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公开(公告)号：US20180270459A1
公开(公告)日：2018-09-20
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
CPC分类号： H04N9/3185 , G03B21/147 , H04N9/3129 , H04N9/3135 , H04N9/315 , H04N9/3194
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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公开(公告)号：US10009585B2
公开(公告)日：2018-06-26
申请号：US14987010
申请日：2016-01-04
申请人： Microvision, Inc.
发明人： Jari Honkanen , Robert James Jackson , P. Selvan Viswanathan , Jonathan A. Morarity , David W. Armour
CPC分类号： H04N9/3185 , G03B21/147 , H04N9/3129 , H04N9/3135 , H04N9/315 , H04N9/3194
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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公开(公告)号：US09140971B2
公开(公告)日：2015-09-22
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：US11163042B2
公开(公告)日：2021-11-02
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：US20170195647A1
公开(公告)日：2017-07-06
申请号：US14987010
申请日：2016-01-04
申请人： Microvision, Inc.
发明人： Jari Honkanen , Robert James Jackson , P. Selvan Viswanathan , Jonathan A. Morarity , David W. Armour
CPC分类号： H04N9/3185 , G03B21/147 , H04N9/3129 , H04N9/3135 , H04N9/315 , H04N9/3194
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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公开(公告)号：US09693029B1
公开(公告)日：2017-06-27
申请号：US14978766
申请日：2015-12-22
申请人： Microvision, Inc.
发明人： Robert James Jackson
CPC分类号： H04N9/3194 , G01J1/0425 , G01J1/0466 , G02B3/0006 , G02B26/101 , G02B26/105 , G02B27/0101 , G02B2027/011 , H04N3/08 , H04N9/14 , H04N9/3135 , H04N9/3161
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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公开(公告)号：US09596440B2
公开(公告)日：2017-03-14
申请号：US14483468
申请日：2014-09-11
申请人： Microvision, Inc.
CPC分类号： H04N9/3155 , G02B26/101 , G02B27/104 , G03B21/2053 , H04N9/3129 , H04N9/3179 , H04N9/3194
摘要： A scanning laser projector includes a proximity sensor and a planarity detector. When the proximity sensor detects an object closer than a proximity threshold, laser power is turned down. The scanning laser projector can measure distance at a plurality of projection points in the projector's field of view. If the projection points lie substantially in a plane, laser power may be turned back up.
摘要翻译： 扫描激光投影仪包括接近传感器和平面度检测器。 当接近传感器检测到比接近阈值更近的物体时，激光功率被降低。 扫描激光投影仪可以在投影仪的视场中测量多个投影点处的距离。 如果投影点基本上位于平面中，则激光功率可以被重新上升。
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公开(公告)号：US20160080709A1
公开(公告)日：2016-03-17
申请号：US14483468
申请日：2014-09-11
申请人： Microvision, Inc.
IPC分类号： H04N9/31
CPC分类号： H04N9/3155 , G02B26/101 , G02B27/104 , G03B21/2053 , H04N9/3129 , H04N9/3179 , H04N9/3194
摘要： A scanning laser projector includes a proximity sensor and a planarity detector. When the proximity sensor detects an object closer than a proximity threshold, laser power is turned down. The scanning laser projector can measure distance at a plurality of projection points in the projector's field of view. If the projection points lie substantially in a plane, laser power may be turned back up.
摘要翻译： 扫描激光投影仪包括接近传感器和平面度检测器。 当接近传感器检测到比接近阈值更近的物体时，激光功率被降低。 扫描激光投影仪可以在投影仪的视野中测量多个投影点处的距离。 如果投影点基本上位于平面中，则可以将激光功率重新上升。
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公开(公告)号：US09104038B2
公开(公告)日：2015-08-11
申请号：US13870169
申请日：2013-04-25
申请人： Microvision, Inc.
CPC分类号： G02B27/48 , G03B21/2013 , G03B21/2033 , G03B21/2053 , G03B33/06 , G09G3/025 , H04N9/31 , H04N9/3105 , H04N9/3129 , H04N9/3164 , H04N9/3185
摘要： A scanning projector includes a scanning mirror that sweep a beam in two dimensions. The beam is created by multiple laser light sources, at least two of which create light at substantially the same wavelength. A first of the two light sources is driven up to a transition point past which both of the two light sources are driven (equally or unequally).
摘要翻译： 扫描投影仪包括扫描二维扫描光束的扫描镜。 光束由多个激光光源产生，其中至少两个以基本上相同的波长产生光。 两个光源中的第一个被驱动到过渡点，两个光源都被驱动（同样或不平等）。
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公开(公告)号：US20140320829A1
公开(公告)日：2014-10-30
申请号：US13870169
申请日：2013-04-25
申请人： MICROVISION, INC.
IPC分类号： G03B21/28
CPC分类号： G02B27/48 , G03B21/2013 , G03B21/2033 , G03B21/2053 , G03B33/06 , G09G3/025 , H04N9/31 , H04N9/3105 , H04N9/3129 , H04N9/3164 , H04N9/3185
摘要： A scanning projector includes a scanning mirror that sweep a beam in two dimensions. The beam is created by multiple laser light sources, at least two of which create light at substantially the same wavelength. A first of the two light sources is driven up to a transition point past which both of the two light sources are driven (equally or unequally).
摘要翻译： 扫描投影仪包括扫描二维扫描光束的扫描镜。 光束由多个激光光源产生，其中至少两个以基本上相同的波长产生光。 两个光源中的第一个被驱动到过渡点，两个光源都被驱动（同样或不平等）。
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