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公开(公告)号：US20190271944A1
公开(公告)日：2019-09-05
申请号：US16290645
申请日：2019-03-01
Applicant: North Inc.
Inventor： John Cormier , Laleh Mokhtarpour , Sylwia Agnieszka Lyda , I-Hsiang Albert Chen
Abstract: Systems, devices, and methods for controlled hologram playback shifting are described. The playback of a hologram may be shifted to a longer wavelength by diffusing donor material into the hologram in a controlled manner. A hologram may include a set of fringes, holographic recording medium and donor material. An apparatus to controllable shift playback angle of a hologram can include a hologram film holder, donor film holder, one or more light sources, light sensor, and curing lamp. A method may include monitoring playback light until an amount of playback shift occurs, and in response fixing a piece of hologram film and physically de-coupling a donor film therefrom.
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公开(公告)号：US20190163127A1
公开(公告)日：2019-05-30
申请号：US16204848
申请日：2018-11-29
Applicant: NORTH INC.
Inventor： John Cormier
Abstract: Systems, devices, and methods for aperture-free hologram recording are described. The apertures typically used for hologram recording create unwanted secondary holograms by diffracting light. Aperture-free hologram recording eliminates these unwanted secondary holograms. Aperture-free hologram recording includes applying a mask to the holographic recording medium. The mask controls the size of the recorded hologram like an aperture but does not create unwanted secondary holograms. Hologram fringes are only present in the desired recording area and a thin boundary region. The mask may be present during recording, or the mask may be used to pre-bleach the holographic recording medium. Pre-bleaching the holographic recording medium renders a portion of the holographic recording medium insensitive to light, the hologram is recorded in the light-sensitive portions of the holographic recording medium.
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公开(公告)号：US20190163129A1
公开(公告)日：2019-05-30
申请号：US16204855
申请日：2018-11-29
Applicant: NORTH INC.
Inventor： John Cormier
Abstract: Systems, devices, and methods for aperture-free hologram recording are described. The apertures typically used for hologram recording create unwanted secondary holograms by diffracting light. Aperture-free hologram recording eliminates these unwanted secondary holograms. Aperture-free hologram recording includes applying a mask to the holographic recording medium. The mask controls the size of the recorded hologram like an aperture but does not create unwanted secondary holograms. Hologram fringes are only present in the desired recording area and a thin boundary region. The mask may be present during recording, or the mask may be used to pre-bleach the holographic recording medium. Pre-bleaching the holographic recording medium renders a portion of the holographic recording medium insensitive to light, the hologram is recorded in the light-sensitive portions of the holographic recording medium.
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Patent Agency Ranking
公开(公告)号：US20190163130A1
公开(公告)日：2019-05-30
申请号：US16204860
申请日：2018-11-29
Applicant: NORTH INC.
Inventor： John Cormier
Abstract: Systems, devices, and methods for aperture-free hologram recording are described. The apertures typically used for hologram recording create unwanted secondary holograms by diffracting light. Aperture-free hologram recording eliminates these unwanted secondary holograms. Aperture-free hologram recording includes applying a mask to the holographic recording medium. The mask controls the size of the recorded hologram like an aperture but does not create unwanted secondary holograms. Hologram fringes are only present in the desired recording area and a thin boundary region. The mask may be present during recording, or the mask may be used to pre-bleach the holographic recording medium. Pre-bleaching the holographic recording medium renders a portion of the holographic recording medium insensitive to light, the hologram is recorded in the light-sensitive portions of the holographic recording medium.
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公开(公告)号：US20190271845A1
公开(公告)日：2019-09-05
申请号：US16290519
申请日：2019-03-01
Applicant: North Inc.
Inventor： John Cormier , Laleh Mokhtarpour , Sylwia Agnieszka Lyda , I-Hsiang Albert Chen
IPC: G02B27/01 , G06F3/01 , G06F3/0484 , G06F1/16
Abstract: Systems, devices, and methods for eyebox expansion in wearable heads-up display are described. The eyebox of a wearable heads-up display may be expanded by increasing the bandwidth of the hologram comprising the holographic combiner of the wearable heads-up display. The bandwidth of the hologram may be increased by physically coupling a donor film to a hologram film, causing donor material to diffuse into the hologram film and then fixing the donor material in place. Diffusion of donor material into the hologram film causes a change in the slant angle and/or the spacing of at least a portion of the hologram fringes of the hologram film, broadening the bandwidth of the hologram.
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公开(公告)号：US20190163131A1
公开(公告)日：2019-05-30
申请号：US16204864
申请日：2018-11-29
Applicant: NORTH INC.
Inventor： John Cormier
Abstract: Systems, devices, and methods for aperture-free hologram recording are described. The apertures typically used for hologram recording create unwanted secondary holograms by diffracting light. Aperture-free hologram recording eliminates these unwanted secondary holograms. Aperture-free hologram recording includes applying a mask to the holographic recording medium. The mask controls the size of the recorded hologram like an aperture but does not create unwanted secondary holograms. Hologram fringes are only present in the desired recording area and a thin boundary region. The mask may be present during recording, or the mask may be used to pre-bleach the holographic recording medium. Pre-bleaching the holographic recording medium renders a portion of the holographic recording medium insensitive to light, the hologram is recorded in the light-sensitive portions of the holographic recording medium.
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公开(公告)号：US20190163128A1
公开(公告)日：2019-05-30
申请号：US16204853
申请日：2018-11-29
Applicant: NORTH INC.
Inventor： John Cormier
Abstract: Systems, devices, and methods for aperture-free hologram recording are described. The apertures typically used for hologram recording create unwanted secondary holograms by diffracting light. Aperture-free hologram recording eliminates these unwanted secondary holograms. Aperture-free hologram recording includes applying a mask to the holographic recording medium. The mask controls the size of the recorded hologram like an aperture but does not create unwanted secondary holograms. Hologram fringes are only present in the desired recording area and a thin boundary region. The mask may be present during recording, or the mask may be used to pre-bleach the holographic recording medium. Pre-bleaching the holographic recording medium renders a portion of the holographic recording medium insensitive to light, the hologram is recorded in the light-sensitive portions of the holographic recording medium.
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公开(公告)号：US20190163126A1
公开(公告)日：2019-05-30
申请号：US16204842
申请日：2018-11-29
Applicant: NORTH INC.
Inventor： John Cormier
Abstract: Systems, devices, and methods for aperture-free hologram recording are described. The apertures typically used for hologram recording create unwanted secondary holograms by diffracting light. Aperture-free hologram recording eliminates these unwanted secondary holograms. Aperture-free hologram recording includes applying a mask to the holographic recording medium. The mask controls the size of the recorded hologram like an aperture but does not create unwanted secondary holograms. Hologram fringes are only present in the desired recording area and a thin boundary region. The mask may be present during recording, or the mask may be used to pre-bleach the holographic recording medium. Pre-bleaching the holographic recording medium renders a portion of the holographic recording medium insensitive to light, the hologram is recorded in the light-sensitive portions of the holographic recording medium.
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