| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315364000 | Cathode-ray deflections circuits | 8 |
| 20110018470 | ELECTRON GUN WITH MAGNETIC IMMERSION DOUBLE CONDENSER LENSES - An electron gun comprises an electron emitter, an electrode surrounding the electron emitter, an extraction electrode, and a double condenser lens assembly, the double condenser lens assembly comprising a magnetic immersion pre-condenser lens and a condenser lens. In combination with a probe forming objective lens, the electron gun apparatus can provide an electron beam of independently adjustable probe size and probe current, as is desirable in electron beam applications. The electron emitter is immersed in the magnetic field generated by a magnetic type pre-condenser lens. When activated, the pre-condenser lens collimates the beam effectively to increase its angular intensity while at the same time enlarging the virtual source as compared with non-immersion case, due to geometric magnification and aberrations of its lens action. The pre-condenser lens is followed by a condenser lens. If the condenser lens is of the magnetic type, its peak magnetic field is far enough away and thus its action does not significantly affect the size of the virtual source. Independent adjustment of the lenses, combined with suitable selection of final probe forming objective aperture size, allows various combination of the final probe size and probe current to be obtained in a range sufficient for most electron beam applications. | 01-27-2011 |
| 315370000 | With ray deflection distortion correction or reduction | 1 |
| 20110199027 | ELECTRON BEAM GENERATOR HAVING ADJUSTABLE BEAM WIDTH - The present invention relates to an electron beam generator with an adjustable beam width. Said electron beam generator comprises: a plasma generating chamber that generates and sustains plasma; an RF power-generating antenna disposed on the outer circumference of said plasma generating chamber; a primary grid mounted on the outlet of said plasma generating chamber; a secondary grid placed at a fixed distance away from said primary grid; a beam width controller comprising an inlet, an outlet and a hollow inside, wherein the inlet is located on the side of said secondary grid, and the electron particles introduced through said inlet form electron beams of a pre-set beam width and are discharged through said outlet; and an RF shield ring disposed to surround the outer circumference of the inlet of said beam width controller. In the electron beam generator of the present invention, the electron particles discharged from said plasma generating chamber are delivered in the form of electron beams of a preset beam width to the outlet of said beam width controller. | 08-18-2011 |
| 315379000 | With additional control of cathode ray | 5 |
| 20100171446 | ELECTRON BEAM DIRECTED ENERGY DEVICE AND METHODS OF USING SAME - A method and apparatus is disclosed for an electron beam directed energy device. The device consists of an electron gun with one or more electron beams. The device includes one or more accelerating plates with holes aligned for beam passage. The plates may be flat or preferably shaped to direct each electron beam to exit the electron gun at a predetermined orientation. In one preferred application, the device is located in outer space with individual beams that are directed to focus at a distant target to be used to impact and destroy missiles. The aimings of the separate beams are designed to overcome Coulomb repulsion. A method is also presented for directing the beams to a target considering the variable terrestrial magnetic field. In another preferred application, the electron beam is directed into the ground to produce a subsurface x-ray source to locate and/or destroy buried or otherwise hidden objects including explosive devices. | 07-08-2010 |
| 20100320942 | Electron gun used in particle beam device - An electron gun used in a particle beam device, for example in an electron microscope, has a relatively good brightness and may be operated under vacuum conditions which can be easily achieved (i.e., for example, at a residual pressure of about 10 | 12-23-2010 |
| 20110241575 | PIERCE GUN AND METHOD OF CONTROLLING THEREOF - A system and method for controlling the temperature of both an electron emitter and a filament to their lowest possible operating temperature is disclosed. The apparatus includes a filament, an electron emitter heated by the filament to generate an electron beam, and a power supply configured to supply power to each of the filament and the electron emitter. The apparatus also includes a control system to control a supply of power to each of the filament and the electron emitter, with the control system being configured to receive an input indicative of a desired electron emitter operating temperature, cause a desired voltage to be applied between the electron emitter and the filament, and cause a desired voltage to be applied to the filament based on the desired emitter element operating temperature, so as to minimize an operating temperature of the electron emitter and the filament. | 10-06-2011 |
| 315382000 | With focusing of ray | 1 |
| 20110062898 | DUAL ELEMENT SWITCHED ELECTRON GUN - The invention provides an apparatus and method of switching more than one bias voltage within an electron beam tube in order to achieve electron beam cutoff. The invention is particularly useful for high-perveance electron tubes in which a large change in focus-electrode-to-cathode or anode-cathode voltage might otherwise be needed to achieve cutoff. In one embodiment of the invention, the cathode and anode bias voltages are both switched by magnitudes well within the capabilities of standard high-voltage switches to achieve beam cutoff. | 03-17-2011 |
| 315383000 | Intensity control of ray | 1 |
| 20090140670 | Light beam control system for a spatial light modulator - According to one embodiment of the disclosure, a light beam control system includes a positive intrinsic negative diode coupled to a controller circuit. The positive intrinsic negative diode receives a portion of a light beam generated by a light source and converts the portion into a measured intensity. The controller circuit receives the measured intensity, determines an output signal according to the measured intensity and a reference, and adjusts the light beam according to the output signal. | 06-04-2009 |
| 315395000 | Plural potentials or currents applied to deflection member | 1 |
| 20110215741 | Discharge lamp lighting apparatus and discharge lamp lighting method - A discharge lamp lighting apparatus and a discharge lamp lighting method, wherein the discharge lamp, that may be lighted in a horizontal arrangement, contains a power source apparatus that lights the discharge lamp, a flex supply unit disposed near the discharge lamp, and a control unit configured to control the flex supply unit. The control unit controls the flex supply unit such that the flex pulls an arc perpendicular to the discharge lamp longitudinal direction at a time of start-up voltage impression. A flux whose density is lower than that at the time of start-up voltage impression is supplied when the discharge lamp reaches a stable state. | 09-08-2011 |
