Richard F Corey

US Patent:

7871165, Jan 18, 2011

Filed:

Nov 30, 2007

Appl. No.:

11/948048

Inventors:

Barry D. Silverstein - Rochester NY, US
Richard P. Corey - Rush NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03B 21/00
G03B 21/28
G03B 21/20
H04N 13/00
H04N 9/47
H04N 13/04
G02B 27/22

US Classification:

353 7, 353 8, 353 81, 353 85, 348 42, 348 55, 359462, 359464

Abstract:

A digital image projector includes a first polarized light source; a second polarized light source that is orthogonal in polarization state to the first polarized light source; a polarization beamsplitter disposed to direct light of either the first or second polarization along a common illumination axis; a MEMS spatial light modulator; and projection optics for delivering imaging light from the MEMS spatial light modulator.

US Patent:

8016422, Sep 13, 2011

Filed:

Oct 28, 2008

Appl. No.:

12/259307

Inventors:

Barry D. Silverstein - Rochester NY, US
Joseph R. Bietry - Rochester NY, US
Robert Metzger - Fairport NY, US
Gary E. Nothhard - Hilton NY, US
Richard P. Corey - Rush NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03B 21/14

US Classification:

353 20

Abstract:

Etendue maintaining polarization switching occurs, according to various embodiments, with a mirror that quickly transitions between two positions. Light having uniform polarization is transmitted to the mirror. Light reflected off of the mirror in one of the two positions has its polarization changed, whereas light reflected off of the mirror in the other of the two positions has its polarization maintained. Thereafter, the polarization-changed light and the polarization-maintained light easily may be recombined in an entendue-maintaining manner. Because the recombined light includes two different polarization states, stereoscopic images may be generated.

US Patent:

8136948, Mar 20, 2012

Filed:

May 18, 2011

Appl. No.:

13/110111

Inventors:

Barry D. Silverstein - Rochester NY, US
Joseph R. Bietry - Rochester NY, US
Robert Metzger - Fairport NY, US
Gary E. Nothhard - Hilton NY, US
Richard P. Corey - Rush NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03B 21/14
G02B 26/08
G02B 26/10
G02B 26/12
G02B 5/30
G02B 27/28

US Classification:

353 20, 3592251, 35948501

Abstract:

Etendue maintaining polarization switching occurs, according to various embodiments, with a mirror that quickly transitions between two positions. Light having uniform polarization is transmitted to the mirror. Light reflected off of the mirror in one of the two positions has its polarization changed, whereas light reflected off of the mirror in the other of the two positions has its polarization maintained. Thereafter, the polarization-changed light and the polarization-maintained light easily may be recombined in an entendue-maintaining manner. Because the recombined light includes two different polarization states, stereoscopic images may be generated.

US Patent:

8142021, Mar 27, 2012

Filed:

Jun 25, 2009

Appl. No.:

12/491288

Inventors:

Barry D. Silverstein - Rochester NY, US
Richard P. Corey - Rush NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03B 21/00
G03B 21/26
H04N 13/04

US Classification:

353 7, 353 10, 353 94, 348 51

Abstract:

In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can include a light intensity sensor in an image path, in a light-source subsystem light-dump path, in a light-modulation subsystem light-dump path, in a position to measure light leaked from optical components, or combinations thereof.

US Patent:

8162483, Apr 24, 2012

Filed:

Jun 25, 2009

Appl. No.:

12/491275

Inventors:

Barry D. Silverstein - Rochester NY, US
Richard P. Corey - Rush NY, US
David R. Dowe - Rochester NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03B 21/14

US Classification:

353 31, 353 85, 353 94, 362231

Abstract:

In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can include a light intensity sensor in an image path, in a light-source subsystem light-dump path, in a light-modulation subsystem light-dump path, in a position to measure light leaked from optical components, or combinations thereof.

US Patent:

8220938, Jul 17, 2012

Filed:

Jun 25, 2009

Appl. No.:

12/491279

Inventors:

Barry D. Silverstein - Rochester NY, US
Richard P. Corey - Rush NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03B 21/20
G03B 21/00
G01J 1/32

US Classification:

353 85, 353 7, 250205

Abstract:

In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can include a light intensity sensor in an image path, in a light-source subsystem light-dump path, in a light-modulation subsystem light-dump path, in a position to measure light leaked from optical components, or combinations thereof.

US Patent:

8237777, Aug 7, 2012

Filed:

Jun 25, 2009

Appl. No.:

12/491267

Inventors:

Barry D. Silverstein - Rochester NY, US
Richard P. Corey - Rush NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

H04N 13/02

US Classification:

348 46

Abstract:

In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can include a light intensity sensor in an image path, in a light-source subsystem light-dump path, in a light-modulation subsystem light-dump path, in a position to measure light leaked from optical components, or combinations thereof.

US Patent:

8444275, May 21, 2013

Filed:

Aug 12, 2010

Appl. No.:

12/854919

Inventors:

Andrew F. Kurtz - Macedon NY, US
Richard P. Corey - Rush NY, US
Allen D. Bellinger - Webster NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03B 21/20

US Classification:

353 85, 353 94

Abstract:

A color projection display in which at least one color channel includes: a light source assembly including a multiplicity of pulse modulated light sources providing an aggregate light beam; a light modulation control subsystem; illumination optics to direct the aggregate light beam to an image modulation plane; and a spatial light modulator in the image modulation plane. The light modulation control subsystem senses an aggregate light intensity signal for the aggregate light beam and controls the pulse modulation parameters for the multiplicity of pulse-modulated light sources responsive to the sensed aggregate light intensity signal to reduce light intensity fluctuations in the aggregate light beam within the imaging time interval.