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Searching: photography





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Patent # Description
US-4,009,041 Fogged, direct-positive silver halide emulsion containing a gallium sulfide semiconductor
The present invention relates to photography and, more particularly, to a novel radiation recording photographic element which comprises a direct positive...
US-4,007,487 Electronic composite photography with color control
Improved electronic compositing procedures and apparatus are described, ed typically on the blue screen process and suitable for processing motion pictures of...
US-4,007,466 Electrical system having a photoelectric converter to be used in photography
An electrical system to be used for photographic purposes. The electrical system has an input circuit for providing a given input signal as well as an output...
US-4,006,487 Photomicrographic illuminator
An illumination system for photomicrography includes direction of the light for illumination of the object through a fiber optic, the exit end of which replaces...
US-4,006,150 Alkylsulfonyl methyl-substituted pyridine N-oxides
This invention is concerned with pyridine N-oxides substituted in the ortho and/or para position with an alkylsulfonylmethyl group which find utility in...
US-4,005,444 Exposure control system for flash photography
A photographic flash exposure control system for a camera associated with a flash device. In conformance with a preselected shutter interval, an effective...
US-4,003,744 Photographic products with photosensitive layers of same spectral sensitivity and different speed
The present invention relates to photography and, more particularly, to diffusion transfer process photographic film units which comprise a photosensitive...
US-4,003,068 Extension tube for use in close-up photography
An extension tube inserted between a single lens reflex camera body and an interchangeable objective lens barrel to extend the photographable range intrinsic to...
US-4,002,313 Aircraft conformal load carrying pallet
A form-fitting or conformal load carrying pallet for aircraft to improve the load carrying capacity of aircraft where the load may be fuel, electronic gear,...
US-3,999,991 Thioindioxyl azo dye developer for diffusion transfer process
A dye developer for silver halide photography comprising both a dye moiety represented by the following general formula (I): ##STR1## wherein R represents a...
US-3,999,990 Imaging by light-enhanced vaporization
An imaging method involves a substrate having a coating which undergoes a photochemical conversion upon being irradiated to yield only products whose vapor...
US-3,999,195 Camera adjustable exposure control adapter
An adjustable exposure control adapter for cameras is described which includes a light producing source, such as a LED, which is mountable in juxtaposition to a...
US-3,996,215 Styryl and butadienyl sulfa dye and process of producing the dye
A styryl and butadienyl dye suitable as a filter dye or antihalation dye for photography having the formula ##STR1## wherein R represents a lower alkyl...
US-3,994,573 High aperture catoptric system
A catoptric system adapted for X-ray fluoroscopic photography comprises a spherical concave reflector disposed to reflect fluorescence light coming from the...
US-3,994,572 Varifocal lens system with macro-photography capabilities
A macro-photography varifocal lens assembly is provided for attachment to a camera body. The lens assembly can include a first lens group of negative refractive...
US-3,994,558 Binocular microscope with improved monocular photographic and measuring capability using movable objective
The main objective of the microscope is shifted from the stereoscopic viewing position to a position in which its optic axis coincides with the optic axis of one...
US-3,994,007 Automatic flash photography apparatus
The disclosed automatic flash photography apparatus operates with a camera having a shutter in which a diaphragm blade serves as a shutter blade, and the...
US-3,993,560 Method and apparatus for monitoring cellular activities
A method and means are provided for observing and recording by time lapse photography the growth of cells such as cancer cells outside the human body while...
US-3,992,084 Zoom lens system also capable of ultra-closeup photography
A zoom lens system which is also capable of ultra-closeup photography comprises in succession, as viewed from the object side of the lens system, a focusing lens...
US-3,990,785 Anamorphic zoom lens
The present invention relates to an anamorphic zoom lens of rear system intended for photography or projection, which, seen from the object, consists of an...
US-3,990,087 3-Dimensional camera
This invention relates to a reflex camera device having a single lens for the photography of right and left images from an object space transmitted as first and...
US-3,986,877 Development promoting compounds for silver halide photography
A method is described for developing silver halide emulsions wherein development is activated by incorporating in the developing composition or the emulsion a...
US-3,985,425 Polarizing beam splitting unit
The polarizing beam splitting unit comprises a filter in the form of a layer of polarizing material which passes light in only one plane. This polarizing layer...
US-3,982,947 Fog-inhibitors for silver halide photography silver halide photographic material containing an iodo benzene...
Photographic silver halide materials are described which comprise as antifogging agent a compound of the formula: ##SPC1## Wherein: X is a hydroxy or carboxy...
US-RE28,956 Latent image photographic system
This invention relates to compositions which are sensitive to light and suitable for photography and photographic reproduction purposes. More particularly, the...
US-3,978,496 Automatic flash-photographing arrangement
An automatic flash-photographing arrangement whereby flash-photography is automatically carried out at a preset shutter speed when brightness of an object is...
US-3,976,647 N-(lower alkyl sulfonyl-methyl sulfonyl)-piperazines
This application is directed to compounds of the formula ##EQU1## wherein R.sup.1 is lower alkyl; R.sup.2 is hydrogen, lower alkyl or ##EQU2## wherein...
US-3,976,489 Silver halide photographic products with semiconductor sensitizers
The present invention relates to photography and, more particularly, to a novel radiation recording photographic diffusion transfer process film unit which...
US-3,975,423 Alkylthioalkyl-substituted alkylsulfonylacetonitriles
This application is directed to compounds of the formula ##EQU1## wherein R.sup.1 and R.sup.2 each represent lower alkyl and m is a whole number 2 to 5,...
US-3,974,509 Automatic exposure control circuit for a camera
An automatic exposure control circuit for a camera or the like includes a memory circuit comprising a series connection of a capacitor and an impedance element...
US-3,972,716 Color electrophotography using encoded multicolor information
A system for electrostatic photography using a camera having an aperture formed in one side for imaging light onto a photoconductive insulating layer positioned...
US-3,971,954 Ultraviolet camera system for dental photography and mouthpieces therefor
A source of ultra violet light is directed onto the teeth of a patient via a mouthpiece which engages the gums above and below the tooth lines. A camera is...
US-3,966,475 Photographic silver halide emulsions containing acylacetanilide color couplers
Novel yellow forming color couplers for use in silver halide color photography are described which correspond to the formula: wherein R represents alkyl or phenyl, X...
US-3,964,080 Electromagnetic trigger device in a camera capable of effecting time photography
In an electromagnetic trigger device in a camera capable of effecting time photography, and having a trigger switch, a power source and a motor for driving a...
US-3,963,968 Intervalometer apparatus
A timing and actuating assembly for a camera to permit time lapse photography includes a solenoid operated shutter release mechanism which is actuated by an...
US-3,963,497 X-ray film with hydrophillic layer containing developing and fixing agents
This invention relates to x-ray photography and more specifically to a film sensitive to x-rays wherein both developing and fixing chemicals are contained within...
US-3,961,342 Remote control photographic apparatus
Remote control apparatus for cameras having an automatic exposure control circuit and a mechanaism for operating the shutter and advancing the film in the camera...
US-3,960,737 Negatively charged liquid developer for use in electrostatic photography
Negatively charged liquid developers for use in electrostatic photography which comprises a highly insulating carrier liquid and, dispersed therein, a toner...
US-3,960,558 Dye free, spectrally sensitive silver halide layers in diffusion transfer films
The present invention relates to photography, particularly, to photographic products specifically adapted for employment in specified photographic diffusion...
US-3,960,557 Polydispersed silver halide emulsions with iodide for use in diffusion transfer
The present invention relates to photography and, more particularly, to diffusion transfer process photographic film units which comprise a photosensitive...
US-3,959,803 Instantaneous photography camera
Disclosed herein is an improved instantaneous photography camera for use in the manufacture of photographic identification cards. The camera is of the type in...
US-3,958,992 1,3-Disulfonylcycloalkanes as silver halide solvents
1,3-disulfonylcycloalkanes substituted in the 2-position with at least one hydrogen atom are employed as silver halide complexing agents in both conventional and...
US-3,957,513 Method of free radical photography utilizing a short light flash for exposure
Novel method of free radical photography in which a colored image excellent in photographic properties such as gradient, resolving power, image stability, amount...
US-3,954,853 Substituted phenoxy-3-chloro-malealdehydic acids
Tanning (hardening) agents in a colloid layer of gelatin or the like are inactive at ordinary temperatures but are activated at temperatures above 70.degree.C....
US-3,953,869 Stereoscopic photography apparatus
In the illustrative embodiments of the invention disclosed, autostereoscopic pictures are produced by taking a series of two-dimensional views of an object field...
US-3,953,303 Process for the manufacture of mesh screen for X-ray photography sensitization
A process for the manufacture of mesh screen for the sensitization of X-ray photography which comprises forming a heavy metal layer and a sensitive polymer layer...
US-3,953,135 Curve analysis method in color photography
A method of approximating the characteristic curves of a color film exposed at a variety of color temperatures is provided. The method involves the use of a linear...
US-3,952,190 Underwater strobe flash unit
A method of waterproofing a strobe flash unit for use in underwater photography. A mold is formed and a strobe flash unit is mounted within the mold. Epoxy resin...
US-3,950,776 Ski position simulator
A ski position simulator for use in photography and the like to enable a subject to assume and maintain position like that of a jumping skier has an elevated...
US-3,947,861 Film frame counting devices for still cameras
A counting device in a still camera for indicating the exact number of frames of long-footage film exposed during regular photography includes a numerical...
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