Microvision, Inc.

Kelly D Linden

Mark O Freeman

Mark Alan Champion

Wyatt Owen Davis

Margaret K Brown

Mark P Helsel

Shawn Michael Swilley

Aarti Raghavan

Joshua Mark Hudman

Joshua Owen Miller

Randall Brian Sprague

Dean R Brown

David Roy Bowman

A beam combiner has a first coating on a first side capable of imparting a first polarization rotation, and a second coating on a second side capable of imparting a second polarization rotation. A first beam impinging on the first side passes through the first and second coatings as a first beam component. Second and third beams impinging on the second side partially reflect off the second coating as a second beam component, and partially transmit through the second coating to reflect off the first coating and exit through the second coating as a third beam component. The first, second and third beam components are disposed at selected positions and have respective selected polarizations as a combined beam spot. The positions and polarization of the beams components result in a projected image having increased allowable brightness and/or having reduced speckle.

Beam combiner for a scanned beam display

Briefly, in accordance with one or more embodiments, a scanned beam display, comprises a light source to generate a beam to be scanned and a scanning platform to scan the beam into an exit cone. The scanning platform receives the beam at a selected feed angle, and the scanning platform has a surface structure to redirect the exit cone at an exit angle that is less than the feed angle.

Scanned beam display having a redirected exit cone using a diffraction grating

An image generation apparatus provides interpolation and distortion correction. The interpolation and distortion correction may be provided in one or two dimensions. Nonlinear image scan trajectories, such as sinusoidal and bi-sinusoidal trajectories are accommodated. Horizontal and vertical scan positions are determined using a linear pixel clock, and displayed pixel intensities are determined using interpolation techniques.

Image generation with interpolation of pixels on a grid to pixels on a scan trajectory

Image generation with interpolation and distortion correction

Devices are formed on a semiconductor wafer in an interdigitated relationship and are released by deep reactive ion etching. MEMS scanners are formed without a surrounding frame. Mounting pads extend outward from torsion arms. Neighboring MEMS scanners are formed with their mounting pads interdigitated such that a regular polygon cannot be formed around a device without also intersecting a portion of one or more neighboring devices. MEMS scanners may be held in their outlines by a metal layer, by small semiconductor bridges, or a combination.

Method and apparatus for making a MEMS scanner

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Lynnwood, WA, United States of America

Kelly D Linden