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.

公开(公告)号：US11460621B2

公开(公告)日：2022-10-04

申请号：US16849043

申请日：2020-04-15

Applicant: Rockwell Collins, Inc. ,  DIGILENS INC.

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

IPC: G03H1/14 ,  G02B5/30 ,  G02B27/00 ,  F21V8/00 ,  G02B30/34 ,  G02B5/32 ,  G02B27/01 ,  G03H1/22

Abstract: An apparatus for displaying an image, including: an input image node configured to provide at least a first and a second image modulated lights; and a holographic waveguide device configured to propagate the at least one of the first and second image modulated lights in at least a first direction. The holographic waveguide device includes: at least a first and second interspersed multiplicities of grating elements disposed in at least one layer, the first and second grating elements having respectively a first and a second prescriptions. The first and second multiplicity of grating elements are configured to deflect respectively the first and second image modulated lights out of the at least one layer into respectively a first and a second multiplicities of output rays forming respectively a first and second FOV tiles.

公开(公告)号：US11443547B2

公开(公告)日：2022-09-13

申请号：US16990840

申请日：2020-08-11

Applicant: DigiLens Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC: G06V40/13 ,  G02B26/08 ,  H01L27/146 ,  G02B5/18 ,  G02B27/42 ,  G02B6/34 ,  F21V8/00

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：US11442222B2

公开(公告)日：2022-09-13

申请号：US17006569

申请日：2020-08-28

Applicant: DigiLens Inc.

Inventor： Jonathan David Waldern ,  Alastair John Grant ,  Milan Momcilo Popovich ,  Shibu Abraham ,  Baeddan George Hill ,  Tsung-Jui Ho

IPC: G02B6/02 ,  G02B6/293 ,  G02B6/12

Abstract: Improvements to gratings for use in waveguides and methods of producing them are described herein. Deep surface relief gratings (SRGs) may offer many advantages over conventional SRGs and Bragg gratings, an important one being a higher S-diffraction efficiency. In one embodiment, deep SRGs can be implemented as polymer surface relief gratings or evacuated Bragg gratings (EBGs). EBGs can be formed by first recording a holographic polymer dispersed liquid crystal (HPDLC) grating. Removing the liquid crystal from the cured grating provides a polymer surface relief grating. Polymer surface relief gratings have many applications including for use in waveguide-based displays.

公开(公告)号：US20220187692A1

公开(公告)日：2022-06-16

申请号：US17645249

申请日：2021-12-20

Applicant: DigiLens Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC: G03B21/00 ,  G01J3/18 ,  G02B5/18 ,  G02B5/32 ,  G02B6/02 ,  G02B27/42 ,  G02F1/1334 ,  G02F1/13357 ,  G02F1/225 ,  G02F1/29 ,  G02F1/315 ,  G03F7/20 ,  G06F3/042 ,  H01L33/10 ,  H04N9/31

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：US11320571B2

公开(公告)日：2022-05-03

申请号：US13844456

申请日：2013-03-15

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: G02B5/18 ,  G02B27/01 ,  F21V8/00

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：US20220128754A1

公开(公告)日：2022-04-28

申请号：US17454007

申请日：2021-11-08

Applicant: DigiLens Inc.

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

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

Abstract: A waveguide apparatus comprises 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：US20220075196A1

公开(公告)日：2022-03-10

申请号：US17454985

申请日：2021-11-15

Applicant: DigiLens Inc. ,  Rockwell Collins, Inc.

Inventor： Jonathan David Waldern ,  Milan Momcilo Popovich

IPC: G02B27/01 ,  G02F1/29 ,  G02B26/10 ,  G02F1/1334 ,  G02B27/48 ,  G02B5/18 ,  G02B6/34

Abstract: A light projection apparatus is provided comprising: a source of light; a switchable grating on a first substrate; and a diffractive optical element. Light is diffracted at least once by the switchable grating and is diffracted at least once by the DOE.

公开(公告)号：US20220057749A1

公开(公告)日：2022-02-24

申请号：US17341155

申请日：2021-06-07

Applicant: DigiLens Inc.

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

IPC: G03H1/20 ,  G03H1/02

Abstract: A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each containing a first hologram is stacked on a second holographic recording medium substrate. The first hologram is designed to diffract light from a first direction into a second direction. When expose to illumination from the first direction zero order and diffracted light from each first hologram interfere in the second holographic recording medium substrate forming a second hologram. The second hologram is then copied into a third holographic recording medium substrate to provide the final copy hologram.

公开(公告)号：US20210405514A1

公开(公告)日：2021-12-30

申请号：US17195418

申请日：2021-03-08

Applicant: DigiLens Inc.

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

IPC: G03B21/14 ,  G06F3/01 ,  G06T3/40 ,  H04N13/332 ,  G02B6/122 ,  G02B27/01

Abstract: Systems integrating display resolution-multiplication solutions can be implemented in a variety of different ways. In many embodiments, the system includes an image projector for projecting image light, an image processor for computing a native image and at least one image shifted in a predefined direction, and at least one switchable grating capable of being switched between diffracting and non-diffracting states. In some embodiments, the switchable grating is optically coupled to the image projector. In a number of embodiments, the switchable gratings have a first configuration for propagating the native image light and at least one other configuration for propagating shifted image light having an angular displacement corresponding to the image shift in a predefined direction. By displaying the native and shifted images sequentially within a human eye integration period, the display resolution can be multiplied.