公开(公告)号：US10459145B2

公开(公告)日：2019-10-29

申请号：US15558409

申请日：2016-03-15

Applicant: DigiLens Inc.

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

IPC: G02B6/28 ,  G02B6/26 ,  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：US10359736B2

公开(公告)日：2019-07-23

申请号：US15502596

申请日：2015-08-05

Applicant: DigiLens Inc.

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

IPC: G03H1/20 ,  G03H1/02 ,  G03H1/26

Abstract: A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each having 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：US20190212597A1

公开(公告)日：2019-07-11

申请号：US16242943

申请日：2019-01-08

Applicant: DigiLens, Inc.

Inventor： Jonathan David Waldern ,  Shibu Abraham

IPC: G02F1/1334 ,  G02F1/13 ,  C09K19/54 ,  G03F7/00

CPC classification number: G02F1/13342 ,  C09K19/544 ,  C09K2019/521 ,  G02F1/1326 ,  G03F7/001

Abstract: Photopolymerizable materials and in particular holographic polymer dispersed liquid crystal materials and processes for fabricating holographic waveguide devices from such materials are provided. Materials and formulations of photopolymerizable materials are sufficiently low haze to allow for the omission of adhesives from within the cell of the holographic waveguide devices. The photopolymerizable materials are used in association with methods of manufacturing holographic waveguides such that photopolymerizable materials may be used as an adhesive material.

公开(公告)号：US20190212195A9

公开(公告)日：2019-07-11

申请号：US15670875

申请日：2017-08-07

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

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

CPC classification number: G01J3/1895 ,  G02B5/1828 ,  G02B5/1842 ,  G02B5/32 ,  G02B6/02076 ,  G02F1/13342 ,  G02F1/133615 ,  G02F1/1347 ,  G02F1/13476 ,  G02F1/225 ,  G02F2203/24 ,  G03B21/005 ,  G03F7/70316 ,  G06F3/0425 ,  H01L33/10 ,  H04N9/3108 ,  H04N9/315 ,  H04N9/3173

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：US20190187538A1

公开(公告)日：2019-06-20

申请号：US16281969

申请日：2019-02-21

Applicant: DigiLens Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC: G02F1/29 ,  G06F3/042 ,  G06K9/00 ,  H01L27/146 ,  G02F1/1334 ,  G02B27/42 ,  G02B6/12 ,  G02B26/08

CPC classification number: G02F1/292 ,  G02B6/0076 ,  G02B6/12002 ,  G02B26/0808 ,  G02B27/4277 ,  G02B2006/12107 ,  G02B2006/12138 ,  G02F1/13342 ,  G02F2201/307 ,  G02F2203/62 ,  G06F3/0421 ,  G06K9/0004 ,  H01L27/14618 ,  H01L27/14625 ,  H01L27/14678 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A contact image sensor comprises: a light source providing a collimated beam; a detector and a switchable grating array comprising first and second transparent substrates sandwiching an array of switchable grating elements with transparent electrodes applied to said substrates, said substrates together providing a total internal reflection light guide. A first transmission grating layer overlays said first substrate. A second transmission grating layer overlays said second substrate. A quarter wavelength retarder layer overlays said second transmission grating layer. A platen overlays said quarter wavelength retarder layer; a polarization-rotating reflecting layer overlaying said first transmission grating layer. An input coupler for directing light from said light source into said light guide and an output coupler for extracting light out of said light guide towards said detector are also provided.

公开(公告)号：US20190171031A1

公开(公告)日：2019-06-06

申请号：US16250764

申请日：2019-01-17

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC: G02B27/48 ,  G03B21/20 ,  G02B5/02 ,  G02B5/32 ,  G02F1/29 ,  G02F1/1334 ,  G02B27/28 ,  F21V8/00 ,  G03B21/00 ,  G02F1/1333

Abstract: A device for reducing laser speckle using a micro scanner and a holographic diffuser. The micro scanner includes a first transparent optical substrate with an input surface and an output surface and a second transparent optical substrate with an input surface and an output surface and a variable refractive index medium sandwiched between the output surface of the first substrate and the input surface of the second substrate. Transparent electrodes are applied to the output surface of the first substrate and the input surface of the second substrate. The electrodes are coupled to a voltage generator. The input surface of the first substrate is optically coupled to a laser source. The input surface of the second substrate is configured as an array of prismatic elements. At least one of the input surface of the first substrate or the output surfaces of the second substrate is planar.

公开(公告)号：US20190042827A1

公开(公告)日：2019-02-07

申请号：US16148583

申请日：2018-10-01

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC: G06K9/00

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：US10156681B2

公开(公告)日：2018-12-18

申请号：US15807149

申请日：2017-11-08

Applicant: DigiLens, Inc. ,  Rockwell Collins Inc.

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

IPC: G02B6/34 ,  G02F1/1334 ,  G02B5/18 ,  G02B27/42 ,  G02B27/01 ,  G02B5/32 ,  G02B6/124 ,  F21V8/00

Abstract: An optical waveguide display comprises: a waveguide; a source of light modulated with temporally-varying angularly-distributed information; a fold grating providing a first beam expansion; an input coupler for directing light into total internal reflection paths in a first propagation direction; and an output grating for providing a second beam expansion and extracting light from the waveguide. The input light undergoes at least two diffractions within the fold grating, each diffraction directing light into a unique total internal reflection angular range along a second propagation direction.

公开(公告)号：US10089516B2

公开(公告)日：2018-10-02

申请号：US15670734

申请日：2017-08-07

Applicant: DigiLens, Inc.

Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

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

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：US20180210396A1

公开(公告)日：2018-07-26

申请号：US15502596

申请日：2015-08-05

Applicant: DIGILENS, INC.

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

IPC: G03H1/20 ,  G03H1/02

CPC classification number: G03H1/202 ,  G03H1/0244 ,  G03H1/0248 ,  G03H1/265 ,  G03H2001/207 ,  G03H2222/31 ,  G03H2223/20 ,  G03H2223/22 ,  G03H2223/25 ,  G03H2227/04 ,  G03H2260/12 ,  G03H2260/33

Abstract: A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each having 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.