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Searching: photography





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Patent # Description
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...
US-4,447,896 Method of and apparatus for combined optical and sonar detection and recording of objects
This disclosure is concerned with problems of energy conservation and more effective utilization at desired critical times only in, for example, sonar-triggered...
US-4,446,506 Photographic light diffuser
A uniquely configured, constructed photographic light diffuser device for association with a photographic light source, which is versatile in that it is easily...
US-4,445,771 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-4,444,866 Photographic light-sensitive material with forced oxidized carbon black
Photographic light-sensitive materials particularly useful in connection with instant photography are disclosed. The disclosed photographic materials include...
US-4,441,799 Camera with a lens protective cover
A camera with a lens protective cover includes switching means which turns a power supply of an electronic flash on to establish a flash photography mode for the...
US-4,441,774 Flash device of a camera
A flash device for photography includes a DC/DC converter for boosting a DC power source voltage and applying a voltage to a main capacitor for supplying an...
US-4,437,734 Lenses capable of close-up photography
A lens system comprises a converging first lens group, a diverging second lens group and a converging third lens group arranged in this order as viewed from the...
US-4,437,117 X-ray television installation for monitor photography
An exemplary embodiment comprises an x-ray tube, an x-ray image intensifier, a television camera, a photographic camera, and a monitor system, which includes a...
US-4,435,057 Exposure control device for cameras
A camera capable of AE-lock photography wherein an output of a light measuring circuit is stored in response to a manual operation at an arbitrary time prior to...
US-4,432,624 Delay timer for a camera
A relatively inexpensive electronic delay timer particularly suitable for portable use in such applications as control of a camera shutter. The timer can be used...
US-4,428,030 Modular light-diffusing or reflecting plastic panel
This modular light-diffusing or reflecting plastic panel, notably for photography, motion-picture and television, comprises a cut panel (1), of semi-rigid...
US-4,427,278 Flash photography system and electronic flash device for use in the system
A flash photography system includes an electronic flash device capable of light measurement for automatic flash light control and a camera capable of automatic...
US-4,425,033 Camera employing a flash illumination device and a flash photographing system
An interchangeable-lens camera is usable with a flash unit which stops the flash on the basis of the object distance and transmits a signal corresponding to a...
US-4,423,470 Lens barrel suitable for flash photography
In a lens barrel to which a flashlight-emitting device is mounted or may be mounted and which enables a very proximate object to be photographed, there is...
US-4,422,742 Photographing mode switching device for a camera
A photographing mode switching device for a camera includes a position detecting member associated with a mode switching member and a mounting detecting member...
US-4,420,515 Metallization process for protecting documents of value
A process for preventing the counterfeiting of valuable documents through use of photography, photocopying techniques, or other methods of counterfeiting. The...
US-4,417,791 Process for composite photography
A reverse blue screen process for travelling matte cinematography, which comprises the formation of travelling mattes by pre-coating models or other foreground...
US-4,417,399 Device for the calculation of the characteristics of rectilinear geometric shapes
Device for the calculation of the geometrical characteristics of rectangles for the framing of various objects, usable especially in photography, architecture,...
US-4,412,346 X-Ray photography apparatus
In an X-ray photography apparatus of this invention, an X-ray tube and an image receiving device are attached to two tilting members which are each rockably...
US-4,410,247 Motion picture camera
A three-motion picture camera is equipped with a shutter opening angle adjusting device capable of changing the opening angle of a shutter including a plurality...
US-4,410,157 Photography stand system
A photography stand system is disclosed assembled from elongate support members into either a tripod or framework structure. The elongate support members form...
US-4,409,646 Multiple-effect light source, especially usable as a projector for photography, motion pictures and television...
A light source usable as a projector for photography, motion pictures, television, or as a light panel, or as a lighting apparatus. This light source comprises a...
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