Kabushiki Kaisha Toshiba

Kabushiki Kasiha Toshiba

Tomohiro Murayama

Hiroshi Kawakami

Tetsuo Suzuki

Kazuhiko Mori

Isao Kishimoto

Hiroshi Shinozuka

Satoshi Sumida

Taizo Tateishi

Hiroyuki Hata

Akira Morimoto

Katsuko Ozawa

Kazuhisa Gotoh

Tomomi Wakabayashi

Momoyo Tokuda

A method for manufacturing an objective lens driving apparatus comprising a lens holder which holds an objective lens and is driven in a focusing direction and a tracking direction with reference to the optical disk, at least two wires having first ends secured to the lens holder and controlling posture of the lens holder, and a wire holder to which second ends of the wires are fixed, the method comprising the steps of preparing a first integrally molded member including the lens holder and the wire holder which are connected together by a holder connecting frame to be removed after assembly, preparing a second integrally molded member including the wires which are suspended from a wire holding frame to be removed after assembly, positioning the second integrally molded member relative to the first integrally molded member such that the first ends of the wires are connected to the lens holder and the second ends of the wires are connected to the wire holder, and removing the wire holding frame and the holder connecting frame.

Apparatus and method for driving objective lens

The present invention relates to an optical characteristics switching mechanism for switching optical characteristics of an optical system by selectively locating an optical element in an optical path of the optical system. The optical characteristics switching mechanism of the present invention comprises optical characteristics switching element for selectively arranging a holder holding the optical element at either of a first position at which the optical element exists in the optical path and a second position at which the optical element is out of the optical path, by rotating the holder with use of a magnetic force.

Optical characteristics switching mechanism optical head and optical

An injection molding die comprising a lower die and an upper die for manufacturing an objective lens drive unit, comprises a plurality of gates formed on the lower die in position perpendiculars to the direction of opening and closing the lower die and the upper die for allowing resin to flow into the cavity formed of the lower die and the upper die and a plurality of runners each with an end thereof connected to the corresponding gate and the other end thereof formed on the upper die, wherein each of the runners including the end-to-end portion thereof is formed inclined toward the upper die.

Optical pickup apparatus and method of manufacture thereof, optical disk

A plurality of distribution type controllers are provided for corresponding portions of an object to be controlled. One of the controllers, which has the lowest operation rate, executes control items relating to the entire object and the portions of the object, and the other controllers execute control items relating only to the portions of the object.

Distribution control apparatus

Growing community of inventors

Yokohama, Japan

Tomohiro Murayama