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Searching: photography





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Patent # Description
US-4,288,517 Toner for electrostatic photography containing resin coated silica particles
A toner composition for electrostatic photography which comprises (A) toner powder comprising a base resin and a coloring agent and having an average particle...
US-4,286,845 Zoom lens barrel capable of close up photography
A zoom lens barrel which is capable of zoom and close up photography includes a generally cylindrical barrel part, one end of which is mountable to a camera...
US-4,285,588 Apparatus and method for minimizing red-eye in flash photography
Apparatus and method for minimizing a red-dot artifact in the eye of a flash photograph subject employs a subject conditioning pre-flash, predeterminedly...
US-4,285,585 Exposure control compensating means for close-up photography
In an automatic exposure control camera in which exposure is controlled based on an output of an arithmetic unit, the F-value information of the taking lens of...
US-4,284,337 Photographic apparatus
A photographic apparatus of the foldable type in which, when in preparation for photography, a front housing carrying a photographic objective lens system...
US-4,283,766 Automatic camera control for creating special effects in motion picture photography
An automated camera control drives a video or motion picture camera along multiple independent axes of movement to position the camera for recording an image of...
US-4,283,135 Close-up photography aid
A photography accessory for taking close-up photographs; the accessory including a base frame made from several arms pivoted together, a camera being mounted on...
US-4,277,559 Novel magenta-forming color couplers and their use in photography
Photographic color elements are described wherein one of the emulsion layers comprise a 4-phenylazo-2-pyrazolin-5-one coupler, the phenylazo group of which...
US-4,276,579 Photographic flash device
In a photographic exposure device of the type comprising a flash section comprising a flash tube which flashes by the energy charged on a main discharge...
US-4,275,954 Automatic focusing apparatus for camera
An automatic focusing apparatus in a camera is provided in which a winding operation for advancing the film and for charging the shutter does not cause the...
US-4,273,423 Zoom lens barrel assembly for constant magnification
A zoom lens barrel is constructed such that the axial movement and rotation of a single operation ring relative to a stationary barrel causes zooming and...
US-4,270,853 Sound-recording instant-printing film and camera therefor
Instant-printing film further comprises a magnetic sound-recording band on one end part thereof, and is installed in an instant-printing camera which has a...
US-4,268,593 Recording material for color photography
Recording material, for color photography, which contains at least one piperidine compound containing one or more alkyl-substituted phenol groups, as the light...
US-4,268,592 Material for color photography
Light-sensitive recording material for color photography, which contains, in at least one silver halide emulsion layer, at least one magenta coupler of the...
US-4,268,591 Material for color photography
Light-sensitive recording material for color photography, which contains, in at least one silver halide emulsion layer, at least one yellow coupler of the...
US-4,268,157 Toner image transfer method and apparatus for electrostatic photography
A photoconductive drum is formed with a photoconductive dielectric layer for producing an electrostatic image and an endless transfer belt is formed with a...
US-4,268,152 Bulb photography control system for camera
A control system for a camera controls a shutter release operation electromagnetically. A signal generating circuit produces a switching signal for operating a...
US-4,268,147 Focal plane shutter device
A focal plane shutter device of the present invention is provided with leading blade braking means arranged near the terminal end of running down movement of the...
US-4,268,139 Camera for daylight and flash photography
A flash unit triggering arrangement that cooperates with a shutter control mechanism or circuit of a camera for permitting the firing of a flash lamp of the...
US-4,266,861 Eye fundus camera
An improved eye fundus camera for photographing the fundus of a patient's eye is disclosed. Three separate energy sources are provided which include a first...
US-4,264,698 Developer for electrostatic photography and process for preparation thereof
A developer for electrostatic photography consisting essentially of a dry blend of (A) substantially spherical fixing magneto-sensitive particles of a...
US-4,264,175 Focusing device in camera equipped with both standard and telephoto lenses
In a camera equipped with both a standard lens and a telephoto lens which may be arbitrarily selected for exposures by manipulating a first control knob, a...
US-4,264,168 Projection device, especially for photography, motion pictures and television
A housing which is adjustable for height and within which is placed an object to be projected onto a screen also contains a light source and a reflecting system,...
US-4,262,997 Exposure information indicating device
An exposure information indicating device for use in photography includes a detecting section for detecting various known information values such as brightness...
US-4,261,495 Bag construction
A shoulder bag such as a photography case adapted to be suspended from a shoulder of a bearer of the same is suspended by means of a strap engaging opposed pivot...
US-4,259,423 Means and method for color photography printing
A color photography printing process prints, a test print on the basis of color intensities of three color ranges transmitted through a small selected area of a...
US-4,256,995 Electronic pre-emission flash device
An electronic flash device capable of emitting a flash light of a regulated level over a considerable duration of time, prior to flash firing for emitting a...
US-4,255,510 Development restrainer precursors for photographic elements
Photographic elements, assemblages and processes for color diffusion transfer photography are described wherein certain azole compounds having at least two...
US-4,255,033 Universal focus multiplanar camera
Conventional cameras and other optical instruments produce images upon one plane only. Objects at differing ranges from the lens of such cameras cannot appear...
US-4,254,201 Pressure sensitive adhesive toner of clustered encapsulated porous particles for use in electrostatic photography
A pressure sensitive adhesive toner for use in electrostatic photography which consists essentially of porous aggregates. Each aggregate consists essentially of...
US-4,252,441 Arrangement for measuring exposure in photography with an electronic exposure meter and adapter
An arrangement for measuring exposure in which an adapter is attached to an electronic exposure meter. The adapter has at least three plugs mating with...
US-4,249,825 Method and apparatus suitable for ocular blood flow analysis
Glaucoma and other diseases may be detected by the analysis of angiograms to determine ocular blood flow. Using rapid sequence photography an ocular image is...
US-4,249,815 Camera with means for allowing photography under low light conditions
A standard camera with means for using non-imaging light for activating the film when taking pictures in low light conditions. The film activating means consists...
US-4,249,805 Composite photography system
A composite photography system of a registered matte type having foreground and background camera optical systems is provided. The respective images from each...
US-4,248,961 Material for color photography
Light-sensitive recording material for color photography is provided which contains, in at least one silver halide emulsion layer, a yellow coupler of the...
US-4,247,622 Photodeformable polymeric compositions
The invention is directed to polymeric materials which undergo deformation upon exposure to actinic radiation. These polymeric materials contain at least one...
US-4,247,177 3D Multichrome filters for spectacle frames
This invention relates to a system for photographing, presenting and viewing 3D images, in which a set of mutually extinguishing multichrome "C" and "D" filters...
US-4,246,486 X-ray photography device
A focus alignment system for X-ray photography devices is provided for use with such devices where the film holder is independent of the X-ray source. The X-ray...
US-4,245,025 Transfer sheet and process for preparation thereof
A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or...
US-4,244,644 Method and apparatus for series photography of a subject in motion
A method and apparatus for series photography using a "still" camera for taking a series of discrete shots on a single frame of film of the subject in motion...
US-4,243,881 Time-resolved infrared spectral photography
An intense broadband continuum light pulse of uniform spectral intensity and short time duration is generated. This continuum pulse is then downconverted in...
US-4,242,434 Toner composition for multiple copy electrostatic photography
In controlling the operation of an electrostatic apparatus to produce a large number of copies from an electrostatic image in a multiple copy process there is...
US-4,242,428 Additive system of color photography based on iridescent pigments
An inorganic system of color photography in which colored images are recorded with compositions comprising a mixture of an iridescent pigment of the type...
US-4,239,356 System for the performance of photographing with a motion picture camera, still picture camera or television camera
A system for performance of photographing with moving picture cameras, still picture cameras or television cameras, particularly of direct sound - movie picture...
US-4,238,564 Recording material for color photography
Recording material for color photography, which contains, in at least one silver halide emulsion layer, at least one yellow coupler of the formula ##STR1## ...
US-4,238,153 Automatic focus adjusting device for cameras
A camera selectively settable to a daylight photography mode and to a flash photography mode includes an automatic focus adjusting device having a range finder...
US-4,236,799 Unwinding-mechanism releasing device for use in a camera
Shifting of the image plane during multiple exposure photography is prevented by releasing the unwinding button and a film locking member after the shutter...
US-4,232,685 Larynx stroboscope for photography
A larynx stroboscope device capable of photography following the anode or cathode terminal of a flash discharge tube is connected to a photographing ...
US-4,232,113 Liquid concentrated developer composition, and confection ready to mix with water including it, for use in...
Developer for use in color photography confectioned in a plurality of concentrated compositions in which one first concentrated composition is a liquid...
US-4,232,107 Photographic material suited for use in diffusion transfer photography and method of diffusion transfer...
Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline...
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