公开(公告)号：US20180180717A1

公开(公告)日：2018-06-28

申请号：US15390994

申请日：2016-12-27

Applicant: Microvision, Inc.

Inventor： P. Selvan Viswanathan ,  Jonathan A. Morarity ,  Alga Lloyd Nothern, III ,  Bin Xue

IPC: G01S7/48 ,  G01S7/481 ,  G01S17/88 ,  G01S17/46 ,  G06F3/0488 ,  G06F3/042

Abstract: A projection system emits light pulses in a field of view and measures properties of reflections. Properties may include time of flight and return amplitude. Foreground objects and background surfaces are distinguished, distances between foreground objects and background surfaces are determined based on reflections that are occluded by the foreground objects and other properties of the projection system.

公开(公告)号：US20180047166A1

公开(公告)日：2018-02-15

申请号：US15236133

申请日：2016-08-12

Applicant: Microvision, Inc.

Inventor： P. Selvan Viswanathan ,  Jari Honkanen ,  Douglas R. Wade ,  Bin Xue

IPC: G06T7/00 ,  G01B11/25 ,  H04N9/31

CPC classification number: G01B11/2518 ,  G01S7/4817 ,  G01S7/51 ,  G01S17/00 ,  G01S17/42 ,  G01S17/89 ,  G06T7/0057 ,  G06T7/40 ,  G06T7/521 ,  G06T2207/10028 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3164

Abstract: Devices and methods are described herein for combining image projection with surface scanning. In general, the devices and methods utilize at least one source of laser light to generate a laser beam, and scanning mirror(s) that reflect the laser beam into a pattern of scan lines. The source of light is controlled to selectively generate projected image pixels during a first portion of the pattern of scan lines, and to selectively generate depth mapping pulses during a second portion of the pattern of scan lines. The projected image pixels generate a projected image, while the depth mapping pulses are reflected from the surface, received, and used to generate a 3-dimensional point clouds that describe the measured surface depth at each point. Thus, during each scan of the pattern both a projected image and a surface depth map can be generated.

公开(公告)号：US09736439B2

公开(公告)日：2017-08-15

申请号：US14481563

申请日：2014-09-09

Applicant: Microvision, Inc.

Inventor： Bin Xue

IPC: H04N9/31 ,  G06F1/32

CPC classification number: H04N9/3135 ,  G02B27/01 ,  G06F1/1626 ,  G06F1/163 ,  G06F1/1639 ,  G06F1/3203 ,  G09G3/002 ,  G09G2330/021 ,  H04N9/3129 ,  H04N9/3155 ,  H04N9/3173

Abstract: A scanning projector includes a programmable voltage source to provide a programmable voltage to a laser light source. A look-ahead circuit determines future voltage requirements by finding peaks in future pixel data. The programmable voltage may change for each frame of video, for each line of video, or multiple times within each line of video.