Mitsumi Electric Company Ltd.

Renesas Electronics Corporation

Japan Atomic Energy Agency

Atsushi Kikuchi

Tomohiko Osaka

Ichiro Hayashi

Minoru Katagiri

Keiichi Sato

Takashi Ishizawa

Tomoo Nakayama

Yoshihiro Kimura

Atsushi Kirii

Yoshiko Kasama

Yukihiro Takimoto

Tomoaki Takeuchi

Hirokazu Furuse

Eiichi Fujikura

Noriaki Hirota

Hiroko Nakano

An optical actuator is an optical actuator configured to move an optical element by a driving part, and includes a movable-side member configured to hold the optical element, a fixed-side member configured to support the movable-side member such that the movable-side member is movable, and a cushioning member disposed on the movable-side member, in which the cushioning member includes a first cushioning surface and a second cushioning surface that face the fixed-side member at respective different distances.

Optical actuator, camera module, and camera-mounted device

This lens driving device is configured separately from a lens unit including a liquid lens, and is provided with: a fixed part; a movable part; a support part that supports the movable part with respect to the fixed part; a driving unit that is formed from a voice coil motor comprising a coil and a magnet and that moves the movable part in an optical axis direction with respect to the fixed part; and a lens deformation unit that is connected to the movable part and that applies, in association with the movement of the movable part, a force to the liquid lens in the optical axis direction. The movable part has a plurality of movable units, and the driving unit drives the movable units independently so as to change the curvature of the liquid lens or to change the optical axis of the liquid lens.

Lens driving device, camera module, and camera-mounted apparatus

A process of producing a fine-grained austenitic stainless steel, the process comprising a step of subjecting a fine-grained austenitic stainless steel comprising: C: 0.15 wt % or less, Si: 1.00 wt % or less, Mn: 2.0 wt % or less, Ni: 6.0 to 14.0 wt %, Cr: 16.0 to 22.0 wt %, and Mo: 3.0 wt % or less, with the balance being Fe and inevitable impurities, and having an average grain size of 10 &#x3bc;m or lower, to an annealing treatment at a temperature from 600&#xb0; C. to 700&#xb0; C. for 48 hours or longer.

Production process of fine-grained austenitic stainless steel

Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. An autofocus movable part includes a lens holder adapted to hold a lens part and an auto-focusing coil part, an autofocus fixing part includes a magnet holder adapted to hold an auto-focusing magnet part, and a shake-correcting fixing part includes a base to which a shake-correcting coil part is disposed. At least one of the lens holder, magnet holder, and base is formed from a molding material consisting of polyarylate (PAR) or a PAR alloy which is a mixture of multiple resin materials including polyarylate.

Lens driving device, camera module, and camera-mounted device

Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. A shake-correcting fixing part includes a coil board consisting of a multilayer printed wiring board in which multiple unit layers consisting of a conductor layer and an insulating layer are stacked on one another, and a base on which the coil board is placed. A shake-correcting coil part, an external terminal, and a conductor pattern including a power-supply line configured to connect the external terminal to the shake-correcting coil part are integrally formed in the coil board.

A lens driving device includes an auto-focusing driving part that includes an auto-focusing coil and driving magnets, and an optical image stabilization driving part that includes an optical image stabilization coil disposed so as to be spaced apart from the driving magnets in an optical-axis direction and the driving magnets. An autofocus fixing part includes a magnet holder to which the driving magnets are fixed by adhesion, and adhesion surfaces of the magnet holder to which the driving magnets adhere are parallel to the optical-axis direction, and first end portions of the adhesion surfaces facing an optical image stabilization fixing part in the optical-axis direction are opened. Each adhesion surface includes a recessed portion that extends in the optical-axis direction toward a second end portion, which is opposite to the first end portion, from a portion positioned closer to an inside than the first end portion.

A method of manufacturing a semiconductor device includes a process of removing, by dry etching, an insulating layer which is formed on the top surface of a Ni-containing silicide layer to thereby at least partially expose the Ni-containing silicide layer; and a process of cleaning the exposed portion of the Ni-containing silicide layer using reduced water having a reductive function.

Growing community of inventors

Tokyo, Japan

Atsushi Kikuchi