摘要:
A camera of a preliminary winding type in which a film in a patrone is previously taken out from the patrone to roll it round a spool and, each time one frame photographing is completed, the film is rewound into the patrone by one frame in photographing. The camera comprises a motor, a preliminary winding mechanism, a frame-by-frame rewinding mechanism, a focal length varying mechanism, first and second planetary clutch mechanisms, and an engagement mechanism for locking the first planetary clutch mechanism, and is capable of switching the power transmission to the preliminary winding, frame-by-frame rewinding and focal length varying mechanisms by changing the direction of rotation of the motor.
摘要:
A camera system includes a taking lens and a lens cover type of operation card. The operation card incorporates a function of operating the camera system and covers the taking lens when attached to a front of the camera. The operation card may also be attached to another surface of the camera, and may be entirely detached from the camera and used as a remote control device.
摘要:
A zoom lens system shifts the position of front and rear lens groups relative to each other in the direction of the optical axis to change its focal length, by moving a lens barrel back and forth in the axial direction. The lens barrel is formed with cutouts in its rear portion for receiving therein parts and elements projecting forwardly from the plane in which an exposure aperture is located when the lens barrel is retracted, so as to reduce the thickness of the camera with the retracted zoom lens. A focal length changing mechanism comprises a fixed cam and a lever attached to the lens barrel which is turned by the cam when the lens barrel moves back and forth to shift one lens group, thereby changing the focal length of the zoom lens to desired focal lengths. To correct the changes in focus of the zoom lens caused by the change of focal length, an adjusting member is provided in the focal length changing mechanism. An encoder is provided in the camera to detect the shifted axial positions of the lens barrel.
摘要:
A self-photographing method for an autofocus camera, wherein, upon depression of a shutter release button, the subject distance data are detected a plurality of times at periodic intervals, and a predetermined exposure operation, that is, an actual shutter release operation is automatically executed using the autofocus system when the detected subject distance data have changed from each other. The distance data are repeatedly detected and compared with each other until these distance data differ from each other. If the distance data have been equal for a predetermined time interval from the shutter release button depression, then the actual shutter release operation is executed, or is called off and the self-photographing is terminated. It is preferred that the detected change of distance be a decrease of distance, indicating that the photographer has stepped into the picture, whereupon the measured distance becomes his distance in place of the background distance.
摘要:
Provided is a press machine for driving a slide by a motor, including a control device for controlling driving of the motor, in which the press machine has a press capacity which can be variably controlled by using field control for the motor.
摘要:
A camera includes a main body covered with a front cover and a rear cover. The main body has a film take-up chamber. The film take-up chamber has an opening in a right side. In order to cover the opening, a fixed lens barrel of a lens assembly is disposed. A part of the fixed lens barrel constructs a part of the film take-up chamber. To back and front wall portions of the film take-up chamber, back and front press springs are attached respectively.
摘要:
There is disclosed a camera with a cover sliding between a cartridge exchange position and a work position for permitting photography. A cam plate having a driving rack is mounted securely on inside the sliding cover. A coupling gear is mounted in a camera body with its teeth protruded out of the camera body. The driving rack is engaged with the teeth of the coupling gear only while the sliding cover moves between the work position and the cartridge exchange position, so the coupling gear is rotated as the sliding cover moves between the work position and the cartridge exchange position. The rotational movement of the coupling gear is transmitted to a pinion through a rack plate. The pinion is formed integrally with a door drive shaft. The door drive shaft is engaged with a door member of a loaded photo film cartridge, for rotating the door member to close or open a film port of the cartridge. The pinion is urged by a spring that functions as a toggle spring. The spring urges the pinion in a direction to close the door member after the pinion rotates halfway in the closing direction, or alternatively in a direction to open the door member after the pinion rotates halfway in the opening direction.
摘要:
A flexible circuit board has a magnetic head interface IC soldered on a tongue-shaped portion, which is folded such that the magnetic head interface IC is put inside. A front and a rear side of the magnetic head interface IC is covered with shield patterns. After exposure, the magnetic head interface IC drives the magnetic head to record some information of photography to a recording area in a photo film. When an film cartridge is loaded, the information in the recording area is read out for finding an unexposed frame. In recording and reading, the shield patterns absorb magnetic waves generated nearby the magnetic head interface IC, so that recording and reading signals are not interfered.
摘要:
A movable visual field frame (a CP visual field frame) is arranged behind an H visual field frame, which determines a visual field corresponding to a high-vision (H) angle of view. The CP visual field frame comprises a pair of substantially L-shaped movable visual field frame pieces, which are arranged in such a manner as to face each other. First and second driving members are provided in such a manner as to rotate about a finder optical axis, and they drive the pair of the movable visual field frame pieces. A driving shaft is rotated in association with a switching control, and the first and second driving members are rotated by the driving shaft on different rotational ratios with driving gears. The second driving member rotates by a larger rotational angle than the first driving member, and regulates the positions of the movable visual field frame pieces so that upper and lower sides of the CP visual field frame can be horizontal.
摘要:
A zoom camera has at least a rear movable lens barrel movable on an optical axis forwards and rearwards. The rear movable barrel is moved from a collapsed position forwards. Front and rear lens groups are disposed in the rear movable barrel. A lens holder is supported inside the rear movable barrel in a movable manner on the optical axis forwards and rearwards, and supports the rear lens group. Three cam pins and three cam grooves move the lens holder relative to the rear movable barrel. An extension coil spring causes force of pulling the lens holder, biases the lens holder rearwards, and absorbs backlash between the three cam pins and three cam grooves. A combination of a spring plate and an inner wall of the body the extension coil spring when the rear movable barrel is in the collapsed position, to disable the pulling force from occurring. The extension coil spring is extended to enable the pulling force to occur when the rear movable barrel is in front of the collapsed position.