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Fusion Lighting, Inc. Patents
Assignee:
Fusion Lighting, Inc.
Address:
Rockville, MD
No. of patents:
54
Patents:


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Patent Number Title Of Patent Date Issued
6628079 Lamp utilizing fiber for enhanced starting field September 30, 2003
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 electrodes. Suitable materials for
6617806 High brightness microwave lamp September 9, 2003
An electrodeless microwave discharge lamp includes a source of microwave energy, a microwave cavity, a structure configured to transmit the microwave energy from the source to the microwave cavity, a bulb disposed within the microwave cavity, the bulb including a discharge forming fill
6552620 Power oscillator April 22, 2003
An oscillator includes a solid state active device having an input and an output, a feedback circuit connected from the output of the active device to the input of the active device, the feedback circuit providing suitable positive feedback to initiate and sustain an oscillating conditio
6509675 Aperture lamp January 21, 2003
A discharge lamp includes means for containing a light emitting fill, the fill being capable of absorbing light at one wavelength and re-emitting the light at a different wavelength, the light emitted from the fill having a first spectral power distribution in the absence of reflection o
6476557 Non-rotating electrodeless lamp containing molecular fill November 5, 2002
An electrodeless lamp includes a stationary bulb (10) containing a fill for producing a discharge, the fill has a primary radiating material which ordinarily produces an unstable discharge in the absence of bulb rotation. The fill further includes an alkali metal in an amount sufficient
6469444 Lamp with improved color rendering October 22, 2002
A discharge lamp for providing visible radiation includes a lamp envelope which is made of light transmissive material a fill in the envelope including either calcium halide or strontium halide together with either elemental sulfur or elemental selenium in gaseous form which is obtainabl
6465959 Method and apparatus for improved electrodeless lamp screen October 15, 2002
A screen (49) including mesh portions (47 and 48) for a discharge lamp (46) bears a protective coating which inhibits degradation of the screen under lamp operating conditions. The coating does not absorb microwave energy, is transparent or reflective to visible light, and is capable of
6424099 High output lamp with high brightness July 23, 2002
An ultra bright, low wattage inductively coupled electrodeless aperture lamp is powered by a solid state RF source in the range of several tens to several hundreds of watts at various frequencies in the range of 400 to 900 MHz. Numerous novel lamp circuits and components are disclosed
6326739 Wedding ring shaped excitation coil December 4, 2001
A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably
6316875 Electroded selenium lamp November 13, 2001
An arc discharge lamp includes a light transmissive envelope (3), two electrodes (1, 2) disposed at least partially inside the light transmissive envelope, and a plasma forming fill which includes selenium when excited disposed inside the light transmissive envelope (3). The exterior
6313587 High frequency inductive lamp and power oscillator November 6, 2001
A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably
6310443 Jacketed lamp bulb envelope October 30, 2001
A jacketed lamp bulb envelope includes a ceramic cup having an open end and a partially closed end, the partially closed end defining an aperture, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material at least partially covering a portion
6291936 Discharge lamp with reflective jacket September 18, 2001
A discharge lamp includes an envelope, a fill which emits light when excited disposed in the envelope, a source of excitation power coupled to the fill to excite the fill and cause the fill to emit light, and a reflector disposed around the envelope and defining an opening, the refle
6265813 Electrodeless lamp with sealed ceramic reflecting housing July 24, 2001
An electrodeless lamp (10) for producing an intense beam of light includes a concave lamp body (11) that surrounds the lamp interior. A gas, such as sulfur or selenium or compounds thereof, is contained within the lamp body (11) for forming a plasma light source. The concave lamp body (1
6252346 Metal matrix composite integrated lamp head June 26, 2001
An integrated lamp head for an electrodeless lamp includes a metal-matrix composite enclosure, an insulating ceramic encased by the metal-matrix enclosure, the insulating ceramic having an interior surface, and an excitation structure integrally formed on the interior surface of the
6246160 Lamp method and apparatus using multiple reflections June 12, 2001
An electrodeless microwave discharge lamp includes an envelope with a discharge forming fill disposed therein which emits light, the fill being capable of absorbing light at one wavelength and re-emitting the absorbed light at a different wavelength, the light emitted from the fill havin
6225756 Power oscillator May 1, 2001
An oscillator includes an amplifier having an input and an output, and an impedance transformation network connected between the input of the amplifier and the output of the amplifier, wherein the impedance transformation network is configured to provide suitable positive feedback fr
6204601 Device for controlling a magnetron filament current based on detected dynamic impedance March 20, 2001
The present invention refers to a method for controlling a magnetron filament current. The control is provided by detecting the dynamic impedance or a noise level of the magnetron and by controlling the magnetron filament current based thereupon.
6181054 Lamp bulb with integral reflector January 30, 2001
An improved electrodeless discharge lamp bulb includes an integral ceramic reflector as a portion of the bulb envelope. The bulb envelope further includes two pieces, a reflector portion or segment is cast quartz ceramic and a light transmissive portion is a clear fused silica. In one
6137237 High frequency inductive lamp and power oscillator October 24, 2000
A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably
6084348 Lamp having specific fill providing reduced restrike time July 4, 2000
An electrodeless lamp includes a light transmissive envelope and a fill disposed in the envelope where the fill has the characteristic of emitting light when ignited and is excited by high frequency electrical energy provided by an R.F. or microwave source. The lamp includes a fill mater
6072268 Lamp apparatus and method for re-using waste light June 6, 2000
The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp whi
6046545 Light source apparatus using coaxial waveguide April 4, 2000
A light source apparatus excites an electrodeless lamp bulb with energy of microwaves generated from a magnetron. A microwave transmission line is improved so that microwaves can be transmitted efficiently and the light source apparatus can be miniaturized. A first cylindrical member is
6031333 Compact microwave lamp having a tuning block and a dielectric located in a lamp cavity February 29, 2000
A microwave lamp having a compact structure utilizing a coupling slot which has a dielectric member extending therethrough and a tuning block adjoining the coupling slot. A non-conventional waveguide is used which has about the width of a WR-284 waveguide and about the length of a WR-340
6020676 Lamp with light reflection back into bulb February 1, 2000
The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp whi
6005332 Polarized light producing lamp apparatus that uses low temperature polarizing film December 21, 1999
A high efficiency lamp apparatus for producing a light beam of polarized light includes an electrodeless lamp body that defines a chamber. A gas is contained within the chamber such as sulfur or selenium or a compound thereof that can be excited to form a plasma. Electrodes are positione
5977724 Bulb rotation for eliminating partial discharges November 2, 1999
The envelope of an electrodeless lamp which would tend to produce a discharge which does not substantially fill the interior of the envelope if the envelope is not rotated or is rotated at insufficient speed, is rotated at a high enough speed to cause the discharge to substantially f
5977712 Inductive tuners for microwave driven discharge lamps November 2, 1999
An RF powered electrodeless lamp utilizing an inductive tuner in the waveguide which couples the RF power to the lamp cavity, for reducing reflected RF power and causing the lamp to operate efficiently.
5949180 Lamp apparatus with reflective ceramic sleeve holding a plasma that emits light September 7, 1999
A lamp apparatus for producing a beam of light that can be used as a part of a source for a projection system. The lamp apparatus of the present invention produces a beam of light originating from a small aperture. The apparatus includes an electrodeless lamp body in the form of elongate
5925981 Tellurium lamp July 20, 1999
A lamp for providing visible radiation includes tellurium or a tellurium compound in the fill. This substance is present in an amount such that when the fill is excited with sufficient power, substantially all of the radiation resulting from tellurium is emitted at wavelengths exceeding
5923116 Reflector electrode for electrodeless bulb July 13, 1999
A lamp apparatus includes an electrodeless bulb that includes a chamber, a gas contained within the chamber in the bulb, and at least one reflector electrode adjacent the bulb for transmitting radio-frequency electromagnetic energy to the gas in the bulb to excite the gas and cause i
5910710 Method and apparatus for powering an electrodeless lamp with reduced radio frequency interferenc June 8, 1999
An electrodeless lamp waveguide structure includes tuned absorbers for spurious RF signals. A lamp waveguide with an integral frequency selective attenuation includes resonant absorbers positioned within the waveguide to absorb spurious out-of-band RF energy. The absorbers have a negligi
5903091 Lamp method and apparatus using multiple reflections May 11, 1999
A method wherein the light in a sulfur or selenium lamp is reflected through the fill a multiplicity of times to convert ultraviolet radiation to visible. A light emitting device comprised of an electrodeless envelope which bears a light reflecting covering around a first portion which d
5866990 Microwave lamp with multi-purpose rotary motor February 2, 1999
In a microwave powered electrodeless lamp, a single rotary motor is used to a) rotate the bulb and b) provide rotary motion to a blower or pump means for providing cooling fluid to the magnetron and/or to a forced gas cooling for providing cooler gas to the bulb. The blower may consist o
5866980 Sulfur/selenium lamp with improved characteristics February 2, 1999
The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp whi
5847517 Method and apparatus for igniting electrodeless lamp with ferroelectric emission December 8, 1998
Ignition of an electrodeless lamp, energized by microwave or radio frequency energy, is achieved by disposing a ferroelectric igniter in the lamp envelope along with the fill material. The igniter responds to switching of its spontaneous ferroelectric polarization by emitting electro
5841242 Electrodeless lamp with elimination of arc attachment November 24, 1998
An electrodeless lamp arrangement powered by RF energy. The lamp arrangement having an envelope that is rotated and most importantly the envelope forms the center of a coaxial arrangment used to transfer the RF energy into the envelope.
5841233 Method and apparatus for mounting a dichroic mirror in a microwave powered lamp assembly using d November 24, 1998
A microwave powered electrodeless lamp includes an improved screen unit having mesh and solid sections with an internal reflector secured at the juncture of the two sections to reflect light into a light-transmitting chamber defined in the lamp microwave cavity by the reflector and the m
5834895 Visible lamp including selenium November 10, 1998
A lamp for emitting in the visible portion of the spectrum, which utilizes a fill which includes a selenium and/or a sulfur containing substance. The lamp has superior performance characteristics, including long lifetime and excellent color rendition. The bulb may be either electrodeless
5831386 Electrodeless lamp with improved efficacy November 3, 1998
A sulfur, selenium, and/or tellurium based lamp for providing visible light. The lamp is operated in a regime for providing high efficacy wherein the ratio of the volume to surface area of the bulb is greater than 0.45 cm, the concentration of the sulfur, selenium, or tellurium is le
5811936 One piece microwave container screens for electrodeless lamps September 22, 1998
A microwave powered electrodeless lamp includes an improved screen unit having mesh and solid sections with an internal reflector to reflect light into a light-transmitting chamber defined in the lamp microwave cavity by the reflector and the mesh section. A discharge envelope of a bulb
5804922 Lamp with controllable spectral output September 8, 1998
The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp whi
5798611 Lamp having controllable spectrum August 25, 1998
The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp whi
5786667 Electrodeless lamp using separate microwave energy resonance modes for ignition and operation July 28, 1998
An apparatus which couples microwave energy to an electrodeless lamp. A source of microwave energy is connected to a wave guide having a slot along one wall thereof. A nominally cylindrical cavity enclosing an electrodeless lamp is closed at one end and coupled at a second end to the
5773918 Lamp with light reflection back into bulb June 30, 1998
The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp whi
5757130 Lamp with electrodes for increased longevity May 26, 1998
A lamp for emitting in the visible portion of the spectrum, which utilizes a fill which includes a selenium and/or a sulfur containing substance. The lamp has superior performance characteristics. Special electrode structures are provided which enhance longevity.
5688064 Method and apparatus for coupling bulb stem to rotatable motor shaft November 18, 1997
An inexpensive and reliable method and apparatus for selectively coupling the bulb stem of an electrodeless lamp to a rotatable drive shaft does not require side access to a set screw or an RF sealing arrangement. The coupler accommodates angular and eccentric misalignment of threadedly
5682080 Method and apparatus for igniting electrodeless lamp discharge October 28, 1997
Ignition of an electrodeless lamp, energized by microwave or radio frequency energy, is achieved by disposing an additive material in the lamp envelope along with the primary fill material. In a first embodiment, the additive is at least partially electrically conductive at room temp
5661365 Tellurium lamp August 26, 1997
A lamp for providing visible radiation includes tellurium or a tellurium compound in the fill. This substance is present in an amount such that when the fill is excited with sufficient power, substantially all of the radiation resulting from tellurium is emitted at wavelengths exceeding
5594303 Apparatus for exciting an electrodeless lamp with an increasing electric field intensity January 14, 1997
Apparatus for efficiently exciting an electrodeless lamp to produce visible light. A source of microwave energy is coupled to a cylindrical cavity which encloses an electrodeless lamp. The cylindrical cavity includes a sidewall and end wall which is made from a metallic mesh which passes
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