Yi Bin 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:

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

US Patent:

20130009541, Jan 10, 2013

Filed:

Jul 6, 2011

Appl. No.:

13/176952

Inventors:

Yi Zheng - Lynnfield MA, US
Mary-Ann Johnson - Rockport MA, US

Assignee:

OSRAM SYLVANIA INC. - Danvers MA

International Classification:

H01J 1/63
C09K 11/79
C09K 11/77

US Classification:

313503, 2523014 R

Abstract:

There is herein described a phosphor composition for converting the light emitted from LED dies. The phosphor composition has an emission dominant wavelength responsive to an excitation dominant wavelength. The phosphor composition includes a first phosphor, a second phosphor and a third phosphor. The phosphor composition has a first weight ratio of the first phosphor and the second phosphor, and a second weight ratio of the second phosphor and the third phosphor. The first and second weight ratios are arranged so that the emission dominant wavelength increases as the excitation dominant wavelength increases.

US Patent:

20130250544, Sep 26, 2013

Filed:

Mar 22, 2012

Appl. No.:

13/427538

Inventors:

Nathan Zink - North Andover MA, US
Madis Raukas - Lexington MA, US
Matthew A. Stough - Exeter NH, US
Yi Zheng - Lynnfield MA, US
Alan Lenef - Belmont MA, US

International Classification:

F21V 9/16
G02F 1/35

US Classification:

362 84, 359326

Abstract:

A wavelength-conversion plate is described herein. The wavelength conversion plate may include a converter of a first ceramic material and a reflector of a second ceramic material. The first ceramic material converts the primary light emitted by a light source such as a light emitting diode (LED) into a secondary light and the second ceramic material reflects the secondary light emitted by said converter. Preferably, the converter is inlaid into the reflector so that the reflector surrounds an outer edge of the converter. Such a configuration has an advantage of reducing unwanted side emissions from the converter.