摘要:
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.
摘要:
A camera having an anti-vibration sensor positioned so as to reduce the effect of electrically generated noise on the anti-vibration sensor. The camera includes a camera body having first, second and third portions, the second portion for coupling a photographic lens barrel to the camera body and being between the first and third portions. An anti-vibration sensor is positioned on the first portion of the camera body. An electrical noise generating source is positioned on the third portion of the camera body. In this manner, the photographic lens barrel acts as a shielding member when the photographic lens barrel is coupled to the second portion of the camera body. The present invention also describes a camera which includes a camera body, a first anti-vibration sensor which is coupled to the camera body and detects the amount of vibration of the camera in a first direction, and a second anti-vibration sensor which is coupled to the camera body and detects the amount of vibration of the camera in a second direction, the second direction being different from the first direction. The camera includes a strobe and a strobe capacitor which delivers electric charge to the strobe. Wiring electrically connects the strobe to the strobe capacitor and generates electric noise when current is passing through the wiring, the effect of the electric noise being greater in the second direction then in the first direction and the distance from the second anti-vibration sensor to the wiring being longer than the distance from the first anti-vibration sensor to the wiring.
摘要:
A vibration correction system for a camera using a correcting lens driven by a reduction gear train attached to a motor. Image deflection, originating from vibration and the like of the camera, is prevented by shifting the correcting lens. A movement detector, to detect the amount of movement of the correcting lens, is arranged near the drive shaft of the motor or near the first couple of gears of the reduction gear train. After the correcting lens has been driven, the connecting lens is reset to a predetermined standard position, based on the output of the movement detector. By placing the movement detector on or near the drive shaft, a high resolving power is obtained. Accordingly, the correcting lens can be shifted with fine precise movements, and accurate correction of image deflection becomes possible.
摘要:
A camera includes, but is not limited to, a focus adjustment optical system such as a zoom or a non-zoom type optical system, for example, an actuator generating a drive force which moves the focus adjustment optical system, a transmission mechanism transmitting the drive force from the actuator to the focus adjustment optical system, a drive amount detection mechanism detecting an amount of drive of the focus adjustment optical system caused by the actuator; and wherein the actuator, the transmission mechanism and the drive amount detection mechanism are disposed in the camera in a position which is on the outer circumference of the aforementioned focus adjustment optical system and which is on a long side of an aperture that forms light fluxes into a rectangular shape to become incident on a film surface. Also provided is a camera that includes, but is not limited to, a variable power device conducting focus distance variable power operations based on multiple photographic lens groups by moving the multiple photographic lens groups in a direction of their optical axes, a vibration detection device to detect a vibration and to generate vibration signals in relation thereto, a vibration compensation device to correct vibration corresponding to the vibration detection signals from the vibration detection device and wherein the variable power device houses the vibration compensation device inside a main cover of a camera body when the camera is not in use and wherein the vibration compensation device is made to extend to a position outside of the main cover of the camera to a specified region when the camera is in use. Finally, a camera is provided that includes, but is not limited to, a lens groups positioned along an optical axis, a drive device changing a distance between a first lens group of the lens groups and the lens groups. The drive device includes an actuator and a displacement transmission device. The drive device is positioned in the camera along an exterior circumference of a second lens group of the lens groups. The second lens group is closest to an image forming plane.
摘要:
An apparatus to detect the amount and direction of rotary motion for use in a vibration compensation system in an optical camera. An indicator disk is provided around the output shaft of a motor which actuates a compensation lens to compensate for vibrations to the camera. The periphery of the indicator disk is provided with a series of holes. A pair of photodetectors, are arranged on the periphery of the disk so as to detect the holes passing thereunder. The two photodetectors are separated by a distance equal to 3/4 of the distance between two holes. By comparing the pattern of signals emitted by the photodetectors the direction of rotation of the indicator disk can be determined. Further, the pulses in the output of either photodetector can be counted to determine the amount of movement. The actual direction and amount of movement as calculated is provided to a vibration compensation circuit as feedback for use in controlling the compensation lens.
摘要:
A camera having improvements in (a) the placement of anti-vibration sensors, (b) the connection between components of an anti-vibration mechanism, (c) the connection between the anti-vibration mechanism and external testing devices and (d) the connection of the camera to a tripod. The camera body has first and second ends and a photographic lens which is positioned on the camera body between the first end and the second end. A battery compartment, first and second anti-vibrations sensors and a main capacitor are all positioned in the first end of the camera body. The first anti-vibration sensor is positioned between the battery compartment and the photographic lens. The first and second anti-vibration sensors reside on the same sensor card and the sensor card has a connector mounted thereon. An anti-vibration CPU resides on a separate, flexible printed circuit card and is connected to the anti-vibration sensors by inserting a potion of the flexible printed circuit card into the connector on the sensor card. Communication terminals are provided inside the camera for allowing external testing equipment to communicate with the anti-vibration sensors and the anti-vibration CPU. Moreover, the shutter release button is on the top of the camera and a tripod is fixed to the bosom of the camera so that depression forces from the pressing of the release switch are transferred to the tripod and do not cause the camera to vibrate.
摘要:
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.
摘要:
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.
摘要:
An optical lens barrel having a lens group which serves as a vibration compensation lens group and a focusing lens group. The lens group is held by a holder movably secured to a plate. The lens group is movable within the plate on a plane perpendicular to an optical axis of the lens group via a pair of DC motors and associated gear trains. The DC motors and associated gear trains are mounted on the plate. The plate is slidably movable parallel to the optical axis of the lens group by a stepping motor via a series of concentric drive rings disposed around the plate. The drive rings also actuate an aperture mechanism which serves as a shutter. This reduces both the number of lenses and components needed to provide vibration compensation and autofocusing functions.
摘要:
A lens barrel is provided with a lens group that can move against a camera main body, an electrical device that can move with the lens group, and a plurality of flexible printed circuit boards arranged one on top of the other within a space inside the lens barrel, in order to electrically connect the electrical device to an electrical device that is provided outside the lens barrel.