公开(公告)号：US10564418B2

公开(公告)日：2020-02-18

申请号：US16276037

申请日：2019-02-14

Applicant: North Inc.

Inventor： Eric Tremblay ,  Mickael Guillaumee ,  David Ziegler ,  Christophe Moser ,  Lucio Kilcher

IPC: G02B27/01 ,  G02B5/32 ,  G02B27/00

Abstract: Disclosed herein are devices and methods to provide multiple eyeboxes from multiple input pupils. In particular, a projection system can direct light from multiple input pupils to a holographic optical element. The light of each of the input pupils having light beams of different wavelengths. The holographic optical element reflects at least part of the light of the multiple input pupils to form an array of exit pupils.

公开(公告)号：US10409076B2

公开(公告)日：2019-09-10

申请号：US15473539

申请日：2017-03-29

Applicant: North Inc.

Inventor： Eric Tremblay ,  Nicolas Abele ,  Alexandre Fotinos ,  Mickael Guillaumee ,  David Ziegler ,  Christophe Moser ,  Philippe De Gol

IPC: G02B27/01 ,  G06F3/01

Abstract: A head worn display (HWD) includes a projection system, which projection system in turn may include: a projection surface including a holographic optical element (HOE) centered at a first location; a projector to project light onto a projection area of the projection surface; and a controller to send a control signal to the projector to cause the projector to project an image onto a location shifted from the first location based on a misalignment of a user's line of sight with the first location.

公开(公告)号：US10437071B2

公开(公告)日：2019-10-08

申请号：US14931497

申请日：2015-11-03

Applicant: North Inc.

Inventor： Eric Tremblay ,  Mickael Guillaumee ,  David Ziegler ,  Christophe Moser ,  Philippe De Gol

IPC: G02B27/01 ,  G06T19/00 ,  G06F3/01

Abstract: Disclosed herein are devices and methods to provide a display including a projection system and a removable lenses including a holographic optical element to receive light and reflect the light to an exit pupil. Each of the removable lenses may comprise a holographic optical element in a different position of the lens to change the position of the exit pupil. The projection system may project an image onto the holographic optical element to project the image to the exit pupil.

公开(公告)号：US10338384B2

公开(公告)日：2019-07-02

申请号：US14977420

申请日：2015-12-21

Applicant: North Inc.

Inventor： Eric Tremblay ,  Mickael Guillaumee ,  David Ziegler ,  Christophe Moser ,  Lucio Kilcher

IPC: G02B27/01 ,  G02B5/32 ,  G02B27/00

Abstract: Disclosed herein are devices and methods to provide multiple eyeboxes from multiple input pupils. In particular, a projection system can direct light from multiple input pupils to a holographic optical element. The light of each of the input pupils having light beams of different wavelengths. The holographic optical element reflects at least part of the light of the multiple input pupils to form an array of exit pupils.

公开(公告)号：US10254547B2

公开(公告)日：2019-04-09

申请号：US15498354

申请日：2017-04-26

Applicant: North Inc.

Inventor： Eric Tremblay ,  Mickael Guillaumee ,  Christophe Moser

IPC: G09G5/00 ,  G02B27/01 ,  G02B26/10 ,  G02B5/18 ,  G02B26/08 ,  G03H1/04 ,  G03H1/26

Abstract: A method for displaying an image viewable by an eye, the image being projected from a portable head worn display, comprises steps of: emitting a plurality of light beams of wavelengths that differ amongst the light beams; directing the plurality of light beams to a scanning mirror; modulating in intensity each one of the plurality of light beams in accordance with intensity information provided from the image, whereby the intensity is representative of a pixel value within the image; scanning the plurality of light beams in two distinct axes with the scanning mirror to form the image; and redirecting the plurality of light beams to the eye using a holographic optical element acting as a reflector of the light beams, whereby the redirecting is dependent on the wavelength of the light beam, to create for each light beam an exit pupil at the eye that is spatially separated from the exit pupils of the other light beams.

公开(公告)号：US10539925B2

公开(公告)日：2020-01-21

申请号：US15394416

申请日：2016-12-29

Applicant: North Inc.

Inventor： David Ziegler ,  Mickael Guillaumee ,  Christophe Moser

IPC: G03H1/02 ,  G03H1/18 ,  G03H1/04 ,  G03H1/26 ,  G02B27/01 ,  G02B27/58 ,  G02B5/32

Abstract: Various embodiments are generally directed to techniques for processing holographic recording media. Some embodiments are particularly directed to processing a raw holographic recording medium into an apodized holographic recording medium. For example, a raw holographic recording medium may include a plurality of photosensitive molecules uniformly distributed throughout that are able to record an interference pattern to create a hologram. However, when a photosensitive molecule is desensitized, such as by exposure to incoherent light, its photosensitivity is lost and the molecule may no longer be able to record an interference pattern of coherent light. Various embodiments described herein may include an apodized holographic recording medium that has been exposed to incoherent light in a manner to desensitize some photosensitive molecules therein such that the remaining photosensitive molecules have a non-uniform distribution.