Patents by Inventor Marc DeVincentis
Marc DeVincentis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8860323Abstract: An electrodeless plasma lamp is provided. The lamp includes a conductive enclosure including a dielectric material (e.g., air) and a bulb containing a fill to form a light emitting plasma. A radio frequency (RF) power source is coupled into to the enclosure. At least one conductive applicator applies power from the enclosure to the bulb and at least one limped inductive element is coupled between the RF feed and applicator. The lumped inductive element may be a helically wound coil. In an example embodiment, the lamp includes first and second lumped inductive elements. The first and second lumped inductive elements may extend from opposed end walls of the enclosure. The first lumped inductive element may be connected to a first conductive applicator located proximate a first end of the bulb and the second lumped inductive element may be connected to a second conductive applicator located proximate a second end of the bulb.Type: GrantFiled: September 30, 2011Date of Patent: October 14, 2014Assignee: Luxim CorporationInventor: Marc DeVincentis
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Patent number: 8853931Abstract: An electrodeless plasma lamp having a lamp body and a power source configured to provide radio-frequency (RF) power via a feed to the lamp body is provided. The lamp includes a first conductive element and a second conductive element. The first conductive element has a first side with a first protrusion. The second conductive element has a second side with a second protrusion. The first side and second side face each other and spaced apart by a first distance and configured to couple the RF power via an electric field to a fill to form at least one plasma arc. The first protrusion and the second protrusion extend towards each other and are spaced apart by a second distance that is less than the first distance. The first and second protrusions may provide localized enhancement of the electric field at the first side and the second side.Type: GrantFiled: December 17, 2010Date of Patent: October 7, 2014Assignee: Luxim CorporationInventors: Abdeslam Hafidi, Dan O'Hare, Marc DeVincentis
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Publication number: 20130278140Abstract: An electrodeless plasma lamp is described that employs acoustic resonance. The plasma lamp includes a metal enclosure having a conductive boundary forming a resonant structure, and a radio frequency (RF) feed to couple RF power from an RF power source into the resonant cavity. A bulb is received at least partially within an opening in the metal enclosure. The bulb contains a fill that forms a light emitting plasma when the power is coupled to the fill. The RF power source includes a controller to modulate the RF power to induce acoustic resonance in the plasma.Type: ApplicationFiled: April 19, 2013Publication date: October 24, 2013Applicant: Luxim CorporationInventors: Sandeep Mudunuri, Marc DeVincentis, Abdeslam Hafidi, Walter P. Lapatovich
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Patent number: 8487543Abstract: An electrodeless plasma lamp and a method of generating light are described. The lamp may comprise a lamp body including a dielectric material. The bulb is positioned proximate the lamp body and contains a fill that forms a plasma when radio frequency (RF) power is coupled to the fill. The conductive element is located within the lamp body and configured to enhance coupling of the RF power to the fill. The lamp may include a feed coupled to the RF power source and configured to radiate power into the lamp body. The at least one conductive element is configured to enhance the coupling of radiated power from the feed to the fill. In an example, two spaced apart conductive elements may be located within the lamp body. The bulb may be an elongated bulb having opposed ends, each opposed end of the bulb being proximate a corresponding conductive element.Type: GrantFiled: October 19, 2007Date of Patent: July 16, 2013Assignee: Luxim CorporationInventors: Marc DeVincentis, Abdeslam Hafidi, Sandeep Mudunuri
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Patent number: 8436546Abstract: 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.Type: GrantFiled: February 22, 2012Date of Patent: May 7, 2013Assignee: Luxim CorporationInventors: Marc DeVincentis, Abdeslam Hafidi, Richard Gilliard, Dan O'Hare
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Patent number: 8350480Abstract: A plasma lamp for an electrodeless plasma lamp having a shaped dielectric waveguide body. The shaped body may have a relatively thin region containing a bulb, and a second region thicker than the first region. Microwave probes may be positioned in the second region to provide power to the waveguide body. The body may be shaped to intensify the electric field in the first region adjacent to the bulb to allow operation at a lower frequency than a solid cylindrical or rectangular waveguide body having the same volume and dielectric constant.Type: GrantFiled: January 25, 2010Date of Patent: January 8, 2013Assignee: Luxim CorporationInventors: Marc DeVincentis, Yian Chang, Frederick M. Espiau, legal representative
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Patent number: 8319439Abstract: An electrodeless plasma lamp and a method of controlling operation of a plasma lamp are provided. The plasma lamp may a power source to provide radio frequency (RF) power and a lamp body to receive the RF power from a feed. The lamp body may comprise a dielectric material having a dielectric constant greater than 2 and bulb is provided that contains a fill that forms a plasma that emits light when at least a portion of the RF power is coupled to the fill. A light guide directs light from the bulb to a photosensor that is shielded from light output from a front side of the lamp body. The lamp includes a drive circuit to control operation of the lamp based on a level of light detected by the photosensor.Type: GrantFiled: September 18, 2009Date of Patent: November 27, 2012Assignee: Luxim CorporationInventors: Gregg Hollingsworth, Marc DeVincentis, Anthony D. McGettigan, Sandeep Mudunuri, Naresh Murthy, Dan O'Hare
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Publication number: 20120274209Abstract: 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.Type: ApplicationFiled: April 30, 2012Publication date: November 1, 2012Applicant: Luxim CorporationInventors: Marc DeVincentis, Richard Gilliard
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Patent number: 8294382Abstract: In various exemplary embodiments, an electrodeless plasma lamp includes a bulb configured to be coupled to a source of radio frequency (RF) power. The bulb contains a fill that forms a plasma when the RF power is coupled to the fill. An electrically-conductive convex shield is positioned proximate to the bulb with a convex surface of the shield being distal to the bulb. A resonant structure having a quarter wave resonant mode includes a lamp body having a dielectric material having a relative permittivity greater than 2 with an inner conductor and an outer conductor. The source of RF power is configured to provide RF power to the lamp body at about a resonant frequency for the resonant structure.Type: GrantFiled: January 6, 2010Date of Patent: October 23, 2012Assignee: Luxim CorporationInventors: Marc DeVincentis, Dan O'Hare
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Publication number: 20120212128Abstract: 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.Type: ApplicationFiled: February 22, 2012Publication date: August 23, 2012Applicant: Luxim CorporationInventors: Marc DeVincentis, Abdeslam Hafidi, Richard Gilliard, Dan O'Hare
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Patent number: 8232730Abstract: 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.Type: GrantFiled: August 3, 2010Date of Patent: July 31, 2012Assignee: Luxim CorporationInventors: Marc DeVincentis, Paul Ralston, Gregg Hollingsworth, Jae Won Kim
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Patent number: 8188662Abstract: 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.Type: GrantFiled: December 17, 2010Date of Patent: May 29, 2012Assignee: Luxim CorporationInventors: Abdeslam Hafidi, Dan O'Hare, Marc DeVincentis
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Patent number: 8169152Abstract: 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.Type: GrantFiled: January 31, 2011Date of Patent: May 1, 2012Assignee: Luxim CorporationInventors: Marc DeVincentis, Richard Gilliard
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Patent number: 8159136Abstract: 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: GrantFiled: February 7, 2008Date of Patent: April 17, 2012Assignee: Luxim CorporationInventors: Marc DeVincentis, Sandeep Mudunuri
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Publication number: 20120086334Abstract: An electrodeless plasma lamp is provided. The lamp includes a conductive enclosure including a dielectric material (e.g., air) and a bulb containing a fill to form a light emitting plasma. A radio frequency (RF) power source is coupled into to the enclosure. At least one conductive applicator applies power from the enclosure to the bulb and at least one limped inductive element is coupled between the RF feed and applicator. The lumped inductive element may be a helically wound coil. In an example embodiment, the lamp includes first and second lumped inductive elements. The first and second lumped inductive elements may extend from opposed end walls of the enclosure. The first lumped inductive element may be connected to a first conductive applicator located proximate a first end of the bulb and the second lumped inductive element may be connected to a second conductive applicator located proximate a second end of the bulb.Type: ApplicationFiled: September 30, 2011Publication date: April 12, 2012Applicant: Luxim CorporationInventor: Marc DeVincentis
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Patent number: 8143801Abstract: 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.Type: GrantFiled: April 3, 2009Date of Patent: March 27, 2012Assignee: Luxim CorporationInventors: Marc DeVincentis, Abdeslam Hafidi, Richard Gilliard, Dan O'Hare
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Publication number: 20110298354Abstract: In an example embodiment, an electrodeless plasma lamp is provided which comprises a dielectric body having an effective dielectric constant greater than two. The dielectric body may have a surface with a first region coated with an electrically conductive material and a second region that is not coated with the electrically conductive material. A bulb is located proximate to the second region of the dielectric body and having an outer surface area and the second region may have an uncoated surface area that is less than about sixty percent (60%) of the outer surface area of the bulb. A power source is coupled to the dielectric body to provide radio frequency power to the dielectric body at a frequency that resonates at a fundamental mode in the dielectric body. The bulb contains a fill that forms a plasma when the radio frequency power is provided from the dielectric body through the second region.Type: ApplicationFiled: August 16, 2011Publication date: December 8, 2011Applicant: Luxim CorporationInventors: Frederick M. Espiau, Yian Chang, Frederick M. Espiau, Marc DeVincentis
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Patent number: 8022607Abstract: In an example embodiment, an electrodeless plasma lamp is, provided which comprises a dielectric body having an effective dielectric constant greater than two. The dielectric body may have a surface with a first region coated with an electrically conductive material and a second region that is not coated with the electrically conductive material. A bulb is located proximate to the second region of the dielectric body and having an outer surface area and the second region may have an uncoated surface area that is less than about sixty percent (60%) of the outer surface area of the bulb. A power source is coupled to the dielectric body to provide radio frequency power to the dielectric body at a frequency that resonates at a fundamental mode in the dielectric body. The bulb contains a fill that forms a plasma when the radio frequency power is provided from the dielectric body through the second region.Type: GrantFiled: October 27, 2006Date of Patent: September 20, 2011Assignee: Luxim CorporationInventors: Yian Chang, Frederick M. Espiau, legal representative, Marc DeVincentis
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Publication number: 20110221340Abstract: 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.Type: ApplicationFiled: February 14, 2011Publication date: September 15, 2011Applicant: Luxim CorporationInventors: Marc DeVincentis, Frederick M. Espiau, Yian Chang
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Patent number: 7994721Abstract: 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.Type: GrantFiled: October 27, 2006Date of Patent: August 9, 2011Assignee: Luxim CorporationInventors: Frederick M. Espiau, Anthony D. McGettigan, Yian Chang, Frederick M. Espiau, legal representative, Marc DeVincentis