Gregory Scott May

US Patent:

7349155, Mar 25, 2008

Filed:

Nov 8, 2004

Appl. No.:

10/984537

Inventors:

Brian C. Samuels - Fremont CA, US
Shih-Yuan Wang - Palo Alto CA, US
Gregory J. May - Corvallis OR, US
Stanley Williams - Portola Valley CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G03B 21/60
G02B 27/00
G02B 5/04
G03F 5/00
G02F 1/1335

US Classification:

359459, 359454, 359601, 359614, 359615, 359893, 349114

Abstract:

A reflector comprises a core and a first dielectric mirror formed over at least a portion of the core to reflect light having a preselected wavelength. The reflector may comprise a plurality of dielectric mirrors formed concentrically over the first dielectric mirror to reflect light having the preselected wavelength. The multiple dielectric mirrors may have different diffraction indices. A layer of such reflectors deposited onto the reflective surface of a projection screen may enhance the reflective selectivity of the screen to the preselected wavelength. Reflectors formed to reflect different wavelengths may be deposited onto the reflective surface to enhance selectivity to the different wavelengths and minimize reflection of ambient light.

US Patent:

7924310, Apr 12, 2011

Filed:

May 31, 2006

Appl. No.:

11/444938

Inventors:

Jeffrey M. DiCarlo - Menlo Park CA, US
Gary Dispoto - Mountain View CA, US
Gregory J. May - Corvallis OR, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

H04N 7/18
G06K 9/00

US Classification:

348144, 382162

Abstract:

Image data processing methods, image data processing systems, and articles of manufacture are described. According to one aspect, an image data processing method includes accessing initial image data of a first image representation of a scene, selecting one of a plurality of imaging conditions, wherein the selected one of the imaging conditions is different than an initial one of the imaging conditions used to generate the initial image data, and processing the initial image data using the selected one of the imaging conditions to provide processed image data of a second image representation of the scene different from the first image representation of the scene, wherein the second image representation of the scene represents the scene as if it were captured according to the selected one of the imaging conditions.