Yi I Zheng

US Patent:

7659220, Feb 9, 2010

Filed:

Dec 3, 2008

Appl. No.:

12/327207

Inventors:

Yi Zheng - Lynnfield MA, US
Richard C. Marlor - Beverly MA, US
George C. Wei - Weston MA, US

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

C03C 8/14
C03C 8/18

US Classification:

501 17, 501 15, 501 19

Abstract:

There is described a sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics comprising: a mixture of SiO, at least one other metal oxide, and a silicon additive comprising at least one of silicon metal or a silicide. The silicon additive acts to suppress the formation of nitrogen bubbles during the sealing of articles comprised of aluminum nitride or aluminum oxynitride ceramics, e. g. , as in the case of a ceramic discharge vessel for a high intensity discharge lamp.

US Patent:

7741237, Jun 22, 2010

Filed:

Jan 20, 2010

Appl. No.:

12/690587

Inventors:

Yi Zheng - Lynnfield MA, US
Richard C. Marlor - Beverly MA, US
George C. Wei - Weston MA, US

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

C04B 35/581
C03C 8/14
C03C 8/18
H01J 17/16
H01J 17/18

US Classification:

501 984, 501 15, 501 17, 501 19, 501 32, 501 961, 501 963, 313636, 220 21 R

Abstract:

There is described a sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics comprising: a mixture of SiO, at least one other metal oxide, and a silicon additive comprising at least one of silicon metal or a silicide. The silicon additive acts to suppress the formation of nitrogen bubbles during the sealing of articles comprised of aluminum nitride or aluminum oxynitride ceramics, e. g. , as in the case of a ceramic discharge vessel for a high intensity discharge lamp.

US Patent:

7800287, Sep 21, 2010

Filed:

Aug 24, 2007

Appl. No.:

11/844713

Inventors:

Yi Zheng - Reading MA, US
Bruce Bateman - Richmond KY, US
Matthew A. Stough - Exeter NH, US
Madis Raukas - Charlestown MA, US

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

H01J 5/16
H01J 63/04
F21V 9/00

US Classification:

313112, 362293, 313502

Abstract:

White-light efficiency from a light emitting diode is enhanced by recycling inwardly penetrating light outwardly by application of a multi-layer, thin film filter between the LED die and the phosphor layer. This procedure increases the package extraction efficiency.

US Patent:

7952282, May 31, 2011

Filed:

Apr 29, 2008

Appl. No.:

12/111464

Inventors:

George C. Wei - Weston MA, US
Yi Zheng - Lynnfield MA, US

Assignee:

OSRAM SYLVANIA Inc. - Danvers MA

International Classification:

H01J 5/32
H01J 17/18

US Classification:

313623, 313625, 420 52, 420 64

Abstract:

There is described a brazing alloy having a first component comprising a source of molybdenum and a source of aluminum and a second component comprising boron, wherein a weight ratio of said second component to said first component is not greater than 1:20. The addition of boron results a substantially lower melting point than alloys employing molybdenum and aluminum alone. It is suitable for use in discharge vessels having a hollow bodies selected from the group of monocrystalline alumina, polycrystalline alumina and aluminum nitride; metallic electrode holders fitted into ends of the hollow body; and sealed thereto by a braze.

US Patent:

8334646, Dec 18, 2012

Filed:

Sep 27, 2010

Appl. No.:

12/891281

Inventors:

Alan Piquette - Peabody MA, US
John Kelso - Exeter NH, US
Nathan Zink - Salem MA, US
John Nappi - Burlington MA, US
Yi Zheng - Lynnfield MA, US

Assignee:

OSRAM SYLVANIA Inc. - Danvers MA

International Classification:

H01J 1/62
B05D 5/06
F21V 5/04

US Classification:

313501, 313483

Abstract:

A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes multiple layers of microlenses deposited thereon. The microlenses may have an index of refraction different from an index of refraction of the wavelength-converting plate.

US Patent:

20120261688, Oct 18, 2012

Filed:

Apr 13, 2011

Appl. No.:

13/086185

Inventors:

Madis Raukas - Charlestown MA, US
Adam M. Scotch - Amesbury MA, US
Yi Zheng - Lynnfield MA, US
Darshan Kundaliya - Beverly MA, US

International Classification:

H01L 33/50

US Classification:

257 98, 438 29, 257E33068

Abstract:

A wavelength-converting structure for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting structure includes a thin film structure having a non-uniform top surface. The non-uniform top surface is configured increase extraction of light from the top surface of a wavelength-converting structure.

US Patent:

20120326196, Dec 27, 2012

Filed:

Mar 30, 2011

Appl. No.:

13/583504

Inventors:

Yi Zheng - Lynnfield MA, US

Assignee:

OSRAM SYLVANIA, INC. - Danvers MA

International Classification:

C09K 11/80
H01L 33/50

US Classification:

257 98, 2523014 R, 257E33061

Abstract:

There is herein described a phosphor for use in LED applications and particularly in phosphor-conversion LEDs (pc-LEDs). The phosphor has a composition represented by (YCe)(AlSc)Owherein 0

US Patent:

20130002129, Jan 3, 2013

Filed:

Jun 29, 2012

Appl. No.:

13/538542

Inventors:

Yi Zheng - Lynnfield MA, US
Nathan Zink - North Andover MA, US
Victor Perez - Lawrence MA, US

International Classification:

H05B 33/14
C09K 11/80

US Classification:

313503, 2523014 R

Abstract:

There is herein described a phosphor for use in white pc-LED applications. The phosphor has a composition represented by (YGdCe)(AlSc)Owherein 0