Abstract: A shock absorber of a mirror in a single lens reflex camera having a mirror which rotates about a shaft to move between a viewing position and a retracted position includes a rotating member which rotates together with the mirror when the mirror rotates, a brake member which is rotatable about a shaft, a friction member which resists the rotation of the brake member, and an association member which is provided on the rotating member to rotate the brake member together with the rotating member in the same direction when the rotating member rotates in the forward or reverse direction, at the termination of the upward movement of the mirror from the viewing position to the retracted position or at the termination of the downward movement from the retracted position to the viewing position.

Abstract: A combination of camera bodies and detachable lenses including a lens-side and body-side bayonet mounting structure on two format types of lens and camera bodies to allow the mounting of a larger format lens to a smaller format body, and to preclude the mounting of a smaller format lens to a larger format body. The body-side mounts have mounting gaps of predetermined sizes, and the lens-side mounts have mounting members of predetermined sizes to fit in the mounting gaps. The larger format lens-side mounting member is sized to fit into both smaller and larger format mounting gaps, and the smaller lens-side mounting member is sized to fit into only the smaller format mounting gap. Common reference surfaces are provided to all of the mounts to position the lens in the radial and axial directions.

Abstract: A built-in flash system is disclosed which includes a housing chamber provided in the upper front of a penta-house of a finder optical system, and a casing provided in the housing chamber and having a flashlight emitter arranged so as to be movable between a projecting position where the casing is projected for light emission and a housing position where the casing is housed in said housing chamber, the casing is arranged to be moved between the projecting position and the housing position by a linkage mechanisms disposed at sides of said built-in flash system.

Abstract: A member to be adhered is provided with a body having a bonding surface on which an adhesive is applied, and a non-bonding surface from which a grip portion is integrally formed, allowing insertion of the body into a sealed member.

Abstract: A built-in flash system is disclosed which includes a housing chamber provided in the upper front of a penta-house of a finder optical system, and a casing provided in the housing chamber and having a flashlight emitter arranged so as to be movable between a projecting position where the casing is projected for light emission and a housing position where the casing is housed in said housing chamber, the casing is arranged to be moved between the projecting position and the housing position by a linkage mechanisms disposed at the sides of said built-in flash system.

Abstract: A zoom lens barrel has first and second groups of lenses supported by respective lens frames and a cam mechanism which controls the axial position of at least one of the lens groups. The cam mechanism comprises a guide pin which is provided on the lens frame of the associated lens group to be controlled by the cam mechanism, a cam ring which is provided on its one end face with a cam surface with which the guide pin comes into contact, and a cam ring rotating mechanism which rotates the cam ring.

Abstract: A focus and shutter control apparatus of a camera including an actuating member which is driven by a reversible motor, an automatic focus control mechanism which determines a displacement of a focus adjusting lens in accordance with a displacement of the actuating member in one direction, a shutter control mechanism which determines the opening angle of the shutter mechanism in accordance with a displacement of the actuating member in the other direction, and a shutter biasing mechanism for biasing the shutter mechanism in a direction to open or close the photographing aperture, so that one of the opening and closing operations of the shutter mechanism is effected by the biasing mechanism, the other closing or opening operation being effected by the movement of the actuating member which in turn is moved by the reversible motor.

Abstract: In an auto-focus camera, the focus position of the lens is locked to permit the user to let go of the shutter button, with subsequent depression of the shutter button resulting in photography at the retained focus position of the lens without further lens driving.

Abstract: A built-in flash system is disclosed which includes a housing chamber provided in the upper front of a penta-house of a finder optical system, and a casing provided in the housing chamber and having a flashlight emitter arranged so as to be movable between a projecting position where the casing is projected for light emission and a housing position where the casing is housed in said housing chamber, the casing is arranged to be moved between the projecting position and the housing position by a linkage mechanisms disposed at sides of said built-in flash system.

Abstract: A device for adjusting a focusing detecting mechanism in a single-lens reflex camera includes a first mirror holding frame having a first mirror of the half reflecting type adapted to divide a light beam from a lens into a reflected light beam and a transmitted light beam, and being rotatably mounted on a mirror box body. A second mirror holding frame having a second mirror adapted to reflect the transmitted light beam from said first mirror is rotatably mounted on said first mirror holding frame through at least one shaft. The shafts for mounting the second mirror holding frame is movable in a direction which is substantially parallel with the surface of said first mirror. A focusing detecting device is provided at a position which is on the optical axis of said light beam reflected by said second mirror and is in conjugation with a finder focusing screen.

Abstract: An abutment pin is provided for defining the fully open position of the aperture release member on an interchangeable lens. The aperture drive member on the camera is biased toward the abutment pin so that the rest position of the drive member will always correspond to a fully open aperture regardless of lens misalignment. The aperture stop down is then controlled by measuring the movement of the drive member from its rest, or start, position.

Abstract: In a camera provided with a governor mechanism for controlling the mirror raising speed, a braking force is applied to the flywheel during the latter stages of mirror movement to prevent damage to the mirror and governor mechanism.

Abstract: In a speed change gear supporting mechanism, the winding, top curtain speed change and bottom curtain speed change gears are all slidably mounted to a common support cylinder which is in turn rotatably supported about a shaft via axially displaced roller elements.

Abstract: A photographic camera of interchangeable lens type has an interchangeable objective that can be removably mounted on a camera body and a plurality of switches each capable of assuming a first or a second state. The switches all assume the same state when the objective is removed from the camera body and selectively assume the first and second states according to the value of at least one lens characteristic when the objective is mounted on the camera body. An automatic exposure control mechanism is operated responsive to the selectively assumed states of the switches when the objective is mounted on the camera body. A shutter release mechanism is disabled responsive to said same state of all the switches.

Abstract: A camera in which a standard film, 120 or 220 size is loaded behind the picture plane by using a standard film reel with film spool mounting members and means for guiding and holding the standard film and in which film back exchange is not carried out. The standard film reel is designed to be detachably mounted in the camera through an opening formed in the rear part of a reel accommodating chamber in the camera. The standard film can be replaced by a 70 mm film reel which is provided with mounting members for mounting a 70 mm film magazine outside and reel accommodating chamber and means for guiding said 70 mm film into the reel accommodating chamber and holding it therein. This is designed to be detachably mounted in the camera to thereby allow said camera to commonly use standard film and 70 mm film.

Abstract: A single lens reflex camera having a Keplerian telescope type eye level finder optical system and the display of data in a viewfinder, the data display is provided on the second focus surface of the optical system or in the vicinity thereof. A interchangeable eye piece housing uses a mount device having a camera side mount and an eye piece side mount provided between the second focus surface and an eye level eye piece of the optical system. An eye level eye piece housing and a waist level eye piece housing are interchangeably mounted on the camera side mount. The eye level eye piece housing comprises an eye level eye piece and an eye piece side mount.

Abstract: In the present invention, stopping-down, sector preliminary closure and lens shutter release are effected in association with an interlocking member of the lens. The difference between the amount of operation of the interlocking member effected when a camera with an electronic eye, hereinafter an EE control mechanism is operated is obtained by varying the amount of operation of the interlocking member, regardless of the pressure or absence of EE control provided by the EE control mechanism. The use and non-use of the lens shutter is switched depending on this difference. The relating means between the camera and the lens is substantially identical to the relating means between an ordinary interchangeable lens not having a lens shutter and an automatic aperture. Therefore, for switching between the lens shutter use and non-use, it is unnecessary to provide an additional relating means between the lens and the camera.

Abstract: A motorized system for a camera using a common motor for film winding and shutter release wherein the shutter release operation is performed for a first direction of rotation of the motor and the film winding operation performed for the second or opposite direction of rotation. A mechanism including a ratchet and pawl arrangement is provided for returning the actuating mechanism to its rest position during the winding operation. Depression of the shutter button causes a control signal to be transmitted effecting motor operation in the first direction which releases the shutter through the actuating mechanism. Once the shutter release has been completed, a locking lever is released which simultaneously actuates a switch causing the motor to reverse direction and releasing a locking ring which is coupled to the winding shaft of the camera. The winding operation continues until the locking lever falls back into position with the locking ring at which time power is removed from the motor.

Abstract: An apparatus to be used in a camera to digitally indicate inside the viewfinder, film exposure values based upon iris opening, shutter speed and film exposure index.

Abstract: A Kepler telescope type optical finder system for an SLR camera comprises a simple and compact prism having a generally wedge shape as contrasted with finder optical systems using surface mirrors or pentaprisms. The prism may be shaped so that the angle formed by the incident optical axis thereto and the emitting optical axis therefrom is smaller than 90.degree. in order to further miniaturize the overall size of the camera. In this case, an additional wedge-shaped prism is inserted between the first focal plane of the optical system and the prism in order to reduce the chromatic aberration. The additional wedge-shaped prism may be provided with a surface formed into the surface of the condenser lens.