公开(公告)号：US10303044B2

公开(公告)日：2019-05-28

申请号：US15715730

申请日：2017-09-26

Applicant: Microvision, Inc.

Inventor： Jonathan A. Morarity ,  Damon M. Domjan

IPC: H04N9/31 ,  G02B26/10 ,  G02B26/12 ,  G03B21/00 ,  H04N5/74

Abstract: A scanning mirror resonates on a first axis and moves on a second axis at a frequency dictated by a sync signal. The period of movement on the second axis is not necessarily an integer multiple of the period of movement on the first axis. A drive circuit excites movement of the mirror. The drive circuit adds a position offset to the signal that excites movement on the second axis. The position offset is capable of causing the resonant movement on the first axis to scan a substantially identical trajectory for at least a portion of each period on the second axis.

公开(公告)号：US20180152680A1

公开(公告)日：2018-05-31

申请号：US15365670

申请日：2016-11-30

Applicant: Microvision, Inc.

Inventor： Dale Eugene Zimmerman ,  Matthieu Saracco ,  Jonathan A. Morarity

IPC: H04N9/31

CPC classification number: H04N9/3155 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3164 ,  H04N9/3167 ,  H04N9/317

Abstract: A scanning projector includes one or more scanning mirrors that reflect a light beam to create an image. The beam is created by multiple laser light sources, at least two of which create light at substantially the same color. The multiple laser light sources are used alternately to illuminate successive pixels, lines, and/or frames. Speckle reduction is achieved because of spatial overlap of the light beams produced by the multiple laser light sources.

公开(公告)号：US09612433B2

公开(公告)日：2017-04-04

申请号：US14718508

申请日：2015-05-21

Applicant: Microvision, Inc.

Inventor： Patrick J. McVittie ,  Jonathan A. Morarity ,  Damon M. Domjan

IPC: G02B26/08 ,  G02B26/10 ,  G02B27/01

CPC classification number: G02B26/0841 ,  G02B26/0833 ,  G02B26/10 ,  G02B27/0101 ,  H03L7/06 ,  H04N9/3135 ,  H04N9/3194

Abstract: A drive circuit for a resonant system provides an excitation signal having an amplitude and a phase. The resonant system provides a feedback signal representing an oscillation amplitude. The amplitude of the excitation signal is reduced for a substantially constant feedback signal amplitude by modifying the excitation signal phase.