Olympus Optical Company, Ltd.

Techno Polymer Company Limited

Hiroaki Miyazaki

Tatsuya Suzuki

Moriya Katagiri

Yasuo Yamazaki

Takashi Inoue

Kunio Yokoyama

Shunji Matsutani

Hidenori Sakurai

Yoshiyuki Kitahara

Hiroyuki Itoh

Akiteru Kimura

Kazuyuki Iwasa

Toshifumi Nakano

Masahiko Noro

Yuichi Torikoshi

Hideaki Matsuoto

Hitoshi Shirai

Keigo Higaki

Manabu Ikeda

Ikumu Suzuki

Flame retardant thermoplastic resin compositions containing (A) a rubber-reinforced resin produced by graft-polymerizing a monomer component containing an aromatic vinyl compound and a vinyl cyanide compound as main ingredients in the presence of a rubber polymer particles and (B) 90 to 60 parts by weight of an aromatic polycarbonate. Optionally (C) a phosphate compound and (D) a component containing poly-tetrafluoroethylene and a lubricant may be present.

Flame retardant thermoplastic resin composition

An illumination device having a light-emitting tube and a reflector for reflecting rays of light irradiated from the light-emitting tube is designed so that the cross-sectional shape of at least one section of the reflector in a plane perpendicular to the axis direction of the light-emitting tube is different from the cross-sectional shapes of the other sections in the axis direction of the light-emitting tube.

Illumination device

A movement detection and control device has a lens frame holding a lens. The lens frame is movable in a direction of an optical axis of the lens. A revolving cam moves the lens frame in the direction of the optical axis. A driving source drives the cam. A pattern-rotating member having patterns for pulse generation, is rotated by the driving source. A detector detects the patterns, and generates pulse signals in response to driving by the driving source. A control circuit counts the pulse signals, and drives the driving source in a controlled manner to move the lens frame by a predetermined amount. The revolving cam is provided with a light-sealing member for intercepting the detector from generating pulse signals in an area where the cam starts or finishes its movement.

Movement detection and control device

A camera with a lens mount having an imaging lens and a barrier which is disposed on a camera body and which is shiftable between a closed position where the barrier covers a part of the lens mount and the entire front of the imaging lens and an open position where the barrier is clear of the front of the lens mount. When the barrier is at the closed position, the barrier allows the front of the lens mount to be partly exposed. The camera thus constructed achieves a minimum dimension in the width across the camera body including the barrier.

Moveable lens barrier for a camera which reduces camera size

A camera includes a camera body having a photographing mask, a cassette chamber on one side of the photographing mask and a film winding spool on the other side. A motor rotates the winding spool in a film winding direction and a spring pushes the film toward the photographing mask to thereby apply a predetermined load against movement of the film. A roller applies to the film a tensile force which is smaller than the predetermined load on the film winding side to maintain the film flat at the photographing mask.

Camera with apparatus for maintaining film flat during photographing

A camera having a device for feeding a film, includes a driving unit for generating driving force, a first unit to be driven for feeding the film in a first direction, a second unit to be driven for feeding the film in a second direction which is different from the first direction, and a portion to be driven always engaged with the driving unit, a shaft unit being angularly moved by the driving unit, a driving portion always engaged with the first unit to be driven for moving the shaft unit while angularly moving the shaft unit in an axial direction of the shaft unit when the shaft unit is angularly moved by the driving unit, and an engagement portion for being engaged with the second unit to be driven.

Camera

A camera having a device for feeding a film, comprises a driving unit for generating driving force, a first unit to be driven for feeding the film in a first direction, a second unit to be driven for feeding the film in a second direction which is different from the first direction, and a portion to be driven always engaged with the driving unit, a shaft unit being angularly moved by the driving unit, a driving portion always engaged with the first unit to be driven for moving the shaft unit while angularly moving the shaft unit in an axial direction of the shaft unit when the shaft unit is angularly moved by the driving unit, and an engagement portion for being engaged with the second unit to be driven.

A camera capable of changing over the photographing frame size thereof having a photographing frame size changing member disposed in a camera body and capable of moving between a first position at which the photographing frame size changing member partially covers a film exposing opening and a second position at which the changing member does not cover the film exposing opening; and an operation member disposed on a rear cover of the camera for selectively bringing the photographing frame size changing member to the first position or the second position, wherein the changing member and the operation member are non-mechanically connected to each other in a state where the film is interposed between the changing member and the operation member. In another embodiment flexible changing members, being positively driven, are guided from a position behind the film to a position in front of the film exposing opening. Visual and/or audible indicators are provided to alert an operator as to the photographing frame size.

Camera having photographic frame size changing means controlled by an

In a collapsible barrel type camera according to the present invention, when the camera user tries to move a barrier from an opened position to a closed position when a lens barrel is protruding to a photographing position, a barrier clicking portion generates a resistance to the barrier before the barrier makes contact with a side of the lens barrel to urge the user to wait for the closing operation. A barrier switch turns off immediately before the barrier has moved to that position where it receives the resistance, and the lens barrel thereby retracts. Hence, the photographer can fully close the barrier after he or she has confirmed collapse. Further, in this camera, the provision of a complicated locking mechanism is not required between the barrier and the lens barrel. This makes the camera compact.

Collapsible barrel type camera

A picture-format switchable camera having a picture-format setting device for setting a picture format, and a picture-format switching device for switching to the picture format set by the picture-format setting device from another picture format. The picture-format switching device is disposed between the aperture of a camera body and the light-sensitive surface of a film.

Picture-format switchable camera

A camera having a photographing mask, a cassette chamber on one side of the photographing mask and a film winding spool on the other side includes: a motor for rotating the winding spool in a film winding direction; a spring disposed between the cassette chamber and the photographing mask, the spring having a first spring unit for pushing a film cassette, toward an inner wall of the cassette chamber to thereby position the cassette, and a second spring unit for pushing the film, drawn from the film cassette, toward the photographing mask to thereby apply a predetermined load against movement of the film; and a device for applying to the film a tensile force which is smaller than the predetermined load on the film winding side. Thus, it is possible to dispense with an independent pressure plate.

A camera includes a motor, a planet gear mechanism having a planet gear to be revolved or rotated by the motor, a film wind mechanism provided on a revolution orbit of the planet gear and meshed with and driven by the planet gear upon forward rotation of the motor to perform film winding, a film rewind mechanism provided on the revolution orbit of the planet gear and meshed with and driven by the planet gear upon reverse rotation of the motor to perform film rewinding, a focal point switching mechanism provided on the revolution orbit of the planet gear and meshed with and driven by the planet gear upon reverse rotation of the motor to switch a focal length of a photographic lens, and a selecting mechanism for selectively causing the planet gear to mesh with the film rewind mechanism or the focal point switching mechanism upon reverse rotation of the motor.

Camera with focal point switching mechanism

A camera with a built-in zoom lens includes at least first and second lens groups, a zoom frame for moving these lens groups along their optical axis during a zooming operation, a first lens holding frame carrying the first lens group and movable together with the zoom frame, a second lens holding frame carrying the second lens group and movable together with the zoom frame, a rocking arm disposed between the zoom frame and the second lens holding frame, rockingly supported on a camera body and having a first abutment which bears against the zoom frame and a second abutment which bears against the second lens holding frame, and a resilient biasing element for urging the second lens holding frame towards the zoom frame side; in addition to the above biasing element is a lock member for locking the second lens holding frame during a macro operation.

Growing community of inventors

Tsukui, Japan

Hiroaki Miyazaki