Alex Luan Tran

US Patent:

6567448, May 20, 2003

Filed:

Dec 11, 1998

Appl. No.:

09/210315

Inventors:

Decai Sun - Sunnyvale CA
Ross D. Bringans - Cupertino CA
Christopher L. Chua - Mountain View CA
Philip D. Floyd - Sunnyvale CA
Eric Peeters - Fremont CA
Joel A. Kubby - Rochester NY
Alex T. Tran - Ithaca NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

H01S 500

US Classification:

372 50, 372 45

Abstract:

A III-V compound light emitter is integrated with Si-based actuators. The proposed devices take advantage of the superior optical properties of III-V compounds and the superior mechanical properties of Si, as well as mature fabrication technologies of Si-Micro-Electro-Mechanical Systems (MEMS). The emitter can be a light emitting diode (LED), a vertical cavity surface emitting laser (VCSEL) or an edge emitting laser. Electro or magnetic based actuation from Si-based actuators provides.

US Patent:

7106441, Sep 12, 2006

Filed:

Sep 26, 2003

Appl. No.:

10/672207

Inventors:

Decai Sun - Los Altos CA, US
Joel A. Kubby - Rochester NY, US
Jingkuang Chen - Rochester NY, US
Alex T. Tran - Madison NJ, US
Patrick Y. Maeda - Mountain View CA, US

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G01J 3/20

US Classification:

356328

Abstract:

A tunable microelectromechanical (MEMS) spectrophotometer with a rotating cylindrical reflective diffraction grating is integrated with a photodetector and an optical fiber light source on a Rowland circle on a monolithic silicon substrate.

US Patent:

62577395, Jul 10, 2001

Filed:

Nov 17, 1998

Appl. No.:

9/193522

Inventors:

Decai Sun - Sunnyvale CA
Alex T. Tran - Ithaca NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

F21V 21008

US Classification:

362285

Abstract:

A micromachined movable shuttle is constructed in III-V material to allow in situ placement of VCSELs on the shuttle for a solid state image scanner in optical display and printing applications. A comb drive is used to actuate the shuttle for scanning purposes. Hundreds of VCSELs may be fabricated on a large movable shuttle.

US Patent:

60543353, Apr 25, 2000

Filed:

Dec 11, 1998

Appl. No.:

9/209866

Inventors:

Decai Sun - Sunnyvale CA
Ross D. Bringans - Cupertino CA
Christopher L. Chua - Mountain View CA
Philip D. Floyd - Sunnyvale CA
Eric Peeters - Fremont CA
Joel A. Kubby - Rochester NY
Alex T. Tran - Ithaca NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

H01L 2100

US Classification:

438 23

Abstract:

A III-V compound light emitter is integrated with Si-based actuators. The Proposed devices take advantage of the superior optical properties of III-V compounds and the superior mechanical properties of Si, as well as mature fabrication technologies of Si-Micro-Electro-Mechanical Systems (MEMS). The emitter can be a light emitting diode (LED), a vertical cavity surface emitting laser (VCSEL) or an edge emitting laser. Electro or magnetic based actuation from Si-based actuators provides linear or angular movement of the light emitter.

US Patent:

62951300, Sep 25, 2001

Filed:

Dec 22, 1999

Appl. No.:

9/469892

Inventors:

Decai Sun - Sunnyvale CA
Joel A. Kubby - Rochester NY
Alex T. Tran - Ithaca NY
Eric Peeters - Fremont CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G01B 902

US Classification:

356454

Abstract:

A microelectromechanically tunable Fabry-Perot spectrophotometer is provided for color sensing. Optical fiber provides light input to a Fabry-Perot filter which is adjusted by a switched capacitor circuit. Spectral intensity is sensed by an integrated photodetector.