Sanyo Electric Co., Ltd.

Mitsuhiko Uchida

Shingo Matsuzaki

Noboru Tajiri

Shunichi Morimoto

Provided is a compact-type objective lens (OBL) holder and the like provided with a bobbin making it possible to appropriately wind a coil therearound. An OBL holder of the present invention includes: a main surface portion provided with a fixing part on which an objective lens is fixed; and a first side-wall portion and a second side-wall portion provided with bobbins around which tracking coils for driving the OBL holder itself by using a magnetic effect are wound. Further, in the present invention, each bobbin includes a tubular portion and a through-hole penetrating the tubular portion in a thickness direction thereof. Thus, an adhesive can be supplied to the tracking coil through the through-hole.

Objective lens holder, objective lens driving device using the same, optical pickup device, and method for manufacturing objective lens driving device

Provided are an objective lens holder and the like which prevent a wire formed into tracking coils from being loosened. Tracking coils are respectively attached to bobbins provided to sidewalls of an OBL lens holder. In addition, a conducting wire hook portion is formed by projecting a part of a sidewall portion near one of the bobbins, and a conducting wire is hooked round this conducting wire hook portion. Similarly, another conducting wire hook portion is provided to a sidewall portion near another one of the bobbins, and the conducting wire formed into the corresponding tracking coil is hooked round this conducting wire hook portion. This prevents the conducting wire from being loosened.

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Gunma, Japan

Mitsuhiko Uchida