Kelley E Rivoire

US Patent:

20070247067, Oct 25, 2007

Filed:

Apr 19, 2007

Appl. No.:

11/737381

Inventors:

Michael Segal - Cambridge MA, US
Kelley Rivoire - Stanford CA, US
Madhusudan Singh - Chandler AZ, US
Marc Baldo - Cambridge MA, US

International Classification:

H01L 51/54
H01L 51/52

US Classification:

313506000, 313504000, 428690000, 428917000, 257E51044

Abstract:

A light emitting device comprising a first electrode, a second electrode, an emissive material between the first and second electrodes and a mixing agent separate from the emissive material is disclosed. In certain examples, the mixing agent may be effective to increase a fraction of excitons formed as a singlet state.

US Patent:

20130294722, Nov 7, 2013

Filed:

Apr 5, 2013

Appl. No.:

13/857413

Inventors:

The Board of Trustees of the Leland Stanford Junior University - , US
Kelley Rivoire - Palo Alto CA, US
Sonia M. Buckley - Los Altos Hills CA, US
Jesse Lu - East Palo Alto CA, US

International Classification:

G02F 1/35
G02F 1/365

US Classification:

385 14, 385122

Abstract:

Intersecting photonic crystal structures provide overlapping cavity modes that can have widely separated resonant frequencies. These photonic crystal structures can be either 1-D photonic crystal structures or 2-D photonic crystal structures. If a material having the zincblende crystal structure is employed (e.g., GaAs), it is preferred for the crystal orientation to be (110) or (111), because these orientations can provide three wave mixing for three TE-like modes.

US Patent:

20150355403, Dec 10, 2015

Filed:

Jan 30, 2013

Appl. No.:

14/763577

Inventors:

- Fort Collins CO, US
David A Fattal - Palo Alto CA, US
Kelley Elise Rivoire - Palo Alto CA, US

International Classification:

F21V 8/00
G02B 5/18

Abstract:

A directional grating-based backlight includes a light guide to guide light and three sets of diffraction gratings. The diffraction grating sets are to selectively couple out portions of light to be guided by the light guide. The light is to propagate within the light guide in three different propagation directions separated in angle by about 120 degrees. The sets of diffraction gratings are to couple out different portions of the guided light as substantially collimated light using diffraction coupling. The substantially collimated light is to be emitted from the directional grating-based backlight in substantially the same direction.

US Patent:

20140209821, Jul 31, 2014

Filed:

Jan 31, 2013

Appl. No.:

13/755582

Inventors:

Kelley Elise Rivoire - Palo Alto CA, US
David A. Fattal - Palo Alto CA, US

Assignee:

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. - Houston TX

International Classification:

G01J 1/04

US Classification:

2505781

Abstract:

An example apparatus may include a light source for illuminating a sample, an objective lens positioned on a light path extending from the sample, a lenslet array having a plurality of lenslets and positioned along the light path to receive light from the objective lens. The lenslet array may be positioned along the light path at substantially a Fourier plane of the sample. The example apparatus may also include a detector positioned along the light path approximately one lenslet focal length from the lenslet array. The plurality of lenslets of the lenslet array may correspond to portions of the detector. Each lenslet of the lenslet array may transmit to a corresponding portion of the detector an image of the same portion of the sample from a different viewing angle.