Canon Kabushiki Kaisha

Tomoshi Takigawa

Toshikazu Ichiyanagi

Noritsugu Hirata

Masamichi Toyama

Kazuo Ishikawa

Hidekazu Okajima

Hideto Iwama

Keiichi Sakaguchi

Hiroshi Furukawa

Yoshio Komine

Kiyoshi Takahashi

Mamoru Shimazaki

Mitsutoshi Ogiso

Hiroyuki Takimoto

Sadahiko Tsuji

Tsutomu Osaka

Teiji Hashimoto

Akira Tajima

Yasutsugu Yamada

A system and method is disclosed for forming stereoscopic images. The images are formed through the arrangement of a viewpoint position detection sensor for emitting visible or infrared light to an observer. Reflected light is then detected from the observer, where controls perform follow-up control on a portion of the apparatus by using the signal obtained by the viewpoint position detection sensor. The signal, along with other desired signals, are then properly set to accurately detect the viewpoint position of the observer with a simplified arrangement that easily allows a stereoscopic view region to follow-up at high speeds.

Stereoscopic image display apparatus for detecting viewpoint and forming stereoscopic image while following up viewpoint position

This invention relates to a cinematographic camera and more particularly to a method of controlling operation of the cinematographic camera in accordance with a sequence of instructions programmed to carry out a photographic process. In order to carry out a plurality of operating modes by use of one and the same control circuit, the program is planed to include a plurality of different photographic process program sections along with a selection program for selection of any one of said process program sections.

Cinematographic camera

A motion picture camera is adapted to receive a film magazine containing a roll of sound recordable photographic film. A housing forms a chamber to receive the magazine. A cover opens and closes the chamber. A recording system records sound signals on the film. A setting arrangement engages the recorder system and the film with each other so as to record signals. The setting arrangement is movable into a first position where the film engages the recorder and a second position where the film is disengaged from the recorder so as to be incapable of recording sound signals. A transport device is coupled to the setting arrangement in the first position when the recorder is in the first position. An interconnecting system responds to closure of the cover for moving the setting arrangement from the second position to the first position so that the camera can be set for sound signal recording in response to the closing of the cover.

Cinecamera equipment capable of synchronous sound recording

A motion picture camera provided with a device which ensures satisfactory film exposure by cutting off unnecessary electric power supply to an electrical circuit of an information indicating lamp or the like in response to a camera setting action made to allow the camera to operate even after the operator thereof moves away from the camera.

Motion picture camera

In a diaphragm device for use in an optical instrument such as a camera and having two or more diaphragm blades movable across an imaging path of rays and arranged in axially displaced relation from each other to define a common aperture of variable size, there is provided means formed in a portion of at least one of the diaphragm blades to substantially either eliminate or reduce the axial displacement between the diaphragm blades at a relatively small aperture region, whereby the distribution of light energy is made uniform over the entire area of the image.

Diaphragm device

A self-timer for cinecameras wherein an electric delay circuit is used for detecting a length of time from the release to the commencement of a photographing process which takes place with an electric power having been actually supplied to a film feeding motor. The amount of the rotation made by the film feeding motor from the start of the rotation of the motor is either mechanically or electrically detected. When the detected amount of rotation reaches a preset value corresponding to a number of frames of the film required for self-timer photographing, the motor is stopped to terminate the photographing operation, so that the photographing operation with the self-timer can be accomplished exactly for a preset number of frames.

Self-timer

A motion picture camera is adapted to receive a film magazine containing a roll of sound recordable photographic film. A housing forms a chamber to receive the magazine. A cover opens and closes the chamber. A recording system records sound signals on the film. A setting arrangement engages the recorder system and the film with each other so as to record signals. The setting arrangement is movable into a first position where the film engages the recorder and a second position where the film is disengaged from the recorder so as to be incapable of recording sound signals. A transport device is coupled to the setting arrangement in the first position when the recorder is in the first position. And an interconnecting system responds to closure of the cover for moving the setting arrangement from the second position to the first position so that the camera can be set for sound signal recording in response to the closing of the cover.

A motion picture camera with a release device capable of selective control of rotative movement of the shutter blade in the camera for a normal motion picture sequence and for a single frame slot depending upon the position of a selector therefor. The release device is provided with the single stop lever arranged between the shutter blade and a release member to be pivoted in either of two planes, perpendicular to each other. For a motion picture sequence, as the pivotal movement of the stop lever is limited to only one of the planes, it is retained in operative engagement with the release member so long as the latter is pressed, thus permitting a number of revolutions of the shutter blade in sequence. When the selector is manually switched to the single frame position, a disengage actuator is brought into cooperation with both of the shutter blade and the stop lever in such a manner that just after an exposure aperture is covered by the shutter blade to terminate a single frame exposure, the disengage actuator causes a pivotal movement of the stop lever in the other plane which in turn causes the stop lever to be taken out of the operative engagement with the release member as the stop lever is pivoted in the first-named plane regardless of the fact that release member is pressed. This results in operative engagement of the stop lever with the shutter blade to stop the shutter blade in the exposure aperture closed position.

Release device of motion picture camera

The present invention relates to a motion picture camera which includes a color conversion filter for adapting the tungsten type film to the daylight photography, a manual operation means capable of taking the filter out of the photographic optical path and compensating the sensitivity of the exposure meter device in accordance with the removal of the filter so as to adapt the tungsten type film to the tungsten light photography and a detecting means for removing the filter from the photographic optical path by detecting that the film is of the daylight type so that the tungsten type film as well as the daylight film can be used. The camera is characterized in that it is provided with a holding means which is functionally engaged with the above mentioned detecting means so as to hold the sensitivity of the above mentioned exposure meter device in the state to be used for the daylight photography with the tungsten type film when the detecting means detects that the loaded film is of the daylight type, whereby the operation of the above mentioned manual operation means is nullified when the daylight film is used.

Motion picture camera with a built in color conversion filter

The present invention relates to a self-timer device for a motion picture camera which presents a second motor switch connected in series with the first motor switch to be closed by means of the release means at the time of the camera release, the first timer means including a governer mechanism for actually starting photographing, closing the second motor switch after the elapse of a certain determined time from the automatic photographing setting and the second timer means for stopping the camera release after the elapse of a certain determined time from the actual starting of photographing, so as to open the first motor switch and terminate the photographing. In this manner the first timer means is driven by means of a spring means as a driving source while the second timer means is driven by means of the camera driving motor as driving source and controls the timing of the start and stop of the photographing at the time of the automatic photographing.

Self timer device for motion picture camera

A self-timer device for a motion picture camera of the type having a first motor for driving a film feeding device and a shutter device and a second motor for driving other moving parts such as a zoom lens system. In the device, automatic photographing controlling means which is provided with cam portions for controlling the timing for starting and stopping the camera release operation is operated by the second motor. For photographing, an interlock arrangement between the second motor and the other moving parts which are to be driven by the motor is released while, at the same time, the cam portions of the controlling means are brought into a given relation to a camera release arrangement. This is done in such a manner that the timing for starting and stopping the camera release, i.e. the time intervals between setting for automatic photographing and the actual commencement of it and between the start of photographing and the end of it, is controlled by the cam portions of the controlling means as the controlling means is operated by the second motor to accomplish an automatic photographing operation.

Self-timer device for motion picture camera

An electromagnet release device for a motion picture camera having a drive motor, a shutter control member actuated by the driving force of the motor, a blocking mechanism to selectively block the actuation of the shutter control member, an electromagnet member to control the actuation of the blocking mechanism and a release control switching member with a delay circuit having a charging circuit that delays, for a predetermined time, the timing of the actuation of the motor relative to the timing of the actuation of the electromagnet and a discharging circuit to keep the motor energized for a period after the electromagnet is released to assure the driving of the shutter to the proper stop position. Circuits are also shown for reducing magnet current during continuous operation and for timing the operated period of the electromagnet in single frame operation.

Electromagnetic release device for a motion picture camera

The present invention relates to an automatic exposure adjusting device for a camera or the like, comprising a single photometric mechanism capable of measuring the light corresponding to the light amount entering into a photosensitive material such as film, the first light amount control mechanism driven in accordance with the output of the photometric mechanism for controlling the light amount over the range of the ordinary brightness and the second light amount control mechanism capable of operating in accordance with the output of the photometric mechanism beyond the operation range of the first light amount control mechanism, whereby for the brightness of the object beyond the range of the ordinary brightness the second light amount control mechanism is automatically operated in accordance with the output of the photometric mechanism so as to give a proper exposure.

Automatic exposure adjusting device

The present invention refers to a motion picture camera which is characterized in that respectively on the driving shaft to be rotated by means of a driving power from the driving motor and on the shutter shaft to be rotated by means of a rotating power of the above mentioned driving shaft elliptical gears in mutual engagement with each other are provided in such a manner that the ratio of the angular speed to be communicated between the driving shaft and the shutter shaft is continuously increased and decreased while on the above mentioned shutter shaft a non-circular cam to reciprocate the claw for feeding film is provided in such a manner that while the shutter blade is opened the shutter shaft rotates slowly and further the claw for feeding film stops feeding film whereby the effective proper opening angle of the shutter blade is changed largely by means of the above mentioned pair of elliptical gears and the non-circular cam.

An information displaying apparatus includes, bundles of optical fibers with their ends coplanar and disposed in line. A movable masking member imposes information on the light input to the fiber array. At the output end, information markings are selectively illuminated or otherwise luminously designated to display various kinds of information. Displaying means may be disposed within a view finder or on the outer casing of a camera. An artificial light source operates to provide light through the masking member and may be switched on manually or automatically when needed for information display.

Growing community of inventors

Machida, Japan

Tomoshi Takigawa