Discharge Device Load With Distributed Parameter-type Transmission Line (e.g., Wave-guide, Coaxial Cable) Patents (Class 315/39)
  • Publication number: 20090009087
    Abstract: A plasma lamp for an electrodeless plasma lamp having a waveguide body. The non-radiative thermal losses from the bulb are controlled to prevent the bulb from melting while providing a high level of radiation from the bulb. The thermal conductivity of the waveguide, configuration of the heat sink and size and placement of the bulb may be selected to provide a brightness of more than 80 lumens per watt and a total brightness of more than 12,000 lumens at a power level of 150 watts.
    Type: Application
    Filed: October 27, 2006
    Publication date: January 8, 2009
    Inventors: Frederick M. Espiau, Marc DeVincentis, Yian Chang, Frederick M. Espiau, Anthony D. McGettigan
  • Patent number: 7462978
    Abstract: An apparatus (10) for generating ultraviolet radiation includes a pair of magnetrons (12) coupled to a longitudinally extending microwave chamber (14) for generating standing microwave energy waves within the chamber (14). Microwave energy from the magnetrons (12) is directly coupled to the microwave chamber (14) without the use of coupling slots, antennas or other coupling structures. A longitudinally extending electrodeless plasma bulb (20) is mounted within the microwave chamber (14) and is operable to emit ultraviolet radiation (24) in response to excitation by the microwave energy generated by the pair of magnetrons (12). The microwave chamber (14) includes a pair of longitudinally extending tuning walls (42) positioned on opposite sides of the plasma lamp bulb (20) and capable of overlapping the standing microwave energy waves generally along the longitudinal length of the plasma bulb (20).
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: December 9, 2008
    Assignee: Nordson Corporation
    Inventors: James W. Schmitkons, James M. Borsuk
  • Patent number: 7459855
    Abstract: The invention relates to a microwave tube comprising an electron gun generating an electron beam in a cylindrical microwave structure of the tube. The microwave structure delivers a microwave at one output. A collector for collecting electrons from the beam comprising at least one electrode that is mechanically coupled to the microwave structure via a dielectric, the mechanical coupling forming a radial waveguide for propagating spurious microwave radiation (Pr) from the tube. In order to attenuate the spurious radiation from the tube, the radial waveguide (Wg) includes at least one quarter-wave microwave trap having, at least at the operating frequency F of the tube, an open circuit for the microwave propagating in said radial waveguide for propagating spurious radiation.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: December 2, 2008
    Assignee: Thales
    Inventors: Claude Bearzatto, Jean-Luc Piquet, Daniel Plard
  • Publication number: 20080265778
    Abstract: A bipolar pulse forming transmission line module and system for linear induction accelerators having first, second, third, and fourth planar conductors which form a sequentially arranged interleaved stack having opposing first and second ends, with dielectric layers between the conductors. The first and second planar conductors are connected to each other at the first end, and the first and fourth planar conductors are connected to each other at the second end via a shorting plate. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short at the first end a high voltage from the third planar conductor to the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.
    Type: Application
    Filed: June 17, 2008
    Publication date: October 30, 2008
    Inventor: Mark A. Rhodes
  • Publication number: 20080258627
    Abstract: A plasma lamp is described with resonant frequency tuning capability and associated methods for tuning. One tuning method allows plasma lamp manufacturer to set the frequency of lamps to several discrete predetermined values. For example, most lamps that are near the center of a frequency distribution can be tuned to a nominal value such as 918.7 MHz. Other frequencies can also be tuned to increase manufacturing yield and improve lamp performance.
    Type: Application
    Filed: February 7, 2008
    Publication date: October 23, 2008
    Inventors: Marc DeVincentis, Sandeep Mudunuri
  • Patent number: 7439677
    Abstract: A microwave generator having a central electrode (14) which at the front end has a radiating element (22) and an external electrode (18) which coaxially surrounds the central electrode (14) along an axially extending resonator portion (16), wherein the two electrodes (14 and 18) are of a rotationally symmetrical configuration and define a spark gap (62) which sparks across when a high voltage is applied and radiates microwaves by way of the resonator portion (16) and the radiating element (22) of the central electrode (14). The spark gap (62) is in the form of an annular spark gap, which is determined by a connection element (26) which projects at the rear end axially centrally away from the central electrode (14) and an annular edge (44) of the external electrode (18), the edge being provided coaxially with respect to the connection element (26). The central electrode (14) and the external electrode (18) are arranged in a housing sleeve (12) of an electrically insulating material.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: October 21, 2008
    Assignee: Diehl BGT Defence GmbH & Co., KG
    Inventors: Josef Dommer, Geoffrey Staines
  • Patent number: 7397173
    Abstract: A lighting apparatus using microwave energy comprises, a magnetron disposed inside a casing, for generating microwave energy; a waveguide for guiding microwave energy; a resonator providing a resonant region in which the microwave energy is resonated; a bulb disposed inside the resonator, and filled with a material which emits light, when excited by the microwave energy; and a rear mirror integrally fixed to a rear of the bulb, for forwardly reflecting light which is rearward emitted from the bulb.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: July 8, 2008
    Assignee: LG Electronics Inc.
    Inventor: Byoung-Ok Min
  • Patent number: 7391158
    Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: June 24, 2008
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Patent number: 7372209
    Abstract: A plasma lamp including a waveguide body including at least one dielectric material with a dielectric constant greater than approximately 2. The body is coupled to a microwave source which causes the body to resonate in at least one resonant mode. At least one lamp chamber integrated with the body contains a bulb with a fill forming a light-emitting plasma when the chamber receives power from the resonating body. A bulb either is self-enclosed or an envelope sealed by a window or lens covering the chamber aperture. Embodiments disclosed include lamps having a drive probe and a feedback probe, and lamps having a drive probe, feedback probe and start probe, which minimize power reflected from the body back to the source both before each plasma is formed and after it reaches steady state.
    Type: Grant
    Filed: December 11, 2004
    Date of Patent: May 13, 2008
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Yian Chang
  • Patent number: 7362054
    Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 22, 2008
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Patent number: 7362055
    Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 22, 2008
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Patent number: 7362056
    Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 22, 2008
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Patent number: 7358678
    Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 15, 2008
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Patent number: 7348732
    Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: March 25, 2008
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Publication number: 20080067940
    Abstract: A device for coupling an input signal to an output signal includes a metal transmission line; an ultra-small resonant receiver structure operatively connected to an end of the transmission line constructed and adapted receive the input signal and to cause at least part of the input signal to be passed along the transmission line in the form of plasmons; an ultra-small resonant transmitter structure operatively connected to another end of the transmission line and constructed and adapted to receive at least some of the plasmons corresponding to the input signal on the transmission line and to transmit the received signal as an output signal; a source of charged particles constructed and adapted to deliver a beam of charged particles along a path adjacent the ultra-small resonant receiver structure, wherein the input signal is encoded in the beam of charged particles; and a detector mechanism constructed and adapted to detect the output signal from the ultra-small resonant transmitter structure and to provide a
    Type: Application
    Filed: May 5, 2006
    Publication date: March 20, 2008
    Applicant: Virgin Islands Microsystems, Inc.
    Inventors: Jonathan Gorrell, Mark Davidson, Paul Hart
  • Patent number: 7321204
    Abstract: A bulb structure of an electrodeless lighting system comprises: a bulb body having an interior space receiving a luminous material emitting light by microwave energy; a bulb support portion integrally extending from one side of the bulb body to communicate with the bulb body, supporting the bulb body, connected to a bulb rotating motor at its one end, and having therein a passage through which the luminous material is injected; and a covering portion formed at an inner communicating portion where the bulb body communicates with the bulb support portion so as to hermetically seal the bulb body, thereby improving light distribution characteristics of the electrodeless lighting system.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: January 22, 2008
    Assignee: LG Electronics, Inc.
    Inventors: Byeong-Ju Park, Yun-Chul Jung, Joon-Sik Choi, Yong-Seog Jeon, Hyun-Jung Kim, Ji-Young Lee, Seung-Yeup Hyun, Dae-Kyung Kim, Ri-Na Hwang
  • Patent number: 7276860
    Abstract: An electrodeless lighting system includes: a resonator which is installed at an exit of a wave guide for guiding microwave generated from a magnetron and making light pass and microwave resonate therein; a bulb positioned in the resonator and having a luminous portion filled with a luminous material emitting light by the microwave energy and a shaft portion integrally extended from the luminous portion; a resonance control member disposed inside the resonator and having a height controlled according to a position of the luminous portion of the bulb and the entire length of the resonator so as to make optimum resonance of the microwave; and a reflector positioned around the resonator for reflecting light emitted from the bulb. Accordingly, the electrodeless lighting system can facilitate light distribution for achieving lateral lighting and a wider range of lighting and simultaneously improve lighting efficiency.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: October 2, 2007
    Assignee: LG Electronics Inc.
    Inventors: Joon-Sik Choi, Yong-Seog Jeon, Byeong-Ju Park, Hyun-Jung Kim, Ji-Young Lee, Yun-Chul Jung
  • Patent number: 7215083
    Abstract: Microwave generator having two electrodes which are provided in a housing and are separated via a spark gap which breaks down when a high voltage is applied in order to emit microwaves, in which the first electrode (6) is in the form of a pot, and the other, inner electrode (5) engages over the first electrode on the outside at a distance therefrom at least over a part of the length thereof with the pot-shaped electrode (6) having a bottom section (10) which concurrently forms the side termination of the housing.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: May 8, 2007
    Assignee: Diehl BGT Defence GmbH & Co., KG
    Inventor: Geoffrey Staines
  • Patent number: 7196474
    Abstract: An electrodeless lighting apparatus includes: a waveguide for guiding microwave energy generated from a microwave generator; a resonance unit coupled with an outlet of the waveguide and comprising at least two resonators having mesh structures which are slidingly coupled with each other in the longitudinal direction such that the height of the resonance unit is varied and an aperture ratio according to the height of the resonance unit is varied, the resonance unit for resonating the microwave energy guided through the waveguide; and a bulb located inside the resonance unit and generating light as a material enclosed therein becomes plasma by microwave energy, so that the overall length of the resonance unit can be varied or aperture ratios of the mesh corresponding to the height of the resonance unit can be adjusted according to a bulb type and conditions to which the electrodeless lighting apparatus is applied, whereby a resonator does not need to be separately manufactured according to its length or apertur
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: March 27, 2007
    Assignee: LG Electronics Inc.
    Inventors: Hyun-Jung Kim, Ji-Young Lee, Seung-Yeup Hyun, Ri-Na Hwang
  • Patent number: 7129639
    Abstract: An electrodeless lighting system includes a resonator which passes light. The resonator communicates with a waveguide which guides microwave energy generated by a microwave generator. The microwave energy forms an electric field in the resonator. The electrodeless lighting system further includes a bulb, positioned in the resonator, that generates light from the electric field, a first coil which is wound around an outer circumferential surface of the resonator, and a second coil which is wound around the outer circumferential surface of the resonator. The bulb is disposed between the first coil and the second coil, with the first coil and the second coil forming a magnetic field around the bulb. Accordingly, initial lighting can be more easily achieved, and if the intensity of the magnetic field is properly controlled, the total quantity of light is increased, thereby improving luminous efficiency of the bulb.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: October 31, 2006
    Assignee: LG Electronics Inc.
    Inventors: Hyun-Jung Kim, Joon-Sik Choi, Yun-Chul Jung, Yong-Seog Jeon, Seung-Yeup Hyun, Byeong-Ju Park, Ri-Na Hwang, Dae-Kyung Kim, Ji-Young Lee
  • Patent number: 7126282
    Abstract: An electrodeless lighting system includes: a waveguide for guiding microwave energy generated from a microwave generator; and a resonator formed in a mesh structure allowing the microwave energy having passed the waveguide to resonate therein and passing light, and having around the bulb a microwave leakage preventing portion having a relatively low perforation ratio per unit area so that microwave energy is concentrated on the bulb positioned therein. Accordingly, leakage of microwaves is minimized and luminous efficiency is improved.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: October 24, 2006
    Assignee: LG Electronics Inc.
    Inventors: Joon-Sik Choi, Ji-Young Lee, Hyun-Jung Kim, Yong-Seog Jeon, Yun-Chul Jung, Seung-Yeup Hyun, Byeong-Ju Park, Ri-Na Hwang, Dae-Kyung Kim
  • Patent number: 7081707
    Abstract: Provided is a waveguide system for an electrodeless lighting device, comprising a waveguide guiding microwave energy outputted from an antenna of a microwave generation means which is fixedly-inserted into an inner surface of the waveguide, and having a slot formed at an inner surface of the waveguide and communicated with a resonator where a bulb is positioned for supplying the microwave energy inside the resonator, a first stub protruded from one inner surface of the waveguide to be placed adjacent to the slot, for an impedance matching with the antenna and tuning with an output frequency of the antenna; and a second stub protruded from an inner surface of the waveguide at a certain interval with the first stub and extending a bandwidth together with the first stub for tuning with the output frequency of the antenna is varied according to an impedance variation of the antenna, thereby enabling a supply of a maximal microwave energy outputted from an antenna to the resonator, and assuring of a resonance stab
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: July 25, 2006
    Assignee: LG Electronics Inc.
    Inventors: Tae-Ho Lee, Eui-Joon Park
  • Patent number: 7034464
    Abstract: A device that converts non-visible electromagnetic energy into light. The device includes a cylindrical electromagnetic resonator with a central through hole, a dielectric (preferably ceramic) material surrounded by symmetrically displaced through holes surrounding the central through hole. The device also includes a base and probes connected to the base. The probes are placed to introduce non-visible electromagnetic energy into the resonator. The device also includes a plasma lamp placed in the central through hole. The plasma lamp is placed to convert the non-visible electromagnetic energy into light. Preferably, the resonator is composed of a ceramic with a metalized surface except for inside the through holes.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: April 25, 2006
    Assignee: Sigma Designs, Inc.
    Inventors: Jamal S. Izadian, Larry DeClue, David Fealkoff
  • Patent number: 6979952
    Abstract: In an electrodeless lamp system, an electrodeless lamp system in accordance with the present invention includes an electromagnetic wave generating unit for generating electromagnetic wave; a resonance unit connected to the electromagnetic wave generating unit for resonating the electromagnetic wave generated in the electromagnetic wave generating unit in a certain frequency; and a luminous unit connected to the resonance unit in order to generate light by forming plasma by an electric filed formed in the resonance unit; wherein the resonance unit includes a first resonance unit connected to the electromagnetic wave generating unit and a second resonance unit vertically connected to the first resonance unit, connected to the luminous unit and forming a resonance space for resonating in a certain frequency with the first resonance unit.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: December 27, 2005
    Assignee: LG Electronics Inc.
    Inventors: Joon-Sik Choi, Yong-Seog Jeon, Hyo-Sik Jeon, Hyun-Jung Kim, Ji-Young Lee, Byeong-Ju Park
  • Patent number: 6960885
    Abstract: In an electrodeless discharge lamp using microwave energy, an electrodeless discharge lamp using microwave energy includes a resonator having an opening portion at the side and forming a resonance region at which microwave energy is resonated, a magnetron having an antenna in order to output microwave energy, a coaxial wave guide installed to the other side of the resonator, transmitting microwave energy from the magnetron to the resonator and having an internal guide extended in the projecting direction of the antenna of the microwave generator, a bulb placed inside the resonator and having enclosed fluorescent materials generating lights by the microwave energy, and a mesh member installed to the opening portion of the resonator, preventing leakage of microwave energy and passing lights generated in the bulb. Accordingly, by reducing a size of a lamp, it can be easily applied to a low-output system required a compact construction such as a projection TV, etc.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: November 1, 2005
    Assignee: LG Electronics Inc.
    Inventors: Hyun-Jung Kim, Joon-Sik Choi
  • Patent number: 6933675
    Abstract: An apparatus for blocking ambient air of an electrodeless lighting system comprises: a waveguide including a shaft hole so that a bulb shaft can be penetrated therethrough; a bulb motor mounted on a rear side of the waveguide and connected to a bulb, which is located on a front side of the waveguide, using the bulb shaft for rotating the bulb; and a sealing unit installed between the bulb motor and the waveguide for blocking inflow of ambient air to a direction of the bulb, that is, a sealing structure can be ensured so that the ambient air is not flowed into the light emitting area where the mesh screen is located, and thereby impurities are not flowed into the light emitting area to ensure the clear light emitting conditions, the oxidization of mesh screen can be reduced, and the stability of the lighting apparatus is improved and maintenance cost can be reduced.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: August 23, 2005
    Assignee: LG Electronics Inc.
    Inventor: Seong-Tae Seo
  • Patent number: 6917162
    Abstract: A slow wave circuit (10, 110) of a traveling wave tube includes a three-dimensional conductive structure (30, 130). A dielectric film (36, 136) coats selected portions of the three-dimensional conductive structure (30, 130). An outer housing (12, 14, 112, 114) surrounds the three-dimensional conductive structure (30, 130) . The outer housing (12, 14, 112, 114) includes interior surfaces that connect with the dielectric film (36, 136). In a method for generating or amplifying microwave energy, a three-dimensional conductive structure is laser micromachined to define a selected generally periodic pattern thereon. The conductive structure is arranged inside a generally hollow barrel. An electron beam passes through the generally hollow three-dimensional structure and interacts with the conductive structure and the generally hollow barrel to generate or amplify the microwave energy.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: July 12, 2005
    Assignee: Genvac Aerospace Corporation
    Inventor: James A. Dayton, Jr.
  • Patent number: 6897617
    Abstract: A method to limit ozone production in wind ion devices while simultaneously realizing incidents of high acceleration in such devices varies the high voltage potential across the array of emitter(s) (10) and collectors (20) over time in such a manner as to generate a wave effect of airflow. The variance may be achieved by switching, ramping, or gating the high voltage potential delivered to the array.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: May 24, 2005
    Assignee: Zenion Industries, Inc.
    Inventor: Jim L. Lee
  • Patent number: 6873119
    Abstract: A non-rotating electrodeless high-intensity discharge lamp system using circularly polarized microwaves. The lamp system has a first rectangular waveguide to propagate linearly polarized microwaves generated from a microwave source; an input circular waveguide linearly connected to the first rectangular waveguide; a second rectangular waveguide closed at an end thereof, and perpendicularly connected to a circumferential surface of the input circular waveguide; an elliptical waveguide linearly connected to the input circular waveguide such that the major axis of the elliptical waveguide is rotated to a predetermined angle relative to a horizontal surface of the input rectangular waveguide; a second circular waveguide linearly connected to the elliptical waveguide; and a discharge lamp housed in a mesh cover, and supported by the second circular waveguide while being held on a reflecting mirror.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: March 29, 2005
    Assignee: Taewon Electronic Co., Ltd.
    Inventors: Jin-Joong Kim, Jeong-Won Kim, Kyoung-Sub Oh
  • Patent number: 6856093
    Abstract: It is desirable to be able to provide evenly illuminated, long lasting, relatively high power ultraviolet radiation for manufacturing processes such as sterilization and ink or adhesive curing. A generally rigid waveguide (2) having a slot (8) formed in one of its short sides (4) (or optionally one of its long sides (6)) may have an ultraviolet energizable elongate lamp (10) inserted therein. When the waveguide is coupled to a source of microwave energy, the slot radiates and the radiated energy is coupled almost exclusively into the lamp (10). With suitable choices of slot widths this provides even illumination with minimal microwave leakage.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: February 15, 2005
    Assignee: JenAct Limited
    Inventors: Richard Little, David Briggs
  • Publication number: 20040239261
    Abstract: A non-rotating electrodeless high-intensity discharge lamp system using circularly polarized microwaves is herein disclosed. In an embodiment, the lamp system has a first rectangular waveguide (1) to propagate linearly polarized microwaves generated from a microwave source; an input circular waveguide (2) linearly connected to the first rectangular waveguide; a second rectangular waveguide (3) closed at an end thereof, and perpendicularly connected to a circumferential surface of the input circular waveguide; an elliptical waveguide (4) linearly connected to the input circular waveguide such that the major axis of the elliptical waveguide is rotated to a predetermined angle relative to a horizontal surface (or the wider surface) of the input rectangular waveguide; a second circular waveguide (6) linearly connected to the elliptical waveguide; and a discharge lamp (5) housed in a mesh cover (7), and supported by the second circular waveguide while being held on a reflecting mirror (9).
    Type: Application
    Filed: October 3, 2003
    Publication date: December 2, 2004
    Applicant: TAEWON ELECTRONIC CO., LTD
    Inventors: Jin-Joong Kim, Jeong-Won Kim, Kyoung-Sub Oh
  • Patent number: 6822394
    Abstract: For a compact microwave generator (11) with powerfully wide-band microwave radiation in which there is a marked resonance increase whose frequency center of gravity is variable in order to be able to adapt the power center in respect of the radiated wavelengths to the geometrical structure of a circuit configuration to be disturbed, a conductor (29) which coaxially surrounds the spark gap (13) between the electrodes (14-15) is electrically connected to one of the two electrodes (15) mechanically adjustably in its effective length as a variable resonator.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: November 23, 2004
    Assignee: Diehl Munitionssysteme GmbH & Co. KG
    Inventors: Geoffrey Staines, Josef Dommer, Frank Sonnemann, Jürgen Bohl, Tilo Ehlen
  • Patent number: 6815896
    Abstract: An electrodeless discharge lamp, including a waveguide for transmitting microwave emitted from a magnetron, a resonator positioned at an outlet port of the waveguide, for blocking the microwave and passing light and a united bulb, which is positioned inside the resonator, including a bulb portion which seals inert gas, and emits light by the microwave, and a reflective portion for reflecting the light emitted from the bulb portion forwards, which are integrally formed, can reduce assembly time of a lamp and reduce the whole size of a lamp.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: November 9, 2004
    Assignee: LG Electronics Inc.
    Inventor: Hyung-Joo Kang
  • Patent number: 6812647
    Abstract: A plasma generator particularly adapted for use as an ion beam generator. The plasma generator includes a plasma chamber body having an interior cavity and formed of a dielectric material such as boron nitride. The plasma chamber body is surrounded by a solenoidal magnet and is coupled to a radiofrequency waveguide. In the preferred embodiment both the plasma chamber body and the waveguide are composed of a dielectric material. Reductions in both the size of the chamber and the size of the waveguide, with resulting reductions in required input power, are achieved over comparable plasma generators. Use of a circularly polarized RF signal enhances coupling between the plasma and the RF signal.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: November 2, 2004
    Inventor: Wayne D. Cornelius
  • Patent number: 6809479
    Abstract: A self-ballasted electrodeless discharge lamp of the invention is provided with a discharge vessel filled with discharge gas, the discharge vessel having a cavity portion, a coil inserted into the cavity portion of the discharge vessel, a ballast circuit for supplying high frequency power to the coil, and a lamp base that is electrically connected to the ballast circuit, wherein the discharge vessel, the coil, the ballast circuit, and the lamp base are configured as a single unit, and a reflective tape for reflecting light that is radiated from the discharge gas and emitted from inside the discharge vessel to its cavity portion side is wound around the coil.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: October 26, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoko Shimomura, Koji Miyazaki, Satoshi Kominami, Kohei Enchi, Hiroyuki Uchiyama
  • Publication number: 20040178735
    Abstract: In an electrodeless lamp system, an electrodeless lamp system in accordance with the present invention includes an electromagnetic wave generating unit for generating electromagnetic wave; a resonance unit connected to the electromagnetic wave generating unit for resonating the electromagnetic wave generated in the electromagnetic wave generating unit in a certain frequency; and a luminous unit connected to the resonance unit in order to generate light by forming plasma by an electric filed formed in the resonance unit; wherein the resonance unit includes a first resonance unit connected to the electromagnetic wave generating unit and a second resonance unit vertically connected to the first resonance unit, connected to the luminous unit and forming a resonance space for resonating in a certain frequency with the first resonance unit.
    Type: Application
    Filed: July 1, 2003
    Publication date: September 16, 2004
    Inventors: Joon-Sik Choi, Yong-Seog Jeon, Hyo-Sik Jeon, Hyun-Jung Kim, Ji-Young Lee, Byeong-Ju Park
  • Patent number: 6791270
    Abstract: In a lighting apparatus using microwave, a lighting apparatus using microwave including a resonator excluding microwave and transmitting a fight, a waveguide placed at an internal domain of the resonator and transmitting the microwave, a microwave generating means installed at the side of the resonator and oscillating microwave into the waveguide, and a bulb placed at the center of the resonator and emitting light by generating a plasma by the microwave transmitted through the waveguide is capable of miniaturizing a lighting system and at the same time improving a lighting efficiency.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: September 14, 2004
    Assignee: LG Electronics Inc.
    Inventors: Hyun Jung Kim, Hyo Sik Jeon
  • Patent number: 6791280
    Abstract: A method of generating an electrical discharge in a high pressure gas contained in a sealed enclosure. The method includes driving a helical coil resonator at an RF frequency to generate an RF electric-magnetic field sufficient to generate an electrical discharge in the high pressure gas. The electrical discharge produces an emission spectrum that may be spectroscopically analyzed to determine the composition and impurity content of the gas.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: September 14, 2004
    Assignee: Advanced Lighting Technologies, Inc.
    Inventors: Ju Gao, Joseph T. Verdeyen
  • Publication number: 20040155589
    Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.
    Type: Application
    Filed: February 4, 2004
    Publication date: August 12, 2004
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Patent number: 6737810
    Abstract: An electrodeless discharge lamp apparatus includes an electrodeless discharge lamp, a microwave resonator, and a microwave coupler. The microwave resonator includes a conductive reflecting mirror having an opening, a conductive shield, and two opposing external electrodes provided substantially on a central axis of the reflecting mirror. The electrodeless discharge lamp is disposed between the opposing external electrodes. The focal point of the reflecting mirror is positioned between the opposing external electrodes. When microwave energy is supplied to the microwave resonator via the microwave coupler, a microwave resonant electric field occurs between the opposing external electrodes, whereby discharge of the electrodeless discharge lamp occurs.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: May 18, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Hochi, Kiyoshi Hashimotodani, Koichi Katase
  • Patent number: 6737809
    Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in a cavity within the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: May 18, 2004
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
  • Publication number: 20040089819
    Abstract: A radiation source includes an anode and a cathode for creating a discharge in a vapor in a space between anode and cathode and to form a plasma of a working vapor so as to generate electromagnetic radiation. The cathode defines a hollow cavity in communication with the discharge region through an aperture that has a substantially annular configuration around a central axis of said radiation source so as to initiate said discharge. A driver vapor is supplied to the cathode cavity and the working vapor is supplied in a region around the central axis in between anode and cathode.
    Type: Application
    Filed: November 5, 2003
    Publication date: May 13, 2004
    Applicant: ASML NETHERLANDS B.V.
    Inventors: Konstantin Nikolaevitch Koshelev, Frederik Bijkerk, Givi Georgievitch Zukavishvili, Evgenii Dmitreevitch Korop, Vladimir Vital?apos;Evitch Ivanov
  • Patent number: 6734638
    Abstract: An electrodeless lighting system comprising: a case; a waveguide, in which an exit is exposed out of the case, installed in the case for transmitting the microwave generated in a magnetron; a bulb located outside of the exit of the waveguide and emitting light as generating plasma by the microwave transmitted through the waveguide; a protecting member fixed on the exit of the waveguide around a boundary portion of the bulb for making a resonating area in which the microwave is resonated, and formed to endure the heat generated from the bulb; and a resonator connected to the protecting member on front side of the bulb and having a reticular portion so as to prevent the leakage of the microwave and pass the light generated from the bulb, and thereby, discoloring or burning of a mesh portion of the resonator by the high temperature generated from the bulb can be prevented and therefore the leakage of the microwave in the resonating area, accordingly stability of the lighting system can be improved and life span
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: May 11, 2004
    Assignee: LG Electronics Inc.
    Inventors: Hyung Joo Kang, Joon Sik Choi
  • Patent number: 6693382
    Abstract: In microwave energized ultraviolet bulbs, much of the input energy is converted to heat emissions. It has been found that the efficiency of such a bulb can be optimized by monitoring power density of different portions of the UV spectrum (for example, UVA and UVC) and adjusting input power to the bulb and/or the bulbs temperature accordingly. This may be used not only to improve efficiency of the bulb but also to improve the efficiency of emissions at either UVA or UVC. A control system and suitable control parameters are described.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: February 17, 2004
    Assignee: JenAct Limited
    Inventors: Richard Little, David Briggs
  • Patent number: 6667484
    Abstract: A radiation source includes an anode and a cathode for creating a discharge in a vapor in a space between anode and cathode and to form a plasma of a working vapor so as to generate electromagnetic radiation. The cathode defines a hollow cavity in communication with the discharge region through an aperture that has a substantially annular configuration around a central axis of said radiation source so as to initiate said discharge. A driver vapor is supplied to the cathode cavity and the working vapor is supplied in a region around the central axis in between anode and cathode.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: December 23, 2003
    Assignee: ASML Netherlands B.V.
    Inventors: Konstantin Nikolaevitch Koshelev, Frederik Bijkerk, Givi Georgievitch Zukavishvili, Evgenii Dmitreevitch Korop, Vladimir Vital'evitch Ivanov
  • Patent number: 6661183
    Abstract: An apparatus and method for intercepting leakage of microwave includes an electrodeless bulb for generating light by microwave generated from a magnetron, a sensing unit installed outside the resonator for intercepting the microwave, for passing light generated in the electrodeless bulb and outputting a corresponding sensing signal by sensing at real time whether the microwave is leaked and a control unit for turning on or off a power supplied to the magnetron by the sensing signal, thus to prevent a fire by leakage of the microwave and secure safety of a user by intercepting the microwave leaked by damage of the resonator of the lighting apparatus using the microwave.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: December 9, 2003
    Assignee: LG Electronics Inc.
    Inventors: Chang-Sin Park, Hyoun-Soo Hea
  • Patent number: 6653640
    Abstract: A linear induction accelerator, comprised of an injector block, acceleration block, the outlet device, and a drive source. The acceleration block is made from not less than two electrodynamically bound acceleration blocks of the single-channel linear induction accelerators, which are mutually oriented in such way that the direction of the electric field in any of the working channel is opposite to the electric field direction at least in one of the neighboring single-channel blocks of the single-channel linear induction accelerators. The invention allows a decrease of the real dimensions of the accelerator structure, increase of the electromagnetic compatibility level, technology and user safety, and a simplification of structure.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: November 25, 2003
    Inventors: Victor V. Kulish, Alexandra C. Melnyk
  • Patent number: 6633130
    Abstract: In a lighting apparatus using microwave energy including a magnetron for generating microwave energy, a bulb for generating lights by the microwave energy, a wave guide for connecting the magnetron and the bulb and transmitting the microwave energy generated in the magnetron to the bulb and a casing housing the magnetron and the wave guide and combining with the bulb, a cooling system of a lighting apparatus using microwave energy comprises a heat exchanger installed to the exterior of a magnetron and having a coolant path, a radiating unit installed to the exterior of a casing and radiating heat of the coolant heated while passing the path of the heat exchanger, and a flow generating means installed between an outlet of the radiating unit and an inlet of the heat exchanger in order to make the coolant circulate the heat exchanger and the radiating unit.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: October 14, 2003
    Assignee: LG Electronics Inc.
    Inventor: Young-Jin Bae
  • Publication number: 20030178943
    Abstract: A plasma lamp including a waveguide body consisting essentially of at least one solid dielectric material. The body is coupled to a microwave power source which causes the body to resonate in at least one resonant mode. A lamp chamber integrated into the body contains a fill which forms a light-emitting plasma when the chamber receives microwave power from the resonating waveguide body. The lamp has an aperture sealed to the external environment, thereby sealing the chamber but allowing light to be transmitted. Embodiments disclosed include lamps having a drive probe and a feedback probe, and lamps having a drive probe, feedback probe and start probe, which minimize power reflected from the body back to the source both before the plasma is formed and after it reaches steady state.
    Type: Application
    Filed: January 31, 2003
    Publication date: September 25, 2003
    Inventors: Frederick M. Espiau, Yian Chang
  • Publication number: 20030168987
    Abstract: In a lighting apparatus using microwave energy including a magnetron for generating microwave energy, a bulb for generating lights by the microwave energy, a wave guide for connecting the magnetron and the bulb and transmitting the microwave energy generated in the magnetron to the bulb and a casing housing the magnetron and the wave guide and combining with the bulb, a cooling system of a lighting apparatus using microwave energy comprises a heat exchanger installed to the exterior of a magnetron and having a coolant path, a radiating unit installed to the exterior of a casing and radiating heat of the coolant heated while passing the path of the heat exchanger, and a flow generating means installed between an outlet of the radiating unit and an inlet of the heat exchanger in order to make the coolant circulate the heat exchanger and the radiating unit.
    Type: Application
    Filed: April 12, 2002
    Publication date: September 11, 2003
    Applicant: LG Electronics Inc.
    Inventor: Young-Jin Bae