Nikon Corporation

Nippon Kogaku K.k.

Naoki Tomino

Kazuyuki Kazami

Tetsuro Goto

Tsutomu Wakabayashi

Hideya Inoue

Koichi Daitoku

Akira Ezawa

Toshio Sosa

Yoshio Matsuzawa

Masaaki Yanagisawa

Yoshiharu Shiokama

Makoto Kimura

Masaaki Tsukamoto

Kenichi Magariyama

Akira Ogasawara

Kimio Uematsu

Yuji Ohkubo

Osamu Ikeda

Kazyuki Kazami

Kazuto Otsuka

An information recording/reproduction apparatus for a camera includes a magnetic reading unit which can contact a magnetic recording medium arranged in advance on a film, and a drive control unit for, when the magnetic reading unit reaches a predetermined position with respect to the film, bringing the magnetic reading unit into contact with the magnetic recording medium.

Information recording/reproduction apparatus for camera

A camera is provided in which when a film unit exposed up to a midroll frame in one wind mode is reloaded, the exposure of the film unit can be continued in another wind mode without causing double exposure. The camera discriminates whether the next frame adjacent to an exposed frame which has just been exposed is an unexposed frame or an exposed frame. If the next frame is an exposed frame, the operation of rewinding film into a cartridge is performed to thereby render further photographing impossible. Thereby, when a film unit exposed up to a midroll frame in one wind mode (e.g. the ordinary wind mode) is loaded into the camera, the continuation of the exposure of the film unit can be effected in the other wind mode (e.g. the prewind mode) without causing double exposure. A camera is further provided which utilizes two or more recording areas prepared in a data recording portion provided to a film leader portion, and in which data is recorded on a recording area different from that in a previous recording operation upon each rewind operation, thus eliminating the problem caused by overwritten data.

Camera reading information applied to a film unit

There is disclosed a device for preventing the camera shaking, provided with a light metering circuit for receiving the light from an object and releasing luminance signal corresponding to the luminance of the object; a detection circuit for detecting the camera shaking at phototaking operation; a counter for counting the number of phototaking operations identified as involving camera shaking and the number of phototaking operations identified as not involving camera shaking; a discriminator for comparing the above-mentioned numbers and discriminating the relation of the numbers; and an exposure control circuit for varying the shutter time, calculated from the luminance signal, to a shorter shutter time if the count of phototaking operations identified, by the discriminator, as involving camera shaking is larger than the count of phototaking operations identified as not involving camera shaking.

Camera shaking prevention device and camera shaking warning device

The camera of the present invention includes means for recording and reproducing information regarding the photographed frames of film, means for applying onto the cartridge of a film unit discriminative information indicative of whether the reading-out of the information regarding photographed frames is necessary, means for detecting the discriminative information, and means for controlling whether the reading out of the information regarding photographed frames should be effected in conformity with the result of the detection. Thus, when the camera is loaded with a film unit which does not require the reading-out of the information regarding photographed frames, like a new film unit which has never been loaded into a camera, the operation of reading out the information regarding photographed frames is saved.

A camera capable of setting trimming magnification is provided with:

Camera and printing apparatus with variable trimming magnification

A camera comprising a light press timer for maintaining a power source until a predetermined power source maintaining time elapses even if the power source is switched on by the half depression operation of a release button and the half depression operation is released, a time counting device for starting time counting with photographing, a memory device for finding the photographing interval time from the preceding photographing till the current photographing from the result of the time counting by the time counting device each time photographing is effected and memorizing it, and a determining device for determining a predetermined power source maintaining time from the memorized photographing interval time.

Camera having a light press timer

There is disclosed a camera equipped with a mode setting device which counts the number of uses of each of plural modes, and sets the most frequently used mode as the initial mode. At the phototaking operation, the camera is set at such most frequently used mode. The above-mentioned plural modes can be plural exposure control modes, focal length control modes, photographing magnification setting modes, self-timer modes, automatic exposure value correcting modes, or alarm modes.

Initial mode setting device for camera

A control apparatus for camera, comprises driving means comprising an electric motor, a circuit means for controlling the motor and a rotary shaft rotationally driven by the motor. The rotation of the rotary shaft includes a first rotation in a direction started in response to a picture-taking starting operation, a second rotation in a second direction started in response to the completion of an exposure and a third rotation in the second direction subsequent to the second rotation. The apparatus further includes a shutter-charging member movable from an initial position to a charge position in order to charge a shutter-driving mechanism; a mirror-operating member disposed to move a movable mirror between a position for through-finder observation and a position for exposure; a diaphragm-operating means for moving a diaphragm of a photographing lens between an open aperture position and a stop-down aperture position; a film feed member for taking up a film stepwise frame by frame; and an interlocking means for operationally connecting the shutter-charging member, mirror-operating member, diaphragm-operating member and film feed member with the rotary shaft and disposed to move the diaphragm to the stop-down position, the shutter-charging member to the initial position and the movable mirror to the exposure position during the first rotation of the rotary shaft, and, during the second rotation, to move the diaphragm to the open aperture position, the shutter-charging member to the charge position and the mirror to the through-finder observation position, and further, during the third rotation to take up the film.

Control apparatus for camera

An electric connector for camera is adapted to form an electric connection between an electric device within a taking lens barrel and an electric device within a finder system of the camera. The connector is disposed between the mount for mounting the lens barrel and the holder for mounting the finder system. The connector comprises first and second contacts. The first contact is connectable to the electric device in the lens barrel when the latter is mounted. The second contact is in electric connection with the first contact and connectable to the electric device in the finder system when the latter is mounted.

Electric connector for camera

A connector electrically connects, an electric circuit in an interchangeable lens with an electric circuit in a camera body. The connector includes plural contacts provided on the interchangeable lens and the corresponding plural contacts provided on the camera body. Power supplying contacts in the plural contacts on the camera body are activated only after the interchangeable lens has been completely or mounted on the camera body.

Device for electrically connecting lens and camera

A device for electrically connecting a lens barrel and a camera body includes a connector provided integrally with the fixed cylinder of the lens barrel along the cylindrical surface of the fixed cylinder. The connector has a movable contact resiliently displaceable in the diametral direction of the cylinder. The movable contact is urged against a contact piece provided on the camera body upon completion of the mounting of the lens barrel to the camera body. The camera body is provided with an inclined surface for displacing the movable contact in the diametral direction against the resilient force during the mounting operation of the lens barrel to the camera body.

Device for coupling a lens barrel and a camera body

A device capable of containing at least one planar battery having a positive electrode and a negative electrode and capable of supplying a power to a circuit when the battery has been completely contained includes a plurality of terminals for contacting the positive electrode and the negative electrode, respectively, of the battery when completely contained, means for holding each of the terminals, the holding means holding at least one of the terminals movably between a first position and a second position and wherein the movable terminal, when in the first position, contacts neither of the positive electrode and the negative electrode and, when in the second position, can contact one of the electrodes, and means for moving the movable terminal to the second position in response to the containment of the battery.

Container device for planar battery

In a camera of the type which is provided with a focal plane shutter having a group of opening blades and a group of closing blades and a light receiving element for metering the light transmitted through a photographing lens, the improvement comprises an additional light shielding member provided in the path of photographing light on the front side of the focal plane shutter relative to the transmitted light. The light shielding member is so disposed as to be able to reflect the photographing light toward the light receiving element. Retracting means brings the light shielding member to a position out of the photographing light path prior to exposure.

Camera with focal plane shutter

A camera provided with first connecting means capable of being selectively coupled to second connecting means of a flash bulb unit and third connecting means of an electronic flash unit and having a first terminal connectable in common to a synchronizing terminal in the second connecting means and a tuning shutter time setting signal terminal in the third connecting means, a second terminal connected to a synchronizing terminal in the third connecting means, and a third terminal connected in common to ground terminals in the second and third connecting means includes a tuning shutter time setting circuit having its input terminal connected to the first terminal, and a protective circuit for the tuning shutter time setting circuit.

Growing community of inventors

Tokyo, Japan

Naoki Tomino