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5017782 |
X-ray detector for radiographic imaging
A method and apparatus for enhancing the optical readout efficiency of a storage phosphor medium used for x-ray detection is disclosed. A photoemissive cathode strip is utilized to convert optical...
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5013902 |
Microdischarge image converter
A proximity focused direct view, microdischarge electro-optical converter for converting a target scene into an enhanced visible image, whereby an optical target scene impinging on the input...
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5003168 |
Trigger circuit for a streak camera sweep drive circuit
A trigger circuit for use in providing a trigger pulse to a sweep drive circuit in a streak camera. The trigger circuit comprises a low voltage DC power supply, a resistor, a charge line and a...
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4996414 |
X-ray image intensifier with electron optics coating
An x-ray image intensifier has an electrode system for focusing electrons, produced by the incidence of x-radiation on the input luminescent screen, onto the output luminescent screen. An electrode...
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4990766 |
Solid state electron amplifier
A microscopic voltage controlled field emission electron amplifier device consists of a dense array of field emission cathodes with individual cathode impedances employed to modulate and control...
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4988859 |
Optical waveform measuring device
An optical waveform measuring device, comprising an optical amplifier for amplifying a light beam under measurement and a photodetector to which a light beam amplified by the optical amplifier is...
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4978195 |
Optical-to-electric image conversion system employing a cathode-ray tube or the like
An apparatus for translating an optical image, as of a waveform, created by an electron beam device such as a cathode-ray tube into an electric signal. A fiber optics faceplate, having a...
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4975635 |
Voltage detector using a sampling type high-speed photodetector
A voltage detector for measuring the voltage waveform of an object being measured on the basis of the optical intensity signal corresponding to the voltage of the object, including a light source...
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4961278 |
Day/night telescopic sight
A telescopic sight assembly has formed therewith a rotatable or adjustable housing which housing includes an image intensifier tube and suitable optics to be used in conjunction with a conventional...
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4960987 |
X-ray image intensifier with conductive-coat electrodes on insulated metal sidewalls
An x-ray image intensifier for use in an x-ray diagnostic system has an electrode system for focusing electrons generated by incident x-radiation on an input luminescent screen onto an output...
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4960988 |
Safety shut-off protection system
A safety shut-off protection system is provided for a light responsive system such as video cameras, image intensifiers, thermal imagers, or the like. The light responsive system further includes...
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4959722 |
Image pickup device using a photo-to-photo conversion element
There is provided an image pickup device having a high resolution used for a movie camera, a still camera (shutter) camera) and the like. This image pickup divice includes a photo-to-photo...
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4958231 |
Electro-optical streak camera
An electro-optical streak camera including an amplifier for amplifying a light signal under measurement. The amplified light signal is applied to an electro-optical deflector of a photodector...
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4956548 |
Ultrafast oscilloscope
An oscilloscope constructed for use in real time resolving an ultrafast voltage signal includes a streak camera having a transmission line photocarthode, a constant light source for illuminating...
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4952793 |
Circuit for gating an image intensifier
The gating circuit includes a low voltage section and a high voltage section with a fast and a slow switch in the high voltage section for providing the gating pulses to the photocathode (PC) of...
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4952794 |
X-ray imaging system
As a result of the use of a slow phosphor in the exit screen of an X-ray image intensifier tube, a number of image fields can be picked up by means of the comparatively fast television camera...
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4948952 |
Electron tube for the detection, memorizing and selection of light images
The disclosure concerns the observations of very fast light phenomena. It is desired to temporarily store a series of images arriving at a fast rate (one every 10 nanoseconds) for a duration (one...
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4947031 |
Sampling streak tube with accelerating electrode plate having an opening
A sampling streak tube in which the signal-to-noise ratio is reduced. The tube includes a photocathode to which an incident light beam is applied and an accelerating electrode for accelerating an...
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4945223 |
X-ray image intensifier tube with circuit to compensate for the effects fo magnetic distortion
To compensate for the effects of magnetic distortion in an X-ray image intensifier tube, the mode of scanning the target of the television camera associated with this tube is modified. Shifts,...
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4945224 |
Optical waveform observing apparatus
Optical waveform observing apparatus including a sampling streak tube to which is applied an incident light beam having a waveform to be observed. An electron beam corresponding to the incident...
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4943711 |
Image intensifier tube with input screen having a profile which satisfies a higher degree polynomial
In an image intensifier tube the input screen has a profile which is determined by a higher degree polynomial of which the constant term and the first order term are both zero. As a result of this...
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4937442 |
Protective shutter
A fast acting electromagnetically operated shutter for protecting an imag system from damaging light, such as intense laser light, comprised of a plurality of vane type shutters driven by...
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RE33241 |
Device for measuring extremely diminished intensity of light
A device for measuring an extremely diminished intensity of light by superposing a plurality of streaking images of the light beams caused by fluorescence occurring in a phosphor layer where...
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4935817 |
Dual mode all - light level television camera
An apparatus for automatically controlling the photocathode of an image intensifier employed as a high speed shutter in a television camera utilizes the video signals established by the camera to...
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4935616 |
Range imaging laser radar
A laser source is operated continuously and modulated periodically (typicy sinusoidally). A receiver imposes another periodic modulation on the received optical signal, the modulated signal being...
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4931693 |
Ion bombardment barrier layer for a vacuum tube
An ionic bombardment barrier layer is provided for vacuum tube, said layer being formed of a stable compound of nitrogen and silicon. It is deposited by vapor phase chemical reaction activated by...
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4926039 |
Streaking or framing image tube with plural grid control
A streaking or framing image tube includes a photocathode (4), three grid electrodes (1, 2 and 3), a focus electrode (5) and an anode (6) disposed successively along the image tube. The tube is...
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4924080 |
Electromagnetic interference protection for image intensifier tube
An image intensifier tube having an electromagnetic interference protection arrangement. The protection is accomplished by shielding the tube and filtering the power supply. Shielding is performed...
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4922092 |
High sensitivity optical imaging apparatus
Apparatus wherein an image intensifier (16) is interposed between a plurality of emission sites (10) from which emanate photons and a photo-detector (20) coupled to the output of the image...
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4920386 |
High spatial and time resolution measuring apparatus
A high spatial and time resolution measuring apparatus for optically measuring a fine area in an object to be measured, the apparatus comprising a stage for mounting a specimen thereon, a light...
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4916543 |
Circular scan streak tube with electronic memory and readout
A circular scan streak tube system for recording fast optical data includes a target having a first array of detection elements and a second array of corresponding storage elements. Changes in the...
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4914296 |
Infrared converter
An infrared converter for converting an image of infrared radiation into a visible image or an electrical signal. The infrared converter includes a sensitive element array upon which the infrared...
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RE33183 |
Image intensifiers and method of producing same
A shielded faceplate for use in an image intensifier having a photocathode which comprises an inner core of glass transparent to light to which the photocathode is sensitive and an outer shielding...
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4909628 |
Optical heterodyne detector
An optical heterodyne detector comprising means for causing two light beams to interfere with each other and producing interference light beams thereof, a streak camera for receiving the...
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4905312 |
Image logic operation device
An image logic operation device for performing logic operations on images, the device comprising a first image unit for storing a first light image and sending out the light image or the reverse...
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4902135 |
Object movement measuring apparatus
In an object movement measuring apparatus, a movement monitor detects the movement of an object under measurement to output a signal in synchronization with the movement, and the signal thus...
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4902930 |
Electron image projector
An electron image projector for transferring mask patterns onto a semiconductor wafer comprises a patterned photo-emissive cathode mask (1) and a target (3) such as a semiconductor wafer (11)...
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4897730 |
Image pickup device with index signal generator
An image pickup device comprises an image pickup tube and an index generator having a light shield box; a light emitting diode held in the light shield box; a stripe screen provided on the...
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4893020 |
X-ray fluorescent image intensifier
An X-ray fluorescent image intensifier is disclosed, which comprises an input screen for converting an incident X-ray image into photoelectrons, electrodes for accelerating and focusing...
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4891507 |
Apparatus for extending the infrared response of photocathodes
An efficient energy upconversion unit is optically coupled to a photocathode. The upconversion unit receives incident infrared electromagnetic energy of longer wavelengths and emits, in response,...
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4891581 |
Apparatus for sampling, analyzing and displaying an electrical signal
An apparatus for sampling, analyzing and displaying an electrical signal as disclosed having a good signal-to-noise ratio and high resolution. The apparatus includes a light pulse source for...
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4882480 |
Apparatus for detecting the position of incidence of particle beams including a microchannel plate having a strip conductor with combed teeth
An apparatus is provided for detecting the one-dimensional position of incidence of particle beams. The apparatus comprises a microchannel plate having a portion that forms a strip conductor for...
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4882481 |
Automatic brightness control for image intensifiers
The microchannel plate current of a microchannel plate image intensifier is sensed to generate a pulse train applied to the image intensifier photocathode for gating the image intensifier on and...
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4880965 |
X-ray image intensifier having variable-size fluorescent crystals
An X-ray image intensifier includes a vacuum envelope having an input window for receiving X-rays, an input fluorescent screen for converting X-rays received through the input window into light, a...
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4870473 |
X-ray image intensifier having a support ring that prevents implosion
This invention relates to an X-ray image intensifier for intensifying and reproducing an image of an object, by use of X-ray and the like. An evacuated envelope of the image intensifier is...
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4870350 |
Electrical signal observing device
An electrical signal measuring device for measuring with high time resolution a relatively long optical phenomenon representing the electrical signal. A linear array of laser diodes is provided...
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4862006 |
Method of fabrication of an x-ray image intensifier and an x-ray image intensifier thus obtained
Before being introduced within the intensifier, the grid which is nearest the anode is coated with a layer of electrically conductive material having the property of oxidizing alkali metals. This...
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4861977 |
Elongated X-ray detector tube
The housing of an elongated proximity-focus image intensifier comprises at least two elongated parts. The parts have in cross-section such dimensions and such a configuration that the housing is...
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4857748 |
Apparatus for optically measuring the three-dimensional surface shape and inner structure of an object
An apparatus for optically measuring a three-dimensional surface shape and inner structure of a three-dimensional object without destruction of the object. When a light pulse having a short pulse...
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4857724 |
Picture pick-up and display system and picture pick-up device suitable for said system
Between an image intensifier (II) having a circular radiation exit surface (II2) and an image sensor in the form of a solid state sensor (CTD) with a rectangular picture pick-up surface (PP) there...
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