Michael B Larson

US Patent:

6791629, Sep 14, 2004

Filed:

Mar 19, 2001

Appl. No.:

09/811732

Inventors:

Jacob Moskovich - Cincinnati OH
Michael B. Larson - Amelia OH
Richard J. Wessling - Milford OH

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H04N 931

US Classification:

348779, 348781, 359649, 359650, 359772, 359780

Abstract:

Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U ) and negative second lens units (U ) where the negative second lens units are customized in terms of at least one optical property for at least two of the colors of light produced by the CRTs with which the units are used. The at least one optical property is not spectral transmission, although the second lens units can also be customized for spectral transmission. As illustrated in FIGS. B- F and FIGS. B- F, such customization of a non-transmissive property provides an effective and cost effective approach for improving the color performance of CRT projection lens systems. Constructions for the positive first lens unit which improve image contrast and reduce manufacturing costs are also provided.

US Patent:

6844981, Jan 18, 2005

Filed:

Sep 25, 2002

Appl. No.:

10/254226

Inventors:

Stephen Magocs - Knoxville TN, US
Gregory W. Keck - Knoxville TN, US
Michael B. Larson - Georgetown OH, US
Carl J. Gilman - Florence KY, US

Assignee:

Koninklijke Philips Electronics N.V. - Eindhoven

International Classification:

G02B 300
G02B 900
G02B 908

US Classification:

359649, 359738

Abstract:

In a projection display system for example, a projection lens includes a non-radially symmetrical light stopped that is painted or otherwise applied directly to the surface of an optical lens element of the projection lines.

US Patent:

6922295, Jul 26, 2005

Filed:

Sep 19, 2003

Appl. No.:

10/665950

Inventors:

Robin S. Glassburn - Batavia OH, US
E. Gregory Fulkerson - Amelia OH, US
Michael B. Larson - Georgetown OH, US
David M. Snively - Cincinnati OH, US
Donald Lee Keyes - Mariemont OH, US
Brian L. Dawes - Batavia OH, US
Daniel G. Meiser - Butler KY, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G02B007/02
H04N003/22

US Classification:

359819, 359820, 359821, 348745, 348746

Abstract:

A lens assembly adapted to be connected to a CRT and affixed to mounting structure in a projection television cabinet. The lens assembly includes a tubular lens mount having a longitudinal axis and at least a first optical lens element mounted along the longitudinal axis. A tubular focus mount extends along the longitudinal axis and fastening and locking structure connects the lens mount to the focus mount after a focus mount position is obtained. A CRT coupler is formed integrally with the focus mount and includes structure for securing a CRT and for securing the coupler to the mounting structure within the television cabinet. A second optical lens element is mounted to the CRT coupler. A flexible bladder may be used to contain coolant fluid between the CRT and the coupler.

US Patent:

7019793, Mar 28, 2006

Filed:

Aug 3, 2004

Appl. No.:

10/910186

Inventors:

Jacob Moskovich - Cincinnati OH, US
Michael B. Larson - Georgetown OH, US
Richard J. Wessling - Milford OH, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H04N 9/31
H04N 5/74

US Classification:

348779, 348781, 359650, 359772, 359780, 359649

Abstract:

Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U) and negative second lens units (U) where the negative second lens units are customized in terms of at least one optical property for at least two of the colors of light produced by the CRTs with which the units are used. The at least one optical property is not spectral transmission, although the second lens units can also be customized for spectral transmission. As illustrated in FIGS. B–F and FIGS. B–F, such customization of a non-transmissive property provides an effective and cost effective approach for improving the color performance of CRT projection lens systems. Constructions for the positive first lens unit which improve image contrast and reduce manufacturing costs are also provided.

US Patent:

7133084, Nov 7, 2006

Filed:

Dec 22, 2005

Appl. No.:

11/315725

Inventors:

Jacob Moskovich - Cincinnati OH, US
Michael B. Larson - Georgetown OH, US
Richard J. Wessling - Milford OH, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H04N 9/31
H04N 5/74

US Classification:

348779, 348781, 359650, 359772, 359780, 359649

Abstract:

Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U) and negative second lens units (U) where the negative second lens units are customized in terms of at least one optical property for at least two of the colors of light produced by the CRTs with which the units are used. The at least one optical property is not spectral transmission, although the second lens units can also be customized for spectral transmission. As illustrated in FIGS. B–F and FIGS. B–F, such customization of a non-transmissive property provides an effective and cost effective approach for improving the color performance of CRT projection lens systems. Constructions for the positive first lens unit which improve image contrast and reduce manufacturing costs are also provided.

US Patent:

20070217769, Sep 20, 2007

Filed:

Apr 13, 2007

Appl. No.:

11/734992

Inventors:

Christian Super - Cincinnati OH, US
Michael Larson - Wilton CT, US
Robert Soullier - Fairfield OH, US
James Bird - West Chester OH, US

International Classification:

H04N 5/00

US Classification:

386126000

Abstract:

A method and a kit for conducting marketing research in which respondents evaluate a program and commercials using DVD technology.