Olympus Corporation

Olympus Imaging Corporation

Olympus Optical Company, Ltd.

Naoki Matsumoto

Toshifumi Nakano

Hitoshi Yoshida

Tsuyoshi Hirabayashi

Moriya Katagiri

Tatsuo Takanashi

Satoru Yasutomi

Hidenobu Mochinushi

Setsuya Kataoka

Ikko Mori

Akira Futami

Yasunari Shimazaki

Katsuhisa Sakaguchi

Kyoji Murayama

Nobuyuki Tanaka

Tetsumi Ichikawa

Kosaku Nishio

Tsuyoshi Kawai

A lens barrel of the invention is configured with a first barrel member, a second barrel member which rotates around an outer periphery of the first barrel member and which has a through hole between an outer peripheral surface and an inner peripheral surface, and a moisture permeable member provided so as to cover the through hole of the second barrel member.

Lens barrel

A switch mechanism usable underwater including a cover serving as an exterior member, a shaft member displaceable in a longitudinal direction and fitted into a shaft hole having substantially the same cross-sectional area provided in the cover, an O-ring maintaining a water-tight sliding seal between the shaft member and the shaft hole, and a lever member movable about an axis for moving the shaft member by application of a pressing force applied to the lever member in a first direction against a force of a bias member, the pressing force being applied at a first point which is a first distance from said axis, the lever member engaging the shaft at a second point a second distance from said axis which is less than said first distance to move the lever member in a second direction opposite said first direction when the pressing force is removed.

Switch mechanism usable underwater

A camera having a barrier according to the present invention includes a barrier unit in a space between a front main body and a front metal cover serving as an exterior member. Rotation of a barrier driving motor is transmitted to a rotary shaft member passing through the front main body, thereby allowing opening/closing actions of the lens barrier between a protection position for a photographing lens and a lens-barrier retracted position. The front main body is sealed waterproof by an O-ring provided to the outer circumferential surface of the rotary shaft member. With the lens barrel of the camera, rotation of a rotary moving frame is effectively transmitted to a cam frame through a cam follower fit to a linear-action groove, using a circumferential groove and the linear-action groove of a bayonet mechanism.

Camera having barrier

A camera having a lens barrel housed therein includes a reflection optical member for reflecting a light beam incident along a first optical axis (O) from a subject so as to reflect the light beam toward a second optical axis (O) intersecting the first optical axis; a light-quantity adjusting member for adjusting the quantity of incident light from the subject; and a drive source for displacing the light-quantity adjusting member, in which by displacing the light-quantity adjusting member, the quantity of the incident light from the subject can be adjusted, and the light-quantity adjusting member is displaced in a direction substantially perpendicular to an optical axial plane inclusive of the first optical axis and the second optical axis so as to adjust the light-quantity.

Camera

The present invention provides a switch mechanism usable underwater including a rear cover serving as an exterior member, two shaft members being displaceable in a shaft direction and fitting into two shaft holes having the same cross-sectional area provided in the rear cover, an O-ring watertightly maintaining the shaft member and the shaft hole, and a lever member being engaged with the two shaft members in a manner to be capable of pressing-down or pulling-up the shaft member, and being configured to balance water pressure applied to one shaft member with that applied to the other shaft member.

A camera is provided which includes a camera main body, a first cover covering one side of the camera main body, a second cover covering the other side of the camera main body, an appearance surface formed on an exterior of the camera main body and positioned between the first and second covers when the camera main body is held between the first and second covers to produce an appearance of the camera, and an operation member arranged on the appearance surface.

Camera having operation member

In a camara exterior part according to the present invention, a front mold member having in one piece a reinforcing portion for preventing deformation is formed using a resin by injection molding. The front mold member is fixed to the inner surface of a front cover made of a metal by adhesion. After the fixing, the reinforcing portion is cut and removed from the front mold member. According to the present invention, high-accurate assembly can be easily realized with a simple arrangement.

Growing community of inventors

Hachioji, Japan

Naoki Matsumoto