Optical pickup actuator including a movable portion having high stiffness
AssigneeMitsumi Electric Co., Ltd.
InventorKen?apos; ichi Hori
Life of this patent
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Abstract
In an optical pickup actuator comprising a movable portion (10) including a lens holder (12) for holding an object lens (11) and a damper base (22) for supporting the movable portion through a plurality of suspension wires (34) extending from both sides thereof to allow the movable portion to shift up and down and right and left, the movable portion (10) is made of a liquid crystal polymer (40) which is material having a nature where a surface layer (41) thereof is harder than the inside (42) thereof on injection molding. The movable portion has a surface shape (a wavelike surface shape) where a surface area thereof is larger than that of a flat surface.
Claims6
An optical pickup actuator comprises a movable portion including a lens holder for holding an object lens and a damper base for supporting said movable portion through a plurality of suspension wires to allow said movable portion to shift up and down and right and left, said suspension wires extending from both sides of said movable portion, wherein said movable portion is made of material which has a nature where a surface layer thereof is harder than the inside thereof on injection molding and said movable portion has a surface shape where a surface area thereof is larger than that of a flat surface.
A molding product molded by using material which has a nature where a surface layer thereof is harder than the inside thereof on injection molding, wherein said molding product has a surface shape where a surface area thereof is larger than that of a flat surface.
Dependencies are inferred from the claim text.