Patents by Inventor Walter P. Lapatovich
Walter P. Lapatovich 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: 9171712Abstract: A lamp to produce white light includes an envelope; and a composition disposed in the envelope and including an initiator; a primary halide; and a secondary halide, wherein the primary halide, in a presence of the secondary halide, has a vapor pressure that is greater than a vapor pressure in an absence of the secondary halide, and the composition is configured to emit white light in a presence of an electrical discharge in the envelope.Type: GrantFiled: July 5, 2014Date of Patent: October 27, 2015Assignee: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGYInventors: John J Curry, Walter P Lapatovich, Edgar G Estupinan
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Publication number: 20140320003Abstract: A lamp to produce white light includes an envelope; and a composition disposed in the envelope and including an initiator; a primary halide; and a secondary halide, wherein the primary halide, in a presence of the secondary halide, has a vapor pressure that is greater than a vapor pressure in an absence of the secondary halide, and the composition is configured to emit white light in a presence of an electrical discharge in the envelope.Type: ApplicationFiled: July 5, 2014Publication date: October 30, 2014Applicant: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGYInventors: JOHN J. CURRY, WALTER P. LAPATOVICH, EDGAR G ESTUPINAN
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Patent number: 8651681Abstract: There is herein described a luminescent ceramic converter that comprises a flat, monolithic piece of a ceramic material containing a luminescent species wherein a concentration of the luminescent species in a peripheral region of the converter is lower than in a central region of the converter.Type: GrantFiled: November 10, 2010Date of Patent: February 18, 2014Assignee: Osram Sylvania Inc.Inventors: John F. Kelso, Walter P. Lapatovich
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Patent number: 8575831Abstract: There is described an EHID lamp that comprises a field applicator, a means for coupling RF power to the field applicator, and a discharge vessel; the discharge vessel being disposed within the field applicator and containing a discharge medium; the field applicator being comprised of a solid, transparent or translucent dielectric material and having an optical control surface and a conductive coating that substantially covers its external surfaces. By combining functions served by otherwise individual components, the EHID lamp of this invention has the potential for reducing parts count, improving RF coupling to the plasma, reducing shadowing, and improving reliability.Type: GrantFiled: March 10, 2010Date of Patent: November 5, 2013Assignee: OSRAM SYLVANIA Inc.Inventors: Walter P. Lapatovich, Scott J. Butler
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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: 8476831Abstract: A dielectric-loaded field applicator and an EHID lamp assembly are provided wherein the applicator comprises a helical resonator having a cylindrical dielectric core and a helical conductor, the dielectric core having a helical groove extending along its surface substantially from end to end; the helical conductor being contained in the helical groove and connectable at one end to a power source, the dielectric core being comprised of a dielectric material having a relative permittivity greater than about 3, preferably polycrystalline alumina. The EHID lamp assembly includes two opposed dielectric-loaded applicators with a discharge vessel supported between them.Type: GrantFiled: February 25, 2010Date of Patent: July 2, 2013Assignee: OSRAM SYLVANIA Inc.Inventor: Walter P. Lapatovich
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Publication number: 20120217871Abstract: There is described an EHID lamp that comprises a field applicator, a means for coupling RF power to the field applicator, and a discharge vessel; the discharge vessel being disposed within the field applicator and containing a discharge medium; the field applicator being comprised of a solid, transparent or translucent dielectric material and having an optical control surface and a conductive coating that substantially covers its external surfaces. By combining functions served by otherwise individual components, the EHID lamp of this invention has the potential for reducing parts count, improving RF coupling to the plasma, reducing shadowing, and improving reliability.Type: ApplicationFiled: March 10, 2010Publication date: August 30, 2012Applicant: OSRAM SYLVANIA INC.Inventors: Walter P. Lapatovich, Scott J. Butler
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Patent number: 8247972Abstract: A ceramic discharge lamp and a method of making the lamp includes a ceramic discharge chamber with two concave parts that are attached to each other at a seam, and a ceramic reflector directly attached to an exterior surface of the discharge chamber at the seam, or directly attached to a ceramic capillary that is attached to one of the two concave parts. The lamp finds particular application where focused light is required, such as injection of light into a fiber optic device. The lamp can be very small and has an advantage that the discharge chamber is isolated from the reflective surfaces so that the optically active parts of the reflector are not covered with salt from the preferred metal halide lamp fill.Type: GrantFiled: May 15, 2008Date of Patent: August 21, 2012Assignee: Osram Sylvania Inc.Inventors: Walter P. Lapatovich, Jeffrey T. Neil
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Patent number: 8188486Abstract: An optical disk for use in converting light emitted from a light-emitting diode chip to white light. The optical disk includes a tapered surface such that a center area of the disk has a width greater than a width of an outer area of the disk. The optical disk is formed of a silicone having at least one weight percent mix of phosphor. Various embodiments of this generally described optical disk are also presented.Type: GrantFiled: September 16, 2008Date of Patent: May 29, 2012Assignee: Osram Sylvania Inc.Inventors: Walter P. Lapatovich, David Hamby, Adam Scotch, John Selverian
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Publication number: 20120113617Abstract: There is herein described a luminescent ceramic converter that comprises a flat, monolithic piece of a ceramic material containing a luminescent species wherein a concentration of the luminescent species in a peripheral region of the converter is lower than in a central region of the converter.Type: ApplicationFiled: November 10, 2010Publication date: May 10, 2012Applicant: OSRAM SYLVANIA INC.Inventors: John F. Kelso, Walter P. Lapatovich
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Publication number: 20110316419Abstract: A dielectric-loaded field applicator and an EHID lamp assembly are provided wherein the applicator comprises a helical resonator having a cylindrical dielectric core and a helical conductor, the dielectric core having a helical groove extending along its surface substantially from end to end; the helical conductor being contained in the helical groove and connectable at one end to a power source, the dielectric core being comprised of a dielectric material having a relative permittivity greater than about 3, preferably polycrystalline alumina. The EHID lamp assembly includes two opposed dielectric-loaded applicators with a discharge vessel supported between them.Type: ApplicationFiled: February 25, 2010Publication date: December 29, 2011Applicant: OSRAM SYLVANIA INC.Inventor: Walter P. Lapatovich
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Publication number: 20110310608Abstract: A lamp (10) has a concave reflector (12) that includes an opening (14) in the bottom thereof and is substantially symmetrically arrayed about a longitudinal axis (16). A light source (18) is positioned in the opening (14) and has a symmetry axis (19) that is coaxial with the longitudinal axis (16) of the reflector (12). The light source (18) comprises a hollow ceramic member (20) with an inner surface (22) and an outer surface (24). First and second electrically conductive traces (26, 28) and first and second rows (29, 31) of first and second electrically conductive pads (30, 32) connected by the electrically conductive traces (26, 28) are formed on the outer surface (24). Light emitting diodes (34) are associated with at least some of the electrically conductive pads (30, 32); and a heat-conducting mechanism (36) is contained within the hollow ceramic member (20) for removing heat generated by the light emitting diodes (34) when the light emitting diodes (34) are operating.Type: ApplicationFiled: June 18, 2010Publication date: December 22, 2011Applicant: OSRAM SYLVANIA INC.Inventors: Walter P. Lapatovich, David W. Hamby, William D. Koenigsberg, Adam M. Scotch
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Patent number: 7923908Abstract: A novel metal halide reflector lamp is described wherein the reflector lamp has a passive optical element to scramble, color mix, and otherwise commingle the light emitted by the metal halide burner. The optical element is placed close to the radiating plasma volume to intercept a large solid angle. Preferably, the optical element substantially intercepts the emitted light within a solid angle that has its vertex at the center of the discharge volume of the burner and is subtended by the open end of the reflector. The optical element can be designed to scatter, reflect or refract the light emanating in this solid angle which otherwise would not impinge on the primary optical control surface of the reflector.Type: GrantFiled: September 27, 2007Date of Patent: April 12, 2011Assignee: Osram Sylvania Inc.Inventor: Walter P. Lapatovich
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Patent number: 7923932Abstract: A high intensity arc discharge lamp having a short metal seal plug running hotter than typical of capillary seals, enables a lamp with a metal fill to achieve a vapor pressure higher than the one set by the cold spot temperature typically of a capillary seal lamp. Corrosive fill materials, such as halogens are excluded. Zinc may be used to in starting the lamp.Type: GrantFiled: August 27, 2007Date of Patent: April 12, 2011Assignee: Osram Sylvania Inc.Inventors: Walter P. Lapatovich, James Avallon, John Selverian
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Publication number: 20100067241Abstract: An optical disk for use in converting light emitted from a light-emitting diode chip to white light. The optical disk includes a tapered surface such that a center area of the disk has a width greater than a width of an outer area of the disk. The optical disk is formed of a silicone having at least one weight percent mix of phosphor. Various embodiments of this generally described optical disk are also presented.Type: ApplicationFiled: September 16, 2008Publication date: March 18, 2010Inventors: Walter P. LAPATOVICH, David Hamby, Adam M. Scotch, John Selverian
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Patent number: 7663318Abstract: The restrike time for re-light up of an arc discharge lamp may be decreased by including at least one refractory bimetallic start up electrode that provides a shorter arc path intermediate the main arc path in a cool state, but when heated withdraws to have a relatively longer arc path. The longer arc path in the hot state results in a relatively higher path impedance that can be used by itself or in combination with a supplemental impedance device to extinguish the starting arc in favor of the main arc. The withdrawn bimetallic starting electrode then does not interfere with the main arc function.Type: GrantFiled: September 18, 2007Date of Patent: February 16, 2010Assignee: OSRAM SYLVANIA Inc.Inventors: William D Koenigsberg, Adam Scotch, Walter P Lapatovich, Victor Perez
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Publication number: 20090284153Abstract: A ceramic discharge lamp and a method of making the lamp includes a ceramic discharge chamber with two concave parts that are attached to each other at a seam, and a ceramic reflector directly attached to an exterior surface of the discharge chamber at the seam, or directly attached to a ceramic capillary that is attached to one of the two concave parts. The lamp finds particular application where focused light is required, such as injection of light into a fiber optic device. The lamp can be very small and has an advantage that the discharge chamber is isolated from the reflective surfaces so that the optically active parts of the reflector are not covered with salt from the preferred metal halide lamp fill.Type: ApplicationFiled: May 15, 2008Publication date: November 19, 2009Applicant: OSRAM SYLVANIA INC.Inventors: Walter P. Lapatovich, Jeffrey T. Neil
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Publication number: 20090085455Abstract: A novel metal halide reflector lamp is described wherein the reflector lamp has a passive optical element to scramble, color mix, and otherwise commingle the light emitted by the metal halide burner. The optical element is placed close to the radiating plasma volume to intercept a large solid angle. Preferably, the optical element substantially intercepts the emitted light within a solid angle that has its vertex at the center of the discharge volume of the burner and is subtended by the open end of the reflector. The optical element can be designed to scatter, reflect or refract the light emanating in this solid angle which otherwise would not impinge on the primary optical control surface of the reflector.Type: ApplicationFiled: September 27, 2007Publication date: April 2, 2009Applicant: OSRAM SYLVANIA INC.Inventor: Walter P. Lapatovich
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Publication number: 20090072740Abstract: The restrike time for re-light up of an arc discharge lamp may be decreased by including at least one refractory bimetallic start up electrode that provides a shorter arc path intermediate the main arc path in a cool state, but when heated withdraws to have a relatively longer arc path. The longer arc path in the hot state results in a relatively higher path impedance that can be used by itself or in combination with a supplemental impedance device to extinguish the starting arc in favor of the main arc. The withdrawn bimetallic starting electrode then does not interfere with the main arc function.Type: ApplicationFiled: September 18, 2007Publication date: March 19, 2009Applicant: OSRAM SYLVANIA INC.Inventors: William D. Koenigsberg, Adam Scotch, Walter P. Lapatovich, Victor Perez
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Publication number: 20090058300Abstract: A high intensity arc discharge lamp having a short metal seal plug running hotter than typical of capillary seals, enables a lamp with a metal fill to achieve a vapor pressure higher than the one set by the cold spot temperature typically of a capillary seal lamp. Corrosive fill materials, such as halogens are excluded. Zinc may be used to in starting the lamp.Type: ApplicationFiled: August 27, 2007Publication date: March 5, 2009Applicant: OSRAM SYLVANIA INCInventors: Walter P. Lapatovich, James Avallon, John Selverian