling the light intensity of light beam emitted from a laser beam source and an optical deflector for controlling the deflection amount of the light beam in the radial direction on an optical disc original master, a deflection error detector for detecting a deflection error in the radial direction included in the light beams controlled by the light beam controller, a second optical deflector, which is disposed between the light beam controller and the deflection error detector, for deflecting the light beams in the radial direction, and a feedback controller for feeding back a feedback signal using the deflection error in the radial direction to the second optical deflector.

REFERENCES:
patent: 4535431 (1985-08-01), Bricot et al.
patent: 5478701 (1995-12-01), Jung
patent: 5809006 (1998-09-01), Davis et al.
patent: 6580681 (2003-06-01), Kashiwagi
patent: 10-261245 (1998-09-01), None
patent: 11-288531 (1999-10-01), None

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