Abstract: The invention is a microwave powered lamp (10). The lamp includes a light reflective cavity (28); an electrodeless bulb (16) contained in the light reflective cavity (26) from which light is emitted when the electrodeless bulb is excited by microwaves; a magnetron (12) for providing the microwaves for exciting the electrodeless bulb; a waveguide (14) which couples the microwaves emitted by the magnetron to the light reflective cavity for exciting the electrodeless bulb; a housing (22) which contains the lamp; a detector (102, 202) disposed within the housing, which detects the microwaves which are not coupled to the bulb during operation of the magnetron and outputs a signal indicative of a level of received microwaves; and a magnetron control (300), coupled to the detector, which causes the magnetron to be turned off when a level of the signal indicates the level of received microwaves exceeds a threshold.

Abstract: The invention is a magnetron 10 and a method of operation of a magnetron. A magnetron in accordance with the invention comprises an anode cylinder (14); a cathode (12) disposed within the anode cylinder; a plurality of vanes (16) extending inward into the anode cylinder so as which form a plurality of resonant cavities; an electrically insulative magnetron chamber wall (20) coupled to the anode; an antenna (18) coupled to at least one of the vanes which provides an output of microwaves passing through the electrically insulative magnetron chamber wall when the magnetron is operating; and at least one baffle (102, 202 and 302) disposed in lines of sight (40, 42, 44 and 46) between the cathode and the electrically insulative magnetron chamber wall on which material emitted from the cathode is deposited instead of on the electrically insulative magnetron chamber wall.

Abstract: A system and method are provided to power a plurality of magnetrons devices. The system may include a power supply device to power a first magnetron device, a second magnetron device and a third magnetron device. A control device may control (or apportion) an amount of current to each of the second and third magnetron devices.

Abstract: A lamp assembly in accordance with the invention includes an electrodeless bulb (14) which is symmetrical about an axis (16) and which contains a light emissive fill which emits light when the bulb is excited by a RF electrical field coupled to the fill; an electrically conductive coupler (18) comprising a plurality of turns (20) which are symmetrical about an axis of the electrically conductive coupler, the turns defining a volume (19) that at least partially contains the bulb; and a conductor (26) connected to a center portion of the electrically conductive coupler with connection of the conductor to the electrically conductive coupler providing a fixing of the coupler relative to the bulb which, when the conductor is connected to a source of RF electrical potential, conducts a RF current producing a RF electrical potential on the electrically conductive coupler that produces the RF electrical field coupled to the light emissive fill.

Abstract: A lamp assembly in accordance with the invention includes an electrodeless bulb (14) which is symmetrical about an axis (16) and which contains a light emissive fill which emits light when the bulb is excited by a RF electrical field coupled to the fill; an electrically conductive coupler (18) comprising a plurality of turns (20) which are symmetrical about an axis of the electrically conductive coupler, the turns defining a volume (19) that at least partially contains the bulb; and a conductor (26) connected to a center portion of the electrically conductive coupler with connection of the conductor to the electrically conductive coupler providing a fixing of the coupler relative to the bulb which, when the conductor is connected to a source of RF electrical potential, conducts a RF current producing a RF electrical potential on the electrically conductive coupler that produces the RF electrical field coupled to the light emissive fill.

Abstract: A system and method are provided to power a plurality of magnetrons devices. The system may include a power supply device to power a first magnetron device, a second magnetron device and a third magnetron device. A control device may control (or apportion) an amount of current to each of the second and third magnetron devices.

Abstract: The present invention is a microwave excited lamp and a microwave gasket. A microwave excited lamp (10) in accordance with the invention includes at least one microwave source (12); a microwave structure (20) comprising a metallic material to which microwaves are coupled from the microwave source; the microwave structure, including a reflector (22) comprising the metallic material and containing a microwave excited bulb (24) which emits light in response to coupling of microwave power thereto from the microwave source; and at least one microwave gasket (100) which provides a microwave tight seal between a surface of the reflector and at least one other metallic part of the microwave structure with the gasket comprising the metallic material; and wherein during operation of the lamp a microwave current maxima flows on a surface of the gasket and the reflector.

Abstract: The present invention is a microwave excited lamp and a microwave gasket. A microwave excited lamp (10) in accordance with the invention includes at least one microwave source (12); a microwave structure (20) comprising a metallic material to which microwaves are coupled from the microwave source; the microwave structure, including a reflector (22) comprising the metallic material and containing a microwave excited bulb (24) which emits light in response to coupling of microwave power thereto from the microwave source; and at least one microwave gasket (100) which provides a microwave tight seal between a surface of the reflector and at least one other metallic part of the microwave structure with the gasket comprising the metallic material; and wherein during operation of the lamp a microwave current maxima flows on a surface of the gasket and the reflector.

Abstract: A system and method are provided to power two magnetrons devices. The system may include a power supply device to power a first magnetron device and a second magnetron device. A control device may control an amount of current reaching at least the first magnetron device.

Abstract: A system and method are provided to power two magnetrons devices. The system may include a power supply device to power a first magnetron device and a second magnetron device. A control device may control an amount of current reaching at least the first magnetron device.

Abstract: An apparatus for treating material with radiant energy, comprises a first reflector having a first object focus disposed outside thereof; and a second reflector having a second object focus. The first reflector is disposed with respect to the second reflector such that the second object focus is disposed further away from the first reflector than the first object focus. A radiant energy source is disposed within the first reflector whereby radiant energy is directed to the first object focus. An auxiliary reflector is disposed at the first object focus whereby radiant energy from the source is reflected to the second reflector and thence to the second object focus where the material being treated is disposed, whereby the second object focus permits the product to be positioned farther than the first object focus.

Abstract: A thyratron has an auxiliary "keep-alive" electrode in the form of a surface element with at least one aperture therein. In a preferred embodiment, the auxiliary electrode is disposed adjacent the upper end of a heat shield surrounding the cathode of the thyratron and is preferably coplanar with the upper end of the heat shield. A baffle can also be provided between the auxiliary electrode and the cathode to enhance control of the thyratron's switching action.