Optical: systems and elements – Lens – With support
Reexamination Certificate
2006-07-11
2008-11-25
Martinez, Joseph (Department: 2873)
Optical: systems and elements
Lens
With support
C359S824000, C369S044140
Reexamination Certificate
active
07457057
ABSTRACT:
An optical disk apparatus that includes: a disk drive device having a guide shaft secured to a chassis and an optical pickup which is rotatably attached to the guide shaft and moves along the guide shaft. The optical pickup comprises a lens holder holding an objective lens for emitting a light beam to be projected onto an optical disk and having a sliding hole, a shaft passing through the sliding hole, a focus coil wound around an outer wall of the sliding hole, and a hexagonal magnetic plate fit over the outer wall of the sliding hole so as to be adjacent to the focus coil. One side of the hexagonal magnetic plate is bent toward the focus coil so that the magnetic plate is inclined with respect to a plane having a normal line parallel to a sliding direction of the lens holder.
REFERENCES:
patent: 2004/0052170 (2004-03-01), Ikeda et al.
patent: 2004-164732 (2004-06-01), None
patent: 2004-220769 (2004-08-01), None
Patent Abstracts of Japan, Publication No. 2004-220769, Publication Date: Aug. 5, 2004, 2 pages.
Patent Abstracts of Japan, Publication No. 2004-164732, Publication date: Jun. 10, 2004, 2 pages.
Funai Electric Co. Ltd.
Martinez Joseph
Osha & Liang LLP
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