公开(公告)号：US20220390569A1

公开(公告)日：2022-12-08

申请号：US17303606

申请日：2021-06-03

Applicant: Microvision, Inc.

Inventor： Henry J. Baron ,  Alga Lloyd Nothern, III ,  Christopher Brian Adkins ,  Jonathan A. Morarity

IPC: G01S7/481 ,  G02B26/10 ,  G01S7/484

Abstract: The embodiments described herein provide systems and methods that can improve performance in scanning laser devices. Specifically, the systems and methods utilize a non-uniform variation in optical expansion coupled with variation in the energy level of laser light pulses to provide an improved effective range over a scanning area. In general, the improved effective range varies over the scan field, with relatively long effective range in some areas of the scan field and relatively short effective range in other areas of the scan field. This varying range over the scan field is facilitated by expansion optics that provide a non-uniform variation in optical expansion for laser light pulses relative to position along a first axis in the scan field and by a light source controller that varies the energy level of the laser light pulses according to position along the first axis of the scan field.

公开(公告)号：US11287644B2

公开(公告)日：2022-03-29

申请号：US16275409

申请日：2019-02-14

Applicant: Microvision, Inc.

Inventor： Jonathan A. Morarity ,  Matthew Ellis ,  Christopher Brian Adkins

IPC: G02B26/12 ,  G02B26/10 ,  G03B21/00 ,  H04N9/31 ,  G02B26/08 ,  H04N3/02 ,  H04N3/08 ,  H04N3/00

Abstract: A mechanically resonant system exhibits a resonant mode frequency response. A conductor is included on a resonant member within the mechanically resonant system. A current in the conductor causes a modification of the resonant mode frequency response when in the presence of a magnetic field. The modification of the resonant mode frequency response may include an offset in the natural frequency of the mechanically resonant system.

公开(公告)号：US20210088778A1

公开(公告)日：2021-03-25

申请号：US16579223

申请日：2019-09-23

Applicant: Microvision, Inc.

Inventor： Jonathan Cross ,  Christopher Brian Adkins

IPC: G02B26/10 ,  H04N9/31

Abstract: A scanning laser projection system includes a virtual protective housing circuit to automatically reduce power levels of visible laser light pulses when necessary to render the laser projection system eye-safe. IR laser light pulses are scanned out in front of visible laser light pulses in a field of view, and emitted power of visible laser light pulses is modulated based on attributes of reflections of the IR laser light pulses.

公开(公告)号：US20200300983A1

公开(公告)日：2020-09-24

申请号：US16358695

申请日：2019-03-20

Applicant: Microvision, Inc.

Inventor： Jonathan A. Morarity ,  Christopher Brian Adkins

IPC: G01S7/486 ,  G01S17/10 ,  G01S7/487

Abstract: A light detection and ranging system modulates laser light pulses with a channel signature to encode transmitted pulses with channel information. The modulated laser light pulses may be scanned into a field of view. Received reflections not modulated with the same channel signature are rejected. Multiple light pulses of different wavelengths may be similarly or differently modulated.

公开(公告)号：US20200264427A1

公开(公告)日：2020-08-20

申请号：US16275409

申请日：2019-02-14

Applicant: Microvision, Inc.

Inventor： Jonathan A. Morarity ,  Matthew Ellis ,  Christopher Brian Adkins

IPC: G02B26/12 ,  G02B26/10 ,  G02B26/08 ,  H04N9/31 ,  G03B21/00

Abstract: A mechanically resonant system exhibits a resonant mode frequency response. A conductor is included on a resonant member within the mechanically resonant system. A current in the conductor causes a modification of the resonant mode frequency response when in the presence of a magnetic field. The modification of the resonant mode frequency response may include an offset in the natural frequency of the mechanically resonant system.

公开(公告)号：US09167217B2

公开(公告)日：2015-10-20

申请号：US13875821

申请日：2013-05-02

Applicant: Microvision, Inc.

Inventor： Scott Woltman ,  Robert James Jackson ,  Christopher Brian Adkins

IPC: G03B21/00 ,  H04N9/31

CPC classification number: H04N9/3135 ,  H01S5/0427

Abstract: A scanning laser projector drives laser light sources with waveforms for higher efficiency. Optical light power values for pixels are mapped to amplitude/duration pairs. Laser diodes are driven with electrical currents having the amplitude for time period specified by the duration. For increasing optical light power values, amplitude values are increased, and then durations are increased.

Abstract translation: 扫描激光投影机驱动具有更高效率的波形的激光光源。 像素的光功率值被映射到幅度/持续时间对。 激光二极管由具有由持续时间指定的时间段的振幅的电流驱动。 为了增加光功率值，振幅值增加，然后持续时间增加。

公开(公告)号：US20140327835A1

公开(公告)日：2014-11-06

申请号：US13875821

申请日：2013-05-02

Applicant: MICROVISION, INC.

Inventor： Scott Woltman ,  Robert James Jackson ,  Christopher Brian Adkins

IPC: H04N5/74

CPC classification number: H04N9/3135 ,  H01S5/0427

Abstract: A scanning laser projector drives laser light sources with waveforms for higher efficiency. Optical light power values for pixels are mapped to amplitude/duration pairs. Laser diodes are driven with electrical currents having the amplitude for time period specified by the duration. For increasing optical light power values, amplitude values are increased, and then durations are increased.

Abstract translation: 扫描激光投影机驱动具有更高效率的波形的激光光源。 像素的光功率值被映射到幅度/持续时间对。 激光二极管由具有由持续时间指定的时间段的振幅的电流驱动。 为了增加光功率值，振幅值增加，然后持续时间增加。