Abstract:
The invention relates to a particle beam system (PBS) comprising a particle guiding tube, one or more transversely movable electrodes (of a defined type) providing a transverse electric and/or magnetic field (pulse or linear) wherein a particle flow can be influenced by the electrodes which can further have a defined shape. The PBS can be provided with a protective film and/or an insulation, it can form a mono and/or stereo particle path. The PBC can provide a cross-sectionally shaped beam, an adjustable optical axis, a rotating electric and/or magnetic field, a circularly polarized beam. The PBS can form an array, it can comprise one or more connections, one or more modules. The PBC can be coupled with electro- and/or mechanocomponents. The PBC can form lenses configured in a separate eye ray configuration. A method for providing a particle beam and a digitizer of photographic or X-ray images are proposed.
Abstract:
A photocathode assembly of a vacuum photoelectronic device with a semi-transparent photocathode that consists of an input window in the form of a disk made from sapphire, layers of heteroepitaxial structure of gallium nitride compounds as a semi-transparent photocathode grown on the inner surface of the input window, and an element for connecting the input window with a vacuum photoelectronic device housing, which is vacuum-tight fixed on the outer surface of the input window at its periphery. The element for connecting of the input window with the vacuum photoelectronic device housing is made of a bimetal, in which a layer that is not in contact with the outer surface of the input window consists of a material with a temperature coefficient of linear expansion that differs from the temperature coefficient of linear expansion of sapphire by no more than 10% in the temperature range from 20° C. to 200° C.
Abstract:
A mounting system for night vision tubes includes a multi-part sleeve that opens in the manner of a clamshell to receive the tube. The sleeve includes a longitudinal seam or a partial longitudinal seam and opens around compliant hinge regions. The night vision tube engages a ramp section of the sleeve, urging the sleeve to open and then abuts against a front shoulder, causing the sleeve to clamp shut around the night vision tube. The tube is constrained between the front shoulder and a retaining shoulder. An indexing pin engages the night vision tube and the sleeve to maintain mutual rotational alignment. The sleeve and the tube are inserted into a housing of a night vision system.
Abstract:
A photocathode is formed on a monocrystalline silicon substrate having opposing illuminated (top) and output (bottom) surfaces. To prevent oxidation of the silicon, a thin (e.g., 1-5 nm) boron layer is disposed directly on the output surface using a process that minimizes oxidation and defects. An optional second boron layer is formed on the illuminated (top) surface, and an optional anti-reflective material layer is formed on the second boron layer to enhance entry of photons into the silicon substrate. An optional external potential is generated between the opposing illuminated (top) and output (bottom) surfaces. The photocathode forms part of novel electron-bombarded charge-coupled device (EBCCD) sensors and inspection systems.
Abstract:
An annular ceramic washer has inner and outer cylindrical surfaces, first and second annular surfaces, and a winding path thick film resistor located on the inner surface. Metal washers are preferably brazed to the end ring surfaces. The annular ceramic washer is useful in vacuum tube applications in establishing a voltage on a target utilizing the voltage of an electrode coupled to the winding path thick film resistor.
Abstract:
A photon sensing and amplification device including a photocathode, a transparent electrode opposed from the photocathode, and a plasma chamber positioned between the photocathode and the transparent electrode, wherein the plasma chamber houses an ionizable gas.
Abstract:
A chromium oxide film is formed so as to continuously connect an anode and a grid electrode, and an insulating member for insulating those electrodes. A chromium oxide film is formed so as to continuously connect a grid electrode and a grid electrode, and an insulating member for insulating those electrodes. With use of the chromium oxide films, no intermittent discharge phenomenon occurs between the insulating member and the anode, and between the insulating member and the grid electrodes.
Abstract:
A method and apparatus of obtaining a record of repetitive optical or other phenomena having durations in the picosecond range, comprising a circular scan electron tube to receive light pulses and convert them to electron images consisting with fast nanosecond electronic signals, a continuous wave light or other particle pulses, e.g. electron picosecond pulses, and a synchronizing mechanism arranged to synchronize the deflection of the electron image (images) in the tube (tubes) with the repetition rate of the incident pulse train. There is also provided a method and apparatus for digitization of a repetitive and random optical waveform with a bandwidth higher than 10 GHz.
Abstract:
Disclosed is a power supply (40) and a night vision device using the power supply (40). The power supply (40) comprises a battery (41), a power switch (42), a booster (43) for boosting a battery voltage provided by the battery (41) to an established voltage according to an operation of the power switch (42) and outputting a boost voltage, and a voltage selector (44) for comparing the voltage provided by the battery with a reference voltage (VR), outputting the boost voltage when the battery voltage is below the reference voltage (VR), and outputting the battery voltage when the battery voltage is beyond the reference voltage (VR). The night vision device is operable by voltages supplied from the power supply (40). According to the invention, stable voltages are supplied and batteries (41) are effectively used by supplying constant voltages in the case of using batteries (41) with different voltages, and hence, usage time of the night vision device is increased.
Abstract:
An image sensor cell (100) is presented for use in an imaging device, for example of a night vision type. The image sensor cell (100) comprises an electrodes' assembly and a control unit (118). The electrodes' assembly is configured and operable to receive an input light signal and produce a corresponding electrical signal. The electrodes' assembly comprises a photocathode (112) having an active region capable of emitting electrons in response to incident light; and at least one electrode (114, 116) in a path of electrons emitted from the photocathode (112). The control unit (118) is configured and operable for controlling an electric field profile in said path so as to selectively cause the electrons' capture on said at least one electrode (114,116) resulting in accumulation of charge on said at least one electrode (114,116) corresponding to the input electromagnetic signal indicative of an acquired image, thereby enabling direct reading of the accumulated charge. The image sensor cell (100) thus provides for direct conversion of a light signal into an electric signal indicative thereof.