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3813489 |
LOW LIGHT TELEVISION CAMERA
The phosphor screen of an image intensifier fiber-optically coupled to the target of a television camera tube is connected to a point in the video amplifier which provides a signal to decouple the...
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3809889 |
IMAGE INTENSIFIER COMPENSATED FOR EARTH'S MAGNETIC FIELD
The earth's magnetic field influences the electrons emitted from the photocathode of a radiation image intensifier tube such that the optical image formed on the output screen of the tube is often...
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3805058 |
RADIATION SENSITIVE TRANSDUCER
A radiation sensitive transducer combining a photocathode and a lateral photoelectric detector to increase the sensitivity and gain, said transducer being operable in several different modes and...
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3803407 |
NIGHT VIEWING POCKET SCOPE
An electro-optic pocket scope that provides a highly intensified image of low light level scenes being viewed therethrough. The pocket scope is similar to a simple telescope in that an optical...
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3798453 |
MULTICHANNEL DIGITAL PHOTOMETER
Apparatus for detecting a weak photon image is disclosed comprised of a magnetically focused image tube having a photocathode at one end, to transform a photon image into an electron image, spaced...
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3792259 |
ELECTRO-OPTIC DEVICE COMPRISING AN OPTIC IMAGE RELAY AND METHOD OF MANUFACTURING SAME
An electro-optical device including a writing beam, a reading beam and an optic relay comprising a plate of a material having double refraction. According to the invention, a direct voltage is...
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3790840 |
SECONDARY ELECTRON MULTIPLYING DEVICE USING SEMICONDUCTOR CERAMIC
A secondary electron multiplying device having high sensitivity for various kinds of electrically charged particles (e.g. electrons, positive ions, negative ions), X-rays, radio active rays, etc.,...
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3787688 |
LOW LIGHT LEVEL, UNDERWATER, VIEWING DEVICE
An underwater viewing system is described which provides enhanced viewing means of an image intensification tube. The unit is binocular and permits wide angle direct viewing as well as the more...
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3784831 |
ELECTROOPTICAL SYSTEM
A direct view infrared monitoring system including a storage tube having a storage mesh with a photoconductive storage surface thereon sensitive only to infrared radiation, the tube having a...
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3784830 |
IMAGE MAGNIFIER
An image magnifier and intensifier has a vacuum flask upon one end of which lies a photo-cathode. The image-producing ray bundle releases at its surface electrons depending upon the intensity...
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3783299 |
X-RAY IMAGE INTENSIFIER INPUT PHOSPHOR SCREEN AND METHOD OF MANUFACTURE THEREOF
The surface of a waffle-like metal substrate forms an array of cells for the support for the input phosphor screen of an x-ray image intensifier tube. The hollow projecting walls of the metal...
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3781469 |
OPTIC RELAY FOR SCANNING BY MEANS OF A LIGHT BEAM
An optic relay comprising a double refracting crystalline plate which can be varied by the Pockels effect, the signal being applied between two transparent layers. According to the invention the...
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3781560 |
NIGHT VIEWING SYSTEM FOR READING WITHOUT LIGHT
A night viewing system is provided for rendering visible proximate objects located in a totally darkened environment without the use of visible light, the system thus permitting one to read in bed...
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3777201 |
LIGHT AMPLIFIER TUBE HAVING AN ION AND LOW ENERGY ELECTRON TRAPPING MEANS
A light amplification device such as an image intensifier or low level sensing device is disclosed which includes a photocathode spaced from an aluminized target electrode and a microchannel plate...
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3774031 |
GAMMA CAMERA WITH INCREASED RESOLUTION
Apparatus for use in investigating the distribution of radiation from an extended source consists of a multi-channel collimator which is so mounted as to be movable in a plane substantially at...
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3774038 |
IMAGING DEVICE COMPRISING AN IMAGE-INTENSIFYING TUBE
The luminescent screen collecting the photo-electrons of an imaging device is provided with a cover layer that decelerates the electrons so that luminescence occurs only if the photo-electrons have...
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3774124 |
INCOHERENT TO COHERENT IMAGE CONVERTER
An incoherent to coherent image conversion system comprises a converter unit having an axially aligned photocathode and electro-optic crystal, a source of coherent light (laser) directed through...
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3772562 |
PHOSPHOR SCREEN ASSEMBLY
An image intensifier tube including a source of electrons, an electron amplifier and a phosphor screen assembly, the tube including connecting a source of electrical potential across the electron...
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3769059 |
X-RAY AND GAMMA-RAY SCINTILLATORS AND DETECTOR SCREENS INCORPORATING SAME
An X-ray or gamma-ray scintillator comprising, on a substrate, an alkaline halide layer of fibrous structure having the needle form, with the needles perpendicular to the surface of the substrate,...
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3769633 |
RAINDROP IMAGE RECORDING ANALYZER SYSTEM
A method and apparatus is disclosed for measuring the density size, shape d distribution of rain, snow, hail, sleet and the like in the atmosphere. A preferred embodiment of the apparatus utilizes...
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3767961 |
ARRANGEMENTS INCLUDING IMAGE INTENSIFIER DEVICES
An image intensifier arrangement is operated in a manner which allows observance of preselected events which occur during the occurrence of other events which may mask them. Normally the first...
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3758778 |
SURFACE IMAGING EXOELECTRON MICROSCOPE
An electron microscope employing the principles of exoelectron emission and induced photoemission is described. Surface variations which are microscopically and optically undetectable can be...
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3749920 |
SYSTEM FOR X-RAY IMAGE INTENSIFICATION
This invention relates to a system of X-ray image intensification characterized by the use of an image intensifier provided with a novel electron multiplying membrane which produces a very high...
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3748523 |
BROAD SPECTRAL RESPONSE PICKUP TUBE
A broad spectral response pickup tube incorporating a photoemissive cathode responsive to a first range of wavelengths of radiation with proximity focusing providing for the electron emission from...
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3742285 |
IMAGE INTENSIFIER DISPLAY SYSTEM
This invention relates to the art of imgge intensifier display systems including an electronic image intensifier display tube having a fiber optic input window with an electron emitting surface and...
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3742224 |
LIGHT AMPLIFIER DEVICE HAVING AN ION AND LOW ENERGY ELECTRON TRAPPING MEANS
A light amplification device such as an image intensifier or low level sensing device is disclosed which includes a photocathode spaced from an aluminized target electrode and a microchannel plate...
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3739178 |
AUTOMATIC BRIGHT SOURCE PROTECTION CIRCUIT AND POWER SUPPLY CIRCUIT FOR AN IMAGE INTENSIFIER
A clamping circuit between the cathode and the input electrode of a microchannel plate clamps the cathode operational voltage within the stable region of the cathode current-voltage...
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3737667 |
ELECTRO-OPTICAL VIEWING DEVICE
An image intensifier tube and power supply elements are rigidly mounted and axially disposed within a housing to form an integral unit. The image intensifier includes a photocathode at one end,...
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3735139 |
PHOTO DETECTOR SYSTEM WITH DUAL MODE CAPABILITY
A photo detector system is described which has dual modes of operation under both dim and bright illumination conditions. Optics image incoming illumination directly upon an array of semiconductor...
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3735140 |
LOW LIGHT LEVEL LASER IMAGING SYSTEM
A low light level imaging system having an image intensifier which utilizes semiconductive material. A photoemissive material emits spatially modulated electrons in response to a detected image to...
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3733492 |
GATEABLE IMAGE INTENSIFIER TUBE
An image intensifier tube comprising an elongated envelope having therein axially spaced electrodes including a gateable photocathode located adjacent an input faceplate at one end of the envelope...
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3732428 |
ELECTRO-OPTICAL IMAGE COMPOSITE DISPLAY
Electro-optical display system for providing a composite display of an optical image wherein a first image provided by means of a cathode ray display device is superpositioned onto a second image...
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3719823 |
RADIO-ISOTOPE CAMERAS USING VACUUM TUBES WITH FIBEROPTIC ENDWALLS AND LUMINISCENT MEANS OF FIBEROPTIC CONSTRUCTION
This invention relates to cameras for visualization of internal organs and their pathology by means of radio-isotopes. The new devices are characterized by the novel combination of an image...
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3716714 |
X-RAY IMAGE TUBE HAVING AN OXIDIZED VANADIUM BARRIER INTERPOSED BETWEEN THE SCINTILLATOR AND PHOTOCATHODE
An X-ray image tube is disclosed having a glass barrier comprising oxidized vanadium interposed between the tube scintillator and photocathode.
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3716713 |
INPUT SCREEN FOR IMAGE DEVICES HAVING REDUCED SENSITIVITY IN THE CENTAL REGION
Image device input screen having greater image conversion efficiency in the peripheral region of the screen than in the central region. Preferred embodiments include, separately or in combination,...
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3715620 |
COMPENSATION DEVICE FOR NON-LINEAR ELECTROMAGNETIC SYSTEMS
Apparatus is disclosed which compensates for non-linear responses of electromagnetic systems which apparatus includes a hysteresis simulator. The simulator samples an input signal to the system and...
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3715583 |
SURFACE IMAGING UTILIZING EXOELECTRON EMISSION
A system for obtaining an image of a surface by utilizing exoelectron emission is described. Surface characteristics such as homogeneity, microscopic flaws and discontinuities in the work function...
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3714439 |
IMAGE COMPARISON DEVICE AND METHOD
Separate simultaneously occurring radiation images are transformed by a storage electrode and a photoelectric cathode respectively into a charge image and an electron beam which are superimposed...
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3711720 |
AUTOMATIC BRIGHTNESS CONTROL FOR IMAGE INTENSIFIER TUBE
A circuit for operating an image intensifier tube wherein the voltages for the individual intensifier stages are supplied by a voltage multiplier arrangement. The invention includes circuitry to...
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3710126 |
RESOLUTION ENHANCEMENT OF IMAGE INTENSIFICATION SYSTEMS
An image intensification system utilizing an image intensifier having a channel type electron multiplier. The light input to the intensifier is oscillated vertically up and down by an electrically...
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3710125 |
SECONDARY EMISSION ENHANCER FOR AN X-RAY IMAGE INTENSIFIER
The number of electrons emitted from a metal surface that is being bombarded by x-rays is increased by utilizing a secondary electron emission process within an insulator, potassium chloride (KCl),...
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3706885 |
PHOTOCATHODE-PHOSPHOR IMAGING SYSTEM FOR X-RAY CAMERA TUBES
An improved system for emission of electrons in response to x-rays comprises a phosphor layer separated from a photocathode layer by a light transparent barrier layer which protects the phosphors...
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3700947 |
INCREASED SENSITIVITY PHOTOCATHODE STRUCTURE
A photocathode substrate includes a plurality of prisms to refract radiation before it impinges upon a photocathode material. The refraction causes most of the radiation to meet the photocathode...
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3697795 |
IMAGE INTENSIFIER TUBE HAVING A MULTI-RADIUS PHOTOCATHODE
An image intensifier tube including a multi-radius photocathode having less curvature adjacent its periphery than in the central portion thereof.
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3694659 |
AUTOMATIC CONTROL CIRCUIT FOR IMAGE INTENSIFIER
An automatic brightness control circuit for an image intensifier tube includes direct current limiting means for limiting the output of an oscillator which provides alternating current to a voltage...
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3693018 |
X-RAY IMAGE INTENSIFIER TUBES HAVING THE PHOTO-CATHODE FORMED DIRECTLY ON THE PICK-UP SCREEN
The present invention relates in general to x-ray image intensifier tubes and, more particularly, to an improved intensifier tube wherein the photo-cathode is formed directly on the x-ray sensitive...
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3693017 |
POWER SUPPLY FOR IMAGE CONVERTER
A viewing apparatus which includes an image converter tube having a cathode and a phosphorous screen for visual observation is powered by a pair of piezoelectric converters circuityly arranged with...
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3688122 |
AN ELECTROSTATIC FOCUSED ELECTRON IMAGE DEVICE
An electron image device having an electron optical system including a photocathode element capable of converting a radiation image into an electron image. The electron image generated by said...
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3684354 |
IMAGE GATE
An image gate is used for selectively directing the optical image from an X-ray image intensifier tube to cameras located on the sides of and in line with the optical image path. The image gate has...
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3683185 |
RADIATION IMAGING APPARATUS
An image intensifier type of gamma ray scintillation camera employing a relatively thick scintillation crystal at the input end for good efficiency in converting gamma rays into scintillations and...
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