Hakan Urey

US Patent:

6515781, Feb 4, 2003

Filed:

Apr 20, 2001

Appl. No.:

09/839849

Inventors:

John R. Lewis - Bellevue WA
Hakan Urey - Redmond WA
Bernard G. Murray - Seattle WA

Assignee:

Microvision, Inc. - Bothell WA

International Classification:

G02B 2608

US Classification:

359204, 359215, 347234, 348747

Abstract:

A display apparatus includes a scanning assembly that scans about two or more axes, typically in a raster pattern. A plurality of light sources emit light from spaced apart locations toward the scanning assembly such that the scanning assembly simultaneously scans more than one of the beams. The light sources are positioned such that their beams each illuminate discrete regions of the image field that are substantially non-overlapping with respect to the other discrete regions. The image is thus formed from a set of âtilesâ. By activating a first light source during a forward sweep of the mirror and activating a second light source during a reverse sweep of the mirror, two halves a common line can be written during a single sweep of the mirror. Shifting the position of the sources such that the two halves are aligned reduces raster pinch. In alternative embodiments, the same approach is used for imaging.

US Patent:

6639719, Oct 28, 2003

Filed:

May 15, 2001

Appl. No.:

09/858712

Inventors:

Clarence T. Tegreene - Redmond WA
John R. Lewis - Bellevue WA
Hakan Urey - Redmond WA

Assignee:

Microvision, Inc. - Bothell WA

International Classification:

G03B 2156

US Classification:

359443, 359449, 359454, 359459, 359489, 359495

Abstract:

An image system includes a screen and a beam generator. The screen has first and second regions with adjustable brightness levels. The beam generator directs first and second electromagnetic off beams and first and second electromagnetic on beams onto the first and second regions, respectively. The first and second off beams respectively change the brightness levels of the first and second regions according to a first polarity, and the first and second on beams change the brightness levels of the first and second regions according to a second polarity. For example, the system may simultaneously scan multiple tiles of an image onto respective regions of the display screen with respective image (on) beams, and erase the regions with respective erase (off) beams. Scanning an image as multiple tiles often provides the image with a higher resolution for a given scan rate, and using on and off beams often increases the quality of the image.

US Patent:

6714331, Mar 30, 2004

Filed:

Jan 10, 2003

Appl. No.:

10/340274

Inventors:

John R. Lewis - Bellevue WA
Hakan Urey - Redmond WA
Bernard G. Murray - Seattle WA

Assignee:

Microvision, Inc. - Bothell WA

International Classification:

G02B 2608

US Classification:

359204, 359215, 347234, 348747

Abstract:

A display apparatus includes a scanning assembly that scans about two or more axes, typically in a raster pattern. A plurality of light sources emit light from spaced apart locations toward the scanning assembly such that the scanning assembly simultaneously scans more than one of the beams. The light sources are positioned such that their beams each illuminate discrete regions of the image field that are substantially non-overlapping with respect to the other discrete regions. The image is thus formed from a set of âtilesâ. By activating a first light source during a forward sweep of the mirror and activating a second light source during a reverse sweep of the mirror, two halves a common line can be written during a single sweep of the mirror. Shifting the position of the sources such that the two halves are aligned reduces raster pinch. In alternative embodiments, the same approach is used for imaging.

US Patent:

6755536, Jun 29, 2004

Filed:

May 15, 2001

Appl. No.:

09/858285

Inventors:

Clarence T. Tegreene - Redmond WA
John R. Lewis - Bellevue WA
Hakan Urey - Redmond WA

Assignee:

Microvision, Inc. - Bothell WA

International Classification:

G03B 2126

US Classification:

353 94, 353 10, 353 31, 353121, 353122, 348744, 348745, 359459, 359443

Abstract:

An image projection system includes an image generator and first and second projection screens. The image generator respectively generates the first and second portions of the image on the first and second projection screens. The first projection screen projects the first portion of the image in a first color, and the second projection screen projects the second portion of the image in a second color. Such an image projection system is often less complex and less expensive than a conventional image projection system such as a projection television system. In addition, such a projection system often provides a higher-quality image than a conventional image projection system.

US Patent:

6768588, Jul 27, 2004

Filed:

Jul 26, 2002

Appl. No.:

10/206177

Inventors:

Hakan Urey - Redmond WA

Assignee:

Microvision, Inc. - Bothell WA

International Classification:

G02B 2744

US Classification:

359566, 359562, 359568, 359630, 345 7, 345 8

Abstract:

A display system includes a diffraction grating that generates exit-pupil images, where one of the exit-pupil images has a first intensity and the remaining exit-pupil images each have or approximately have a second intensity that is less than the first intensity. The system also includes a filter that attenuates the intensity of the one exit-pupil image. In one example, the filter attenuates the 0 -order exit-pupil image so that all of the exit-pupil images have the same or approximately the same intensities.

US Patent:

6795221, Sep 21, 2004

Filed:

Aug 5, 1999

Appl. No.:

09/369676

Inventors:

Hakan Urey - Redmond WA

Assignee:

Microvision, Inc. - Bothell WA

International Classification:

G02B 2608

US Classification:

359199, 359196, 359212, 359204, 348746, 347233

Abstract:

A display or image capture apparatus includes a scanning assembly that scans about two or more axes, typically in a raster pattern. A plurality of light sources emit light from spaced apart locations toward the scanning assembly and the scanning assembly simultaneously scans more than one of the beams. The light sources are positioned so each beam illuminates a discrete region of the image field that is substantially non-overlapping with the other regions. Each line of the image is formed from segments where two or more of the segments define a line of an image. Because the lines are made from discrete segments, the problem of raster pinch is reduced. The achievable resolution of the display for a given scan angle and mirror size is increased relative to a mirror sweeping a single beam. Segments of different wavelengths can be overlapped to produce a color display.

US Patent:

6954308, Oct 11, 2005

Filed:

Jul 26, 2002

Appl. No.:

10/205858

Inventors:

Hakan Urey - Redmond WA, US

Assignee:

Microvision, Inc. - Bothell WA

International Classification:

G02B027/44
G02B005/18

US Classification:

359566, 359562, 359630, 345 7

Abstract:

A diffraction grating generates even-order, odd-order, and 0-order exit-pupil images. The even-order exit-pupil images have brightness levels within a first range and the odd-order exit-pupil images have brightness levels within a second range that is different from the first range. In one example, the even-order exit-pupil images are virtually invisible, i. e. , missing, the odd-order exit-pupil images have the same or approximately the same intensities, and the 0-order exit-pupil image has an intensity greater than the respective intensities of the odd-order exit-pupil images.

US Patent:

7061450, Jun 13, 2006

Filed:

Apr 9, 2002

Appl. No.:

10/118861

Inventors:

Gregory Scott Bright - Kirkland WA, US
Scott W. Straka - Kirkland WA, US
Philip C. Black - Woodbridge CT, US
James G. Moore - Guilford CT, US
John R. Lewis - Bellevue WA, US
Hakan Urey - Redmond WA, US
Clarence T. Tegreene - Redmond WA, US

Assignee:

Microvision, Inc. - Redmond WA

International Classification:

G09G 5/00

US Classification:

345 7, 8 76, 23546232, 358202

Abstract:

A scanning control circuit generates a clock signal corresponding to an expected scan timing of a resonant scanner. In one approach, the control circuit uses a pair of direct digital synthesis (DDS) integrated circuits. A first DDS chip provides a system clock that is synchronized to the monitored period of the scanner. A second DDS chip generates a frequency chirped signal that has a frequency profile corresponding to a desired pixel clock timing. To control phase precisely, four complementary clock signals are weighted and mixed at light source drivers to produce relative phase shifts for different light sources.