公开(公告)号：US10459221B2

公开(公告)日：2019-10-29

申请号：US15675373

申请日：2017-08-11

Applicant: North Inc.

Inventor： Stefan Alexander ,  Ken Wu ,  Vance R. Morrison

IPC: G02B27/01 ,  G02B27/02 ,  G02B27/09 ,  H04N9/31 ,  G02B26/10

Abstract: Systems, devices, and methods for laser projectors with variable luminance that are well-suited for use in a wearable heads-up display (“WHUD”) are described. Such laser projectors include a laser light source(s) and a scan mirror(s) to generate an image in the field of view of a user, and a liquid crystal element between the light source(s) and the scan mirror(s) to adjust the luminance of the image. The liquid crystal element is on an optical path between the laser light source(s) and the scan mirror and is communicatively coupled to a controller that modulates an opacity of the liquid crystal element. The opacity of the liquid crystal element determines the luminance of the image and may be altered in response to different factors, such as ambient light. Particular applications of the laser projector systems, devices, and methods in a wearable heads-up display are described.

公开(公告)号：US10459223B2

公开(公告)日：2019-10-29

申请号：US15839075

申请日：2017-12-12

Applicant: NORTH INC.

Inventor： Stefan Alexander ,  Ken Wu ,  Vance R. Morrison

IPC: G02B27/01 ,  G02B27/02 ,  G02B27/09 ,  H04N9/31 ,  G02B26/10

Abstract: Systems, devices, and methods for laser projectors with variable luminance that are well-suited for use in a wearable heads-up display (“WHUD”) are described. Such laser projectors include a laser light source(s) and a scan mirror(s) to generate an image in the field of view of a user, and a liquid crystal element between the light source(s) and the scan mirror(s) to adjust the luminance of the image. The liquid crystal element is on an optical path between the laser light source(s) and the scan mirror and is communicatively coupled to a controller that modulates an opacity of the liquid crystal element. The opacity of the liquid crystal element determines the luminance of the image and may be altered in response to different factors, such as ambient light. Particular applications of the laser projector systems, devices, and methods in a wearable heads-up display are described.

公开(公告)号：US10459222B2

公开(公告)日：2019-10-29

申请号：US15839064

申请日：2017-12-12

Applicant: NORTH INC.

Inventor： Stefan Alexander ,  Ken Wu ,  Vance R. Morrison

IPC: G02B27/01 ,  G02B27/02 ,  G02B27/09 ,  H04N9/31 ,  G02B26/10

Abstract: Systems, devices, and methods for laser projectors with variable luminance that are well-suited for use in a wearable heads-up display (“WHUD”) are described. Such laser projectors include a laser light source(s) and a scan mirror(s) to generate an image in the field of view of a user, and a liquid crystal element between the light source(s) and the scan mirror(s) to adjust the luminance of the image. The liquid crystal element is on an optical path between the laser light source(s) and the scan mirror and is communicatively coupled to a controller that modulates an opacity of the liquid crystal element. The opacity of the liquid crystal element determines the luminance of the image and may be altered in response to different factors, such as ambient light. Particular applications of the laser projector systems, devices, and methods in a wearable heads-up display are described.

公开(公告)号：US10197805B2

公开(公告)日：2019-02-05

申请号：US15145583

申请日：2016-05-03

Applicant: North Inc.

Inventor： Matthew Bailey ,  Stefan Alexander ,  Vance R. Morrison ,  Thomas Mahon ,  Lloyd Frederick Holland ,  Jaehong Choi

IPC: G02B5/18 ,  G02B5/32 ,  G03H1/02 ,  G03H1/22 ,  G03H1/26 ,  G02B26/10 ,  G02B27/01

Abstract: Systems, devices, and methods for engineering the eyebox of a display using multiple heterogeneous exit pupils are described. The eyebox of a display includes at least two heterogeneous exit pupils that are different from one another in terms of size and/or shape. Heterogeneous exit pupils may overlap, one may encompass another, or they may be completely spatially-separated from one another. Such configurations enable specific eyebox and/or visual display configurations that can be advantageous in certain applications. An example in which a scanning laser-based wearable heads-up virtual retina display implements a holographic combiner that is engineered to provide multiple heterogeneous exit pupils is described.