JEFFREY ALAN GOHMAN
Pilots at Ornduff Rd, Beaverton, OR

7545586, Jun 9, 2009

Nov 15, 2005

11/280072

Jeffrey Alan Gohman - Hillsboro OR, US

InFocus Corporation - Wilsonville OR

G02B 13/04

359749, 359434, 359363

The wide angle lens system described herein allows projection devices (e. g. , rear projection display devices) to be more compact than would otherwise be possible. The lens system includes a wide angle lens stage and a relay lens stage. When operating as a projection device, the relay lens stage projects a distorted intermediate image to the wide angle lens stage, which projects the image for display. The distortion cause by the relay lens stage compensates (i. e. , is approximately equal and opposite) for the distortion caused by the wide angle stage. The distortion can be the image shape and/or the focal plane. When operating as a taking device, the wide angle stage provides a distorted image to the relay lens stage, which compensates for the distortion and provide a less distorted, or even non-distorted image, for capture.

6661475, Dec 9, 2003

Mar 23, 2000

09/535427

Kurt Stahl - Lake Oswego OR
Jeffrey A. Gohman - Hillsboro OR

InFocus Corporation - Wilsonville OR

G02F 11335

349 9, 349 5, 353 31

An image projector ( ) includes a light source ( ) that illuminates a three-path reflective LCD assembly ( ) that produces images for projection by a projection lens ( ). The light source produces S-polarized light rays that are received by a spectrally selective wave plate ( ) that changes a first wavelength range of light to P-polarized light rays ( ) and transmits without polarization change second and third wavelength ranges of light. A plate-type transflective polarizing beam splitter ( ) transmits the P-polarized first wavelength range light rays and reflects S-polarized second and third wavelength range light rays ( ). The P-polarized first wavelength range light rays transmit through a field lens ( ) and impinge on a first reflective LCD light valve ( ). The S-polarized second and third wavelength range light rays strike a pleochroic filter ( ), which divides them into second and third wavelength range light rays ( ) that propagate through field lenses ( ) and impinge on respective second and third LCD light valves ( ). The light rays impinging on dark state pixels on the first LCD light valve are reflected without polarization direction change and return toward the light source along their original paths.

5710668, Jan 20, 1998

May 26, 1995

8/451301

Jeffrey A. Gohman - Hillsboro OR
Robert D. Brown - Portland OR
Robert B. Wood - Beaverton OR

Flight Dynamics - Portland OR

G02B 1718, G02B 528, G02B 2702

359634

A multi-color optical display system (10) employs a multi-powered reflective combiner (20) that together with a monochromatic or partly color-corrected relay lens (16) longitudinally corrects a multi-colored image. The combiner typically includes two surfaces (82, 90) of different optical powers with a reflective coating (106, 108) on each of the surfaces. The coatings are chosen to each reflect a specific wavelength range of colored light used in the system and to transmit all other wavelengths. The curvature of each surface is dictated by the aberrations in the color image created by the relay lens. Specifically, each surface is positioned so that its focus (86, 94) coincides with the focal point (58, 60) of the corresponding color component in an intermediate image (18) created by the relay lens so that the final virtual image (22) reflected by the combiner is longitudinally color corrected.

6896375, May 24, 2005

Aug 16, 2002

10/222083

Mark David Peterson - Lake Oswego OR, US
Jeffrey Alan Gohman - Hillsboro OR, US

InFocus Corporation - Wilsonville OR

G03B021/28

353 66, 353 77

The ultra-thin rear projection display device described herein includes a wide angle lens system and one or more planar mirrors that are parallel to a screen on which an image is to be displayed. In one embodiment, the screen that has multiple groove angles to provide better illumination than screens with a single groove angle.

7253954, Aug 7, 2007

Jul 12, 2006

11/457117

Mark David Peterson - Lake Oswego OR, US
Jeffrey Alan Gohman - Hillsboro OR, US

InFocus Corporation - Wilsonville OR

G03B 21/56, G03B 21/60, G03B 21/28, G02B 3/08

359457, 359449, 359459, 359460, 359742, 353 66, 353 78

A Fresnel lens. The Fresnel lens includes an input side configured to receive the image and an output side, opposite the input side, configured to display the image. The input side includes a first facet angled to receive input light constituting at least a portion of the image. The input side also includes a second facet at least partially facing the first facet and a third facet linking the first facet to the second facet, wherein the third facet and the output side are substantially parallel.

7175287, Feb 13, 2007

Apr 15, 2004

10/825837

Jeffrey A. Gohman - Hillsboro OR, US

InFocus Corporation - Wilsonville OR

G03B 21/14, G03B 21/28, G02F 1/1335

353 79, 353 69, 353122, 348747, 349 57

A projection display device is provided. The projection display device may include an image generation device configured to generate an image and a wide angle lens system having an optical axis configured to receive the image and project the image along an optical path for display above the display device. The projection display device further may include direction changing optics configured to fold the optical path such that the optical path changes direction from a first direction to a second direction. In some embodiments, the image generation device may be positioned below the optical axis of the wide angle lens system.

7567380, Jul 28, 2009

May 24, 2005

11/137702

Mark David Peterson - Lake Oswego OR, US
Jeffrey Alan Gohman - Hillsboro OR, US

InFocus Corporation - Wilsonville OR

G03B 21/56, G03B 21/60, G03B 21/26

359449, 359455, 359457, 353 37

The ultra-thin rear projection display device described herein includes a wide angle lens system and one or more planar mirrors that are parallel to a screen on which an image is to be displayed. In one embodiment, the screen that has multiple groove angles to provide better illumination than screens with a single groove angle.

5978051, Nov 2, 1999

Oct 31, 1996

8/741950

Jeffrey A. Gohman - Hillsboro OR
Michael G. West - Portland OR

H04N 574, G02F 100

348766

An image projector is provided with a light source and a light valve positioned downstream of the light source. An optical path is defined between the light source and the light valve. To accommodate various image viewing formats, a plurality of optical integrators is positioned between the light source and the light valve. Each of the plurality of optical integrators is movable laterally of the optical path and is positionable in the optical path. Light from the light source is transmitted to the light valve through the particular optical integrator positioned in the optical path. Each optical integrator is constructed to produce a unique display format for the light transmitted therethrough to the light valve, in order the accommodate different display formats such as standard and letter-box without wasting light.

6956701, Oct 18, 2005

Apr 26, 2004

10/832716

Mark D. Peterson - Lake Oswego OR, US
T. Scott Engle - Tualatin OR, US
Jeffrey A. Gohman - Hillsboro OR, US

InFocus Corporation - Wilsonville OR

G02B027/10, G02B005/04, G03B021/00, G03B021/26, A61B001/06

359618, 359633, 359634, 359833, 359834, 359636, 353 29, 353 31, 353 84, 353 94, 362558, 600173

Embodiments of this invention include a system, method and apparatus for combining light paths of multiple colored light sources through a common integration tunnel.

7520622, Apr 21, 2009

Dec 2, 2005

11/293666

Jeffrey A. Gohman - Hillsboro OR, US

Infocus Corporation - Wilsonville OR

G03B 21/30, G03B 21/28, G03B 21/56, H04N 5/64

353 72, 353 73, 353 77, 353 78, 353119, 348794, 359460

An apparatus for a display dock with an integrated display screen are disclosed herein.