公开(公告)号：US20200026065A1

公开(公告)日：2020-01-23

申请号：US16042898

申请日：2018-07-23

Applicant: Microvision, Inc.

Inventor： P. Selvan Viswanathan ,  Matthieu Saracco ,  Roger F. Johnson ,  Ian Blanch

IPC: G02B26/08 ,  G02B26/10

Abstract: An angular velocity correcting optical device receives a sinusoidally swept input light beam and outputs a non-sinusoidally swept output beam. The output beam may have a constant angular velocity. The output beam may have a constant pitch on a target surface for a constant periodicity pulsed light beam. Optical surfaces may be freeform surfaces specified by polynomials.

公开(公告)号：US10108022B2

公开(公告)日：2018-10-23

申请号：US15984717

申请日：2018-05-21

Applicant: Microvision, Inc.

Inventor： Matthieu Saracco ,  Roeland Collet ,  Alga Lloyd Northern, III

IPC: G03B21/14 ,  H04N9/31 ,  G02B27/28 ,  G02B26/10 ,  G02B27/48 ,  G02B26/08 ,  G02B27/14 ,  H04N5/74

Abstract: Devices and methods are described herein that use a first solid figure element, a polarizing beam splitter, and a second solid figure element or array of mirrors to reduce speckle in projected images. Specifically, laser light is generated and split into two portions having orthogonal polarizations. The first portion of laser light is reflected in the second solid figure element or the array of mirrors and is then spatially recombined with the second portion of laser light in the first solid figure element. The difference in path length followed by the two portions generates a temporal incoherence in the recombined laser light beam, and that temporal incoherence reduces speckle in the projected image.

公开(公告)号：US10070016B2

公开(公告)日：2018-09-04

申请号：US15044433

申请日：2016-02-16

Applicant: Microvision, Inc.

Inventor： Matthieu Saracco ,  Dale Eugene Zimmerman

IPC: G03G21/14 ,  H04N9/31 ,  H04N3/28 ,  G03B21/20

Abstract: A scanning projector and method is provided that that uses at least one multi-stripe laser to generate the laser light for the scanned image. Specifically, the multi-stripe laser includes at least a first laser element and a second laser element formed together on a semiconductor die. The first laser element is configured to output a first laser light beam, and the second laser element is configured to output a second laser light beam. At least one scanning mirror is configured to reflect the first laser light beam and the second laser light beam, and a drive circuit is configured to provide an excitation signal to excite motion of the at least one scanning mirror. Specifically, the motion is excited such that the at least one scanning mirror reflects the first laser light beam and the second laser light beam in a raster pattern of scan lines.

公开(公告)号：US10598943B2

公开(公告)日：2020-03-24

申请号：US15917216

申请日：2018-03-09

Applicant: Microvision, Inc.

Inventor： Matthieu Saracco

IPC: G02B27/09 ,  G02B19/00 ,  G02B26/10 ,  H04N9/31 ,  G02B27/01

Abstract: A bi-acylindrical lens collimates a divergent elliptical laser beam. A first surface of the bi-acylindrical lens is shaped to form a first acylindrical lens, and a second surface of the bi-acylindrical lens is shaped to form a second acylindrical lens. The first acylindrical lens collimates the divergent elliptical laser beam on the fast axis, and the second acylindrical lens collimates the diverging elliptical laser beam on the slow axis.

公开(公告)号：US10481739B2

公开(公告)日：2019-11-19

申请号：US15044174

申请日：2016-02-16

Applicant: Microvision, Inc.

Inventor： P. Selvan Viswanathan ,  Roeland Collet ,  George Thomas Valliath ,  Jari Honkanen ,  Matthieu Saracco

IPC: G06F3/00 ,  G06F3/042 ,  G02B27/14 ,  G06F3/01

Abstract: Briefly, in accordance with one or more embodiments, an information handling system comprises a scanning system to scan one or more component wavelength beams into a combined multi-component beam in a first field of view, and a redirecting system to redirect one or more of the component wavelength beams into a second field of view. A first subset of the one or more component wavelength beams is projected in the first field of view and a second subset of the one or more component wavelength beams is projected in the second field of view. The first subset may project a visible image in the first field of view, and user is capable of providing an input to control the information handling system via interaction with the second subset in the second field of view.

公开(公告)号：US10001656B2

公开(公告)日：2018-06-19

申请号：US15096791

申请日：2016-04-12

Applicant: Microvision, Inc.

Inventor： Matthieu Saracco ,  Roeland Collet

IPC: G03B21/14 ,  H04N9/31 ,  G02B27/48 ,  G02B27/28 ,  G02B26/10 ,  G02B1/11 ,  G03B21/20

CPC classification number: G02B27/48 ,  G02B1/11 ,  G02B5/3083 ,  G02B26/105 ,  G02B27/0101 ,  G02B27/0172 ,  G02B27/285 ,  G02B2027/0178 ,  G03B21/2033 ,  G03B21/206 ,  G03B21/2073 ,  G03B21/208 ,  H04N9/3129 ,  H04N9/3135 ,  H04N9/3161 ,  H04N9/3167

Abstract: Devices and methods are described herein that use a first solid figure element, a polarizing beam splitter, and a second solid figure element to reduce speckle in projected images. Specifically, laser light is generated and split into two portions having orthogonal polarizations. The first portion of laser light is internally reflected off at least three internal faces of the second solid figure element and is then spatially recombined with the second portion of laser light in the first solid figure element. The difference in path length followed by the two portions generates a temporal incoherence in the recombined laser light beam, and that temporal incoherence reduces speckle in the projected image.

公开(公告)号：US20170293155A1

公开(公告)日：2017-10-12

申请号：US15096638

申请日：2016-04-12

Applicant: Microvision, Inc.

Inventor： Matthieu Saracco

IPC: G02B27/48 ,  G02B5/30 ,  H04N9/31 ,  G02B26/10 ,  G03B21/20 ,  G02B5/32 ,  G02B1/11

CPC classification number: G02B27/48 ,  G02B1/11 ,  G02B5/3083 ,  G02B5/32 ,  G02B26/105 ,  G02B27/0101 ,  G02B27/0172 ,  G02B2027/0178 ,  G03B21/2073 ,  H04N9/3129 ,  H04N9/3167

Abstract: Devices and methods are described herein that use birefringent elements to reduce speckle. The birefringent elements are angularly separate received laser light into two separated light beams, and then recombine the two angularly separated light beams. At least one scanning mirror is configured to reflect the recombined laser light beam, and a drive circuit is configured to provide an excitation signal to excite motion of the at least one scanning mirror. The angular separation of the light beams generates a relative delay between the two light beams, and this relative delay between light beams generates a temporal incoherence in the recombined light beams. This temporal incoherence can reduce speckle in the projected image.

公开(公告)号：US11579427B2

公开(公告)日：2023-02-14

申请号：US16160167

申请日：2018-10-15

Applicant: Microvision, Inc.

Inventor： Matthieu Saracco ,  Alga Lloyd Nothern, III ,  P. Selvan Viswanathan ,  James P. McGuire

IPC: G02B19/00 ,  G02B27/09 ,  G02B5/28 ,  G01S7/481 ,  G01S17/10 ,  G01S17/88

Abstract: A non-imaging concentrator is employed in an upside down configuration in which light enters a smaller aperture and exits a larger aperture. The input angle of light rays may be as large as 180 degrees, while the maximum exit angle is limited to the acceptance angle of the non-imaging concentrator. A dichroic filter placed at the larger aperture has a maximum angle of incidence equal to the acceptance angle of the non-imaging concentrator.

公开(公告)号：US10831019B2

公开(公告)日：2020-11-10

申请号：US16042898

申请日：2018-07-23

Applicant: Microvision, Inc.

Inventor： P. Selvan Viswanathan ,  Matthieu Saracco ,  Roger F. Johnson ,  Ian Blanch

IPC: G02B26/08 ,  G02B26/10 ,  H04N9/31

Abstract: An angular velocity correcting optical device receives a sinusoidally swept input light beam and outputs a non-sinusoidally swept output beam. The output beam may have a constant angular velocity. The output beam may have a constant pitch on a target surface for a constant periodicity pulsed light beam. Optical surfaces may be freeform surfaces specified by polynomials.

公开(公告)号：US20180152680A1

公开(公告)日：2018-05-31

申请号：US15365670

申请日：2016-11-30

Applicant: Microvision, Inc.

Inventor： Dale Eugene Zimmerman ,  Matthieu Saracco ,  Jonathan A. Morarity

IPC: H04N9/31

CPC classification number: H04N9/3155 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3164 ,  H04N9/3167 ,  H04N9/317

Abstract: A scanning projector includes one or more scanning mirrors that reflect a light beam to create an image. The beam is created by multiple laser light sources, at least two of which create light at substantially the same color. The multiple laser light sources are used alternately to illuminate successive pixels, lines, and/or frames. Speckle reduction is achieved because of spatial overlap of the light beams produced by the multiple laser light sources.