Abdeslam Hafidi

US Patent:

8143801, Mar 27, 2012

Filed:

Apr 3, 2009

Appl. No.:

12/418482

Inventors:

Marc DeVincentis - Palo Alto CA, US
Abdeslam Hafidi - Cupertino CA, US
Richard Gilliard - Morgan Hill CA, US
Dan O'Hare - Livermore CA, US

Assignee:

Luxim Corporation - Sunnyvale CA

International Classification:

H05B 41/24

US Classification:

315248, 315 39, 315234

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.

US Patent:

8188662, May 29, 2012

Filed:

Dec 17, 2010

Appl. No.:

12/972041

Inventors:

Abdeslam Hafidi - Cupertino CA, US
Dan O'Hare - Livermore CA, US
Marc DeVincentis - Palo Alto CA, US

Assignee:

Luxim Corporation - Sunnyvale CA

International Classification:

H05B 41/16

US Classification:

313607, 315248

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.

US Patent:

8299710, Oct 30, 2012

Filed:

Nov 4, 2011

Appl. No.:

13/289254

Inventors:

Abdeslam Hafidi - Cupertino CA, US
Sandeep Mudunuri - Sunnyvale CA, US

Assignee:

Luxim Corporation - Sunnyvale CA

International Classification:

H01J 7/16

US Classification:

313635, 313607, 315248, 315149

Abstract:

A lamp and methods of forming are shown. In one example, a dielectric layer is formed over a gap between conductors in a plasma lamp. Electric arcing is reduced or eliminated, thus allowing tighter gaps and/or higher voltages. In one example a glass frit method is used to apply the dielectric layer. A lamp is shown with a barrier layer that prevents tarnish such as tarnish from sulfur exposure. The barrier layer reduces or prevents degradation of the lamp due to conversion of a conductor material to non-conductive tarnish material.

US Patent:

8436546, May 7, 2013

Filed:

Feb 22, 2012

Appl. No.:

13/402078

Inventors:

Marc DeVincentis - Palo Alto CA, US
Abdeslam Hafidi - Cupertino CA, US
Richard Gilliard - Morgan Hill CA, US
Dan O'Hare - Livermore CA, US

Assignee:

Luxim Corporation - Sunnyvale CA

International Classification:

H05B 41/00
H05B 41/24

US Classification:

315248, 315 39, 315234

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.

US Patent:

8487543, Jul 16, 2013

Filed:

Oct 19, 2007

Appl. No.:

12/444352

Inventors:

Marc DeVincentis - Palo Alto CA, US
Abdeslam Hafidi - Cupertino CA, US
Sandeep Mudunuri - Sunnyvale CA, US

Assignee:

Luxim Corporation - Sunnyvale CA

International Classification:

H05B 41/24
H05H 1/00

US Classification:

315248, 31511121

Abstract:

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.

US Patent:

20090026911, Jan 29, 2009

Filed:

Jul 23, 2008

Appl. No.:

12/178433

Inventors:

Abdeslam Hafidi - Cupertino CA, US
Sandeep Mudunuri - Sunnyvale CA, US

Assignee:

Luxim Corporation - Sunnyvale CA

International Classification:

H01J 17/26
H01J 9/02
B05D 5/12

US Classification:

31323161, 445 23, 427 58

Abstract:

A lamp and methods of forming are shown. In one example, a dielectric layer is formed over a gap between conductors in a plasma lamp. Electric arcing is reduced or eliminated, thus allowing tighter gaps and/or higher voltages. In one example a glass frit method is used to apply the dielectric layer. A lamp is shown with a barrier layer that prevents tarnish such as tarnish from sulfur exposure. The barrier layer reduces or prevents degradation of the lamp due to conversion of a conductor material to non-conductive tarnish material.

US Patent:

20090026975, Jan 29, 2009

Filed:

Jul 23, 2008

Appl. No.:

12/178427

Inventors:

Paul Ralston - Palo Alto CA, US
Abdeslam Hafidi - Cupertino CA, US

Assignee:

Luxim Corporation - Sunnyvale CA

International Classification:

H05B 41/24

US Classification:

315246

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.

US Patent:

20090167201, Jul 2, 2009

Filed:

Nov 7, 2008

Appl. No.:

12/266743

Inventors:

Markus Duelli - San Francisco CA, US
Richard Gilliard - Morgan Hill CA, US
Abdeslam Hafidi - Cupertino CA, US
Gregg Hollingsworth - Tempe AZ, US

International Classification:

H05B 41/24

US Classification:

315248

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.