Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-12-18
2007-12-18
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S827000, C029S848000, C029S856000, C029S858000, C264S272110, C264S272140, C720S682000
Reexamination Certificate
active
10854216
ABSTRACT:
An optical pickup apparatus is described which includes a movable unit with an objective lens, a focus servo coil for moving the moveable unit containing the objective lens in the optical-axis direction, and tracking servo coils for moving the moveable unit containing the objective lens in the horizontal directions, and a liquid crystal element disposed for correcting the refractive index. Springs simultaneously provide support for the moveable unit and feed power to the liquid crystal element, the focus servo coil, and the tracking servo coils. A method for making said optical pickup apparatus is described. Two sheets, each having four springs extending across an opening formed by punching, are disposed parallel to each other at a predetermined distance. On these sheets, a fixed unit and a movable unit are formed by insert-molding. Excess portions of the metal sheets are removed, and a through-hole is formed so that connected portions of the wirings, lying side by side, are disconnected. Then, an objective lens, a focus servo coil, tracking servo coils, and a liquid crystal element are mounted on the movable unit.
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Kim et al., “Integrated Micro Optical Flying Head with Lens Positioning Actuator for Small Form Factor Data Storage”, TRANSDUCERS—Solid State Sensors, Actuators and Microsystems, pp. 607-610, Jun. 2003.
Japanese Office Action dated Jun. 21, 2006 for Application No. 2003-164941.
Kananen Ronald P.
Rader & Fishman & Grauer, PLLC
Sony Corporation
Tugbang A. Dexter
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