Abstract:
A vibration reduction apparatus to stably control the driving of a vibration reduction optical system. A vibration reduction apparatus 30 has a fixed portion 31, a moving portion 25, 32, 34-1, 35-1 having a vibration reduction optical system 25 and moves in a plane perpendicular to an optical axis, relatively with respect to the fixed portion, a first detection portion 35 detects relative movement in a first direction D1 of the moving portion and the fixed portion, a second detection portion detects relative movement in a second direction D2 of the moving portion and the fixed portion, and a center of gravity adjusting member 36 disposed at the moving portion such that a center of gravity position G1 of the moving portion can be brought close to a crossing point C of each detection direction of the first detection portion and the second detection portion.
Abstract:
A vibration reduction apparatus to stably control the driving of a vibration reduction optical system. A vibration reduction apparatus 30 has a fixed portion 31, a moving portion 25, 32, 34-1, 35-1 having a vibration reduction optical system 25 and moves in a plane perpendicular to an optical axis, relatively with respect to the fixed portion, a first detection portion 35 detects relative movement in a first direction D1 of the moving portion and the fixed portion, a second detection portion detects relative movement in a second direction D2 of the moving portion and the fixed portion, and a center of gravity adjusting member 36 disposed at the moving portion such that a center of gravity position G1 of the moving portion can be brought close to a crossing point C of each detection direction of the first detection portion and the second detection portion.
Abstract:
A vibration reduction device includes: an optical system that comprises a vibration reduction optical system; a first driving unit that moves the vibration reduction optical system in a first direction; a second driving unit that moves the vibration reduction optical system in a second direction that differs from the first direction. An optical axis of the vibration reduction optical system is located between the first driving unit and the second driving unit.
Abstract:
A lens camera having a viewfinder mechanism and an adjustable strobe light generating unit, wherein the zoom viewfinder mechanism has a disk cam to cause a lens group of a viewfinder optical system to move back and forth in an optical axis direction according to a difference of the distances in the radial direction from the rotation center of shafts of individual lenses of the lens group, the shafts fitting in grooves of the disk and driving the individual lenses of the lens group in order to perform variable power of a zoom viewfinder. Drive gears drive the disk cam and one of the drive gears is a helical gear which has a predetermined angle for a lead angle, the rotation center of the disk cam and the rotation axis direction of the one drive gear being positioned so as to intersect. The strobe light generating unit is moved in the direction of the optical axis of the camera so that a radiating angle of a strobe fitted in the strobe light generating unit is changed according to the variable power of operation of the lens. Jaw portions are integrally formed on the strobe light generating unit and engage rail grooves formed on the body of the camera.
Abstract:
A miniaturized collapsible zoom camera changes viewfinder magnification in accordance with a change in the photographic magnification. The camera is equipped with a collapsible cam tube to cause a first lens group, which rotates around the optical axis, to move from a collapsed position to a position just before a minimum magnification position. Likewise, a zoom cam tube causes the first lens group, which rotates around the optical axis, to move from the minimum magnification position to a maximum magnification position. Sector gears are formed on the outer circumference of the collapsible cam tube and the zoom cam tube. Furthermore, the camera is equipped with a cam tube drive gear which cooperates with the sector gears. A drive motor causes the drive gear to rotate. Another gear cooperates only with the sector gear of the zoom cam tube while a variable power and movement mechanism causes variable power operation in the viewfinder.
Abstract:
A camera capable of trimming photographing has an electric-powered zoom lens, an operating device for zooming the electric-powered zoom lens, a trimming photographing device for obtaining a pseudo zoomed-up photography by partially trimming a photographed picture at a trimming magnification .beta. which can be previously set, and a control device which sets the trimming magnification .beta. of the trimming photographing device to a maximum trimming magnification .beta.max if the operating device is moved to the zoom-up side when the electric-powered zoom lens is at the position of a maximum focal length FT, which zooms down the electric-powered zoom lens while maintaining the maximum trimming magnification .beta.max if the operating device is thereafter operated to the zoom-down side, and which changes the trimming magnification .beta. of the trimming photographing device from the maximum trimming magnification .beta.max to 1 if the operating device is further operated to the zoom-down side when the electric-powered zoom lens is at the position of a minimum focal length FW.
Abstract:
A camera lens barrel for a camera includes first, second, third and fourth lens groups with a diaphragm located between the second and third lens groups. The second and third lens groups are connected, while the first, third and fourth lens groups can move relative to each other along the optical axis of the camera lens barrel. A diaphragm driver is positioned radially outside of the second lens group, while a lens shift driver device, including the horizontal and vertical lens shift drivers, is positioned radially outside of the third lens group. The diaphragm driver and the lens shift driver device are connected to a control unit via a flexible printed circuit. A power transmission extends from the diaphragm driver to the fourth lens group. The power transmission is connected to the diaphragm driver via a pin. When the pin is rotated, the angular rotation of a pin is transmitted to the fourth lens group to focus the camera lens barrel. Thus, the overall diameter of the camera lens barrel is reduced.
Abstract:
A vibration reduction device includes: an optical system that comprises a vibration reduction optical system; a first driving unit that moves the vibration reduction optical system in a first direction; a second driving unit that moves the vibration reduction optical system in a second direction that differs from the first direction. An optical axis of the vibration reduction optical system is located between the first driving unit and the second driving unit.
Abstract:
A lens barrel standard position detection device, attached to a lens barrel equipped with a fixed tube having a first member and a movable tube rotationally moving back and forth along an optical axis of the lens barrel and having a second member engaging the first member of the fixed tube, to detect when the movable tube reaches a predetermined standard position. The lens barrel standard position detection device includes an actuating element movable between a first position and a second position, the actuating element moving to the second position when a working plane portion of the second member moves into contact with the actuating element corresponding to the movable tube reaching the predetermined standard position along the optical axis, an urging member which maintains the actuating element in the first position in a normal state due to an urging force of the urging member, and a detection unit which detects when the actuating element moves to the second position which opposes the urging force of the urging member, thereby detecting the movable tube reaching the predetermined standard position.
Abstract:
A zoom lens barrel containing a support member for supporting a vibration compensation lens and a vibration compensation drive unit thereof. The support member is held inside the lens barrel so that it is moveable in the direction of the optical axis. The support member is formed from a mold, with the molded support member including multiple gear shafts and cam followers. The multiple gear shafts are positioned on the molded support member in a row and in a direction which is perpendicular to the optical axis. The cam followers are positioned on the support member in a direction perpendicular to the optical axis. The multiple shafts are positioned on the support member at different angles from the cam followers so that the respective die extraction angles are different. The multiple gear shafts support a gear train which is positioned near an interior surface of the lens barrel. A flexible printed circuit board inside the lens barrel extends from a control circuit positioned outside of the lens barrel to various electrical components inside the lens barrel. A support member is also provided having multiple arms that extend away from the support member and a cover plate for covering the vibration compensation lens drive unit.