公开(公告)号：US20210231986A1

公开(公告)日：2021-07-29

申请号：US17252024

申请日：2019-06-13

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh ,  Ravi Kumar Komanduri ,  Gary Sharp

IPC: G02F1/137 ,  G02F1/13 ,  G02F1/01 ,  G02B27/01 ,  G02B30/34

Abstract: A switchable optical assembly comprises a switchable waveplate configured to be electrically activated and deactivated to selectively alter the polarization state of light incident thereon. The switchable waveplate comprises first and second surfaces and a liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules. Said first and second surfaces may be curved. Said plurality of liquid crystal molecules may vary in tilt with respect to said first and second surfaces with outward radial distance from an axis through said first and second surfaces and said liquid crystal layer in a plurality of radial directions. The switchable waveplate additionally comprises a first plurality of electrodes to apply an electrical signal across said first liquid crystal layer.

公开(公告)号：US12072596B2

公开(公告)日：2024-08-27

申请号：US17988598

申请日：2022-11-16

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh ,  Ravi Kumar Komanduri ,  Gary Sharp

IPC: G02F1/1337 ,  G02B27/01 ,  G02B30/34 ,  G02F1/01 ,  G02F1/13 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/137 ,  G02B27/0172 ,  G02B30/34 ,  G02F1/0136 ,  G02F1/1326 ,  G02B2027/0134

Abstract: A switchable optical assembly comprises a switchable waveplate configured to be electrically activated and deactivated to selectively alter the polarization state of light incident thereon. The switchable waveplate comprises first and second surfaces and a liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules. Said first and second surfaces may be curved. Said plurality of liquid crystal molecules may vary in tilt with respect to said first and second surfaces with outward radial distance from an axis through said first and second surfaces and said liquid crystal layer in a plurality of radial directions. The switchable waveplate additionally comprises a first plurality of electrodes to apply an electrical signal across said first liquid crystal layer.

公开(公告)号：US20230084882A1

公开(公告)日：2023-03-16

申请号：US17988598

申请日：2022-11-16

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh ,  Ravi Kumar Komanduri ,  Gary Sharp

IPC: G02F1/137 ,  G02B27/01 ,  G02F1/01 ,  G02B30/34 ,  G02F1/13

Abstract: A switchable optical assembly comprises a switchable waveplate configured to be electrically activated and deactivated to selectively alter the polarization state of light incident thereon. The switchable waveplate comprises first and second surfaces and a liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules. Said first and second surfaces may be curved. Said plurality of liquid crystal molecules may vary in tilt with respect to said first and second surfaces with outward radial distance from an axis through said first and second surfaces and said liquid crystal layer in a plurality of radial directions. The switchable waveplate additionally comprises a first plurality of electrodes to apply an electrical signal across said first liquid crystal layer.

公开(公告)号：US11531244B2

公开(公告)日：2022-12-20

申请号：US17252024

申请日：2019-06-13

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh ,  Ravi Kumar Komanduri ,  Gary Sharp

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/137 ,  G02B30/34 ,  G02B27/01 ,  G02F1/01 ,  G02F1/13

Abstract: A switchable optical assembly comprises a switchable waveplate configured to be electrically activated and deactivated to selectively alter the polarization state of light incident thereon. The switchable waveplate comprises first and second surfaces and a liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules. Said first and second surfaces may be curved. Said plurality of liquid crystal molecules may vary in tilt with respect to said first and second surfaces with outward radial distance from an axis through said first and second surfaces and said liquid crystal layer in a plurality of radial directions. The switchable waveplate additionally comprises a first plurality of electrodes to apply an electrical signal across said first liquid crystal layer.