Laser drawing apparatus, laser drawing method, a master for...

Details Laser drawing apparatus, laser drawing method, a master for... Laser drawing apparatus, laser drawing method, a master for...

2006-04-11

2006-04-11

Edun, Muhammad (Department: 2655)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S047100, C369S044140

Reexamination Certificate

active

07027381

ABSTRACT:
The laser patterning device of this invention comprises a turntable on which is placed a processed member, and which rotates the member; a linear slider; a laser serving as a light source; an optical system, mounted on the slider, which condenses the laser light to form a laser spot on a substrate; and an optical modulator which changes the optical intensity of the laser spot. By performing laser patterning of a prescribed pattern on the processed member while moving the optical system mounted on the slider, while rotating the processed member by means of the turntable, a pattern having fine gray scales in the depth direction can be drawn with high precision and in a short amount of time.

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Recording of computer-generated holograms on an optical disk master; Toyohiko Yatagai, Jose G. Camacho-Basilio, and Hajime Onda, Applied Optics, vol. 28, No. 6, Mar. 15, 1989.
Communication from Japanese Patent Office regarding counterpart application.

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