Abstract: A photographic film assemblage including a film spool about which is wound a length of resilient material including a strip of photographic film and an opaque leader. The opaque leader is provided along its sides with a series of integral tabs which are adapted to be displaced from the plane of the leader by a film metering sprocket of a camera during movement of the film. The resiliency of the tabs results in those located in the ultimate convolution of the roll of material being displaced from the curved plane of the ultimate convolution thereby leaving voids or apertures therein. When the tabs appear in both the ultimate and penultimate convolutions of the roll, some of the tabs in the penultimate convolution enter the apertures in the ultimate convolution thereby deterring clockspringing of the roll. When the tabs are located in the plane of the leader, they function to substantially prevent the passage of light to underlying convolutions of film.

Abstract: In a single lens reflex camera having a reflecting mirror provided across the light path of a light beam travelling toward a film surface past the stop of a phototaking lens so as to be retractable from the light path, an apparatus for driving the stop device of the phototaking lens for the control of the stop to a predetermined aperture value and the reflecting mirror in relation to the exposure to the film surface includes stop-down operating means capable of being coupled to the stop device and displaceable between a first position for providing a maximum aperture opening to said stop and a second position for providing a minimum aperture diameter to said stop, moving means having a first moving area capable of moving forward while imparting the displacement from the first position to the second position to the stop-down operating means and moving backward while imparting the displacement from the second position to the first position to the stop-down operating means and a second moving area continuous to

Abstract: A camera provided with a control member for changeover from the film winding to the film rewinding mode and an operating member for actuating the control member, wherein the operating member is made movable in a first direction followed by a second direction, whereby at the terminal end of movement of the operating member in the first direction, the operating member is rendered capable or actuating the changeover control member as it moves in the second direction.

Abstract: A camera with an interchangeable lens, comprising a lens barrel having a focussing lens means, and a camera body having a mount to which a mount of the lens barrel is detachably connected and a focus detecting device, the lens barrel comprising a driving motor for moving the focussing lens means, said camera further comprising a control circuit which is provided either on the camera body or on the lens barrel to give a control signal to the driving motor, the camera body and the lens barrel being provided, on their mounts, with connector means for transmitting and receiving the focussing control signals, the connector means being interconnected when the lens barrel is connected to the camera body.

Abstract: A portion of the driving force for the aperture control apparatus is used to accumulate mechanical energy as required to drive a certain particularly selected device which is to be operated after the operation of the aperture control apparatus. To this end, there is provided mechanical energy accumulation means connected to the driving source. As the result of the work of the mechanical energy accumulation, the speed of the displacement mechanism is reduced.

Abstract: A camera with a lens protective cover includes switching means which turns a power supply of an electronic flash on to establish a flash photography mode for the camera, and a connection mechanism providing an operational connection between the switching means and the lens protective cover. When the lens protective cover is closed while the switching means assumes a position in which it establishes a flash photography mode, a movement of the cover causes the switching means to be automatically returned to a photographing mode other than the flash photography mode.

Abstract: A camera which includes a liquid crystal focusing screen and an exposure control circuit that measures light reflected from the subject to be photographed after its passage through the liquid crystal screen is further provided with a circuit for compensating the light value determined by the exposure control circuit when operating voltage is not applied to the focusing screen so as to thereby compensate the amount of light measured through the screen when the nonapplication of operating voltage to the focusing screen causes the screen to transmit light therethrough less readily than when operating voltage is applied thereto.

Abstract: A photographic roll film camera has a film supply chamber, a spoolless film take-up chamber, a transporting element for transporting the film between these chambers, and a film roll-forming element including a part of the wall of the take-up chamber formed in correspondence to a whole film roll, and a spring-biased guiding lever extending into the take-up chamber and bounding together with the wall a small space for forming a first coil of the film roll so that the initial portion of the film is guided into the small space by the guiding lever and thereafter with increase of the diameter of the film roll during winding of subsequent coils, the guiding lever turns and space for formation of the film roll expands.

Abstract: A portable camera support includes a conventional camera mounting assembly affixed to a stationary leg/securing strap/extendible leg combination. The support is alternately operable in a retracted position for securing to a companion object with the aid of the securing strap or an extended position for independently supporting a camera. The extendible legs are pivotally mounted to the stationary leg and preferably include means for stopping their inward and outward rotation.

Abstract: A connecting device for optically and mechanically connecting an eyepiece section of an endoscope and a light receiving section of a television camera so that the optical axes of these sections are in alignment comprises a cylindrical housing having one end connectable to the eyepiece section and the other end connectable to the light receiving section, a prism located between the eyepiece section and the light receiving section, and having a first optical axis in alignment with the optical axis extending from the eyepiece section to the light receiving section, and a second optical axis at right angles to the first optical axis, a holder in the housing for supporting the prism so as to be able to rock relative to the housing around the first optical axis, a finder extension tube for the connecting device connected to the holder so as to be rockable therewith and extending outward from the peripheral surface of the housing along the second optical axis for observation of an endoscopic picture, and a click mec

Abstract: An adjustable diopter type finder optical system comprising an eyepiece comprising a first lens component having negative refractive power and a second lens component having positive refractive power, the finder optical system being arranged to make diopter adjustment by moving both of the first and second lens components in the same direction along the optical axis by varying the distance between those lens components and arranged so that variation of magnification and fluctuation of aberrations are small.

Abstract: A stereo optics apparatus, comprising a zoom lens attachable to a camera body and having an operating element operable when moved in first and second directions to increase or decrease the focal length of said zoom lens, first and second spaced apart movable reflectors facing said zoom lens on either side of and transverse to the optical axis of said zoom lens, said first and second reflectors being movable to change the acute angle included therebetween, third and fourth reflectors facing said first and second reflectors, respectively, and said zoom lens, said reflectors being operable to divide the light entering said zoom lens into two separate beams, a first electrical motor for operating said operating element of said zoom lens, a second electrical motor for moving said first and second reflectors, said motors being operated in synchronism such that said included angle is increased or decreased by said second motor as said focal length is decreased or increased, respectively, by said first motor.

Abstract: The apparatus of the present invention is for use with a subject and a camera, including a lens and a shutter, for positive vignetting comprising a means adjacent the camera lens for at least partially obstructing subject light received by the camera lens in regions of the camera lens to be positive vignetted, a means for providing auxiliary light to the region adjacent the camera lens, and a means for directing a pattern of the auxiliary light to the camera lens in the regions of the camera lens to be positive vignetted. The method of the present invention is for use with a subject and a camera including a lens for providing positive vignetting comprising the steps of partially obstructing subject light from the camera lens in a region of the camera lens to be positive vignetted, and, introducing auxiliary light to the region to be positive vignetted.

Abstract: An automatic film wind-up camera to which can be attached any of three film backs containing 120, 220 or 70 mm type film. Each film back is provided with a signalling mechanism varying with the type of film contained within the film back. The camera body includes a film frame indexing mechanism capable of winding-up any one of the three film types. The film frame indexing mechanism of the camera is set for winding-up the appropriate length of film by the signalling mechanism provided on the film back.

Abstract: In a film cartridge employing roll film with a backing strip, film flatness is improved by means of two innovations which are employed either individually or in combination, depending on the specific type of film cartridge involved. First, to prevent the relative slippage between the paper and the backing strip, resulting from "clock springing" of the film supply roll, the trailing end of the film is attached to the backing strip. Second, the film and backing strip assembly is provided initially with sufficient extra backing strip in the film take-up chamber to guarantee that there will always be a surplus of backing strip in that chamber so that only the film will be tensioned by the rotation of the take-up roll.

Abstract: A panoramic camera utilizes a rotating drum to mount the lens and front and rear vertical slits defined by the drum pass a narrow band of light through the lens and onto a cylindrically formed film sheet held at the rear of the drum by a frame. A small DC reversible electric motor drives the drum through friction wheels rather than gears to avoid play and backlash, and sweeps the drum through its exposure cycle, immediately upon the termination of which it reverses direction to return to the starting position.

Abstract: A four-lens-element albada finder comprising a field mask lens having a field mask and an eyepiece of a positive lens to improve the sight of the visual field and field mask images.

Abstract: In a photographic camera comprising a film magazine receiving chamber shaped to permit insertion of a film magazine having a film leader thereinto in one axial direction of the film magazine, and a film leader guiding means for guiding the film leader to extend in a proper direction when the magazine is inserted into the chamber, a tongue portion position limiting member is provided for positioning a narrow tongue portion formed in the leading end portion of the film. The tongue portion position limiting member is permitted to move to its operative position only when a magazine having a short film leader consisting substantially only of the tongue portion is inserted into the magazine receiving chamber.

Abstract: In an easy loading camera comprising a film magazine receiving chamber formed in the camera body on one side of the film aperture and shaped to permit insertion of a film magazine having a film leader thereinto in one axial direction of the film magazine, and a film leader guiding means for guiding the film leader in between the film aperture and a pressure plate from one longitudinal edge thereof when the magazine is inserted into the chamber, there are provided first and second edge limiting members. The first edge limiting member is disposed in the camera body to abut against said one longitudinal edge of the film leader to limit its position in the transverse direction thereof when the film leader is introduced into the space between the film aperture and the pressure plate. The second edge limiting member is mounted on the back lid of the camera body so as to abut against the other longitudinal edge of the film leader to limit its position in the transverse direction thereof when the back lid is closed.

Abstract: A stator of a generator, which stator comprises a housing accommodating a slotted magnetic core 2, a dielectric oil-separating cylinder 4 arranged next to the internal surface of the magnetic core, and a winding composed of two series-connected half-windings 7, 8, each composed, in turn, of high-voltage elements 6. The high-voltage elements 6 of one half-winding 8 in the slotted part of the stator are placed in insulation sleeves 14 which have hollow projections 15 on their internal surfaces. Placed between the hollow projections is a thermosetting compound. The part of each insulation sleeve, which extends beyond the slotted part of the stator, has a cylindrical portion integral with a cone-shaped cable-type termination reinforced with current-carrying layers.