Variable-shape mirror and optical pickup device therewith

Details Variable-shape mirror and optical pickup device therewith Variable-shape mirror and optical pickup device therewith

2008-06-24

2008-06-24

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Mirror

Including specified control or retention of the shape of a...

C359S226200

Reexamination Certificate

active

07390100

ABSTRACT:
A variable-shape mirror is provided with: a support base; a mirror portion that is disposed to face the support base and that has, on a side thereof facing away from the support base, a mirror surface which is irradiated with a light beam; fixed portions that fix the mirror portion to the support base; and piezoelectric elements that are sandwiched between the support base and the mirror portion and that vary a shape of the mirror surface. Here, the piezoelectric elements are arranged closer to a center of the mirror portion than the fixed portions are.

REFERENCES:
patent: 6049407 (2000-04-01), Melville
patent: A-05-333274 (1993-12-01), None
patent: A-2004-70004 (2004-03-01), None

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