公开(公告)号：US20190094667A1

公开(公告)日：2019-03-28

申请号：US15715730

申请日：2017-09-26

Applicant: Microvision, Inc.

Inventor： Jonathan A. Morarity ,  Damon M. Domjan

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

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：US20160341955A1

公开(公告)日：2016-11-24

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 ,  G02B27/01 ,  G02B26/10

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.

Abstract translation: 用于谐振系统的驱动电路提供具有振幅和相位的激励信号。 谐振系统提供表示振荡幅度的反馈信号。 通过修改激励信号相位，激励信号的幅度对于基本恒定的反馈信号幅度而减小。

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：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.