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Searching: photography





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Patent # Description
US-4,676,625 Strobe re-actuating device
The present patent application discloses a reactuating device for a strobe having brightness level detecting apparatus for detecting the brightness level of an...
US-RE32,437 Light measuring device for flash photography
The disclosure is directed to an improved light measuring device which is used in flash photography for measuring a preliminary flash light to obtain camera...
US-4,669,850 Flash photographic exposure control system
An exposure control system for daylight and flash photography. In the flash mode with computer flash light device, the system accommodates for a variation in the...
US-4,668,048 Thermal insulation for heat sensitive lens elements
A long focal length or telephoto lens for photographic purposes has an optical element with a high coefficient of thermal expansion, and special features to...
US-RE32,425 Exposure control system for flash photography
A flash photographic exposure control system for a camera having an electrically timed shutter is provided with an additional electronic or mechanical timing...
US-4,666,271 Process and apparatus for the subtitling and/or the trick photography of cinematographic films using...
The present invention consists of registering, selecting and counting the N images of a cinematographic film (C1) to be subtitled; the composition of the said...
US-4,665,002 Liquid developer for electrostatic photography
Disclosed is a liquid electrophotographic developer comprising a resin prepared by polymerizing selected monomers to provide a developer composition having good...
US-4,664,998 Electrophotographic image forming member having hydrogenated amorphous photoconductive layer including carbon
An image-forming member for electro-photography has a photoconductive layer comprising a hydrogenated amorphous semiconductor composed of silicon and/or...
US-4,662,733 Methods and apparatus for medical photography
This invention provides a method of obtaining increased efficiency in implementing a medical photograph by allowing the practitioner to utilize a slower speed...
US-4,661,438 Quaternized tellurium salt fog inhibiting agents for silver halide photography
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by quaternized aromatic oxatellurazinium salts. The aromatic...
US-4,658,286 Method and apparatus for correcting distortions in reproducing systems
A method and apparatus for defining a plurality of subcategories of the information content of the input to a reproduction system and generating a set of signals...
US-4,656,115 Emulsion polymerization of methacrylonitrile in the presence of a cationic emulsifier as a vehicle for...
An improved vesicular matrix prepared by the emulsion polymerization of methacrylonitrile, either alone or with a small amount of comonomer, in the presence of a...
US-4,655,576 Light measuring device
A light measuring device for use in flash photography, which measures preliminary flash light and ambient light to obtain camera exposure information under a...
US-4,654,291 Emulsion polymerization of methacrylonitrile as vehicle for vesicular photography and method of making and...
An improved vesicular matrix prepared by employing regulated inner incompatibility to produce enhanced nucleation. The inner incompatibility is produced by...
US-4,650,305 Camera mounting apparatus
Disclosed herein is camera mounting apparatus which is particularly useful for independently adjusting the interocular spacing and convergence distance between...
US-4,648,697 Adapter for tripods
An adaptor for tripods which can be used for close up photography, low angle photography, and for supporting cameras or lights. The adaptor has first and second...
US-4,647,176 External display device for camera
An external display device for displaying photographic information of varied kinds for a camera uses a numerical display part for selectively displaying...
US-4,646,335 Apparatus for X-ray photography of the area of the dentition and of the jaws
An apparatus for panoramic X-ray photography of the area of the dentition and the jaws, comprising a frame part, a bearing part linearly movable in relation to...
US-4,639,107 Acquiring measurements of an object by means of photography
The dimensions of an object are acquired photographically under utilization of a measuring raster, to be imaged in addition to a projected horizontal line...
US-4,636,067 Photography pin board system
An improved pin board system for use within a vacuum contact frame includes a two piece pin board arrangement with an elastomeric gasket sheet. The primary pin...
US-4,634,253 Underwater photographable camera
A camera of waterproof construction permitting underwater photography includes focusing means for adjustment of the focal point of a photo-taking lens and...
US-4,630,911 Camera gun
A simulated firearm to be used in conjunction with a camera which includes features which are realistic to actual firearms but which can be used instead for...
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...
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