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| Number | Title | Issue Date |
| 8129911 | Magnetron A magnetron has an anode 3 surrounding a tubular hollow cathode 4 which contains a heater 9. The cathode is supported by radial arms at each end. At one end of the cathode, the heater is supplied with one terminal of its D.C. supply by means of ... | 03/06/2012 |
| 8054363 | Determining the multiplication of EMCCD sensor A method and device having a CCD in which charge multiplication is obtained by applying drive voltages to clocking elements and is arranged to derive the gain provided by the multiplication elements from at least first and second output signals. The CCD is operated ... | 11/08/2011 |
| 8049171 | Variable aperture sensor A sensor device of the type for sensing incident radiation by charge generation, has a substrate within which charge may be generated by incident radiation. A plurality of electrodes are arranged to cover an image area of the substrate and are selectively connectabl... | 11/01/2011 |
| 8040067 | Magnetron with cathode decoupled from output A magnetron including a cathode, an anode axially aligned with the cathode and including a plurality of radial vanes defining resonant cavities, an output coupler connected to a first set of the vanes, a second set of vanes not connected to the output coupler, and e... | 10/18/2011 |
| 8018160 | Magnetron having a feature for collecting material lost from a cathode thereof A magnetron has a cathode, an anode with vanes, and an insulating surface which faces the cathode and receives material from the cathode due to sputtering at the cathode. A conductor enables the resistance of the film so deposited to be measured, giving an indicatio... | 09/13/2011 |
| 8004579 | Gain measurement structure A CCD Device of the type for providing charge gain by impact ionisation has a multiplication register. Gain provided by a subset of the elements of the multiplication register are independently controllable from other elements in the register. This enables the regis... | 08/23/2011 |
| 7923630 | Sealed and cooled enclosure with voltage isolation An enclosure (4) for electrical apparatus (6) has a sealable outlet (8) for partially evacuating the enclosure and a sealable inlet (9)for partially filling the enclosure with a liquid (7) having a vapor pressure at operating tempe... | 04/12/2011 |
| 7807952 | Gain calibration in EMCCD cameras A CCD device of the type which provides gain by impact ionisation in a multiplication register includes an arrangement for production of a first output signal derived from a known input with multiplication applied and a second output signal derived from a different ... | 10/05/2010 |
| 7755056 | Sensor with trigger pixels for imaging of pulsed radiation A radiation sensor 10 includes an array of imaging pixels 13 electrically connectable to a readout port. At least one first peripheral row of trigger pixels 11 is located at a first edge of the array, the trigger pixels also being electrically c... | 07/13/2010 |
| 7586264 | Collector cooling arrangement A cooling arrangement for an electron collector of an electron beam tube has a plurality of solid dielectric spacers surrounding the corrector with an electrically insulative and thermally conductive dielectric liquid in gaps between the spacers. A water cooling sys... | 09/08/2009 |
| 7579779 | Pivotable magnetic assembly for allowing insertion or removal of a linear beam tube An electron beam tube device has a magnetic frame with the top part being pivotable so as to pivot from a closed position in which the top part, including an electromagnetic coil covers the electron beam tube to an open position in which the electron beam tube is un... | 08/25/2009 |
| 7566876 | Image sensor Effective sensitivity of a photodetector of an image sensor is controlled by partitioning signal charge from incident photons, thus producing a manageable yield and a consequently higher, photon shot noise limited, signal to noise ratio than in the prior art, when i... | 07/28/2009 |
| 7498584 | Radiation sensor An energy selective radiation sensor has a photodetector and a transfer gate for controlling transfer of charge from the photodetector to a first sense node. A first readout circuit is provided for reading out charge from the first node. In use a first charge accumu... | 03/03/2009 |
| 7488942 | Gas sensors A gas sensor of the type having a housing defining a chamber within which light is transmitted from a source to a detector through an optical path, includes internal mirror portions having part ellipsoidal shape. Light is transmitted from a source to a detector via ... | 02/10/2009 |
| 7420605 | Solid state imager arrangements A solid state imager arrangement includes an image area, an output register which receives signal charge from the image area, a separate multiplication register into which signal charge from the output register is transferred, means for obtaining signal charge multi... | 09/02/2008 |
| 7420171 | Gas sensors A gas sensor comprises a body on which is mounted an optical source and a detector means sensitive to light from the source. The body further comprises a channel arranged to admit gas, the channel comprising an elongated groove having reflective surfaces defining a ... | 09/02/2008 |
| 7291821 | CCD device having a sequence of electrodes for charge multiplication A CCD device includes multiplication elements arranged so as to multiply charge by clocking with a high voltage. An additional region beneath the high voltage electrode is so doped in relation to at least the preceding electrode as to have a higher depleted charge d... | 11/06/2007 |
| 7230385 | Collector arrangement A collector for an electron beam tube comprises a plurality of electrode stages. The electrode stages are spaced from one another by a non-conductive spacer. The non-conductive spacer is located between portions of electrodes and extends into the collector on a firs... | 06/12/2007 |
| 7221558 | Galvanically isolated delivery of power to high voltage circuits parts A high voltage switching apparatus delivers kV pulses to a load such as a magnetron. The switching apparatus comprises a switching stack surrounded by capacitors and both arranged within a housing. Lt power is supplied to the stack, e.g. for control electronics, by ... | 05/22/2007 |
| 7211817 | X-ray sensor An x-ray sensor 60 includes a phosphorescent phosphor 601 susceptible to x-ray irradiation 12 for forming an image in the phosphor, the phosphor having a decay period 71 persistent after an irradiation period 75. A photoelectric se... | 05/01/2007 |
| 7187130 | Electron beam tubes including a vacuum envelope seal and having a metallized balance ring A linear electron beam tube comprises an electron gun having a cathode and a grid, and an anode arranged in a first portion of a drift tube. The drift tube is within a vacuum envelope and has first and second portions separated by a gap at which point an electron be... | 03/06/2007 |
| 7173229 | Solid state imager A charge division arrangement for a CCD device for producing a divided charge output from an input charge, comprising an input for receiving an input charge, an array of elements and an output. The array of elements being arranged in rows and columns and having cloc... | 02/06/2007 |
| 7067779 | Magnetron arrangement A magnetron arrangement has a coaxial output terminating in a probe which launches energy from the magnetron along a rectangular waveguide. The coaxial output is arranged in an endfire configuration with respect to the waveguide, giving a compact arrangement compare... | 06/27/2006 |
| 7064782 | Cameras A camera comprises a sensor such as a CCD or ICCD for receiving radiation representative of a scene, a filter such as an arrangement of parallel neutral density stripes, arranged to attenuate the radiation reaching the sensor, and decoding electronics such as comb f... | 06/20/2006 |
| 7026761 | Magnetrons A magnetron includes a decoupling plate located between the end hat of the magnetron cathode and an output coupling member. The use of the decoupling plate presents a high impedance and gives a resonant circuit which is arranged to be resonant at the operating frequ... | 04/11/2006 |
| 6937119 | High frequency apparatus A tuning door is fabricated for a resonant cavity of a high frequency apparatus. Contact fingers are formed around the edge of a conductive plate. The plate is then fixed to a support by, for example, double sided adhesive tape. The conductive plate is part of the i... | 08/30/2005 |
| 6815897 | Magnetrons having a coaxial line output with unwanted mode energy reduction A magnetron has an output comprising a coaxial line 15 which transmits energy from a wanted oscillator mode as a first coaxial waveguide mode and energy from an unwanted oscillator mode as a second cylindrical waveguide mode. Energy in the cylindrical wavegui... | 11/09/2004 |
