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4440476 |
Optical device for an intensifier tube
An optical device for an intensifier tube having an elongated housing with a cylindrical chamber extending therethrough, an intensifier tube in said chamber, first and second annular means in said...
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4433236 |
Automatic brightness control and warning circuit for image intensifier tube
In an automatic brightness control feedback loop for controlling the bias voltage of a microchannel plate of an image intensifier tube, there are provided a gas discharge tube and a photoconductor...
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4431914 |
Photoelectron switching in semiconductors in the picosecond time domain
Picosecond switching of electric current in response to optical signals is obtained by conversion of the optical signal, such as an optical pulse, into a photoelectron burst (a photoelectronic...
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4426721 |
X-ray intensifier detector system for x-ray electronic radiography
The apparatus of the invention includes a planer, proximity type x-ray image intensifier for detecting a fan beam of x-rays and for producing an intensified output visible light image on an output...
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4413178 |
Sweep drive circuit for a streak camera
An inexpensive, simple and highly accurate sweep drive circuit for streak cameras generates a ramp voltage for the deflection plates of an image converter tube of a streak camera. A solid state...
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4412128 |
Automatic brightness control circuit for a high voltage electrical power supply
A series regulated power supply arrangement for an image intensifier tube, comprises an oscillator circuit, a high voltage multiplier and an automatic brightness control (ABC) circuit. The ABC...
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4403140 |
Electron-beam shutter and shutter tube
An electron-beam shutter for use in an optoelectronic device that forms an image of a luminous event changing at high speed on a screen comprises a shutter plate and a ramp voltage source. The...
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4385232 |
Image intensifier devices
The invention provides an image intensifier arrangement in which for each stage either the luminescent screen or the photo cathode thereof is decoupled by resistive decoupling with respect to the...
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4383169 |
Luminescent screen devices
The aluminium-backed phosphor layer on the output window of conventional image intensifier tubes of the photoemissive/luminescent screen type can be seriously damaged by the extremely high energy...
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4376889 |
Low light level vision apparatus
Low light level or night vision apparatus, and particularly goggles, having an objective lens to focus incident light on to an image intensifier and a magnifier enabling an observer to view a...
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4374325 |
Image intensifier arrangement with an in situ formed output filter
An image intensifier device is provided with color filters on its input and output surfaces so as to intensify a color image without losing the color content. Each filter consists of an array of...
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4371806 |
Luminescent screen with grid structure for X-ray image intensifier
In the exemplary embodiments, the luminescent layer is applied to a carrier exhibiting a grid which is applied in the manner known per se in applying photo grids. Thereby, however, it is...
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4365150 |
Gain stabilized microchannel plates and MCP treatment method
Microchannel plates having increased gain and significantly improved aging characteristics are provided by forming a thin film of a cesium compound on the channel walls. In an exemplary embodiment,...
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4362933 |
Multistage vacuum x-ray image intensifier
In an examplary embodiment wherein the x-ray image, converted into an electron image, is intensified through acceleration in the electrical field, in at least two stages which are inter-coupled via...
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4355229 |
Intensified charge coupled image sensor having universal header assembly
An intensified charge coupled image sensor comprises an inverter image intensifier tube having an evacuated envelope with a longitudinally extending optical axis. The sensor has a photoemissive...
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4352127 |
Method and apparatus for analyzing streak image of light pulse formed on electro-optical streaking image tube
Using a conventional camera tube, a streak image of light pulse formed on a streaking image tube is converted into an electronic signal, progressively scanned, without interlaced scanning, using...
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4350919 |
Magnetically focused streak tube
A vacuum envelope having a longitudinal axis and a light input faceplate disposed coaxial of the axis and at one end of the tube includes therein coaxially of the axis adjacent the faceplate a...
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4346326 |
Radiological image intensifier tube and radiological chain incorporating such a tube
The invention relates to a radiological image intensifier tube with a video output. The tube has in the same vacuum envelope an image section and an analysis section having a common face occupied...
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4341955 |
Image intensifier of the proximity-focus type
An image intensifier of the proximity-focus type, comprising at least one photocathode and at least one anode screen located opposite to the photocathode, said photocathode and said anode screen...
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4339659 |
Image converter having serial arrangement of microchannel plate, input electrode, phosphor, and photocathode
Radiant energy images are converted into visual images or video signals by the image converter of the present invention. Input radiant energy images impinge upon a photocathode which is formed on a...
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4331898 |
Image intensifier with two-layer input window
In an image intensifier comprising an evacuated envelope which comprises a cylindrical vessel, an input window member airtightly sealed to one end of the vessel, and an output container formed at...
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4328418 |
Magnetic field correction method and apparatus
Method and apparatus in an x-ray image intensifier tube 22. The invention features an intensifier tube including a photo cathode 24 for generating photoelectrons and a screen 25 for receiving those...
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4327285 |
Electron-optical image tubes and streak cameras
A record is obtained of repetitive optical phenomena having durations in the picosecond or subpicosecond range by synchronizing the deflection of the electron image in an electron-optical streaking...
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4323811 |
Streaking image tube with closely spaced photocathode, suppressor mesh, and accelerator mesh
A streaking image tube having a suppression mesh electrode spaced between the normally provided accelerating mesh electrode and anode. Appropriate potentials are applied to the electrodes so that...
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4315184 |
Image tube
An improved image tube operable at higher voltage and gain with low noise levels wherein the electrodes include rolled end portions which extend away from the tube axis, and wherein all electrode...
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4304998 |
Panoramic dental X-ray machine employing image intensifying means
Panoramic dental X-ray machine includes a tubehead-camera assembly employing a suitable type image intensifier having a radiation input face of substantially similar shape and dimensions as a slot...
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4286148 |
Image intensifier tube with photocathode protective circuit
An image intensifier tube comprising a photocathode, and a channel plate having an entrance electrode on the surface of the channel plate and having an input electrode, integral with the entrance...
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4282427 |
Electrooptical camera for registering high-speed processes
An electrooptical camera comprises an image intensifier connected to a control system for gate and scanning, which system includes a serial arrangement of a trigger oscillator, a master oscillator...
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4272782 |
Method of and apparatus for adjusting an image intensifier chain
The light which is emitted from the output screen of an image intensifier and passed through a subsequent output objective, is converted into an electrical signal by means of a photomultiplier tube...
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4266848 |
Optical system for night-vision glasses
An optical system for night-vision glasses having a long focal length and a large image angle including an objective having a structural length less than 1.6f and an aperture ratio larger than 1.2,...
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4264811 |
Semiconductor image sensing device
A semiconductor image sensing device comprising a photoelectric conversion surface, a channel plate, means for applying an electron accelerating voltage across the channel plate, a collector...
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RE30596 |
Image intensifier tube device
An image intensifier tube device including a plurality of diode image intensifier tubes. Each tube comprises a sealed cylindrical envelope having its one end closed by an entry window carrying a...
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4255666 |
Two stage, panel type x-ray image intensifier tube
A panel shaped, proximity type, multi-stage x-ray image intensifier tube for medical x-ray diagnostic use having all linear components and yet a high brightness gain, the tube being comprised of a...
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4245160 |
Image-intensifier apparatus
An image intensifier apparatus which comprises an image intensifier for converting incoming radiation into light rays on an input fluorescent screen, further converting said light rays into...
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4243878 |
Ultra-fast framing camera tube
An electronic framing camera tube features focal plane image dissection and synchronized restoration of the dissected electron line images to form two-dimensional framed images. Ultra-fast framing...
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4241252 |
Flexible leaf contact system for night vision optical instruments
Disclosed is an electrical contact system for a night vision optical instrument having a cylindrical housing body intermediate an objective lens and an ocular. An intensifier tube is carried within...
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4239960 |
Recirculating light amplifier with optical feedback
A light amplification device utilizes a light intensification tube and optical feedback means for feeding back to the intensification tube for further intensification an image already intensified...
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4228356 |
Optimum contrast panoramic dental radiography and methods of providing therefor
Panoramic dental X-ray machine includes a tubehead-camera assembly which employs, in its simplest embodiment, three vertically stacked image intensifiers, the totality of their radiation input...
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4226529 |
Viewing systems
The invention relates to a pulsed laser viewing system adapted to view range intervals in a scene by gating the detector signal; according to the invention, the viewing system also includes a...
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4224511 |
Image intensifier
An image intensifier comprises an evacuated tube envelope which accommodates a serial arrangement of a photocathode, an accelerating electrode having a hollow cylinder in which an element with a...
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4221967 |
Gamma ray camera
An Anger gamma ray Camera is improved by the substitution of a gamma ray sensitive, proximity type image intensifier tube for the scintillator screen in the Anger camera, the image intensifier tube...
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4220890 |
Magnetic shielding for an X-ray image intensifier tube
An image-forming device, comprising an image intensifier tube, includes a magnetic shielding grid comprising a ferromagnetic material, which is arranged near the entrance screen of the image...
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4213055 |
Image intensifier tube
In order to achieve a strong and safe construction, the tube wall of an image intensifier tube is provided with at least two comparatively heavy supporting rings. On one of these rings a cup-shaped...
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4209691 |
Night vision system comprising a light source and image intensifier powered in alteration
A night vision system for use in an environment having at least one observer using artificial light means (lamp lit instruments, torch, etc.) and at least one observer using a light intensifying...
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4208577 |
X-ray tube having scintillator-photocathode segments aligned with phosphor segments of its display screen
An X-ray amplifier tube of the proximity design in which the scintillator screen, the photo-cathode screen and the output phosphor display screen are all segmented, with the segmentations of each...
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4204118 |
Apparatus for producing X-ray images by electrical charges
This invention relates to novel electronic devices for producing images such as of X-rays by means of electrical charges. The image the examined body or object is converted in a novel vacuum tube...
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4195222 |
Power-supply device for a microchannel tube
A power supply for a microchannel image tube. Microchannel plate voltage is controlled, to adjust tube gain, as an inverse function of screen current in an intermediate illumination range. In...
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4184069 |
Orthogonal array faceplate wafer tube display
Minature video-type display comprised of an otherwise normal microchannel ate (MCP) image intensifier wafer tube which uses, instead of the normal input faceplate having a uniform photocathode, a...
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4180725 |
Gating apparatus for static crossed field photomultipliers
Gating apparatus for a static crossed field photomultiplier utilizes a gating electrode which is mounted in a position between the cathode and the rail electrode. The gating electrode is pulsed...
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4173727 |
Electron image device
This invention relates to electron image devices for focusing an electron image derived from a photocathode element onto a target element with a substantially planar surface. More specifically, the...
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