Yu J Wang

US Patent:

6992826, Jan 31, 2006

Filed:

Sep 25, 2001

Appl. No.:

09/965033

Inventors:

Yu Wang - La Crescenta CA, US

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G02B 1/10

US Classification:

359585, 359578, 359589, 359584, 349105, 349106, 345 88, 348744

Abstract:

Devices based on surface plasmon filters having at least one metal-dielectric interface to support surface plasmon waves. A multi-layer-coupled surface plasmon notch filter is provided to have more than two symmetric metal-dielectric interfaces coupled with one another to produce a transmission spectral window with desired spectral profile and bandwidth. Such notch filters can form various color filtering devices for color flat panel displays.

US Patent:

6998600, Feb 14, 2006

Filed:

Jun 30, 2003

Appl. No.:

10/612442

Inventors:

Yu Wang - La Crescenta CA, US

Assignee:

The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC

International Classification:

G02B 6/06

US Classification:

25022728, 25022729, 2502272, 250216

Abstract:

A miniature, ultra-high resolution, and color scanning microscope using microchannel and solid-state technology that does not require focus adjustment. One embodiment includes a source of collimated radiant energy for illuminating a sample, a plurality of narrow angle filters comprising a microchannel structure to permit the passage of only unscattered radiant energy through the microchannels with some portion of the radiant energy entering the microchannels from the sample, a solid-state sensor array attached to the microchannel structure, the microchannels being aligned with an element of the solid-state sensor array, that portion of the radiant energy entering the microchannels parallel to the microchannel walls travels to the sensor element generating an electrical signal from which an image is reconstructed by an external device, and a moving element for movement of the microchannel structure relative to the sample. Discloses a method for scanning samples whereby the sensor array elements trace parallel paths that are arbitrarily close to the parallel paths traced by other elements of the sensor array.

US Patent:

7912307, Mar 22, 2011

Filed:

Jun 22, 2007

Appl. No.:

11/821063

Inventors:

Yu Wang - La Crescenta CA, US

International Classification:

G06K 9/40
G06K 9/36
G06K 9/32

US Classification:

382254, 382280, 382299

Abstract:

The present disclosure includes an image processing technique that is capable to increase spatial resolution of single frame images beyond diffraction limit. If an image is taken by diffraction limited optical system with regularly spaced pixel detectors, and if the spacing of pixels of the detectors is much small than the diffraction pattern, then the spatial resolution of the image can be increased beyond the diffraction limit by using neighboring-pixel-optical-transfer-function (NPOTF) in Fourier Domain with periodical boundary conditions.

US Patent:

8374134, Feb 12, 2013

Filed:

Aug 26, 2009

Appl. No.:

12/547834

Inventors:

Yu Albert Wang - Cerritos CA, US
Vijayalakshmi R. Raveendran - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04Q 7/00

US Classification:

370329, 370466

Abstract:

In general, this disclosure relates to techniques for transmitting data for applications using one or more available channels of a spectrum. One example method comprises transforming data into a digital broadcast format, identifying at least one available channel of a spectrum, and transmitting the transformed data in the at least one identified available channel.

US Patent:

20020067446, Jun 6, 2002

Filed:

Dec 4, 2000

Appl. No.:

09/730500

Inventors:

Yu Wang - La Crescenta CA, US

International Classification:

G02F001/1335

US Classification:

349/113000

Abstract:

Optically efficient liquid crystal display devices that implement an optically reflective coating in an opaque area on a LCD panel and another optical reflector to redirect the light incident to the opaque area to transmit through the liquid crystal layer.

US Patent:

60316535, Feb 29, 2000

Filed:

Aug 27, 1998

Appl. No.:

9/141843

Inventors:

Yu Wang - Pasadena CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G02F 103
G02B 110

US Classification:

359247

Abstract:

Interference filters and filter arrays based on thin-metal film interference filters having at least one dielectric layer formed between two thin-metal films to form a Fabry-Perot cavity.

US Patent:

59868082, Nov 16, 1999

Filed:

Oct 10, 1997

Appl. No.:

8/949151

Inventors:

Yu Wang - La Crescenta CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G02B 110

US Classification:

359585

Abstract:

A surface plasmon filter having two symmetric metal-dielectric interfaces coupled with each other to produce a transmission optical wave at a surface plasmon resonance wavelength at one interface from a p-polarized input beam on the other interface.

US Patent:

62785400, Aug 21, 2001

Filed:

Mar 26, 1999

Appl. No.:

9/277080

Inventors:

Yu Wang - La Crescenta CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G02F 103

US Classification:

359245

Abstract:

Efficient color filtering and beam steering by combining the total internal reflection and the electro-optic effect in a special way.