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| Number | Title | Issue Date |
| 8089203 | Light source A lamp comprises a light source in the form of a light emitting resonator 1, a magnetron 2 and a stub tuner 3. A reflector 4 is fitted at the junction of the light source and the stub tuner, for directing the light in a generally collimat... | 01/03/2012 |
| 7772753 | Electrodeless lamp core assembly including coil bobbin and lamp envelope protector In an electrodeless lamp, at least one core assembly is coupled to a tubular lamp envelope. The core assembly includes a lamp envelope protector disposed over an outer surface of the lamp envelope, and a core member surrounding the lamp envelope at a core mounting l... | 08/10/2010 |
| 7719173 | Electrodeless discharge lamp and lighting apparatus using the same An electrodeless discharge lamp has a bulb into which a discharge gas and a mercury, which is controlled at a temperature of a coldest spot are filled. A power coupler generates a high frequency electromagnetic field. A ferrule couples the bulb and the power coupler... | 05/18/2010 |
| 7439661 | Image display apparatus having ION pump including permanent magnet It is an object of the present invention to provide an image display apparatus in which the change over time of its electron source characteristics is small, and in which uneven brightness and color shift of an image is almost unnoticeable. To achieve this object, t... | 10/21/2008 |
| 7215082 | Electrodeless self-ballasted fluorescent lamp and electrodeless discharge lamp operating apparatus An electrodeless self-ballasted fluorescent lamp includes: a luminous bulb 1 having a cavity portion 15; an induction coil 3 inserted in the cavity portion 15; a ballast 4 electrically connected to the induction coil 3; and ... | 05/08/2007 |
| 7180248 | Inductively coupled ballast circuit A ballast circuit is disclosed for inductively providing power to a load. The ballast circuit includes an oscillator, a driver, a switching circuit, a resonant tank circuit and a current sensing circuit. The current sensing circuit provides a current feedback signal... | 02/20/2007 |
| 7180230 | RF induction lamp with reduced electromagnetic interference An electrodeless fluorescent lamp 10 has an envelope 12 that includes a chamber 14. A core 16 of magnetic material, preferably ferrite, is positioned in the chamber 14 and has a first winding 18 surrounding the core and havi... | 02/20/2007 |
| 7153178 | Method of manufacturing a lamp assembly A lamp assembly configured to inductively receive power from a primary coil. The lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in series with the lamp an... | 12/26/2006 |
| 7081702 | Electrodeless lighting system An electrodeless lighting system includes: a resonator installed at an outlet of a waveguide guiding microwave energy generated from a magnetron and defining a cavity allowing light to pass therethrough while resonating microwave therein; a bulb positioned in the re... | 07/25/2006 |
| 6960883 | Flash lamp device and flash emitting device A flash lamp device having a flash lamp that includes an arc tube in which a pair of electrodes are disposed in opposition and a high voltage supply proximal conductor which extends parallel to the electrodes, on the exterior of the arc tube of the flash lamp. The h... | 11/01/2005 |
| 6949887 | High frequency inductive lamp and power oscillator An oscillator includes an amplifier having an input and an output, a feedback network connected between the input of the amplifier and the output of the amplifier, the feedback network being configured to provide suitable positive feedback from the output of the amp... | 09/27/2005 |
| 6917163 | Inductively powered lamp assembly A lamp assembly configured to inductively receive power from a primary coil. The inductively powered lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in ser... | 07/12/2005 |
| 6741032 | Plasma display panel using helicon plasma source A plasma display panel having a helicon plasma source. First and second substrates are mounted substantially in parallel with a predetermined gap therebetween. A plurality of address electrodes are formed on a surface of the first substrate opposing the second subst... | 05/25/2004 |
| 6628079 | Lamp utilizing fiber for enhanced starting field A discharge lamp bulb includes a light transmissive envelope and at least one conductive fiber disposed on a wall of the envelope, where the fiber has a thickness of less than 100 microns. The lamp may be either electrodeless or may include internal elect... | 09/30/2003 |
| 6605889 | Electrodeless low pressure lamp with multiple ferrite cores and coils An electrodeless low pressure discharge lamp comprises an envelope made from a straight tube and a reentry cavity sealed to one of tube's ends. The cavity has several hollow ferrite cores separated from each other with a few mm distance. Each ferrite core... | 08/12/2003 |
| 6268699 | Electrodeless gas discharge lamp assembly having transversely mounted envelope and method of manufacture An electrodeless gas discharge lamp includes a light-transmissive envelope having opposite ends and a midsection about which an induction coil is disposed. The envelope and coil are mounted transversely on a base with the ends of the envelope exposed such... | 07/31/2001 |
| 6194828 | Electrodeless gas discharge lamp having flat induction coil and dual gas envelopes An electrodeless gas discharge light assembly includes a lamp base (12) having a pair of light-transmitting lenses (14, 16) supported in axially opposed relation to one another. An electrodeless gas discharge light source (28) is mounted between the lense... | 02/27/2001 |
| 6118226 | Electrodeless neon light module for vehicle lighting systems A light assembly (10) for a vehicle includes a housing (12) having a light-transmissive cover (18) and an RF emission gas discharge light source (22) provided as a self-contained module mountable in the housing (12). The module (22) includes an envelope (... | 09/12/2000 |
| 6097137 | Electrodeless discharge lamp An electrodeless discharge lamp comprises a sealed discharge vessel containing a fill capable of sustaining a discharge when suitably energized, and circuitry for energizing a solenoid to produce an RF electromagnetic field in the vessel to energize the f... | 08/01/2000 |
| 5998914 | Electrodeless gas discharge lamp assembly and method of manufacture An electrodeless gas discharge lamp assembly (10) includes a light-transmitting envelope (12) having an illumination gas (14) sealed therein. An induction coil (24) is disposed about the envelope (12) and is operative when driven to excite the gas (14) to... | 12/07/1999 |
| 5905343 | Inductively coupled incandescent light bulb An incandescent bulb having a looped filament within an evacuated bulb containing a gas mixture including a halogen employs magnetic means external to the bulb to provide inductive heating of the filament so that there are no connections passing through t... | 05/18/1999 |
| 5861706 | Electrodeless high intensity discharge medical lamp A light source, particularly suited for surgical and other medical illumination applications, includes an electrodeless lamp assembly, a reflector having the electrodeless lamp assembly mounted therein and high frequency power source for supplying high fr... | 01/19/1999 |
| 5760547 | Multiple-discharge electrodeless fluorescent lamp For a given lamp size and lumen power, an electrodeless fluorescent lamp is configured with a split excitation coil and a baffle structure to provide multiple discharges, resulting in a higher light output and higher luminous efficacy.... | 06/02/1998 |
| 5717292 | Plasma displays employing magnetic enhancement Improved plasma displays utilize permanent magnet components for low-voltage operation. Permanent magnet components providing magnetic fields transverse to the direction of electron movement increase the electron pathlength, thereby enhancing the ionizati... | 02/10/1998 |
| 5610476 | Spiral fluorescent tube and method and device for manufacturing the same A fluorescent tube which is used for bulb-type fluorescent lamps is spirally wound, so that the effective length of the tube is increased. While a fluorescent tube is kept vertical, it is rotated and heated evenly at the part to be wound to a glass soften... | 03/11/1997 |
| 5500574 | Inductively coupled substantially flat fluorescent light source Electrodeless, low pressure, fluorescent discharge lamp of high aspect ratio, with a substantially flat spiral rf coil adjacent a back face (and insulated therefrom), that emits light through a front surface or selected portions under control of internal ... | 03/19/1996 |
| 5412288 | Amalgam support in an electrodeless fluorescent lamp An electrodeless SEF fluorescent discharge lamp of the type having an envelope with a re-entrant cavity formed therein for containing an excitation coil includes an amalgam positioned for maintaining an optimum mercury vapor pressure during lamp operation... | 05/02/1995 |
| 5412289 | Using a magnetic field to locate an amalgam in an electrodeless fluorescent lamp An electrodeless SEF fluorescent discharge lamp of the type having an envelope with a re-entrant cavity formed therein for containing an excitation coil includes an amalgam positioned for maintaining an optimum mercury vapor pressure during lamp operation... | 05/02/1995 |
| 5144199 | Microwave discharge light source device A microwave discharge light source device in which one side of a discharge space in which a plasma emission takes place is defined by a transparent dielectric member. A transparent microwave reflecting member is disposed in a position such as to face the ... | 09/01/1992 |
| 5039903 | Excitation coil for an electrodeless high intensity discharge lamp An excitation coil for a high intensity discharge lamp has an optimized configuration for maximizing efficiency and minimizing output light blockage. The coil includes a conductive surface having a shape which corresponds to rotating a bilaterally symmetr... | 08/13/1991 |
| 4959584 | Luminaire for an electrodeless high intensity discharge lamp A luminaire for an electrodeless high intensity discharge lamp houses a replaceable lamp. The lamp is insertable into the socket of the luminaire which has an excitation coil attached thereto. The lamp may include light-reflecting cones for maximizing lig... | 09/25/1990 |
| 4954748 | Thyratron gas discharge device with magnetic field for improved ionization In a thyratron gas discharge device, magnetic material is located coaxially with the anode to produce a magnetic field between the anode and cathode which is substantially parallel to a discharge established between them. This causes electrons emitted fro... | 09/04/1990 |
| 4949047 | Segmented RFQ accelerator A segmented radio-frequency quadrupole accelerator (10) having a top segment (12), a bottom segment (14), a first side segment (16) and a second side segment (18), each segment having an elongated vane portion (20) arranged in diametrically-opposed pairs ... | 08/14/1990 |
| 4939414 | Color cathode ray tube with magnetic field conducting plates within envelope An improved picture sensitivity to the magnetic field produced by a field deflection coil (28) for an in-line gun shadow mask display tube is obtained by positioning magnetic field conducting elements (32, 34) within the envelope of the display tube in th... | 07/03/1990 |
| 4897572 | Light tube with slidable electrodes A wide angle flash tube reflector has dual involute surfaces thereon intersecting at a cusp and bent in the horizontal to intercept light from a light source adjacent the cusp and to reflect such light in a dispersion pattern that spreads the flash covera... | 01/30/1990 |
| 4833363 | Ignitron with arc-centering magnetic field An ignitron device is provided in which a permanent annular magnet at least partly surrounds the region between the ignitron anode and the surface of a mercury pool connected to the cathode terminal, the magnet being effective to create an axial magnetic ... | 05/23/1989 |
| 4782303 | Current guiding system The magnetomotive force of a current produces a magnetic field in magnetic material which encircles the current. Although magnetic material attracts a current, material having vanes repels the current because of magnetic flux lines produced between the va... | 11/01/1988 |
| 4774437 | Inverted re-entrant magnetron ion source An ion source for an intense ion beam from a solid source is formed with a cathode around a central anode. A source of magnetic field with closely spaced poles is formed around a central region of the cathode so that the most intense region of the magneti... | 09/27/1988 |
| 4746836 | Flat cathode ray display tube A flat cathode ray display tube in which an electron beam (30) is directed firstly in a rear region (24) parallel to a faceplate (14) carrying a phosphor screen (16) and then reversed to travel in the opposite direction in a front region (22) before being... | 05/24/1988 |
| 4556821 | Color image display system having an improved external magnetic shield A color image display system includes a shadow mask type cathode-ray tube having a longitudinal axis, the tube including a panel, a funnel and a neck with a deflection yoke assembly encircling adjoining segments of the neck and funnel. A plurality of neck... | 12/03/1985 |
