Charles David Hoyle

US Patent:

7052168, May 30, 2006

Filed:

Dec 17, 2003

Appl. No.:

10/738441

Inventors:

Kenneth A. Epstein - St. Paul MN, US
Leland R. Whitney - St. Paul MN, US
Charles D. Hoyle - Stillwater MN, US
Wade D. Kretman - Afton MN, US

Assignee:

3M Innovative Properties Company - St, Paul MN

International Classification:

F21V 7/04

US Classification:

362625, 362619, 362615

Abstract:

An illumination system includes a light guide for distributing light. Extraction structures are provided to uniformly extract light from the light guide. The structures extract more light out of the light guide when light is propagating in the light guide in a direction toward the light input area than when light is propagating in the light guide in a direction away from the light input area.

US Patent:

7141303, Nov 28, 2006

Filed:

Feb 26, 2002

Appl. No.:

10/083092

Inventors:

Timothy J. Clemens - Hastings MN, US
Timothy M. Dietz - St. Paul MN, US
Daniel R. Fronek - Woodbury MN, US
Charles D. Hoyle - Stillwater MN, US
Joseph H. Verkinderen - Lake City MN, US
Mark D. Weigel - Hugo MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 15/092
B32B 27/28
B32B 27/38

US Classification:

428416, 428413, 428414, 428418

Abstract:

The invention provides protective articles comprising a backing that comprises a fluorinated polymer and a curable adhesive on at least one layer of the backing. The protective articles of the invention may be used to provide substrates or articles of the invention having a fluorinated surface. The invention also provides methods of preparing such articles, methods of repairing appliqués, and methods of edge sealing appliqués.

US Patent:

7498534, Mar 3, 2009

Filed:

Aug 30, 2006

Appl. No.:

11/468522

Inventors:

Charles D. Hoyle - Stillwater MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

H01H 9/00

US Classification:

200314

Abstract:

A light guide for lighting keys of a keypad in handheld devices. The light guide includes a film and a light emitting diode optically coupled to it. The film provides for substantial total internal reflection of light. A surface of the film opposite the keys includes a plurality of discrete areas, and each of the areas has one or more microstructured features such that each of them extract from the film a substantial amount of light incident upon them by reflecting and redirecting the light such that it impinges upon the film beyond the critical angle for total internal reflection. The microstructured features in each of the areas are adjusted such that they obtain substantially uniform extraction of light from the light source. The light guide can provide sufficient illumination of the keys using only a single light emitting diode as the light source.

US Patent:

7608323, Oct 27, 2009

Filed:

Oct 27, 2006

Appl. No.:

11/553676

Inventors:

Timothy J. Clemens - Hastings MN, US
Charles D. Hoyle - Stillwater MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

B32B 27/12
B32B 27/04
B32B 27/08
B32B 27/28
B32B 27/38

US Classification:

4283007, 4282974, 428343, 428421

Abstract:

The invention provides protective articles comprising a backing that comprises a fluorinated polymer and a curable adhesive on at least one layer of the backing. The protective articles of the invention may be used to provide substrates or articles of the invention having a fluorinated surface. The invention also provides methods of preparing such articles, methods of repairing appliqués, and methods of edge sealing appliqués.

US Patent:

7611271, Nov 3, 2009

Filed:

Mar 19, 2007

Appl. No.:

11/688102

Inventors:

Michael A. Meis - Stillwater MN, US
David J. Lundin - Woodbury MN, US
Scott D. Gullicks - Apple Valley MN, US
Charles D. Hoyle - Stillwater MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

F21V 33/00

US Classification:

362551, 362555, 362558

Abstract:

A light injector includes a tapered solid light guide having a light input end, an opposing light output end, and a total internal reflection surface defining a longitudinal outer surface there between. The light input end includes an aperture extending into the tapered solid light guide defined by an aperture surface. A specularly reflective layer or film is disposed adjacent to the total internal reflection surface. A distance between the specularly reflective layer or film and the total internal reflection surface defines a first air gap. The aperture is configured to accept a lambertian light source.

US Patent:

7936956, May 3, 2011

Filed:

May 28, 2009

Appl. No.:

12/473842

Inventors:

Charles A. Marttila - Shoreview MN, US
Charles D. Hoyle - Stillwater MN, US
David A. Ender - New Richmond WI, US
Jaime B. Willoughby - Hugo MN, US
Robert J. DeVoe - Minneapolis MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G02B 6/34
F21V 5/00

US Classification:

385 36, 362620

Abstract:

A process comprises imagewise exposing at least a portion of a photoreactive composition to light sufficient to cause simultaneous absorption of at least two photons, thereby inducing at least one acid- or radical-initiated chemical reaction where the composition is exposed to the light, the imagewise exposing being carried out in a pattern that is effective to define at least the surface of a plurality of light extraction structures.

US Patent:

7941013, May 10, 2011

Filed:

May 17, 2007

Appl. No.:

12/299955

Inventors:

Charles A. Marttila - Shoreview MN, US
Charles D. Hoyle - Stillwater MN, US
David A. Ender - New Richmond WI, US
Jaime B. Willoughby - Hugo MN, US
Robert J. DeVoe - Minneapolis MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

G02B 6/26
F21V 7/04
F21V 7/22

US Classification:

385 31, 362620, 362626

Abstract:

A process comprises imagewise exposing at least a portion of a photoreactive composition to light sufficient to cause simultaneous absorption of at least two photons/thereby inducing at least one acid- or radical-initiated chemical reaction where the composition is exposed to the light, the imagewise exposing being carried out in a pattern that is effective to define at least the surface of a plurality of light extraction structures. Each one of the array of light extraction structures has at least one shape factor; the shape factor may vary across the array. At least one light extraction structure may have the geometric configuration of a truncated asphere.

US Patent:

8523419, Sep 3, 2013

Filed:

May 19, 2008

Appl. No.:

12/600862

Inventors:

Timothy J. Nevitt - Red Wing MN, US
Timothy J. Hebrink - Scandia MN, US
Michael F. Weber - Shoreview MN, US
Rolf W. Biernath - Wyoming MN, US
David G. Freier - St. Paul MN, US
John A. Wheatley - Lake Elmo MN, US
Andrew J. Ouderkirk - Singapore, SG
Charles D. Hoyle - Stillwater MN, US
Kristopher J. Derks - Woodbury MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

F21V 7/04

US Classification:

362613, 362301, 362346, 362612

Abstract:

An edge-lit backlight comprises a front and back reflector forming a hollow light recycling cavity having a cavity depth H and an output region of area Aout, and one or more light sources disposed proximate a periphery of the backlight to emit light into the light recycling cavity. The light sources have an average plan view source separation of SEP collectively having an active emitting area Aemit, wherein a first parameter equals Aemit/Aout and a second parameter equals SEP/H. The first parameter is in a range from 0. 0001 to 0. 1, and by the second parameter is in a range from 3 to 10. The front reflector has a hemispherical reflectivity for unpolarized visible light of R, and the back reflector has a hemispherical reflectivity for unpolarized visible light of R, and R*Ris at least 0. 70.