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公开(公告)号：US10690929B1
公开(公告)日：2020-06-23
申请号：US16563782
申请日：2019-09-06
摘要： A head-mounted display includes an electronic display configured to output image light, an optics assembly configured to direct image light in a first band from the electronic display to an eye box, an eye tracking unit configured to generate eye tracking information, and a beamsplitter configured to redirect light in a second band reflected from the eye box toward the eye tracking unit and transmit the image light in the first band. The beamsplitter includes a first region and a second region, and a first portion that joins the first region and the second region is curved such that an angle between the first region and the optical axis is larger than an angle between second region and the optical axis, and the beamsplitter is positioned along the optical axis between the optics assembly and the electronic display.
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公开(公告)号：US10600352B1
公开(公告)日：2020-03-24
申请号：US16209909
申请日：2018-12-04
发明人： Brian Wheelwright , Jacques Gollier , Ying Geng , Yusufu Njoni Bamaxam Sulai , Fenglin Peng , Babak Amirsolaimani
摘要： A display device is configured to be operable in a normal mode that blocks ambient light or a see-through mode that allows ambient light to be visible to a user. The display device includes an emission surface configured to output image light, a switchable window configurable to block ambient light in the normal mode or to transmit ambient light in the see-through mode, and an optical assembly. The optical assembly includes a first region configured to receive image light from the emission surface and to direct the image light toward the eyes of a user. The optical assembly also includes a second region configured to receive ambient light from the switchable window and to allow at least a portion of the ambient light to pass through. A method of setting the display device in normal mode or see-through mode is also disclosed.
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公开(公告)号：US20190353898A1
公开(公告)日：2019-11-21
申请号：US16359117
申请日：2019-03-20
发明人： Babak Amirsolaimani , Pasi Saarikko , Ying Geng , Yusufu Njoni Bamaxam Sulai , Scott Charles McEldowney
摘要： An optical system includes an optical waveguide, and a first optical element configured to direct a first ray, having a first circular polarization and impinging on the first optical element at a first incidence angle, in a first direction so that the first ray propagates through the optical waveguide via total internal reflection toward a second optical element. The first optical element is configured to also direct a second ray, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element at the first incidence angle, in a second direction that is distinct from the first direction so that the second ray propagates away from the second optical element. The second optical element is configured to direct the first ray propagating through the optical waveguide toward a detector.
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公开(公告)号：US11366260B1
公开(公告)日：2022-06-21
申请号：US16417334
申请日：2019-05-20
摘要： An optical system includes an optical lens, a polarization volume hologram (PVH) layer arranged over the optical lens, and an IR absorbing structure arranged between the optical lens and the PVH layer. The PVH layer being configured to reflect infrared (IR) light. The IR absorbing structure includes a quarter-wave plate (QWP) arranged between the optical lens and the PVH layer and a linear absorptive polarizer arranged between the QWP and the optical lens. The linear absorptive polarizer is configured to absorb IR light.
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公开(公告)号：US11256086B2
公开(公告)日：2022-02-22
申请号：US16359117
申请日：2019-03-20
发明人： Babak Amirsolaimani , Pasi Saarikko , Ying Geng , Yusufu Njoni Bamaxam Sulai , Scott Charles McEldowney
IPC分类号： G02B27/00 , G02B27/01 , G02B6/42 , G06T7/70 , G06F3/01 , F21V8/00 , G02B6/27 , G02B23/12 , G02B6/35 , G02B6/10
摘要： An optical system includes an optical waveguide, and a first optical element configured to direct a first ray, having a first circular polarization and impinging on the first optical element at a first incidence angle, in a first direction so that the first ray propagates through the optical waveguide via total internal reflection toward a second optical element. The first optical element is configured to also direct a second ray, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element at the first incidence angle, in a second direction that is distinct from the first direction so that the second ray propagates away from the second optical element. The second optical element is configured to direct the first ray propagating through the optical waveguide toward a detector.
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公开(公告)号：US10989926B1
公开(公告)日：2021-04-27
申请号：US16579182
申请日：2019-09-23
发明人： Nathan Matsuda , Yusufu Njoni Bamaxam Sulai , Ying Geng , Brian Wheelwright , Douglas Robert Lanman , Afsoon Jamali , Jasmine Soria Sears , Alireza Moheghi
摘要： A near-eye display based on a polarization-selective diffusive combiner includes a polarizer for polarizing impinging ambient light to have a first polarization state, and a polarization-selective scatterer downstream of the polarizer, for passing through the ambient light having the first polarization state substantially without scattering, while scattering impinging display light having a second polarization state orthogonal to the first polarization state. The display light at the second polarization state may be provided by a projector, the polarization-selective scatterer playing the role of a projector screen. A polarization-selective ocular lens may be disposed downstream of the polarization-selective scatterer for viewing images generated by the projector while propagating through orthogonally polarized light from outside environment.
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公开(公告)号：US10852817B1
公开(公告)日：2020-12-01
申请号：US16179656
申请日：2018-11-02
发明人： Andrew John Ouderkirk , Robert Dale Cavin , Alexander Jobe Fix , Ying Geng , Elias Daniel Guestrin , Karol Constantine Hatzilias , Robin Sharma , Yusufu Njoni Bamaxam Sulai
摘要： Techniques for eye-tracking in a near-eye display system are disclosed. One example of a near-eye display system includes a waveguide-based display substrate transparent to visible light and configured to be placed in front of a user's eye. The waveguide-based display substrate includes a first light deflector configured to direct a first portion of invisible light reflected by the user's eye to a camera to form a first image of the user's eye in a first area of an image frame, and a second light deflector configured to direct a second portion of the invisible light reflected by the user's eye to the camera to form a second image of the user's eye in a second area of the image frame.
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公开(公告)号：US20200348528A1
公开(公告)日：2020-11-05
申请号：US16548800
申请日：2019-08-22
发明人： Afsoon JAMALI , Brian Wheelwright , Yang Zhao , Yusufu Njoni Bamaxam Sulai , Douglas Robert Lanman
IPC分类号： G02B27/09 , G02B7/04 , G02B27/28 , G02F1/1335
摘要： An optical lens assembly and a head-mounted display (HMD) is provided. The optical lens assembly includes a first optical element including a partial reflector and a quarter-wave plate, a second optical element including a reflective polarizer, and a varifocal lens disposed inside a cavity formed by the first optical element and the second optical element. The varifocal lens is a liquid crystal (LC) lens stack including a plurality of LC lenses. An LC lens of the plurality of the LC lenses has a plurality of optical states including an additive state that adds optical power to the varifocal lens and a subtractive state that removes optical power from the varifocal lens. The plurality of optical states provides a range of adjustment of optical power for the optical lens assembly.
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公开(公告)号：US10725302B1
公开(公告)日：2020-07-28
申请号：US16179650
申请日：2018-11-02
发明人： Robin Sharma , Andrew John Ouderkirk , Robert Dale Cavin , Alexander Jobe Fix , Ying Geng , Elias Daniel Guestrin , Karol Constantine Hatzilias , Yusufu Njoni Bamaxam Sulai
摘要： Techniques for eye-tracking in a near-eye display system are disclosed. One example of a near-eye display system includes a waveguide-based display substrate that is transparent to visible light and configured to be placed in front of a user's eye. The waveguide-based display substrate includes a first surface area configured to specularly reflect a first portion of invisible light reflected by the user's eye to a camera to form a first image of the user's eye in a first area of an image frame, and a light deflector embedded in the waveguide-based display substrate or formed on a second surface area of the waveguide-based display substrate. The light deflector is configured to direct a second portion of the invisible light reflected by the user's eye to the camera to form a second image of the user's eye in a second area of the image frame.
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公开(公告)号：US20190384070A1
公开(公告)日：2019-12-19
申请号：US16434982
申请日：2019-06-07
摘要： A lens assembly includes a first optical element and a second optical element. The first optical element includes a flat partially reflective layer. The second optical element includes a curved reflective polarizer layer.
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