公开(公告)号：US20240184031A1

公开(公告)日：2024-06-06

申请号：US18440180

申请日：2024-02-13

申请人： Magic Leap, Inc.

发明人： Chulwoo OH ,  Ravi Kumar KOMANDURI ,  David KLEINMAN ,  Vaibhav MATHUR ,  David MANLY

IPC分类号： G02B5/30 ,  G02B5/08 ,  G02B27/01 ,  G02F1/1335

CPC分类号： G02B5/305 ,  G02B5/0808 ,  G02B5/3058 ,  G02B5/3083 ,  G02B6/0076 ,  G02B27/0172 ,  G02F1/133528 ,  G02B2207/101

摘要： In some implementations, an optical device includes a one-way mirror formed by a polarization selective mirror and an absorptive polarizer. The absorptive polarizer has a transmission axis aligned with the transmission axis of the reflective polarizer. The one-way mirror may be provided on the world side of a head-mounted display system. Advantageously, the one-way mirror may reflect light from the world, which provides privacy and may improve the cosmetics of the display. In some implementations, the one-way mirror may include one or more of a depolarizer and a pair of opposing waveplates to improve alignment tolerances and reduce reflections to a viewer. In some implementations, the one-way mirror may form a compact integrated structure with a dimmer for reducing light transmitted to the viewer from the world.

公开(公告)号：US20240280860A1

公开(公告)日：2024-08-22

申请号：US18648448

申请日：2024-04-28

申请人： Magic Leap, Inc.

发明人： Chulwoo OH ,  Ravi Kumar KOMANDURI

IPC分类号： G02F1/1337 ,  G02B27/01 ,  G02F1/01 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1347

CPC分类号： G02F1/133757 ,  G02F1/0136 ,  G02B27/0172 ,  G02F1/133528 ,  G02F1/133633 ,  G02F1/133638 ,  G02F1/133761 ,  G02F1/133776 ,  G02F1/13378 ,  G02F1/13471

摘要： 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 first liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules that are rotated about respective axes parallel to a central axis, where the rotation varies with an azimuthal angle about the central axis. The switchable waveplate additionally comprises a plurality of electrodes to apply an electrical signal across the first liquid crystal layer.

公开(公告)号：US20240184113A1

公开(公告)日：2024-06-06

申请号：US18414100

申请日：2024-01-16

申请人： Magic Leap, Inc.

发明人： Roy Matthew PATTERSON ,  Chulwoo OH ,  Ravi Kumar KOMANDURI ,  Charles Scott CARDEN ,  Michael Nevin MILLER ,  Vikramjit SINGH ,  Shuqiang YANG

IPC分类号： G02B27/01 ,  G02F1/29

CPC分类号： G02B27/0172 ,  G02B6/0076 ,  G02F1/29 ,  G02B2027/0112 ,  G02F1/294

摘要： A display device includes a waveguide assembly comprising a waveguide configured to outcouple light out of a major surface of the waveguide to form an image in the eyes of a user. An adaptive lens assembly comprises a switchable waveplate assembly. The switchable waveplate assembly includes quarter-wave plates on opposing sides of a switchable liquid crystal layer, and electrodes on the quarter-wave plates in the volume between the quarter-wave plates. The electrodes can selectively establish an electric field and may serve as an alignment structure for molecules of the liquid crystal layer. Portions of the adaptive lens assembly may be manufactured by roll-to-roll processing in which a substrate roll is unwound, and alignment layers and liquid crystal layers are formed on the substrate as it moves towards a second roller, to be wound on that second roller.

公开(公告)号：US20240036516A1

公开(公告)日：2024-02-01

申请号：US18482896

申请日：2023-10-08

申请人： Magic Leap, Inc.

发明人： Ravi Kumar KOMANDURI ,  Chulwoo OH

IPC分类号： G03H1/02

CPC分类号： G03H1/0276 ,  G03H1/0244 ,  G03H2250/38 ,  G03H2222/31 ,  G03H2222/36 ,  G03H2222/34

摘要： An optical master is created by using a nanoimprint alignment layer to pattern a liquid crystal layer. The nanoimprint alignment layer and the liquid crystal layer constitute the optical master. The optical master is positioned above a photo-alignment layer. The optical master is illuminated and light propagating through the nanoimprinted alignment layer and the liquid crystal layer is diffracted and subsequently strikes the photo-alignment layer. The incident diffracted light causes the pattern in the liquid crystal layer to be transferred to the photo-alignment layer. A second liquid crystal layer is deposited onto the patterned photo-alignment layer, which subsequently is used to align the molecules of the second liquid crystal layer. The second liquid crystal layer in the patterned photo-alignment layer may be utilized as a replica optical master or as a diffractive optical element for directing light in optical devices such as augmented reality display devices.