Exposure apparatus for optical disc

Details Exposure apparatus for optical disc Exposure apparatus for optical disc

2006-06-06

2006-06-06

Nguyen, Hoa T. (Department: 2656)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S047440, C369S044320, C369S053420

Reexamination Certificate

active

07057992

ABSTRACT:
An exposure apparatus for an optical disc used for eliminating the vibrations in the propagating direction when a rotation mechanism rotates. The slider controller40and the spindle controller41of the exposure apparatus1are activated, and the then the optical disc begins to be rotated by an AC synchronized motor. Through a condensing device9,laser beams emitted form the laser source6are irradiated on the optical disc for exposure. At this time, the optical disc is eccentrically chucked on the rotation mechanism, resulting a rotational vibration of the whole rotation mechanism. A measurer17is used for detecting a propagating component of the rotational vibration, and a vibrator controller42controls the vibrator20as the output of the measurer17approaches zero. Therefore, the vibration in the propagating direction of the base2is cancelled, and the propagation accuracy is increased and the exposure quality is enhanced.

REFERENCES:
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patent: 0244005 (1987-11-01), None
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patent: 10261245 (1998-09-01), None
patent: 10293928 (1998-11-01), None
patent: 385438 (2000-03-01), None

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