Barret Hiroko Lippey

US Patent:

6409891, Jun 25, 2002

Filed:

Apr 29, 1994

Appl. No.:

08/236780

Inventors:

Barret Lippey - Gardena CA
Darrell A. Gleichauf - Redondo Beach CA
Weldon S. Williamson - Malibu CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

C23C 1434

US Classification:

20419236, 20419232, 20419234, 20419235, 134 1, 134 11, 134 2, 134 21, 216 58, 216 66

Abstract:

Cryofilm/organic contaminants are removed from cryogenically cooled surfaces such as spacecraft cryo-telescope mirrors by sputtering and chemical reaction with a low energy plasma having an average ion energy of not more than about 30 eV, and preferably in the approximate range of 5-20 eV. When the reactive plasmas freezing point is higher than the temperature of the surface to be cleaned, the cryofilm and embedded hydrocarbons are first removed with a non-reactive plasma having a freezing point less than the surface temperature, the reactive plasma is then used to remove residual organic contaminants left on the surface by chemical reaction, and finally another inert plasma is applied to remove reactive plasma frozen to the surface; the two inert plasmas are preferably formed from the same gas.

US Patent:

6847483, Jan 25, 2005

Filed:

Dec 21, 2001

Appl. No.:

10/028063

Inventors:

Barret Lippey - Belmont MA, US
Steve O'Dea - Wilmington MA, US
Mark Kniffin - Brookline MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

G03B 2156

US Classification:

359443, 359449

Abstract:

Selective reflective optical apparatus includes a projection screen. The projection screen has structure constructed and arranged to selectively reflect only incident optical energy of a predetermined number of narrow bands of optical wavelength regions.

US Patent:

7110175, Sep 19, 2006

Filed:

Feb 27, 2004

Appl. No.:

10/789688

Inventors:

Barret Lippey - Belmont MA, US
Steve O'Dea - Wilmington MA, US

Assignee:

Bose Corporation - Farmington MA

International Classification:

G03B 21/56
G03B 21/60

US Classification:

359443, 359449, 359459

Abstract:

An assembly for use in a projection screen that includes a metal reflective surface, and a layer above the metal reflective surface to reduce an amount of difference in reflectivity of the metal reflective surface for light polarized in two different directions.

US Patent:

7241014, Jul 10, 2007

Filed:

Dec 2, 2004

Appl. No.:

11/002613

Inventors:

Barret Lippey - Belmont MA, US
Stephen R. O'Dea - Wilmington MA, US
James F. Shanley - Westboro MA, US
Michael O'Connell - Northborough MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

G02B 27/22

US Classification:

353 8, 353 20, 349 15, 349 9, 359465

Abstract:

Methods and apparatus for forming two orthogonally polarized beams of light from an unpolarized beam of light using one of at least two different image modes, the forming includes a color filtering process that is based on the image mode being used, and projecting the two orthogonally polarized beams to form an image on a viewing surface. Methods and apparatus for separating an unpolarized light beam into four beams as a function of wavelength and polarization; selectively modulating the four beams respectively using four light valves; and combining the four modulated beams to generate two orthogonally polarized light beams.

US Patent:

7515336, Apr 7, 2009

Filed:

Feb 27, 2004

Appl. No.:

10/789695

Inventors:

Barret Lippey - Belmont MA, US
Mark Kniffin - Brookline MA, US
Stephen R. O'Dea - Wilmington MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

G03B 21/56

US Classification:

359443, 359449

Abstract:

A projection screen that includes a multilayer, multiband, single stack device that selectively reflects light with wavelengths in plurality of narrow wavelength bands, and methods for making the screen. The multilayer, multiband, single stack device may be an etalon device. The multiple layers may be deposited on a diffusing substrate. The projection screen may also include a polarizer that coacts with a projector. The projector polarizes the projected light in the narrow wavelength bands into the same polarity and the screen reflects the light with the same polarization and does not reflect light of another polarization. The polarizer may include substrate with a thin polarizing coating. The screen may include a matte surfaced diffuser.

US Patent:

7517091, Apr 14, 2009

Filed:

May 12, 2005

Appl. No.:

11/127531

Inventors:

Barret Lippey - Belmont MA, US
Donald E. Nelsen - Winchester MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

G03B 21/14

US Classification:

353 84, 353121, 353 79, 359449

Abstract:

Methods, apparatus and system for controlling ambient light to produce controlled ambient light having predefined optical spectrum characteristics in order to effect a modified color gamut of a reflected image that is reflected from a surface. The reflected image including reflected portions of the controlled ambient light and reflected portions of a projected image directed from an image projector to the surface. The reflected image having a first color gamut in the presence of uncontrolled ambient light. The reflected image having the modified color gamut in the presence of the controlled ambient light.

US Patent:

7520624, Apr 21, 2009

Filed:

Jul 16, 2004

Appl. No.:

10/893461

Inventors:

Barret Lippey - Belmont MA, US
Stephen R. O'Dea - Wilmington MA, US
James F. Shanley - Westboro MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

G03B 21/20
G03B 21/26

US Classification:

353 85, 353 94

Abstract:

Broader spectrum light is enhanced with light of a narrower spectrum.

US Patent:

7535636, May 19, 2009

Filed:

Oct 11, 2006

Appl. No.:

11/548373

Inventors:

Barret Lippey - Belmont MA, US
Steve O'Dea - Wilmington MA, US
Mark Kniffin - Brookline MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

G03B 21/56

US Classification:

359443, 359449

Abstract:

Selective reflective optical apparatus includes a projection screen. The projection screen has structure constructed and arranged to selectively reflect only incident optical energy of a predetermined number of narrow bands of optical wavelength regions.