摘要:
A camera having a hand tremor correction mechanism with improved positioning of the hand tremor correction mechanism. The camera includes a photographic lens which moves along the optical axis of the photographic optical system. A vibration detection unit detects camera vibration, such as from hand tremor, and produces a corresponding output signal. A vibration correction mechanism, coupled to the external periphery of the photographic lens and electrically connected to the vibration detection unit via a flexible printed circuit board, receives the output signal of the vibration detection unit and compensates for the vibration detected by the vibration detection unit. The camera can also have a vibration correction mechanism which is coupled to the external periphery of the photographic lens and which shifts the photographic lens to compensate for the effects of vibration, the vibration correction mechanism having a thickness or width in the optical axis direction which is less than or equal to the thickness or width of the photographic lens in the optical axis direction.
摘要:
A vibration compensation mode selection apparatus and associated visual display for a camera which allows a photographer to enable or disable a vibration compensation unit while receiving visual feedback regarding the operation state of the vibration compensation unit and information regarding the vibrations detected within the camera. A vibration detection unit is provided to output a signal indicating the amount and direction of vibrations experienced by the camera. A vibration compensation unit drives the vibration compensation lens perpendicular to the optical axis of a photographic lens system to correct for the vibrations detected by the vibration detection unit. A button is provided on the front face of the camera to enable the photographer to disable the vibration compensation unit by pressing the button. A display unit is provided to indicate to the photographer whether the vibration compensation system has been enabled or disabled. For example, the display unit can be configured to flash at a high frequency when the vibration compensation unit has been disabled. Further, the display unit can be configured to provide information regarding the severity of the vibrations detected within the camera. Specifically, the display unit can be configured to steadily illuminate to indicate vibrations which can be corrected by the vibration compensation system, and at a slow rate to indicate vibrations which are outside the correctable range of the vibration compensation unit. The display unit can either be provided within the viewfinder or on the body of the camera in a location easily visible by the photographer.
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:
A camera having a photographic optical system contained in a lens barrel including a zoom cam tube and a collapsible mount cam tube. The zoom cam tube is movable in a focal length adjustment region between a Tele position and a Wide position, while the collapsible mount cam tube is movable in a collapsible mount movement region between the Wide position and a fully collapsed position. During focal length adjustment action, a gear which transmits a drive force of a motor is in engagement with a first rack on the zoom cam tube, and only the zoom cam tube rotates. Due to this rotation, a cam portion is rotated via other gears meshed with the first rack, and a pair of viewfinder lenses and a light generating unit, are made movable. During collapsible mount action, the gear is in engagement with a second rack, only the collapsible mount cam tube is rotated, and the drive force of the motor is not transmitted to the cam portion.
摘要:
An image deflection preventing device for a camera, such as a still camera which is used to drive a deflection preventing optical system in accordance with readings from angular velocity sensors and other circuitry. Moreover, an exposure mode selection device is included to select strobe photography according to the focusing distance from a distance measuring unit maintained in the camera to a subject to be photographed. The selection device can select strobe photography when the focusing distance is closer than a predetermined distance or when photographic magnification from a focal length detection unit to a subject to be photographed is greater than a predetermined value. The selection of strobe photography is done using results from a photometric unit in conjunction with the determination of a brightness level. In particular, if a given brightness level is equal to or greater than a predetermined value, strobe photography is selected, otherwise, exterior light photography is selected. The brightness level for selection of strobe photography is typically higher at closer distances, longer focal lengths, or larger photographic magnifications.
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 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.