Douglas H Hansen

US Patent:

6348995, Feb 19, 2002

Filed:

Mar 27, 2000

Appl. No.:

09/536874

Inventors:

Douglas P. Hansen - Spanish Fork UT
John Gunther - Torrance CA

Assignee:

Moxtek - Orem UT

International Classification:

G02B 530

US Classification:

359486, 359483, 349 96

Abstract:

An optical polarizer device that reflects light of one polarization over a controlled angular range, and improved twisted nematic liquid crystal display devices incorporating the same, is comprised of a grid of conductive elements supported on a textured substrate such that light of one polarization is transmitted through the grid while light of the orthogonal polarization is reflected. The angular distribution of the reflected light is determined by the texture of the substrate. Liquid crystal display embodiments include a configuration intended exclusively for front illumination by ambient light and a configuration which may use either front-illumination or back illumination by an internal light source.

US Patent:

6447120, Sep 10, 2002

Filed:

May 21, 2001

Appl. No.:

09/862183

Inventors:

Douglas P. Hansen - Spanish Fork UT
Raymond T. Perkins - Orem UT
Eric Gardner - Provo UT

Assignee:

Moxtex - Orem UT

International Classification:

G03B 2114

US Classification:

353 20, 359486

Abstract:

An image projection system has a wire grid polarizing beam splitter which functions as both the polarizer and the analyzer in the system. A light source produces a source light beam directed at the beam splitter which reflects one polarization and transmits the other. A liquid crystal array is disposed in either the reflected or transmitted beam. The array modulates the polarization of the beam, encoding image information thereon, and directs the modulated beam back to the beam splitter. The beam splitter again reflects one polarization and transmits the other so that the encoded image is either reflected or transmitted to a screen. The beam splitter can be an embedded wire grid polarizer with an array of parallel, elongated, spaced-apart elements sandwiched between first and second layers. The elements form a plurality of gaps between the elements which provide a refractive index less than the refractive index of the first or second layers.

US Patent:

6452724, Sep 17, 2002

Filed:

Jun 26, 2000

Appl. No.:

09/603249

Inventors:

Douglas P. Hansen - Orem UT
John Gunther - Torrance CA

Assignee:

Moxtek - Orem UT

International Classification:

G02B 530

US Classification:

359486, 359487, 359495, 359496, 359497

Abstract:

A polarizing device has an arrangement of generally parallel elements disposed in an unpolarized source light beam for transmitting polarizations perpendicular to the elements and reflecting polarizations parallel to the elements. The elements may be disposed at substantially any incidence angle and may reflect the reflected beam at substantially any angle. The elements may be disposed on a substrate or embedded in a substrate. The elements may be disposed in a curved layer. The substrate may also have a curved surface. A polarizer apparatus may also have a mirror or the like for redirecting or recapturing the transmitted or reflected beam so they have similar directions or are directed to a common area. The device may also have a wave plate or the like for changing the polarization of the transmitted or reflected beams so they have the same polarization.

US Patent:

6666556, Dec 23, 2003

Filed:

Sep 9, 2002

Appl. No.:

10/238996

Inventors:

Douglas P. Hansen - Spanish Fork UT
Raymond T. Perkins - Orem UT
Eric Gardner - Eagle Mountain UT

Assignee:

Moxtek, Inc - Orem UT

International Classification:

G03B 2114

US Classification:

353 20, 353 31

Abstract:

An image projection system includes one or more wire grid polarizing beam splitters and one or more transmissive arrays. A polarized light beams from a light source and pre-polarizer is directed towards the transmissive array which modulates the polarization of the polarized light beam by selectively altering the polarization of the polarized light beam to encode image information thereon and creating a modulated beam. The modulated beam is directed towards the wire grid polarizing beam splitter which acts as an analyzer to separate the modulated beam into reflected and transmitted beams. A screen is disposed in one of the reflected or transmitted beams to display the encoded image information. The polarizing beam splitter is oriented at an angle with respect to the modulated beam such that the reflected beam is directed away from the transmissive array. A plurality of transmissive arrays can be used for different colors.

US Patent:

6710921, Mar 23, 2004

Filed:

Jan 15, 2002

Appl. No.:

10/050301

Inventors:

Douglas P. Hansen - Orem UT
John Gunther - Torrance CA

Assignee:

Moxtek - Orem UT

International Classification:

G02B 530

US Classification:

359486, 359487, 359495, 359496, 359497, 362 19, 353 20

Abstract:

A polarizing device has an arrangement of generally parallel elements disposed in an unpolarized source light beam for transmitting polarizations perpendicular to the elements and reflecting polarizations parallel to the elements. The elements may be disposed at substantially any incidence angle and may reflect the reflected beam at substantially any angle. The elements may be disposed on a substrate or embedded in a substrate. The elements may be disposed in a curved layer. The substrate may also have a curved surface. A polarizer apparatus may also have a mirror or the like for redirecting or recapturing the transmitted or reflected beam so they have similar directions or are directed to a common area. The device may also have a wave plate or the like for changing the polarization of the transmitted or reflected beams so they have the same polarization.

US Patent:

7306338, Dec 11, 2007

Filed:

Mar 8, 2005

Appl. No.:

11/075841

Inventors:

Douglas P. Hansen - Spanish Fork UT, US
Raymond T. Perkins - Orem UT, US
Eric W. Gardner - Provo UT, US

Assignee:

Moxtek, Inc - Orem UT

International Classification:

G03B 21/14

US Classification:

353 20

Abstract:

An image projection system has a wire grid polarizing beam splitter which functions as both the polarizer and the analyzer in the system. A light source produces a source light beam directed at the beam splitter which reflects one polarization and transmits the other. A liquid crystal array is disposed in either the reflected or transmitted beam. The array modulates the polarization of the beam, encoding image information thereon, and directs the modulated beam back to the beam splitter. The beam splitter again reflects one polarization and transmits the other so that the encoded image is either reflected or transmitted to a screen. The wire grid polarizing beam splitter is capable of being oriented at various incident angles with respect to the source light beam and modulated beam, and accepts relatively divergent light.

US Patent:

7375887, May 20, 2008

Filed:

Nov 24, 2004

Appl. No.:

10/997077

Inventors:

Douglas P. Hansen - Spanish Fork UT, US
Raymond Perkins - Orem UT, US
Jim Thorne - Provo UT, US
Eric Gardner - Provo UT, US

Assignee:

Moxtek, Inc. - Orem UT

International Classification:

G02B 5/30

US Classification:

359486, 359489, 362 19

Abstract:

An optical system and method for providing a visible light beam with a desired characteristic includes a visible light source producing a visible light beam defining an optical train. An optical element is disposed in the optical train to create a modified beam, and that is capable of introducing an undesired characteristic that continuously transitions across at least a portion of the modified beam. A wire-grid polarizer is disposed in the optical train, and has a plurality of elongated elements with at least a portion that continuously transitions to a different characteristic. The wire-grid polarizer is positioned and oriented in the optical train with the different characteristic corresponding to the undesired characteristic of the modified beam to obtain a visible light beam with a desired characteristic substantially across the visible light beam.

US Patent:

7570424, Aug 4, 2009

Filed:

Dec 6, 2004

Appl. No.:

11/005927

Inventors:

Raymond T. Perkins - Orem UT, US
Cheng-Yuan Cheng - Chandler AZ, US
Douglas P. Hansen - Spanish Fork UT, US
Eric W. Gardner - Eagle Mountain UT, US

Assignee:

Moxtek, Inc. - Orem UT

International Classification:

G02B 5/30

US Classification:

359486, 359495, 359576

Abstract:

A multilayer wire-grid polarizer for polarizing light includes a stack of thin film layers disposed over a substrate, including a wire-grid array of elongated metal elements having lengths longer than a wavelength of the light and a period less than half the wavelength of the light. One of the layers can include a thin film layer with a refractive index greater than a refractive index of the substrate. One of the thin film layers can include a dielectric array of non-metal elements.

Address:

5220 S 5120 W, Kearns, UT 84118

VIN:

2B3KA53H27H646345

Make:

DODGE

Model:

CHARGER

Year:

2007