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Searching: photography





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Patent # Description
US-4,629,682 Recording material for color photography
Recording material for color photography which contains in at least one photosensitive silver halide emulsion layer, one intermediate layer and/or one protective...
US-4,629,298 Flux projector for use with composite photography
The present invention provides a projector having particular application for use in front projection composite photographic systems. In particular, the present...
US-4,627,697 Background projection system for photography
A Fresnel lens or mirror is disposed between a worktable upon which an object can be placed and a background-image generator for a photographic apparatus whose...
US-4,624,550 Method and apparatus for photographing surfaces of solid objects
A system for photographing circumferential surfaces of revolution of solid objects such as core samples is of a type in which an object is rotated so as to...
US-4,621,909 Photographic lens of a great aperture ratio
A photographic lens of a great aperture ratio comprises, in succession from the object side, a first unit having a positive refractive power, a second unit...
US-4,619,507 Methods and apparati for generating optical mattes
The invention pertains to the art of photography and provides a method of making the optical mattes that are used in making composite photographs. The method...
US-4,618,558 Liquid developer for use in electrostatic photography
A liquid developer for use in electrostatic photography which comprises further containing wax in toner particles consisting essentially of a colorant and a...
US-4,618,557 Liquid developer for electrostatic photography
An liquid developer for electrostatic photography is described, comprising a carrier liquid having an electric resistance of at least 10.sup.9 ...
US-4,615,601 Exposure control apparatus of a camera
An automatic exposure control apparatus for a camera has the shutter release button and the memory shutter release button as switches with slidable contacts, a...
US-4,615,599 Flash photographing system
A flash device for a photographic camera is arranged either to inhibit a flashing action or to shift the control mode of the camera from flash photography to...
US-4,609,619 Light-sensitive silver halide color photographic material
A light-sensitive silver halide color photographic material, which comprises a cyan coupler for photography represented by the formula [IA] or [IB] shown below...
US-4,609,269 Wide-angle/telephotography convertible camera with electronic flash
A camera can be converted between use for wide-angle photography and telephotography, by inserting a conversion lens into or removing the conversion lens from...
US-4,608,522 Electronic flash device
An electronic flash device fires one or a pair of flash tubes sequentially for continuous shooting photography with a motor driven photographic camera, for...
US-4,607,001 Divalent chalcogenide fog inhibiting agents for silver halide photography
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by aromatic tellurochalcogenides. The aromatic ...
US-4,607,000 Amido substituted divalent chalcogenide fog inhibiting agents for silver halide photography
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by amido substituted aromatic tellurochalcogenides. The amido...
US-4,603,954 Synchronizing device for flash photography
The object distance from a range finder is factored into the guide number of the strobe to obtain an aperture value in binary form by a decoder. As the size of...
US-4,602,277 Permanent color correction process using a sampling and an average color determination and a system using this...
A color correction process applicable to video photography and a system using this process. A digital processing member receives image sample signals from a...
US-4,601,565 Camera adapter device
An adapter device for mounting a standard 33 mm camera on a copy camera of the type having an open back over which a film holder is normally mounted so that the...
US-4,599,657 Image pick-up device
Disclosed is an image pick-up device which uses a charge transfer type solid state image pick-up device, and a shutter so as to form a high quality picture...
US-4,595,267 Method of sending and receiving signals in photography with camera and camera flash device for that method
This invention relates to a method of sending and receiving signals when taking photographs with flash by exchanging information obtained on the camera side and...
US-4,594,608 TV-photography system for surgical microscope
A TV-photography system for a surgical microscope, said system being constructed in such a manner that an optical path, which extends from an objective lens to...
US-4,593,312 Emission controller for electronic flash associated with an electronic camera
An emission controller for an electronic flash associated with an electronic camera including a solid state pickup element is provided. In response to the...
US-4,589,124 X-ray film holder for patient in wheelchair
A portable X-ray film cassette holder for a wheelchair is disclosed whereby the patient can remain stationed in the wheelchair and need not be removed therefrom...
US-4,586,802 Camera capable of special effects photography
A camera for making photographs with special effects comprising a photographic optical system having a path of light for forming an object image on an image...
US-4,582,413 Indicating apparatus for a camera
The present invention relates to a camera capable of both bulb and self-timer photography. The feature of the present invention is that the indicating mode for...
US-4,581,330 Tellurium salt fog inhibiting agents for silver halide photography
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by aromatic oxatellurazinium salts. The aromatic ...
US-4,579,803 Liquid developer for electrostatic photography
A liquid developer for electrostatic photography is described, containing, (i) a toner containing a resin as a main component and (ii) a copolymer comprising two...
US-4,578,348 Hydrolyzed azolium speed enhancing/fog-inhibiting agents for silver halide photography
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by hydrolyzed quaternized chalcogenazolium salts of middle...
US-4,576,470 Enlarger for use in photography
An enlarger for use in photography capable of printing a color copy from a color original film includes a light source for generating a plurality of primary...
US-4,576,463 Developing apparatus for electrostatic photography
A toner charging member to which a toner is conveyed and supplied is located in the vicinity of a photoconductive element which is to carry an electrostatic...
US-4,575,225 Color enlarger
A color enlarger for use in photography capable of printing a color copy from a color original film includes a plurality of source lights for separately...
US-4,575,218 Developing apparatus for electrostatic photography
A toner charging member to which a toner is conveyed and supplied is located in the vicinity of a photoconductive element which is to carry an electrostatic...
US-4,572,640 Photographing operation control device for camera
The present invention relates to a camera having an automatic focusing device, particularly designed so that the shutter release operation is carried out only...
US-4,570,205 Strobe apparatus
A lower part of a reflection mirror is cut away to admit light flooding downwards in a special photographing situation, for instance, close-up photography, by...
US-4,569,580 Flash photographing system
A flash device for a photographic camera either inhibits a flashing action or shifts the control mode of the camera from flash photography to daylight...
US-4,568,778 Process for producing tert-amylphenols
A process for producing tert-amylphenols is described, comprising reacting isoamylene with phenols in the presence of an inorganic solid acid catalyst or an...
US-4,568,752 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-4,565,731 Image-forming member for electrophotography
An image-forming member for electro-photography has a photoconductive layer comprising a hydrogenated amorphous semiconductor composed of silicon and/or...
US-4,563,705 Automatic focus controlling apparatus and method
In order to effect an automatic focus control in an image pick-up apparatus, a photography lens for forming an image of the object onto a two-dimensional solid...
US-4,563,627 Switching system for high voltage battery pack
There is disclosed herein a rechargeable battery pack for use with electronic devices, such as electronic flash units used in photography, and wherein the...
US-4,558,939 Flash photography system
A flash photography system for a photographic camera and a flash device adapted to be connected thereto with the camera providing an aperture value output for...
US-4,557,570 Camera assembly for three-dimensional photography
A camera assembly is provided for photographing a scene or subject from two slightly different positions with controlled three-dimensional effects for subsequent...
US-4,554,460 Photodetector automatic adaptive sensitivity system
A photodetector system for generating a series of digital value signals indicative of light intensity and particularly adapted for use in computer enhancement of...
US-4,554,244 Silver halide photosensitive materials for color photography
There is disclosed a silver halide photosensitive material for color photography which comprises a phenol type cyan coupler having the formula: ##STR1## ...
US-4,552,444 Synthesis color photographic map and method of making same
A synthesis color photographic map, on a predetermined scale, covering a wide geographic area. It is formed of a number of color photographic base maps each...
US-4,550,996 Flash photography system
A flash photography system using a first aperture value output calculated from a desired diaphragm aperture value for flash light photographing with data...
US-4,548,470 Projection screen
An improved projection screen is provided having particular application for use in front projection composite photography. A substrate screen backing is provided...
US-4,548,468 Load-bearing rear-projection screen
The invention pertains in general to the art of motion-picture photography and in particular to rear-projection "process" photography, providing a rigid...
US-4,547,057 Flash photographic apparatus
In a flash photography apparatus of the type determining an aperture for flash photography based on an integrated value of the reflected light quantity received...
US-4,545,666 Light emission blocking device of a camera capable of effecting flashlight photography
A camera usable with a flash unit and having a roll film loaded in the camera housing thereof comprises release means operable by an operator for photographing...
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