US 12,366,823 B2Granted

Systems and methods for high-throughput recording of holographic gratings in waveguide cells

AssigneeDigiLens Inc.

InventorsJonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Ratson Morad, Sean Michael Williams

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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.

Claims14

Dependent claims

A holographic recording system comprising;

at least one laser source configured to emit recording beams;
a first set of one or more stations comprising one or more stage assemblies configured to move within the first set of one or more stations, wherein the one or more stage assemblies are configured to house a first set of waveguide cells, wherein the first set of one or more stations comprises a first station and a second station;
a second set of one or more stations comprising one or more stage assemblies configured to move within the second set of one or more stations, wherein the one or more stage assemblies are configured to house a second set of waveguide cells;
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 the first set of one or more stations, wherein the one or more stage assemblies is configured to reposition the first set of waveguide cells to intersect an optical path of the first set of one or more recording beams, wherein the first set of one or more recording beams comprises a first recording beam and a second recording beam, and wherein the at least one laser source is configured to emit the first recording beam toward the first station and the second recording beam toward the second station;
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 the second set of one or more stations, wherein the one or more stage assemblies is configured to reposition the second set of waveguide cells to intersect the optical path of the second set of one or more recording beams.

5 more elements

A method for recording volume gratings, the method comprising:

emitting a first set of one or more recording beams using at least one laser source, wherein the first set of one or more recording beams comprises a first recording beam and a second recording beam;
directing the emitted first set of one or more recording beams toward a first set of one or more waveguide cells housed in a first set of one or more stage assemblies housed in a first set of one or more stations, wherein the first set of stage assemblies repositions the first set of one or more waveguide cells into an optical path of the emitted first set of one or more recording beams, using at least one optical component mounted on a movable platform, wherein the first set of one or more waveguide cells comprises a first waveguide cell and a second waveguide cell, and the emitted first recording beam is directed toward the first waveguide cell and the emitted second recording beam is directed toward the second waveguide cell;
recording a first set of one or more volume gratings in the first set of one or more waveguide cells;
repositioning the movable platform;
emitting a second set of one or more recording beams using the at least one laser source;
directing the emitted second set of one or more recording beams toward a second set of one or more waveguide cells housed in a second set of one or more stage assemblies housed in a second set of one or more stations, wherein the second set of stage assemblies repositions the second set of one or more waveguide cells into an optical path of the emitted second set of one or more recording beams, using at least one optical component mounted on the movable platform;
and
recording a second set of one or more volume gratings in the second set of one or more waveguide cells.

5 more elements

A method for recording volume gratings, the method comprising:

emitting a first set of one or more recording beams using at least one laser source;
directing the emitted first set of one or more recording beams toward a first set of one or more waveguide cells housed in a first set of one or more stations using at least one optical component mounted on a movable platform, wherein the first set of one or more stations comprises a first set of one or more stage assemblies, wherein the first set of one or more stage assemblies is configured to reposition the first set of one or more waveguide cells within the first set of one or more stations;
recording a first set of one or more volume gratings in the first set of one or more waveguide cells;
repositioning the movable platform;
emitting a second set of one or more recording beams using the at least one laser source;
directing the emitted second set of one or more recording beams toward a second set of one or more waveguide cells housed in a second set of one or more stations using the at least one optical component mounted on the movable platform, wherein the second set of one or more stations comprises a second set of one or more stage assemblies, wherein the second set of one or more stage assemblies is configured to reposition the second set of one or more waveguide cells within the second set of one or more stations;
and
recording a second set of one or more volume gratings in the second set of one or more waveguide cells, wherein
the at least one optical component comprises a first mounted beamsplitter and a second mounted beamsplitter;
the first set of one or more waveguide cells comprises a first waveguide cell and a second waveguide cell;
the first set of one or more recording beams is emitted using at least one laser source by:
emitting an initial recording beam toward a stationary beamsplitter mounted off the movable platform to form a first recording beam and a second recording beam;
directing the first recording beam toward the first mounted beamsplitter to form a first recording sub-beam and a second recording sub-beam;
and
directing the second recording beam toward the second mounted beamsplitter to form a third recording sub-beam and a fourth recording sub-beam;
and
the emitted first set of one or more recording beams is directed toward a first set of one or more waveguide cells by:
directing the first and third recording sub-beams toward the first waveguide cell;
and
directing the second and fourth recording sub-beams toward the second waveguide cell.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/353,777Filed 17 Jul 2023 · continuation
Priority: 8 Jan 2018
Published: US 2024/0152094 A19 May 2024
Granted: 22 Jul 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification21 codes

G03H 1/0408
Recording geometries or arrangements: total internal reflection [TIR] holograms, e.g. edge lit or substrate mode holograms
G02B 6/138
Integrated optical circuits characterised by the manufacturing method: by using polymerisation
G02B 6/4204
Packages, e.g. shape, construction, internal or external details: the coupling comprising intermediate optical elements, e.g. lenses, holograms
G02B 27/0172
Head mounted: characterised by optical features

Family

Application62/614,813Us provisional application · filed 8 Jan 2018
Application62/614,932Us provisional application · filed 8 Jan 2018
Application62/614,831Us provisional application · filed 8 Jan 2018
Application62/663,864Us provisional application · filed 27 Apr 2018
Application62/703,329Us provisional application · filed 25 Jul 2018
Application16/116,834Parent of this continuation · filed 29 Aug 2018
Application16/935,048Parent of this continuation · filed 21 Jul 2020
US 10,732,569 B2Parent of this continuation · filed 4 Aug 2020
US 2024/0152094 A1Pre-grant publication · published 9 May 2024
US 11,703,799 B2Parent of this continuation
US 2019/0212698 A1Published application
US 2020/0363771 A1Published application
US 12,366,823 B2This patent

From the US filing history. Foreign family members aren’t listed.