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公开(公告)号:US11137498B2
公开(公告)日:2021-10-05
申请号:US15894744
申请日:2018-02-12
申请人: Microvision, Inc.
摘要: A scanning rangefinding system includes a MEMS device with a scanning mirror that sweeps a beam in two dimensions. Actuating circuits receive angular extents and offset information and provide signal stimulus to the MEMS device to control the amount and direction of mirror deflection on two axes. The scan angle and offset information may be modified to create a repeating pattern of different fields of view.
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公开(公告)号:US20190331774A1
公开(公告)日:2019-10-31
申请号:US15962924
申请日:2018-04-25
申请人: Microvision, Inc.
发明人: Robert James Jackson
摘要: A scanning light detection and ranging (LIDAR) system includes a scanning apparatus that scans laser light pulses sinusoidally in a vertical direction, and quasi-statically through angular extents in a horizontal direction. Multiple light sensors, each with a substantially nonoverlapping field of view, are multiplexed during the scan of the laser light pulses. Multiple scanning LIDAR systems may be combined to increase the effective horizontal angular extents.
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公开(公告)号:US10104353B2
公开(公告)日:2018-10-16
申请号:US15478951
申请日:2017-04-04
申请人: Microvision, Inc.
发明人: Robert James Jackson
摘要: A scanning projector and method is provided that generates a feedback signal from at least one photodetector. In the scanning projector, a scanning mirror is configured to reflect laser light into an image region and an over scanned region. The at least one photodetector is configured to receive a portion of the reflected laser light impacting the over scanned region, and provides the feedback signal responsive to the received portion of light. This feedback signal can then be used to provide precise control of the scanning mirror.
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4.
公开(公告)号:US08840255B2
公开(公告)日:2014-09-23
申请号:US13650768
申请日:2012-10-12
申请人: Microvision, Inc.
发明人: Robert James Jackson
IPC分类号: G03B21/28
CPC分类号: G09G5/10 , G09G3/025 , G09G3/2014 , G09G3/2051 , G09G3/346 , G09G2320/04 , G09G2320/041 , G09G2320/0633 , G09G2320/064 , G09G2380/10 , H04N9/3135
摘要: A scanning laser projector includes a scanning mirror that moves in a sinusoidal motion on at least one axis. Pixels are displayed by modulating a laser beam that is reflected by the scanning mirror. Pixels are generated using light pulses of different duty cycles based on the position and/or angular velocity of the laser beam.
摘要翻译: 扫描激光投影仪包括在至少一个轴上以正弦运动移动的扫描镜。 通过调制由扫描反射镜反射的激光束来显示像素。 基于激光束的位置和/或角速度,使用不同占空比的光脉冲来产生像素。
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5.
公开(公告)号:US20140104501A1
公开(公告)日:2014-04-17
申请号:US13650768
申请日:2012-10-12
申请人: MICROVISION, INC.
发明人: Robert James Jackson
CPC分类号: G09G5/10 , G09G3/025 , G09G3/2014 , G09G3/2051 , G09G3/346 , G09G2320/04 , G09G2320/041 , G09G2320/0633 , G09G2320/064 , G09G2380/10 , H04N9/3135
摘要: A scanning laser projector includes a scanning mirror that moves in a sinusoidal motion on at least one axis. Pixels are displayed by modulating a laser beam that is reflected by the scanning mirror. Pixels are generated using light pulses of different duty cycles based on the position and/or angular velocity of the laser beam.
摘要翻译: 扫描激光投影仪包括在至少一个轴上以正弦运动移动的扫描镜。 通过调制由扫描反射镜反射的激光束来显示像素。 基于激光束的位置和/或角速度,使用不同占空比的光脉冲来产生像素。
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公开(公告)号:US20190250273A1
公开(公告)日:2019-08-15
申请号:US15894744
申请日:2018-02-12
申请人: Microvision, Inc.
CPC分类号: G01S17/89 , G01S7/4817 , G01S17/08 , G06T2207/10028
摘要: A scanning rangefinding system includes a MEMS device with a scanning mirror that sweeps a beam in two dimensions. Actuating circuits receive angular extents and offset information and provide signal stimulus to the MEMS device to control the amount and direction of mirror deflection on two axes. The scan angle and offset information may be modified to create a repeating pattern of different fields of view.
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公开(公告)号:US20190212421A1
公开(公告)日:2019-07-11
申请号:US15865024
申请日:2018-01-08
申请人: Microvision, Inc.
CPC分类号: G01S7/4865 , G01S7/4817 , G01S17/42 , G01S17/89
摘要: Devices and methods are described that provide for scanning surfaces and generating 3-dimensional point clouds that describe the depth of the measured surface at each point. In general, the devices and methods utilize. Specifically, the depth mapping devices and methods utilize multiple receiver channels, with each receiver channel configured to have a different effective sensing range. These multiple receiver channels together provide the depth mapping device with an increased overall effective sensing range. Thus, the depth mapping device can effectively map surfaces that are closer and/or farther than could be mapped using only one receiver channel.
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公开(公告)号:US20180348347A1
公开(公告)日:2018-12-06
申请号:US15615045
申请日:2017-06-06
申请人: Microvision, Inc.
摘要: A scanning display system includes two detectors for rangefinding. Round trip times-of-flight are measured for reflections of laser pulses received at the detectors. A proportional correction factor is determined based at least in part on the geometry of the scanning display system. The proportional correction factor is applied to the measured times-of-flight to create estimates of more accurate times-of-flight.
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公开(公告)号:US20150116672A1
公开(公告)日:2015-04-30
申请号:US14069183
申请日:2013-10-31
申请人: Microvision, Inc.
CPC分类号: G03B21/2086 , G01R31/2635 , G03B21/2053 , G03B21/26 , H04N9/3129 , H04N9/3155 , H04N9/3194
摘要: A scanning laser projector detects obstructions in a projector field of view using a proximity detector that detects infrared light at a photodetector. The photodetector is tested with an additional infrared light source. The additional infrared light source may also be used as proximity detector that can detect a local obstruction blocking the photodetector.
摘要翻译: 扫描激光投影仪使用在光电检测器处检测红外光的接近检测器来检测投影仪视野中的障碍物。 用另外的红外光源测试光电探测器。 附加的红外光源也可以用作接近检测器,其可以检测阻挡光电检测器的局部阻塞物。
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公开(公告)号:US10218951B2
公开(公告)日:2019-02-26
申请号:US15983508
申请日:2018-05-18
申请人: Microvision, Inc.
发明人: Jari Honkanen , Robert James Jackson , P. Selvan Viswanathan , Jonathan A. Morarity , David W. Armour
摘要: Briefly, in accordance with one or more embodiments, a MEMS scanned beam projector includes a light source to emit a light beam, a scanning platform to redirect the light beam impinging on the platform, and a display controller to control the light source and the scanning platform to cause the scanning platform to scan the light beam in a vertical direction and a horizontal direction in a scan pattern to project an image onto a projection surface. The display controller is configured to correct for image distortion in the projected image by providing a compensated drive signal to the scanning platform to compensate for the image distortion.
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