Microvision, Inc.

David Lashmet

P Selvan Viswanathan

Mark Alan Champion

Mark O Freeman

Andrew T Rosen

Ray L Nicoli

An imaging system () configured to reduce perceived flicker in three-dimensional images is provided. The imaging system () can include a plurality of light sources (), a light combiner (), a light modulator () and a polarization rotator (). The light combiner () combines light received from each of the light sources into a combined beam (). A first light portion () in the combined beam has a first light portion polarization state that is different from a second light portion polarization state of a second light portion (). The light modulator () produces images by modulating the combined beam () along a projection surface (). The polarization rotator () selectively rotates a polarization state of the combined beam () in synchrony with an image refresh cycle of the imaging system. A circular polarizer () can be used to transform linear polarization states to circular polarization states.

Mixed polarization imaging system for three-dimensional projection and corresponding methods

Briefly, in accordance with one or more embodiments, an image or projection cone is projected onto a projection surface via a raster scan to generate the image, or in a light cone. Movements of two or more input sources with respect to projection cone are detected, and a determination is made whether the input sources have crossed a crossover line in the projection cone. If the input sources have moved greater than a threshold amount after crossing the crossover line, position data between the input sources may be exchanged to reflect proper position data for the input sources.

Multipoint source detection in a scanned beam display

An image projection system () includes an image projector () and an image orientation device (). The image orientation device () can be configured to cause a reference line () associated with an image () to remain aligned in a predetermined orientation on a projection surface () regardless of projection system motion. A second image orientation device () can be included as well. The second image orientation device () can be configured to cause portions of an image () to move with projection system motion while a reference line () remains stable.

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Bainbridge Island, WA, United States of America

David Lashmet