公开(公告)号：US20180059305A1

公开(公告)日：2018-03-01

申请号：US15558409

申请日：2016-03-15

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo POPOVICH ,  Jonathan David WALDERN ,  Alastair John GRANT

IPC: F21V8/00 ,  G02B27/01 ,  G02F1/1334

Abstract: A waveguide apparatus has in combination: a light pipe with an optical axis for guiding light therethrough; a light coupling element in optical contact with an elongate portion of the reflecting surface of the light guide; and an optical waveguide in optical contact with the coupling element.

公开(公告)号：US20170357841A1

公开(公告)日：2017-12-14

申请号：US15670734

申请日：2017-08-07

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo POPOVICH ,  Jonathan David WALDERN

IPC: G06K9/00 ,  G02B26/08 ,  H01L27/146 ,  G02B27/42 ,  G02B5/18 ,  F21V8/00 ,  G02B6/34

CPC classification number: G06K9/00046 ,  G02B5/1828 ,  G02B6/0026 ,  G02B6/0056 ,  G02B6/0076 ,  G02B6/34 ,  G02B26/0808 ,  G02B27/4277 ,  G06K9/0004 ,  H01L27/14678

Abstract: A contact image sensor having an illumination source; a first SBG array device; a transmission grating; a second SBG array device; a waveguiding layer including a multiplicity of waveguide cores separated by cladding material; an upper clad layer; and a platen. The sensor further includes: an input element for coupling light from the illumination source into the first SBG array; a coupling element for coupling light out of the cores into output optical paths coupled to a detector having at least one photosensitive element.

公开(公告)号：US20240329289A1

公开(公告)日：2024-10-03

申请号：US18620834

申请日：2024-03-28

Applicant: DigiLens Inc.

Inventor： Alastair John Grant ,  Milan Momcilo Popovich

IPC: G02B5/32 ,  G03H1/04

CPC classification number: G02B5/32 ,  G03H1/0402 ,  G02B2207/101 ,  G03H2001/0439 ,  G03H2223/25 ,  G03H2240/11 ,  G03H2250/32

Abstract: A method for recording a diffractive nanostructure is provided. The method includes: providing a holographic recording mixture including a monomer, an inert material, and a photoinitiator; depositing a layer of the mixture onto a substrate; exposing the mixture to a holographic recording beam to form a nanostructure of polymer regions and inert material regions within the mixture layer; and depositing a surface-conditioning optical layer on top of the nanostructure after curing of the expose mixture.

公开(公告)号：US20240295703A1

公开(公告)日：2024-09-05

申请号：US18483435

申请日：2023-10-09

Applicant: DigiLens Inc.

Inventor： Alastair John Grant ,  Jonathan David Waldern ,  Milan Momcilo Popovich ,  Sihui He ,  Edward Lao ,  Roger Allen Conley Smith

IPC: G02B6/34 ,  G02B27/01

CPC classification number: G02B6/34 ,  G02B6/0016 ,  G02B27/0103 ,  G02B2027/0125

Abstract: Systems and methods for providing holographic waveguide display using integrated gratings in accordance with various embodiments of the invention are illustrated. One embodiment includes a waveguide display including a source of light, and a first waveguide including a grating structure including first and second gratings, and an input coupler configured to couple a first field-of-view portion of light, and couple a second field-of-view portion of light, wherein the first grating is configured to provide beam expansion in a first direction for the first field-of-view portion of light, and provide beam expansion in the first direction and beam extraction towards a viewer for the second field-of-view portion of light, the second grating is configured to provide beam expansion in a second direction for the second field-of-view portion of light, and provide beam expansion in the second direction and beam extraction towards a viewer for the first field-of-view portion of light.

公开(公告)号：US20240231208A9

公开(公告)日：2024-07-11

申请号：US18491247

申请日：2023-10-20

Applicant: DigiLens Inc.

Inventor： Nima Shams ,  John Border ,  Nicholas Sherwood

IPC: G03B21/20

CPC classification number: G03B21/2033 ,  G03B21/2013 ,  G03B21/2066

Abstract: Disclosed herein is a mixed illumination system including: a first light source; a second light source of different type than the first light source, where the wavelength an output of the second light source does not overlap with the wavelength of an output of the first light source; and a combiner which is configured to combine the output of the first light source and the second light source. The light from the first light source and the second light source are combined within the combiner into a combined beam.

公开(公告)号：US20240134244A1

公开(公告)日：2024-04-25

申请号：US18377683

申请日：2023-10-06

Applicant: Rockwell Collins, Inc. ,  Digilens Inc.

Inventor： Robert D. Brown ,  Alastair John Grant ,  Wyatt L. Hendrick ,  Milan Momcilo Popovich ,  James H. Stanley ,  Jonathan David Waldern

IPC: G02F1/29 ,  G02B5/18 ,  G02B27/01 ,  G02B27/42

CPC classification number: G02F1/29 ,  G02B5/1814 ,  G02B27/0172 ,  G02B27/4272 ,  G02B6/0013 ,  G02B2027/0118

Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

公开(公告)号：US11815781B2

公开(公告)日：2023-11-14

申请号：US17736005

申请日：2022-05-03

Applicant: Rockwell Collins, Inc. ,  DIGILENS INC.

Inventor： Robert D. Brown ,  Alastair John Grant ,  Wyatt L. Hendrick ,  Milan Momcilo Popovich ,  James H. Stanley ,  Jonathan David Waldern

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

CPC classification number: G02F1/29 ,  G02B5/1814 ,  G02B27/0172 ,  G02B27/4272 ,  G02B6/0013 ,  G02B2027/0118 ,  G03H2260/34

Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lumina configured to extract light from the second substrate along the second direction, wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

公开(公告)号：US20230266512A1

公开(公告)日：2023-08-24

申请号：US18005564

申请日：2021-07-14

Applicant: DigiLens Inc.

Inventor： Gerald Buxton ,  Shibu Abraham ,  Richard E. Bergstrom, Jr. ,  Alastair John Grant ,  Tsung-Jui Ho ,  Baeddan George Hill ,  Michiel Koen Callens ,  Hua Gu

IPC: G02B5/18 ,  G02B6/34 ,  G02F1/13 ,  G02F1/1334 ,  G11B7/0065

CPC classification number: G02B5/1857 ,  G02B6/34 ,  G02F1/1326 ,  G02F1/13342 ,  G11B7/0065 ,  G02B2207/101

Abstract: Disclosed herein is a holographic mixture including nanoparticles used to form gratings through holographic exposure. In various embodiments, exposure of the holographic mixture causes the nanoparticles to diffuse to dark fringe regions which creates nanoparticle rich regions and nanoparticle poor regions. Some embodiments include a multi-layer grating which includes a layer formed through the exposed holographic mixture and another layer directly applied above the exposed holographic mixture. The other layer may also be exposed through a holographic recording beam.

公开(公告)号：US11726261B2

公开(公告)日：2023-08-15

申请号：US17451223

申请日：2021-10-18

Applicant: DigiLens Inc.

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

IPC: G02B6/126 ,  G02B6/34 ,  G02B6/27 ,  G02B6/13 ,  G02B6/12 ,  G02B6/122

CPC classification number: G02B6/126 ,  G02B6/274 ,  G02B6/34 ,  G02B6/1221 ,  G02B6/13 ,  G02B2006/12116

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：US11480788B2

公开(公告)日：2022-10-25

申请号：US16820601

申请日：2020-03-16

Applicant: DigiLens Inc.

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

IPC: G02B27/01 ,  G02B27/00 ,  F21V8/00 ,  G02B27/48 ,  G02F1/29

Abstract: A light field display, having at least one laser emitter, an optical modulator for modulating light from the laser emitter with video information; a beam focus modulator; an array of beam scanning elements; an electrically controllable beam focus modulator; and at least one at least one waveguide having at least one transparent substrate, an input grating and an output grating for extracting light from the waveguide; and an eye tracker is provided.