Abstract: An induction lamp lighting device includes an induction coil arranged adjacent to an induction lamp; a direct current power supply circuit for outputting a direct current voltage; a high-frequency power supply circuit for converting the direct current voltage to an alternating current voltage and supplying the alternating current voltage to the induction coil; and a control circuit for controlling the direct current power supply circuit and the high-frequency power supply circuit. The control circuit performs a startup preparation operation by which to control the high-frequency power supply circuit so that, immediately after the alternating current voltage begins to be outputted from the high-frequency power supply circuit to the induction coil, the alternating current voltage is gradually increased to such a voltage value as not to generate arc discharge in the induction lamp and then kept at the voltage value for a specified time.

Abstract: In various embodiments, an electrodeless high intensity discharge lamp is provided, which may include a bulb containing a fill mixture for generating a light emission when excited by microwave energy; and at least two applicator arms for coupling the microwave energy to the fill mixture, the at least two applicator arms being separated by at least one delay line, the at least one delay line comprising a stripline structure.

Abstract: An electrodeless plasma lamp having a bulb containing a fill that forms a light-emitting plasma is described. The lamp includes a power amplifier to provide radio frequency power to the fill at a frequency in the range of about 50 MHz to 10 GHz and the power amplifier is configured to operate in at least two classes of operation. Control electronics of the lamp is configured to change the class of operation of the power amplifier during operation of the plasma lamp. For example, the power amplifier may be configured to operate as a class A/B amplifier during at least a first mode of operation and a class C amplifier during at least a second mode of operation.

Abstract: A lamp with a quartz electrodeless bulb has a ceramic wave guide with a central void, in which the bulb is accommodated. The wave guide is rectangular. The central void is centered on a central longitudinal plane of the wave guide, normal to front and back faces of the wave guide and equally spaced from end faces. Parallel with the central void and also on the central plane are two further voids for respective antennae. The central void is open through the front face for egress of light, but the antenna voids are not open in this face. The latter is metalized to inhibit egress of microwave energy from the wave guide.

Abstract: An induction lamp includes a brightness control module, an induction unit, a register, and an illuminating unit. The brightness control module, the induction unit, the register, and the illuminating unit are electrically connected to each other in that order. When the induction unit detects a control signal from a user, the induction unit sends a detecting signal to change an address of the register, and the brightness control module controls a brightness of the illuminating unit depending on the address of the register.

Abstract: An electrodeless bulb has a hollow quartz tube, with a solid stem extending from one end and a short hollow tip extending from the other end. The hollow interior of the tube extends into the tip with the same diameter as in the tube, but the wall thickness of the tip is reduced from that of the tube. The bulb is charged with an amount of indium bromide and traces of other metal halides to adjust light spectrum and a filling of xenon gas.

Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body comprising 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 dielectric bulb within a lamp chamber in the body contains a fill which when receiving energy from the resonating body forms a light-emitting plasma. The bulb is transparent to visible light and infrared radiation emitted by the plasma. Radiative energy lost from the plasma is recycled by reflecting the radiation from thin-film, multi-layer coatings on bulb exterior surfaces and/or lamp chamber surfaces back into the bulb.

Abstract: The electrodeless discharge lamp comprises: a bulb provided with a substantially-spherical spherical portion and a neck portion extending from the spherical portion; a base connected to the neck portion; a protrusion formed at an apex of the spherical portion; and an induction coil that causes light emission by discharge developed in the bulb. The electrodeless discharge lamp satisfies the formula below: t?6?10959×X+25?t+6??(Formula) where X=(B×S)/(L×A), B=W/(4×?×(D/20)2), S=?×(d/20)2, L=?×(d/10), W (W) denotes the lamp input power, D (mm) denotes the diameter of the spherical portion, d (mm) denotes the diameter of a portion at a joint surface between the neck portion and the base, and A (mm) denotes the distance from a largest-diameter portion of the spherical portion to the joint surface, and t is the temperature (° C.) at the tip of the protrusion during downward stable lighting of the electrodeless discharge lamp.

Abstract: The present invention relates to a terahertz wave generator and a method of generating high-power terahertz waves using the terahertz wave generator. The terahertz wave generator includes a hollow spherical body, and a focusing lens installed in a cutout portion of the spherical body or an opening formed in the cutout portion, wherein an inner surface of the spherical body is coated with metal. In the method, frequencies having different levels are incident through the focusing lens or the opening to generate a plurality of air plasmas, and the air plasmas cause continuous focusing the metal-coated inner surface and hollow space of the spherical body, thus generating high-power terahertz waves. According to the present invention, a plurality of air plasmas is continuously generated, thus solving the problem in which the light intensity of terahertz waves generated using one air plasma is low.

Abstract: An electrodeless lamp protecting device installed between an electrodeless lamp and a power source comprises a substrate having a feedback signal input module, a signal level determination module and a protection signal output module installed on the substrate. A signal of the power source is transmitted from the feedback signal input module to the signal level determination module, and the signal serves as a reference for an output signal of the protection signal output module, such that the electrodeless lamp has an automatic protection function upon the receipt of an abnormal signal.

Abstract: Pulse Density Modulation (PDM) controls light brightness from a fluorescent lamp by applying voltages to the lamp filaments at two or more sequential signal frequencies. A low frequency, an intermediate frequency and a high frequency may be used to control the brightness of the lamp. The lamp gas ionizes to produce light only when the low or intermediate frequency voltage is applied thereto. The lamp gas is not ionized at the high frequency voltage, but the high frequency voltage keeps the lamp filaments warm during low brightness conditions. The low frequency, intermediate frequency, no and/or high frequency voltages have time periods that occur within a modulation frame time period that repeats continuously. The ratio of the low frequency and intermediate frequency time periods, and the no and/or high frequency voltage time periods determine the light output of the fluorescent lamp, and also maintain a proper temperature of the filaments.

Abstract: An electrodeless plasma lamp and method of generating light are described. The lamp may comprise a lamp body, a source of radio frequency (RF) power and a bulb. The lamp body may comprise a solid dielectric material and at least one conductive element within the solid dielectric material. The source of RF power is configured to provide RF power and an RF feed configured to radiate the RF power from the RF source into the lamp body. One or more tuning mechanisms allow tuning of the lamp body to a given resonant frequency. The bulb is positioned proximate the lamp body and contains a fill that forms a plasma when the RF power is coupled to the fill from the lamp body. The at least one conductive element is configured to concentrate an electric field proximate the bulb.

Abstract: A plasma electrodeless lamp comprises a substantially hollow metallic body, closely receiving two coupling elements, the first coupling element connected to the output of an RF amplifier, and the second coupling element connected to the input of an RF amplifier. The first coupling element is conductively connected (grounded) to metallic lamp body at its top surface, while the second coupling element is not. The lamp further comprises a vertical metallic post, the post being grounded to the metallic lamp body at the post's bottom surface. The lamp further comprises a dielectric sleeve which closely receives the metallic post, and which is in turn closely supported by the lamp body or alternatively or in combination a tuning stub. The lamp further comprises a bulb that is closely received by the metallic post, and that encloses a gas-fill which forms a radiant plasma when excited.

Abstract: A microwave-excited ultraviolet lamp system includes a microwave chamber cooled with air drawn through the chamber by a negative pressure source. A filter provided at an inlet of the lamp system prevents particulate material from entering the microwave chamber.

Abstract: An electrodeless plasma lamp is described comprising a lamp body including a solid dielectric material. The lamp includes a bulb received at least partially within an opening in the solid dielectric material and a radio frequency (RF) feed configured to provide power to the solid dielectric material. A conductive material is provided adjacent to the bulb to concentrate the power proximate the bulb. The conductive material may be located below an upper surface of the solid dielectric material. The conductive material may modify at least a portion of an electric field proximate the bulb so that the portion of the electric field is oriented substantially parallel to an upper surface of the lamp body.

Abstract: To prevent the continuation of the abnormal state occurring immediately after the lighting start of the electrodeless discharge lamp excited by a DC driven magnetron and to recover promptly from the abnormal state at the steady state period. Lighting start of an electrodeless discharge lamp is performed in soft start mode. Increasing the power supply to the magnetron gradually, the lamp is turned into a lighting state for longer time than the time for the luminescence medium to evaporate fully absorbing microwave. At that period, the output of DC power supply is periodically cut off momentarily, resetting the abnormal state. Then, stable DC power is supplied. At the steady state period, the anode current of the magnetron is controlled to be constant. When rise of the operation voltage of the magnetron is detected, the output of DC power supply is cut off momentary to recover to the steady state.

Abstract: Described is an electrode-less plasma lamp comprising a gas-fill vessel, a gas-fill contained within the gas-fill vessel, an RF electromagnetic radiation source, an RF electromagnetic resonator, an output probe that couples RF energy from the RF electromagnetic resonator to the gas-fill vessel, an input probe that couples RF energy from the RF electromagnetic radiation source to the resonator, and a grounding strap that holds a metal veneer surrounding the resonator and a portion of the gas-fill vessel at RF ground. Also described are many variations of the electrode-less plasma lamp; non-limiting examples of which include embodiments that employ other probes in a Dielectric Resonant Oscillator to drive the lamp, and many methods of improving light-harvesting, including raising the gas-fill vessel away from the resonator via a coaxial type transmission line, and collecting light with an optical reflector.

Abstract: Described is a plasma electrode-less lamp. The device comprises an electromagnetic resonator and an electromagnetic radiation source conductively connected with the electromagnetic resonator. The device further comprises a pair of field probes, the field probes conductively connected with the electromagnetic resonator. A gas-fill vessel is formed from a closed, transparent body, forming a cavity. The gas-fill vessel is not contiguous with (detached from) the electromagnetic resonator and is capacitively coupled with the field probes. The gas-fill vessel further contains a gas within the cavity, whereby the gas is induced to emit light when electromagnetic radiation from the electromagnetic radiation source resonates inside the electromagnetic resonator, the electromagnetic resonator capacitively coupling the electromagnetic radiation to the gas, which becomes a plasma and emits light.

Abstract: Methods and systems for providing illumination of a specimen for inspection are provided. One embodiment relates to a system configured to provide illumination of a specimen for inspection. The system includes an electrodeless lamp configured to generate light. The system is further configured such that the light illuminates the specimen during the inspection. Another embodiment relates to a system configured to inspect a specimen. The system includes an electrodeless lamp configured to generate light and one or more optical elements configured to direct the light to the specimen. The system also includes a detection subsystem configured to generate output responsive to light from the specimen. The output can be used to detect defects on the specimen. An additional embodiment relates to a method for providing illumination of a specimen for inspection. The method includes illuminating the specimen during the inspection with light generated by an electrodeless lamp.

Abstract: A lamp assembly adapted to operate as one of a total number of lamp assemblies that are connected together in series and connected to a ballast. The lamp assembly comprises an electrodeless, closed-loop, tubular lamp envelope enclosing mercury vapor and a buffer gas, and a transformer core disposed around a portion of the lamp envelope. An input winding is disposed on the transformer core so that it has a particular number of turns, Ninput. An auxiliary winding is disposed on the transformer core so that it has a particular number of turns, Nauxiliary. The auxiliary winding is adapted to connect to the ballast and to couple with the input winding. The ratio of the particular number of turns Ninput to the particular number of turns Nauxiliary is substantially proportional to the total number of lamp assemblies that are adapted to operate in series together.

Abstract: An electrodeless plasma lamp and method of generating light are described. The lamp may comprise a lamp body, a source of radio frequency (RF) power and a bulb. The lamp body may comprise a solid dielectric material and at least one conductive element within the solid dielectric material. The source of RF power is configured to provide RF power and an RF feed configured to radiate the RF power from the RF source into the lamp body. The bulb is positioned proximate the lamp body and contains a fill that forms a plasma when the RF power is coupled to the fill from the lamp body. The at least one conductive element is configured to concentrate an electric field proximate the bulb.

Abstract: A radio frequency (RF) power supply for an electrodeless lamp includes a pair of DC rails, an RF inverter having power input terminals connected between the rails, a first inductor arranged to inductively couple with an electrodeless lamp, first and second resonance capacitors that each connects a respective one of two input terminals of the first inductor to a same first rail of the pair of DC rails, and a second (ballasting) inductor connecting an output of the RF inverter to one of the two input terminals of the first inductor. Thus, the first inductor is connected in a symmetrical ?-filter and supplied by two equal but phase-opposite voltages whose sum is the lamp voltage. The inductance of the ballasting inductor is significantly reduced so that the RF efficiency of the power supply is 96%.

Abstract: A plasma lamp including a waveguide body comprising at least one 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 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.

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.

Abstract: A light-emitting device utilizing gaseous sulfur compounds is provided. This device includes a first substrate with an energy transmission coil disposed thereover, a dielectric barrier layer embedding underneath the energy transmission coil, a sealant wall circling around the dielectric barrier layer, a second substrate disposed against the first substrate and supported by the sealant wall, and a high-frequency oscillating power supply connected to the energy transmission coil. Normally the second substrate is a transparent substrate. Between the first and second substrates thereby defines an inner chamber, wherein a gaseous reactant comprising an inert gas and a sulfur-containing gas is filled. While powering up, the energy transmission coil induces an electromagnetic field within the inner chamber between the two substrates as causing decomposing/regenerating process cycles of sulfur molecules to lighting up the light-emitting device.

Abstract: A light-emitting device having an excited sulfur medium by inductively-coupled electrons is provided. This device includes a substrate, an energy transmission coil disposed over the substrate, a transparent discharge cavity disposed over the energy transmission coil, having a substantially planar top and bottom surface, and a high-frequency oscillating power supply coupled to the energy transmission coil. While power up, the energy transmission coil induces an electromagnetic field within the transparent discharge cavity of the light-emitting device. In one embodiment, the transparent discharge cavity includes a sulfur-containing medium disposed within the transparent discharge cavity, and a buffer gas or a plurality of buffer gasses filling inner space of the transparent discharge cavity.

Abstract: 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 collimated beam 5. The light emitting resonator comprises an enclosure 11 formed of inner and outer envelopes 12,13 of quartz. These are circular cylindrical tubes 14,15, with respective end plates 16,17. A tungsten wire mesh 18, of a mesh size to exhibit a ground plane to microwaves within the resonator, is sandwiched between the tubes and the end plates respectively. Each envelope, comprised of its tube and end plates is hermetic. An earth connection 18? extends from the mesh to the outside of the envelope. The length axially of the enclosure between the wire mesh sandwiched between the end plates is ?/2 for the operating microwave frequency. At one end of the enclosure, a molybdenum drive connection 19 extends to a tungsten disc 20.

Abstract: The present invention comprises a globe shield and an inner disposed inside the shield, between which a low-pressured plasmic arc discharging zone is enclosed. Further, a glass division device near the inner in the discharging zone is coated with fluorescent powder on the surface thereof and is formed by glass or sheet glass having at least one opening defined on the glass to ensure the passage of air. The present invention advantages preferable ruminant efficiency as 15 to 20% higher as that of the conventional products, increasing the thermal resistance between the high-temperature circular discharging zone of the plasmic arc and the power coupler to decrease the heat generated by the corresponding radiation conduction for the inner, so that a large power is enabled by the present invention, accomplishing a performance of 200-300 W of the lighting power, and attaining a 75-85 Lm/W of the ruminant efficiency.

Abstract: In one example embodiment, a drive probe is coupled to the lamp body to provide the primary power for ignition and steady state operation of the lamp. Feedback may be used to adjust frequency in response to changing conditions of the lamp during startup. A phase shifter may be used to adjust the phase of the power between ignition and steady state operation. A sensor may detect a lamp operating condition that automatically triggers a shift in phase after the fill in the bulb is vaporized. In another example embodiment, a method for sequentially optimizing the drive power and phase shift applied to the lamp is disclosed that may reliably regulate the lamp current consumption to desired startup and operational levels despite variations in lamp environmental conditions.

Abstract: What is claimed is the generator of the excess electromagnetic energy (“generator”) for the illuminating gas discharge (fluorescent) lamps for the advertising devices, the interior spaces, the open spaces, etc. The basis of the generator is the Kriuk antenna (Ukrainian Patent No. 79626), with the Earth's electromagnetic field being excited in the limited (local) area around the said antenna and with the gas molecules in the gas discharge lamps being ionized until the light is generated. Owing to the fact that the electromagnetic field of the Kriuk antenna is limited spatially and that the Earth's electromagnetic field is relatively unlimited spatially, the excess electromagnetic energy is produced; that is to say that the coefficient of the energy conversion is greater than unity. It has been established by the experimental means that this coefficient is no less than for times unity (>400%), that is no less than the coefficient of the energy conversion of the known heat pumps (?400%).

Abstract: An electrodeless discharge lamp device comprises an induction coil, a pair of cores 1a, 1b, and thermal conductor 2. The cores 1a, 1b are configured to generate a high-frequency electromagnetic field for exciting a discharge gas with receiving a high frequency electric power. Each of the cores is arranged to give an overall circumference around which the induction coil is wound. The thermal conductor is formed into an approximately cylindrical shape and inserted into the space so as to be thermally coupled with the cores for radiating heat generated at the cores. The core has its inside face at least center portion of which is spaced radially from the thermal conductor by a predetermined distance.

Abstract: Described is an electrode-less plasma lamp comprising a gas-fill vessel, a gas-fill contained within the gas-fill vessel, an RF electromagnetic radiation source, an RF electromagnetic resonator, an output probe that couples RF energy from the RF electromagnetic resonator to the gas-fill vessel, an input probe that couples RF energy from the RF electromagnetic radiation source to the resonator, and a grounding strap that holds a metal veneer surrounding the resonator and a portion of the gas-fill vessel at RF ground. Also described are many variations of the electrode-less plasma lamp, non-limiting examples of which include embodiments that employ other probes in a Dielectric Resonant Oscillator to drive the lamp, a lamp employing more than one resonator per gas-fill vessel, and many methods of improving light-harvesting, including raising the gas-fill vessel away from the resonator via a coaxial transmission line, and collecting light with an optical reflector.

Abstract: An oscillator generates a triangular wave signal whose inclination for charging a capacitor and inclination for discharging the same are the same and which is used to turn on/off FETs Qp1 and Qn1. A signal generation part generates first drive signal in a period shorter than a half period of the triangular wave signal to drive the Qp1, and generates a second drive signal having a pulse width substantially equal to that of the first drive signal and a phase difference of about 180 degrees with respect to the first drive signal, to drive the Qn1 and provide a current to the discharge tube in a direction opposite to the current driven by the first drive signal. Furthermore a pulse current generation circuit converts a synchronization pulse voltage signal into a pulse current that alternates between positive and negative current values.

Abstract: A discharge lamp lighting device has an oscillation control circuit for determining a frequency with time constant of R and C, a L-C series resonant circuit connected to a half bridge or full bridge operating at the frequency and a circuit in which one end of hot cathodes at both ends of a hot cathode type discharge tube are respectively connected to both ends of a resonant capacitor. A capacitor is further connected in series to other ends of filaments at both ends of the discharge tube for lighting. Dimming of tube current is achieved by changing the oscillation frequency with a DC dimming control voltage by use of a variable capacitor or diode for determining the frequency of the oscillation control circuit. By simultaneously changing the tube current and a filament current of the discharge lamp, the tube current is decreased upon dimming and the filament current is increased.

Abstract: A plasma lamp. The lamp includes a housing having a spatial volume defined within the housing. In a specific embodiment, the spatial volume has an inner region and an outer region. The lamp also has a support region coupled to the inner region of the spatial volume and a support body having an outer surface region slidably inserted and disposed within or partially disposed the support region. In a preferred embodiment, the support body has a support length, a support first end, and a support second end. The plasma lamp has a gas-filled vessel coupled to the support first end of the support body. In a preferred embodiment, the gas filled vessel has a transparent or translucent body, an inner surface and an outer surface, a cavity formed within the inner surface. In a preferred embodiment, the cavity is sealed and includes a fill material, which is capable of discharge. The lamp has an rf source operably coupled to at least the first end of the gas-filled vessel.

Abstract: A light source device includes: a microwave power source which generates microwaves; a central conductor which radiates the microwaves; and a light emitter which emits light by receiving the microwaves, wherein the central conductor and the light emitter are spaced from each other.

Abstract: An electrodeless plasma lamp array structure uses multiple plasma lamps to produce large amounts of electromagnetic radiation (visible, IR, UV, or a combination of visible, IR, and UV). An M by N array configuration is powered by either a single RF power source or multiple RF power sources. The array incorporates controllers to adjust the power delivered from the RF power source to each lamp within the array. By adjusting the delivered RF power, the intensity of electromagnetic radiation that is emitted from each lamp is controlled independently allowing for the creation of an array of lamps that emit electromagnetic radiation of varying intensity levels at different places within the array. Using lamps with different color temperatures as part of the array allows the color temperature and the color rendering index of the illumination to achieve different lighting conditions.

Abstract: A plasma lamp for an electrodeless plasma lamp having a dielectric waveguide body and a bulb positioned, at least in part, in the waveguide body and having at least one end protruding from the waveguide body. A probe is used to couple power into the waveguide body. The power resonates in the waveguide body and ignites a plasma in the bulb. By having one or both ends of the bulb extend beyond the surface of the waveguide body, the ends of the bulb are exposed to reduced electric field intensity, resulting in longer bulb lifetime due to reduced plasma impingement on the interior surfaces of the bulb.

Abstract: There is provided a mercury-free discharge bulb for a vehicle. The mercury-free discharge bulb includes an arc tube. The arc tube includes: a light-emitting portion which is formed of a ceramic tube and includes a light-emitting material and a starting xenon gas filled therein, wherein a filling pressure of the starting xenon gas from about 6 atm to about 18 atm; thin tube portions which are formed at respective ends of the light-emitting portion; and electrodes which are fixed inside the thin tube portions and which are provided in the light-emitting portion so as to face each other. The light-emitting material includes at least a sodium halide and a rare-earth metal halide excluding a scandium halide, and a difference between a vapor pressure of the sodium halide and a vapor pressure of the rare-earth metal halide under an environment of about 1000° C. is about 10 kPa or less.

Abstract: Disclosed is a cooling structure for a plasma lighting system comprising a fan housing having at least two discharge ports having different flow rates for introducing external air into a case and cooling heat generating components in the case. The structure intensively cools heat generating components of high temperature such as a magnetron, thereby prolonging a life span of the components and enhancing a performance of a system.

Abstract: An electrodeless plasma lamp and method of generating light are described. The lamp may comprise a lamp body, a source of radio frequency (RF) power and a bulb. The lamp body may comprise a solid dielectric material and at least one conductive element within the solid dielectric material. The source of RF power is configured to provide RF power and an RF feed configured to radiate the RF power from the RF source into the lamp body. One or more tuning mechanisms allow tuning of the lamp body to a given resonant frequency. The bulb is positioned proximate the lamp body and contains a fill that forms a plasma when the RF power is coupled to the fill from the lamp body. The at least one conductive element is configured to concentrate an electric field proximate the bulb.

Abstract: A power conversion structure includes a power factor correction circuit which has an energy storage coil, a switch and a voltage boosting control unit. The voltage boosting control unit drives the switch to set OFF and ON of the switch to change the period of current passing through the energy storage coil to alter the phase of the current. The energy storage coil is coupled with at least one induction coil to induce and generate driving power to energize lighting equipment. The amount of the driving power is determined by the coil ratio of the induction coil and the energy storage coil. Through the induction coil, the energy storage coil can be induced to generate the driving power which is determined by the coil ratio of the induction coil and energy storage coil.

Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body comprising 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 dielectric bulb within a lamp chamber in the body contains a fill which when receiving energy from the resonating body forms a light-emitting plasma. The bulb is transparent to visible light and infrared radiation emitted by the plasma. Radiative energy lost from the plasma is recycled by reflecting the radiation from thin-film, multi-layer coatings on bulb exterior surfaces and/or lamp chamber surfaces back into the bulb.

Abstract: A plasma lamp and a method of generating light are provided. The plasma lamp may include a lamp body having a dielectric constant greater than about 2 and a power source. The power source is coupled to the lamp body by a feed to provide power to the lamp body. A bulb containing a fill having a first portion and a second portion is provided. The bulb is positioned so that the first portion of the fill is located within the lamp body and the second portion of the fill is located outside of the lamp body. In use, the fill receives at least a portion of the power from the lamp body to form a light-emitting plasma. The volume of the bulb is less than the volume of the lamp body.

Abstract: A luminaire reflector comprises a first end reflector segment, a second end reflector segment, and a main reflector segment bonded together as a single-piece. The main reflector segment, the first end reflector segment, and the second end reflector segment form a microwave cavity that can accommodate a microwave-powered bulb. The luminaire reflector is configured to be mated to at least one waveguide of a luminaire assembly. The luminaire reflector comprises at least one RF coupling slot to transmit microwave energy from the waveguide side to the microwave cavity side of the reflector assembly.

Abstract: In an example embodiment, an electrodeless plasma lamp is provided which comprises a lamp body comprising a dielectric material having a relative permittivity greater than 2, and a bulb adjacent to the lamp body, the bulb containing a fill that forms a plasma when RF power is coupled to the fill from the lamp body. An RF feed is coupled to the lamp body and a radio frequency (RF) power source for coupling power into the lamp body through the RF feed is provided. A shortest distance between an end of the bulb and a point on the RF feed traverses at least one electrically conductive material of the lamp body.

Abstract: A plasma lighting system comprises a resonator, a bulb received in the resonator and containing a discharge material therein for emitting light in accordance with the discharge material is exited as a plasma state, and a dielectric mirror disposed at one side of the bulb and formed of a spontaneous reflective material for spontaneously reflecting light generated from the bulb. The dielectric mirror can be included or excluded, and can smoothly reflect light without an additional reflection coating layer. The dielectric mirror is prevented from being damaged even in a high temperature, and thus a lowering of an optical efficiency is prevented when used for a long time.

Abstract: Electrodeless plasma lamp and fill is described. Power may be over coupled to the lamp during startup and a significant percentage of the power is reflected. In some examples, 40-80% of the power may be initially reflected and less than 100 watts of forward power may be provided to the lamp. A high pressure fill is used to increase resistance and coupling of power during startup. In one example, a fill of noble gas, Mercury and metal halide is used and the high pressure decreases the warm up time required to vaporize the Mercury and metal halide. In some embodiments, the pressure may be between 200 Torr to 3000 Torr. A combination of metal halides may be used to provide desired characteristics. For example, Aluminum Halide, Indium Halide and/or Thallium Halide may be combined with one or more metal halides having a metal from the Lanthanide series.

Abstract: An electrode-less plasma lamps comprises generally of a bulb containing a gas-fill that is excited to produce light using radio-frequency (RF) energy. In specific embodiments, the use of grounded coupling-elements with integrated bulb assemblies simplifies manufacturability, improves resonant frequency control, and enables the use of solid, partially filled, and hollow lamp bodies. In some embodiments, a method of operating an electrodeless plasma lamp device includes transferring RF energy from the RF source to an input coupling-element and illuminating electromagnetic energy substantially from the length of a gas-filled vessel from discharge of the gas-filled vessel.

Abstract: An electrodeless plasma lamp and method of generating light is described. The lamp may comprise a lamp body comprising a dielectric material having a relative permittivity greater than 2. A lamp drive circuit is coupled to the lamp body and configured to provide radio frequency (RF) power to the lamp body. A bulb is positioned adjacent to the lamp body, the bulb containing a fill that forms a plasma when the RF power is coupled to the fill from the lamp body. The lamp drive circuit includes a control circuit to control the RF power to vary a temperature of the fill to emit light at adjustable output intensities. The control circuit may be configured to modulate a frequency of the RF power. In an example embodiment, the control circuit is configured to modulate the frequency in the range of 10 Hz to 10 KHz.