Abstract: An apparatus, such as a camera, comprises a computing device which computes a parallax correction signal for correcting a parallax of a viewfinder on the basis of a focusing distance and a focal length of an image forming optical system, and a driving device which drives the viewfinder on the basis of the parallax correction signal provided by the computing device.

Abstract: A hybrid camera includes a camera housing (12); an electronic imaging device (68) supported within the camera housing; a first optical system (58) for focusing light from a scene onto the imaging device, the first optical system having a first optical axis (16') and a first field of view (162); a film imaging plane (48) defined within the camera housing for photographic film (44); a second optical system (30) for focusing light from a scene onto the film imaging plane, the second optical system having a second optical axis (14') spaced from the first optical axis and a second field of view (164); a viewfinder (18, 26) supported by the camera housing, the viewfinder having a third optical axis (18') and a third field of view, the viewfinder being located relative to a selected one of the first and second optical systems such that the third field of view includes at least 75% of the field of view of the selected optical system; the field of view of the selected optical system being larger than that of a non-sel

Abstract: In a zoom finder incorporated into a camera with a zooming function, the power of a motor, which also serves as a motor for driving a lens barrel of a taking lens, is transmitted to a lens barrel driving gear, and it is transmitted via a gear train to a cam shaft, where a cam face for regulating positions of movable lenses in a finder variable magnification optical system is formed. The gear train is held by a gear holding plate, and is directly attached to the bottom of an AF/finder body frame, in which the cam shaft is mounted, with the gear holding plate. As a result, the backlash of the gear train can be small, and a hysteresis of a magnification and a visual field rate, hysteresis which is caused by the back and forth movement of the movable lenses, can be prevented.

Abstract: A zoom lens camera includes a whole unit moving device to move a front lens group and a rear lens group together as a whole in an optical axis direction, and a relative moving means to vary a distance between the front lens group and the rear lens group. The whole unit moving means is driven during a zooming operation, and at least the whole unit moving means or the relative moving means is driven during a focusing operation to focus on a subject to be photographed.

Abstract: A magnification change-over device is arranged to be highly suitable for a camera of the kind having a photo-taking lens and a viewfinder arranged independently of each other. The device includes the photo-taking lens having an image magnification which is variable; the viewfinder which is arranged to have an image magnification thereof also variable; an operating device for varying the image magnification of the viewfinder; a detecting device for detecting the magnifying state of the viewfinder; and a driving apparatus for driving the photo-taking lens according to a detection signal of the detecting device when a shutter release operation is performed. After a magnification setting operation is performed on the viewfinder, the change-over device changes the magnification of the photo-taking lens according to the magnification of the viewfinder when a photographing operation is actually performed.

Abstract: In a zoom finder of a zoom lens camera, a movable variable power lens is supported to move in an optical axis direction and is moved to predetermined positions by a cam member which is driven in association with movement of the zoom lens. The cam member is provided with a groove or a projection at a reference position. The cam member is held in the reference position by a holding member which is engaged by the groove or the projection before assembling the finder to the zoom lens camera.

Abstract: A magnification change-over device is arranged to be highly suitable for a camera of the kind having a photo-taking lens and a viewfinder arranged independently of each other. The device includes the photo-taking lens having an image magnification which is variable; the viewfinder which is arranged to have an image magnification thereof also variable; an operating device for varying the image magnification of the viewfinder; a detecting device for detecting the magnifying state of the viewfinder; and a driving apparatus for driving the photo-taking lens according to a detection signal of the detecting device when a shutter release operation is performed. After a magnification setting operation is performed on the viewfinder, the change-over device changes the magnification of the photo-taking lens according to the magnification of the viewfinder when a photographing operation is actually performed.

Abstract: An apparatus for eliminating a backlash in a zoom finder of a zoom lens camera. A cam member is provided with a cam surface that is engaged with movable variable power lens of the finder. The cam member is driven in association with the zoom-photographing lens, and the cam surface is provided with a zoom section as well as a transfer section in which no movement of the movable variable power lens occurs. A backlash eliminating cam surface is provided separately from the cam surface on the cam member for the movable variable power lens. An oblique cam surface is provided on the backlash eliminating cam surface and is inclined with respect to a plane perpendicular to the optical axis of the movable variable power lens. The oblique cam surface is formed in a section corresponding to the zoom section side of the transfer section of the cam surface. A backlash eliminating member is biased and pressed against the oblique cam surface to exert a drive force on the cam member.

Abstract: The dual-focus change-over camera provides a camera which allows telescope or wide angle photographing with a simple arrangement, and which is inexpensive, small size, and light weighted. The camera comprises a finder change-over member arranged to be movable for establishing two finder openings for different focal distance, a telescope lens and a standard lens for performing photographing with two focal distance, a fixed mirror for reflecting image light from the telescope lens, and a movable mirror movable between a first position (telescope position) for directing the image light from reflected by the fixed mirror to a film and a second position (standard position) for directing the image light from the other standard lens to the film. Then, the movable mirror is rotated to the first or second position in interlocking with the sliding operation of the finder change-over member.

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 lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).

Abstract: A camera is applied to a compact camera or a VTR integrated with a simplified camera. A cam cylinder is used as lens driving mechanisms for a photographing optical system and a finder optical system. A moving lens frame and a connecting member provided with a cam dependent moving member are connected with an elastic member for forcing in a direction approaching each other, and then when an external force is added to the moving lens frame, the zoom lens system can be prevented from being damaged. A space near a focal surface is sealed up by a taking lens frame and a concave portion of a case, whereby the focal surface can be kept from collecting dust. Further, both end portions of a guide pole for guiding the taking lens frame so as to move back and forth in the case are press fitted into through holes formed at front and rear ends of the case and supported, whereby the guide pole can be assembled easily.

Abstract: A camera having a zooming lens barrel. The zooming lens barrel includes: plural lens component; a guide portion for guiding one of the plural lens components along the guide portion in an optical axis direction of the plural lens components in which the guide portion has plural focal distance positions; a driver for moving one of the plural lens components along the guide portion in the optical axis direction; a movement controller for controlling the driver so as to move one of the plural lens components to a predetermined position. The guide portion includes a first area for performing focusing from the first focal distance position, a second area which is not used for focusing, and a third area for performing focusing from the second focal distance position.

Abstract: A camera having a lens barrel and a compartment for holding one of a spool and a cartridge. A motor in the camera is coupled to a reduction gear train which transmits a drive force of the motor to the lens barrel. A rotary shaft, positioned between the compartment and the lens barrel, is geared to and branches from the reduction gear train so as to receive a drive force from the reduction gear train. A zoom finder device, positioned between the compartment and the lens barrel is driven by the rotary shaft. This arrangement allows the motor to transmit a drive force to a driven device placed adjacent to a drive source, without making the drive device large, and without unnecessarily increasing the number of required components.

Abstract: A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.

Abstract: A finder apparatus for use with a lens-shutter type camera composing a zoom imaging optical system, a zoom finder optical system separate from said zoom imaging optical system, and an electronic flash device. The zoom finder optical system is made as a real-image zoom finder apparatus, with part of the associated optical elements being disposed behind the electronic flash device, and part of the optical path from the objective lens to the eyepiece being bent backward of the electronic flash device to pass through the optical element disposed behind the electronic flash device.