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Searching: photography





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Patent # Description
US-4,367,023 Camera flash light control circuitry
Camera exposure control circuitry capable of functioning with a dedicated flash device for producing a preliminary flash light of a relatively long controllable...
US-4,365,875 Motion picture camera
A motion picture camera is equipped with a shutter opening angle adjusting device capable of changing the opening angle of a shutter including a plurality of...
US-4,362,795 Process for forming photographic images and photographic light-sensitive material for use therein
A process for forming photographic images comprising a silver image and a dye image, comprising development processing an imagewise exposed silver halide...
US-4,361,783 Target for picture tube, tube provided with such a target and picture apparatus incorporating such a tube
The invention relates to a shooting target. The signal plate covering one of the faces of the actual target is subdivided into a plurality of electrically independent...
US-4,361,645 Color photography element with induced spectrosensitization
A photographic element comprising a plurality of layers (e.g., three) of light sensitive emulsions arranged one on top of the other and based on a support, each...
US-4,360,580 Liquid developer for use in electrostatic photography
A liquid developer for use in electrostatic photography is prepared by blending in a carrier liquid having a high electric resistivity and a low dielectric...
US-4,358,523 Film units for photography of diffusive transfer process type
In a film unit for photography of the diffusive transfer process type including a photosensitive sheet, a mask defining an image border definition with an...
US-4,358,276 Educational devices
A simple, durable, inexpensive educational device for demonstrating the physical properties of colliding, accelerating and vibrating objects, especially suitable...
US-4,357,102 Photography system with large length to width picture format ratio
The viewfinder of a conventional 35-mm. camera has a horizontal portion masked off by an appropriate insert so that the scene viewed has a length to width ratio...
US-4,353,641 Color photography print with exposure data and means for making
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-4,352,198 X-Ray photography cassette
An X-ray photography cassette incorporating an automatic peeler for removing the film from the cassette. The cassette includes a frame and a front plate mounted...
US-4,351,600 Flash output control failure warning device of an automatic flash output control speed light
A flash output control photography failure warning device in a camera is provided with a quantity-of-light detecting circuit adapted to start operating in...
US-4,351,594 Electronic exposure and flash control systems for slit-shutter type cameras
A flash photography system adapted for the combination of an electronic flash device and a photographic camera with an electrically controlled shutter which, as...
US-4,349,266 Lens cap for a camera
A lens cap is formed with not only a lens covering portion for covering the photographic objective lens of a camera, but also with both a portion, such as...
US-4,344,680 Photographic devices for controlling flash photography
In a photographic system for flash photography, the firing current of an electronic flash tube is selectively restricted in accordance with the detection of...
US-4,343,544 Diaphragm control apparatus for combined use of an electronic flash with a camera
A diaphragm control apparatus for combined use of an electronic flash with a camera includes a changeover switch which assumes different positions depending...
US-4,342,819 High resolution developed color film
A high resolution developed color film in which the usual color image is given increased sharpness and resolution by the provision of a metallic silver image...
US-4,341,449 Camera capable of standard and close-up exposures
A camera capable of standard and close-up exposures in which mounted in a single camera body are a light source for illuminating a minute subject, a close-up...
US-4,340,284 Temperature-compensated signal transmitting device
In a camera having means for arbitrarily selecting the exposure condition of a film thereby to generate a signal based on said selection, said signal...
US-4,339,769 Photography apparatus for television picture
A photography apparatus for television picture comprises a video tape recorder which detects a frame specifying signal recorded on an audio track corresponding...
US-4,336,985 Camera with macro-photographic system
A camera which has a macro-photographic optical system for taking the magnified picture of a minute object or specimen, a first viewfinder system for permitting...
US-4,336,405 Silver halide developing agents
There are described novel compounds which include a silver halide developing function, a colorless ligand which is a radical of an iminodiacetic acid and a...
US-4,335,944 Apparatus for underwater image-recording as by sonar-triggered elapsed time strobe photography and the like
This disclosure is concerned with improvements in underwater elapsed time strobe-camera apparatus and the like involving sonar-triggering by a sonar beam...
US-4,334,737 Zoom lens capable of macro-photography
A zoom lens capable of macro-photography includes first and second movable lenses coupled to first and second cam rings, respectively. The first and second cam...
US-4,330,185 Apparatus for exposing, developing and disposing of remnants of film units
The remnants of film units which are withdrawn from a cassette in the housing of a camera for instant photography are reintroduced into the cassette subsequent...
US-4,328,265 Process for preparation of a transfer sheet for electrostatic photography or printing
A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or...
US-4,327,978 Camera diaphragm control device for flash photography
A camera diaphragm control device which arrests a diaphragm when a TTL light measurement output represents a given relationship with respect to a reference...
US-4,327,960 Lens cap holder
The present invention relates to the field of photography and is directed to an improved lens cap holder to support the lens cap in close proximity to the camera...
US-4,327,174 Method of preparing a carrier material for photography
This invention relates to a carrier material for photographic purposes which is formed of paper coated with a synthetic resin. The paper contains a water soluble...
US-4,325,981 Method of preventing color accurate reproductions using color photocopiers and the like
A method of preventing color accurate reproduction of a colored pattern with color photocopiers or color photography using photosensitive materials having...
US-4,325,621 Electronic flash device
In an electronic flash device used as an artificial light source in photography, a liquid crystal plate or window is disposed in front of a flash unit comprising...
US-4,325,617 Camera exposure control device
AE-lock photography with accurate exposure control is made possible by a camera exposure control device which memorizes outputs of a T.T.L. light measuring...
US-4,322,607 Camera setting calculator for underwater color photography
The Camera Setting Calculator for Underwater Color Photography is a manual, mechanical calculator to be used in determining the aperture setting (f-number) of a...
US-4,320,207 Polyester film containing fine powder of crosslinked polymer
There is disclosed a polyester film containing from 0.001% to 4% by weight fine particles of a crosslinked polymer having an average diameter of 0.1 to 5.mu.,...
US-4,320,187 Photographic film unit for diffusion transfer with a translucent mask sheet
In a film unit for photography of the diffusive transfer process type including a photosensitive laminate, a mask sheet defining an image border definition with...
US-4,320,186 Electrographic method for preparing original for projection and transfer film for use in method
Disclosed is a method for preparing an original for projection by using a transfer film comprising a transparent plastic film substrate, an undercoating layer...
US-4,318,599 Apparatus for exposure control for microphotography
The invention contemplates improved exposure-control means for use in microphotography, providing optional availability of semi-automatic exposure control and of...
US-4,317,707 Portable electrolysis unit for recovery of silver from photographic film
The device is a portable drum having a removable end cap and a removable plug. The end cap is electrically connected to an electric current and has a pair of...
US-4,317,622 Exposure control apparatus for flash photography
Exposure control apparatus for a camera having an objective lens, an unregulated, fixed output flash device which, in the absence of ambient light, provides...
US-4,316,658 Camera for close-up and normal range photography
A camera, operable in flash and ambient exposure modes, has adjustable lens apparatus useful for close-up and normal range photography. A photoconductively...
US-4,315,187 Stroboscopic dishcharge tube for photography
A stroboscopic discharge tube for use in photography is provided which comprises a light-transmitting tube having its opposite ends closed, a cathode and an...
US-4,313,653 Controller for lapping photography of cinecamera
Controller for the lapping, fade out and fade in photography of a cinecamera, in which a diaphragm is slowly stopped down partially, photography is interrupted,...
US-4,310,231 Close-up copy photography apparatus
A system for close-up and copy photography is so designed that a zoom lens whose total barrel length remains unchanged during zooming operation is attached to a...
US-4,310,092 Photography shoulder bag with a pivotal lid
A photography case or bag is provided having an apertured wall on which discrete photograhic items may be releasably mounted by means of readily detachable...
US-4,309,099 Adjustable apex camera system
A camera support system, particularly for close-up and copy photography, features a light-weight larger bipod consisting essentially of a pair of foldable legs,...
US-4,309,094 Multi-angle photography
A plurality of views of an object are simultaneously recorded on a single frame of film together with information identifying the object by a system employing a...
US-4,307,949 Shutter control system having information circuit for introducing informations for flash photographing
In a program shutter of the type in which the aperture opening gradually increases with the lapse of time, informations such as sensitivity of the film and the...
US-4,305,647 Camera flash photography systems
In a flash photography mode for a camera, a preliminary flash is generated for a substantial duration and substantially constant intensity prior to the primary...
US-4,304,477 Three dimensional camera having lenticular screen moving apparatus
A photographic camera for three-dimensional photography has a housing which includes an opening to the interior on a forward side thereof and an aperture...
US-4,301,599 Lens previewer
A device is provided for previewing the field of view of an optical lens, for use in still, motion picture or video photography. The device includes a fixed...
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