Konica Corporation

Konishiroku Photo Industry Co., Ltd.

Eastman-Kodak Company

Masami Fujita

Shuri Mizoguchi

Tetsufumi Takaba

Masaru Yamazaki

Michio Yagi

Hiroshi Kibayashi

Koji Watanabe

Seiichi Isoguchi

Osamu Shibazaki

Satoshi Harada

Kiyoaki Hazama

Shizuo Ishii

Hitoshi Ohkubo

Kazuhisa Aratame

Kei Kaneiwa

Yoshinobu Sameshima

Yuichi Atarashi

Edward N Balling

Toshifumi Iijima

Kiyoshi Yamashita

Hiromi Nakanishi

Hideaki Haraga

Kazuhiro Nakanishi

Yoshiharu Takahashi

Hiroshi Yamaguchi

Takao Hosaka

Ken Ishida

Saburo Yoneyama

Kijiro Suzuki

Hirokazu Gunshi

Katsuyuki Koizumi

Kazuyoshi Sugano

Jun Kitahara

Mutsuhito Kichima

Yoshichika Noda

Kijirou Suzuki

Hideaki Ono

Mamoru Kawano

A lens-fitted film unit including a main body; a photographic film, pre-loaded in the main body; an electronic flash unit; a shutter unit; a camera lens; and a diaphragm. In the lens-fitted film unit, a guide number of the electronic flash unit, a T-number determined from the camera lens and the diaphragm and a shutter speed of the shutter unit are determined so that A is not more than 8.5 when A represents an EV value of a reference exposure amount of the lens-fitted film unit under a stroboscopic photographing state minus 1.5; and intensity of a latent image, formed on the photographic film under the condition that a reference reflection panel being placed at a predetermined distance between 2-3 m from the lens-fitted film unit is illuminated by the electronic flash unit without other lights in the stroboscopic photographing state, corresponds to intensity of a latent image obtained under a photographing condition of photographing luminance not more than A&plus;5.0 in EV value.

Lens-fitted film unit with a built-in electronic flash unit and image forming method based on a photographic film exposed by the lens-fitted film unit with a built-in electronic flash unit

A strobe circuit for use in a lens-fitted film unit is composed of a metallic thin plate punched in a circuit pattern; and insulating plate materials covering both obverse and reverse surfaces of the metallinc thin plate; wherein a part of the metallic thin plate is used as a component of the strobe circuit.

Lens-fitted film unit

The single-use camera has a main body in which is housed the film cartridge and around which a cover member is formed. On the main body of the camera is a closure and a spring which are used to close the light-shield cover in the film gate of the cartridge when the cover is opened to remove the film cartridge.

Apparatus for closing a film gate in a film cartridge in a single-use

A single-use camera which is loaded with a film cartridge having a light-shielding cover on a film gate thereof. The single-use camera includes: a cover for covering the film cartridge when the cover is at its closed position, a closing member for closing the light-shielding cover of the film cartridge, a stopper for keeping the cover member at the closed position, and a stopper release for releasing the stopper so as to allow the cover to be open while the light-shielding cover is being closed by the closing member.

Apparatus for preventing opening of a single-use camera until the light

A single-use camera which is loaded with a film cartridge, having a light-shielding cover on a film gate, when the single-use camera is assembled. The camera includes: the film cartridge for accommodating a photographic film; a film-winding knob, capable of rotating, for winding the photographic film; a film detection member for detecting the photographic film at a position outside the film cartridge in the camera; and a mechanism for moving the light-shielding cover to a closed position where the light-shielding cover closes the film gate when the film detection member detects absence of the photographic film at the position.

Film detection member for a single-use camera

A one-time-use camera comprising a film cassette having a light lock pivoted open to permit film movement into the cassette interior and pivoted closed to prevent ambient light from entering the cassette interior and a locking pawl movable into engagement with the light lock when the light lock is closed to secure the light lock closed and movable out of engagement with the light lock when the light lock is closed to permit the light lock to be pivoted open, is characterized in that a driver is moveable in engagement with the light lock to pivot the light lock closed to allow the locking pawl to move into engagement with the light lock and has a void which prevents the driver from moving the locking pawl out of engagement with the light lock, whereby the driver can be pushed against the film cassette to push the film cassette out of the camera without any possibility of the driver being moved in engagement with the light lock to pivot the light lock open.

One-time-use camera has driver for closing film cassette which cannot

A variable focus camera includes a photographing lens constituted by at least two components, and changes the position of a magnification adjusting lens of a finder by a cam barrel of the photographing lens. In this camera, at least two magnification correction cams for extending the components of the photographing lens and having a focal-point correction function are formed on the cam barrel, and a magnification of the photographing lens is caused to coincide with a magnification of the finder by the magnification correction cams.

Variable focus camera

The present invention relates to the improvement of an exposure control device in a camera having a centralized control system that has a built-in control circuit such as a microprocessor etc. and employing a shutter wherein an optimum exposure is obtained in a way that the exposure is given to the film between the gradual opening of the shutter and the closing thereof and the correlation between the shutter apertures and their corresponding lapse of time form a triangle on the graph. If further relates to the improvement of the exposure control means for flash photographing in a camera employing aforesaid shutter and a built-in strobe flash light source.

Camera

The present invention relates to the improvement of an exposure control means in a camera having a centralized control system that has a built-in control circuit such as a microprocessor etc. and employing a shutter wherein an optimum exposure is obtained in a way that the exposure is given to the film between the gradual opening of the shutter and the closing thereof and the correlations between the shutter apertures and their corresponding lapse of time form a triangle on the graph. It further relates to the improvement of the exposure control means for flash photographing in a camera employing aforesaid shutter and a bulit-in strobe flash light source.

A camera wherein a camera body is a rectangular shape and long sideways, a first camera parts accommodating chamber and a second camera parts accommodating chamber are disposed at the both sides of a film advancing unit including a film take-up chamber and a patrone chamber, respectively, and a rear cover is arranged such that its edge is positioned at the boundary between the film advancing unit and the second camera parts accommodating chamber.

The present invention relates to the improvement of a camera which comprises effecting the winding of film and the charging of a shutter with a winding lever which oscillates and having an electric device actuated by shutter release operation, and provides a camera equipped with a safety device in which when the winding lever is retracted and not in use, a release locking device for preventing re-release, after the shutter is released, operates and thereby shutter release under the retracted state is prevented. The camera is also equipped with a safety device in which a circuit to an electric source is opened with the above retraction so as not to actuate the electric device when the camera is not in use.

Camera attached with device for preventing erroneous actions when the

Growing community of inventors

Hino, Japan

Masami Fujita