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Searching: photography





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Patent # Description
US-4,494,864 Apparatus for stereoscopic photography
An apparatus and method of producing a parallax stereogram, i.e., free vision stereogram, and particularly for the accurate registration of a plurality of film...
US-4,494,851 Display unit for flashlight photography
In a flashlight emission system, apparatus for lighting a flash tube to illuminate an object and for controlling the quantity of emitted light from the flash...
US-4,494,850 Flash photographing system
The disclosed flash photography system operates in a first mode by controlling the flash on the basis of the distance information signals, and in a second mode...
US-4,494,828 Zoom lens system of relatively high zoom ratio ranging to wide angle photography
A zoom lens system of a relatively high zoom ratio ranging from a telephoto to a wide field angle is provided. The zoom lens system comprises from the object to...
US-4,493,098 X-Ray collimator
The invention relates to a collimator employed in X-ray equipment, which collimator comprises three or more perforated collimator plates. The purpose of the...
US-4,491,405 Camera suitable for flash photography
The present invention has two photometric circuits, namely photointegrating circuits, one of them is for day light photography and other is for flash ...
US-4,491,404 Flash photography system
There is provided a flash photography system which allows control of a relation between a light emission duration of a flash device and a full-open time of an...
US-4,484,801 Panoramic lens
A panoramic lens grouping utilizes a number of negative and positive power enses to provide 360.degree. photography and projection capabilities. The lens grouping...
US-4,480,896 Optical filter suitable for portrait photography
An improved soft focus optical filter is provided and comprises a plurality of effective filter areas on a transparent substrate. The filter areas are designed...
US-4,480,893 Optical and viewing system for stereoscopic photography
A stereoscopic optical system for use in a camera to simultaneously photograph two separated views of a three-dimensional scene with lenticular type film and a...
US-4,478,928 Application of activated arylhydrazides to silver halide photography
The use of sulfinic acid radical substituted arylhydrazides in producing images in silver halide photographic elements is disclosed. The sulfinic acid radical...
US-4,478,639 Method for stereoscopic photography
An apparatus and method of producing a parallax stereogram, i.e., free vision stereogram, and particularly for the accurate registration of a plurality of film...
US-4,478,493 Apparatus having liquid crystal finder optical system
The disclosed apparatus includes a finder optical system with a liquid crystal display having a plurality of strips of transparent conductive material arranged...
US-4,477,554 Diffusion transfer material and process
A photographic material for diffusion transfer photography containing a quinonoid compound, which is capable in reduced state and under alkaline conditions of...
US-4,477,170 Annunciator for flash photographing system
A flash photography system including a computer type electronic flash device and a camera controlling the exposure value by using the light coming from an object...
US-4,475,801 Flashlight photography preparing device of a camera
In a camera provided with a flash unit, a device for limiting the preparatory operation for flashlight emission of said flash unit comprises metering means for...
US-4,475,798 Camera for stereoscopic photography
A photographic camera for providing a plurality of film images in order to produce a stereogram. The camera has a plurality of objectives which are independently...
US-4,475,146 Front lighting system for photography
A special front lighting system for use in a relatively narrow room in which a large track mounted camera photographs subjects held on a subject holder. A pair...
US-4,472,496 Process for preparing silver halide emulsion
There is disclosed a process for producing a silver halide emulsion comprising sulfur sensitizing a silver halide emulsion for photography containing a chloride...
US-4,471,969 Combination folding stool and dolly
A combination portable dolly and collapsible stool for transporting photography equipment and the like, and for providing an elevated platform for taking...
US-4,470,685 Intermediate adapter
Disclosed is an intermediate adapter to be used between the camera body and the photographing lens during close-up photography. A light beam splitter in the...
US-4,470,684 Energy efficient charging apparatus for an electronic flash
A camera having electronic flash apparatus for flash photography includes a rangefinder for measuring distance to a subject to be photographed, and circuitry for...
US-4,470,680 Water-proof photographic camera with an automatic focusing device
In a water-proof photographic camera with an automatic focusing device, a taking lens will be moved to a best-in-focus position by the automatic focusing device...
US-4,469,782 Coating method for having simultaneous separate extrudable multiple coatings with laterally spaced separators
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-4,469,419 Electronic flash device
In a flash photography system wherein an electronic flash is fired to illuminate an object to be photographed, a light measuring circuit measures the light...
US-4,468,693 Video printing apparatus
A video printing apparatus for forming color separation films and a color film recording an image of a video signal of a desired frame is disclosed. The video...
US-4,466,721 Time lapse programmer
A time lapse photography programmer is controlled by a microcomputer. A keyboard permits a user to enter exposure sequence, exposure duration, and exposure...
US-4,465,766 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-4,465,757 Recording material for color photography
Compounds of the formula I ##STR1## in which A, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are as defined in claim 1, are effective optical...
US-4,465,353 Electronic flash device
An electronic flash device including a main light part, a pre-emission light part, an illumination direction changing mechanism for changing the illumination...
US-4,464,780 Pediatric restraint for X-ray photography
Restraint apparatus is provided for immobilizing a pediatric patient during exposure of X-ray film, particularly in connection with chest examinations. The...
US-4,464,039 Charge completion detecting device for flash photography system
An electric signal of a level which corresponds to a required amount of flash light based on flash exposure conditions e.g. film sensitivity, aperture value and...
US-4,462,667 Control device for periodic flash photographing
A control device for periodic flash photographies is provided with an actuation timing setting circuit in which actuation timings of a camera are manually set...
US-4,460,779 Method for preparing 2-lower alkyl-substituted naphthoxazoles by way of non-toxic intermediates
The invention relates to a method for preparing 2-lower alkyl-substituted naphthoxazoles by way of non-toxic intermediates, and in particular relates to the...
US-4,459,347 Adsorbable arylhydrazides and applications thereof to silver halide photography
The use of oxythioamido substituted arylhydrazides in producing images in silver halide photographic elements is disclosed. The oxythioamido substituted...
US-4,459,005 Flash exposure control apparatus for a fixed-focus camera
A fixed-focus camera provides flash photography of normal-range subjects beyond a near distance which is limited by depth of field and flash overexposure. A...
US-4,458,175 Mosaic additive reflectance color display screen
The enhancement of the intrinsic viewing screen brightness of the Mosaic Additive system of color reproduction, sufficient for saturated reflectance color...
US-4,457,995 Liquid developer containing diphatic alcohol for electrostatic photography and development process using the same
A liquid developer for electrostatic photography and a method of using it is disclosed. The developer is comprised of toner particles dispersed in a higher...
US-4,457,611 Photographic system for use in flash photography with a camera
A photographic system for use in flash photography with a camera is disclosed. The system is constructed to emit a preliminary flash light of infrared light...
US-4,457,599 Composite photography apparatus and method
Apparatus and method is disclosed herein for producing a pair of identical images on the same piece of film except for the appearance of the background which...
US-4,456,358 Film holder apparatus for field and studio cameras
A film holder apparatus for field and studio cameras in which one or more sheets of film are maintained positively locked within a film holder frame in a crimped...
US-4,456,342 Zoom lens barrel capable of close up photography
A zoom lens barrel has a focusing operating member and a zooming operating member and a blocking member. When the blocking member is at a first position,...
US-4,455,067 Method of modifying slide transparencies so as to provide uniform illumination in angular projection
Photography, particularly, a method of modifying slide transparencies so as to eliminate distortion and to provide uniform illumination in oblique projection,...
US-4,452,513 Zoom lens capable of close range photography and method of focusing the same to a short distance
A zoom lens has, in succession from the object side, a first lens group as a convergent focusing group, a second lens group as a divergent magnification changing...
US-4,451,559 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-4,451,555 Antifogging compounds and their use in silver halide photography
The present invention deals with novel antifogging compounds and their use in a method of photographic reproduction comprising developing a photographic material...
US-4,449,804 Interval timer device
The present invention relates to an interval timer device for a camera, particularly an interval timer for producing a release signal for operating the shutter...
US-4,449,225 Method to be used in panoramic X-ray photography and an apparatus for carrying out the method
The invention relates to carrying out a pre-adjustment, before photographing is started, in panoramic X-ray photography using an X-ray device which performs a...
US-4,448,500 Telescope guider
Apparatus is disclosed for guiding a telescope during long-exposure astronomical photography. A reflecting prism or mirror is inserted into the peripheral...
US-4,448,495 Zoom lens system capable of very close range photography
A zoom lens system capable of very close range photography comprises, in succession from the object side a convergent first lens group stationary during zooming...
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