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公开(公告)号：US20240302656A1
公开(公告)日：2024-09-12
申请号：US18481943
申请日：2023-10-05
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Milan Momcilo Popovich , Alastair John Grant
CPC classification number: G02B27/0103 , G02B6/0026 , G02B6/005 , G02B6/0065 , G02B27/0101 , G02B27/0179 , B60K35/00 , B60K35/654 , B60K2360/334 , G02B2027/011 , G02B2027/0123 , G02B2027/0125 , G02B2027/0132 , G02B2027/0187
Abstract: Systems and methods for generating head-up displays (HUDs) using waveguides incorporating Bragg gratings in accordance with various embodiments of the invention are provided. The term HUD is typically utilized to describe a class of displays that incorporates a transparent display that presents data without requiring users to look away from their usual viewpoints. HUDs can be incorporated in any of a variety of applications including (but not limited to) vehicular and near-eye applications, such as googles, eyewear, etc. HUDs that utilize planar waveguides that incorporate Bragg gratings in accordance with various embodiments of the invention can achieve significantly larger fields of view and have lower volumetric requirements than HUDs implemented using conventional optical components.
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公开(公告)号：US20240160149A1
公开(公告)日：2024-05-16
申请号：US18353786
申请日：2023-07-17
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Alastair John Grant , Milan Momcilo Popovich
CPC classification number: G03H1/0248 , B05D1/005 , B05D1/02 , B05D5/061 , G02B5/1857 , G02B6/0065 , G03F7/001 , G03H2001/0441 , G03H2260/12 , G03H2260/33
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.
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133.发明公开公开(公告)号：US20240152094A1
公开(公告)日：2024-05-09
申请号：US18353777
申请日：2023-07-17
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Alastair John Grant , Milan Momcilo Popovich , Ratson Morad , Sean Michael Williams
CPC classification number: G03H1/0408 , G02B6/4204 , G03H1/0248 , G03H1/0465 , G03H2001/0434 , G03H2001/0439 , G03H1/30 , G03H2222/34 , G03H2223/16 , G03H2223/24 , G03H2223/50
Abstract: Holographic volume gratings in waveguide cells can be recorded using many different methods and systems in accordance with various embodiments of the invention. One embodiment includes a holographic recording system including at least one laser source configured to emit recording beams and a movable platform configured to move between a first position and a second position, wherein when the movable platform is in the first position, the at least one laser source is configured to emit a first set of one or more recording beams toward a first set of one or more stations and when the movable platform is in the second position, the at least one laser source is configured to emit a second set of one or more recording beams toward a second set of one or more stations.
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公开(公告)号：US20240103440A1
公开(公告)日：2024-03-28
申请号：US18468375
申请日：2023-09-15
Applicant: DigiLens Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern , Alastair John Grant
CPC classification number: G03H1/202 , G03H1/0244 , G03H1/0248 , G03H1/265
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.
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135.发明公开公开(公告)号：US20230359144A1
公开(公告)日：2023-11-09
申请号：US18311859
申请日：2023-05-03
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Sihui He , Alastair John Grant , Milan Momcilo Popovich
CPC classification number: G03H1/0244 , G03H1/0402 , G03H1/0272 , G03H1/0248 , G03H2001/0439 , G03H2223/16 , G03H2260/12 , G03H2260/33 , G02B27/01
Abstract: Typical waveguides rely on total internal reflection between the outer surfaces of substrates, which can make them highly susceptible to beam misalignment caused by nonplanarity of the substrates. In the manufacturing of the glass sheets commonly used for substrates, ripples can occur during the stretching and drawing of glass as it emerges from a furnace. Although glass manufacturers try to minimize ripples using predictions from mathematical models, it is difficult to totally eradicate the problem from the glass manufacturing process. Typically, these beam misalignments manifest themselves as image distortions and non-uniformities in the output illumination from the waveguide. Many embodiments of the invention are directed toward optically efficient, low cost solutions to the problem of controlling output image quality in waveguides manufactured using commercially available substrate glass and to the problem of compensating the image distortions and non-uniformity of curved waveguides.
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Patent Agency Ranking
公开(公告)号：US20230359028A1
公开(公告)日：2023-11-09
申请号：US18311851
申请日：2023-05-03
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Alastair John Grant , Milan Momcilo Popovich
CPC classification number: G02B27/0103 , G02B5/32 , G02B2027/0118 , G02B2027/0112
Abstract: Waveguides and waveguide displays having a layer for blocking non-image light (i.e. haze) that could otherwise reduce contrast and degrade color gamut and uniformity, while providing high transmission to external light are provided. Many waveguides and displays incorporate at least one light control layer applied to at least one external surface of said waveguide and overlapping at least a portion of said at least one grating, to divert or block scattered light from said set of gratings that might otherwise enter said eyebox.
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公开(公告)号：US11747719B2
公开(公告)日：2023-09-05
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 , G02B6/02 , G02B27/42 , G02F1/225 , G02F1/29 , G02F1/315 , H01L33/10 , H04N9/31 , G02B5/32 , G02F1/1334 , G02F1/13357 , G03F7/20 , G06F3/042 , G03F7/00 , G02F1/1347
CPC classification number: G03B21/005 , G01J3/1895 , G02B5/1828 , G02B5/1842 , G02B5/32 , G02B6/02076 , G02B27/4205 , G02F1/13342 , G02F1/133615 , G02F1/225 , G02F1/292 , G02F1/315 , G03F7/70316 , G06F3/0425 , H01L33/10 , H04N9/315 , H04N9/3108 , H04N9/3173 , G02F1/1347 , G02F1/13476 , G02F2203/24
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.
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138.发明授权公开(公告)号：US11747568B2
公开(公告)日：2023-09-05
申请号：US17410828
申请日：2021-08-24
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Alastair John Grant , Hyesog Lee , Gerald Buxton , Milan Momcilo Popovich
CPC classification number: G02B6/3522 , G02B6/0016 , G02B6/02076 , G02B6/02276 , G02B27/0081
Abstract: Multiplexed reflection and transmission gratings, and methods of their manufacture, are provided that improve uniformity with laser light, that is, reduced banding and other illumination artifacts occurring in waveguides. The mechanism for this can be the multiple reflections between the waveguide reflecting surfaces and the reflection hologram, which promote illumination averaging as beam propagation processes within a waveguide. In some gratings, a beam splitter layer overlapping the multiplexed gratings can be provided for the purposes of reducing banding in a laser-illuminated waveguide. The beam splitter can be provided by one or more dielectric layers. The beamsplitter can have sensitivity to one polarization. The beamsplitter can be sensitive to S-polarization. The beam splitter can be an anti-reflection coating optimized for normal incidence that becomes reflective at high TIR angles when immersed in glass or plastic.
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公开(公告)号：US11726332B2
公开(公告)日：2023-08-15
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 , F21V8/00 , G03B13/02 , G02B26/08 , G03H1/22 , G03B21/10
CPC classification number: G02B27/0172 , G02B5/1828 , G02B5/1876 , G02B6/34 , G02B26/101 , G02B26/105 , G02B27/48 , G02F1/13342 , G02F1/292 , G02B6/0011 , G02B26/0808 , G02B2027/0107 , G02B2027/0174 , G02B2027/0194 , G02F2201/307 , G03B13/02 , G03B21/10 , G03H2001/2226
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.
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公开(公告)号：US11726323B2
公开(公告)日：2023-08-15
申请号：US17195402
申请日：2021-03-08
Applicant: DigiLens Inc. , Rockwell Collins, Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern , Alastair John Grant
CPC classification number: G02B27/0103 , G02B6/0035 , G02B27/01 , G02B27/017 , G02B27/4205 , G02B27/425 , G02F1/29 , G02B2027/0118 , G02B2027/0165 , G02B2027/0174
Abstract: An image generation device includes: a spatial light modulator; a source of light; a beam deflector; an illumination waveguide and an image transport waveguide, each waveguide containing at least one switchable grating; and a coupler for directing scanned light into a first set of TIR paths in said illumination waveguide. A switchable grating in the illumination waveguide diffracts light onto said SLM, a switchable grating in said image transport waveguide diffracting image-modulated from the SLM into a waveguide path.
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