公开(公告)号：US20200041787A1

公开(公告)日：2020-02-06

申请号：US16593546

申请日：2019-10-04

Applicant: DigiLens Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern ,  Alastair John Grant

IPC: G02B27/00 ,  G02F1/295 ,  G02B6/34 ,  F21V8/00 ,  G02B27/01 ,  A61B3/113 ,  G02B6/42 ,  G02F1/29 ,  G02F1/313

Abstract: An eye tracker comprises a light source; a detector; and first and second waveguides. The first waveguide comprises an input coupler for coupling source light into a waveguide path and a first grating for coupling light out of the waveguide path onto an eye. The second waveguide comprises a second grating for coupling light reflected from the eye into a waveguide path and an output coupler for coupling light out of the waveguide path onto the detector. The second grating is optically configured for imaging the eye onto the detector.

公开(公告)号：US20200033801A1

公开(公告)日：2020-01-30

申请号：US16522491

申请日：2019-07-25

Applicant: DigiLens Inc.

Inventor： Jonathan David Waldern ,  Alastair John Grant ,  Milan Momcilo Popovich

IPC: G03H1/02 ,  B05D1/02 ,  B05D1/00 ,  B05D5/06 ,  G03F7/00

Abstract: Systems and methods for fabricating optical elements in accordance with various embodiments of the invention are illustrated. One embodiment includes a method for fabricating an optical element, the method including providing a first optical substrate, depositing a first layer of a first optical recording material onto the first optical substrate, applying an optical exposure process to the first layer to form a first optical structure, temporarily erasing the first optical structure, depositing a second layer of a second optical recording material, and applying an optical exposure process to the second layer to form a second optical structure, wherein the optical exposure process includes using at least one light beam traversing the first layer.

公开(公告)号：US20190361096A1

公开(公告)日：2019-11-28

申请号：US16450900

申请日：2019-06-24

Applicant: DigiLens Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern ,  Alastair John Grant

IPC: G01S7/481 ,  G02B26/08 ,  G02B6/12 ,  G01S17/42 ,  G02B27/00 ,  G06F3/01 ,  G02B26/10 ,  G02B6/34

Abstract: A holographic waveguide LIDAR comprises a transmitter waveguide coupled to a beam deflector and a receiver waveguide coupled to a detector module. The transmitter waveguide contains an array of grating elements for diffracting a scanned laser beam into a predefined angular ranges. The receiver waveguide contains an array of grating elements for diffracting light reflected from external points within a predefined angular range towards the detector module.

公开(公告)号：US20190285796A1

公开(公告)日：2019-09-19

申请号：US16357233

申请日：2019-03-18

Applicant: DigiLens Inc.

Inventor： Jonathan David Waldern ,  Milan Momcilo Popovich ,  Alastair John Grant

IPC: G02B6/126 ,  G02B6/13 ,  G02B6/122 ,  G02B6/34 ,  G02B6/27

Abstract: Many embodiments in accordance with the invention are directed towards waveguides implementing birefringence control. In some embodiments, the waveguide includes a birefringent grating layer and a birefringence control layer. In further embodiments, the birefringence control layer is compact and efficient. Such structures can be utilized for various applications, including but not limited to: compensating for polarization related losses in holographic waveguides; providing three-dimensional LC director alignment in waveguides based on Bragg gratings; and spatially varying angular/spectral bandwidth for homogenizing the output from a waveguide. In some embodiments, a polarization-maintaining, wide-angle, and high-reflection waveguide cladding with polarization compensation is implemented for grating birefringence. In several embodiments, a thin polarization control layer is implemented for providing either quarter wave or half wave retardation.

公开(公告)号：US10409144B2

公开(公告)日：2019-09-10

申请号：US15670875

申请日：2017-08-07

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC: G03B21/00 ,  G02B6/02 ,  H01L33/10 ,  G01J3/18 ,  G03F7/20 ,  H04N9/31 ,  G02F1/225

Abstract: A projection display device comprising a light source and an SBG device having a multiplicity of separate SBG elements sandwiched between transparent substrates to which transparent electrodes have been applied. The substrates function as a light guide. A least one transparent electrode comprises a plurality of independently switchable transparent electrode elements, each electrode element substantially overlaying a unique SBG element. Each SBG element encodes image information to be projected on an image surface. Light coupled into the light guide undergoes total internal reflection until diffracted out to the light guide by an activated SBG element. The SBG diffracts light out of the light guide to form an image region on an image surface when subjected to an applied voltage via said transparent electrodes.

公开(公告)号：US10359641B2

公开(公告)日：2019-07-23

申请号：US14794356

申请日：2015-07-08

Applicant: DigiLens Inc. ,  Rockwell Collins, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC: F21V8/00 ,  G02B5/18 ,  G02F1/29 ,  G02B27/01 ,  G02B27/42 ,  G02F1/1334

Abstract: A transparent wearable data display having a source of collimated light, a deflector for deflecting the collimated light into a scanned beam, and a first of switchable grating elements sandwiched between first and second parallel transparent substrates, which together functioning as a first light guide. A first coupling is provided for directing the scanned beam into a first total internal reflection (TIR) light path of the first light guide along the first array column. The grating elements having diffracting and non-diffracting states, in their diffracting state deflecting light out of said light guide. The grating elements are switchable into their diffracting states one group of elements at a time.

公开(公告)号：US20190212588A1

公开(公告)日：2019-07-11

申请号：US16203071

申请日：2018-11-28

Applicant: DigiLens, Inc.

Inventor： Jonathan David Waldern ,  Ratson Morad ,  Alastair John Grant ,  Sihui He ,  Shibu Abraham ,  Milan Momcilo Popovich

IPC: G02F1/13 ,  G02B6/13 ,  G02B27/09 ,  G02B6/122

CPC classification number: G02F1/1326 ,  G02B6/122 ,  G02B6/13 ,  G02B27/0944 ,  G02B2006/12107 ,  G02B2006/12116 ,  G02B2006/12166

Abstract: Systems for the manufacturing of waveguide cells in accordance with various embodiments can be configured and implemented in many different ways. In many embodiments, various deposition mechanisms are used to deposit layer(s) of optical recording material onto a transparent substrate. A second transparent substrate can be provided, and the three layers can be laminated to form a waveguide cell. Suitable optical recording material can vary widely depending on the given application. In some embodiments, the optical recording material deposited has a similar composition throughout the layer. In a number of embodiments, the optical recording material spatially varies in composition, allowing for the formation of optical elements with varying characteristics. Regardless of the composition of the optical recording material, any method of placing or depositing the optical recording material onto a substrate can be utilized.

公开(公告)号：US10330777B2

公开(公告)日：2019-06-25

申请号：US15543011

申请日：2016-01-19

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern ,  Alastair John Grant

IPC: G02B6/12 ,  G02B6/34 ,  G02B26/08 ,  G02B27/00 ,  G01S7/481 ,  G01S17/42 ,  G01S17/88 ,  G01S17/89 ,  G02B26/10 ,  G06F3/01

Abstract: A holographic waveguide LIDAR having a transmitter waveguide coupled to a beam deflector and a receiver waveguide coupled to a detector module. The transmitter waveguide contains an array of grating elements for diffracting a scanned laser beam into a predefined angular ranges. The receiver waveguide contains an array of grating elements for diffracting light reflected from external points within a predefined angular range towards the detector module.

公开(公告)号：US20190129085A1

公开(公告)日：2019-05-02

申请号：US16091088

申请日：2017-04-10

Applicant: DIGILENS, INC.

Inventor： Jonathan David Waldern ,  Milan Momcilo Popovich ,  Alastair John Grant

IPC: F21V8/00

Abstract: A structured light projector comprising: a light source emitting light of a first wavelength; at least one switchable grating switchable between a non-diffracting and a diffracting state; and at least one passive grating. At least one of the switchable and passive gratings provides a first grating configuration for projecting uniform illumination in a first interval of time. At least one of the switchable and passive gratings provides a second grating configuration for projecting structured illumination in a second interval of time.

公开(公告)号：US20190121027A1

公开(公告)日：2019-04-25

申请号：US16086578

申请日：2017-03-23

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern ,  Alastair John Grant

IPC: G02B6/27 ,  G02B6/34 ,  G02B27/28

Abstract: A waveguide apparatus, comprises: disposed in at least one layer: an input coupler; a first fold grating; a second fold grating; an output coupler; and a source of light optically coupled to the waveguide providing at least first and second polarizations of the light and at least one wavelength. The input coupler is configured to cause the first polarization light to travel along a first total internal reflection (TIR) path and the second polarization light to travel along a second TIR path.