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公开(公告)号：US12174395B2
公开(公告)日：2024-12-24
申请号：US17431986
申请日：2019-12-04
Applicant: GOOGLE LLC
Inventor： Yi Qin , Ozan Cakmakci
Abstract: A head mounted display (HMD) provides multiple fields of view of a single micro-display by time-multiplexing the provision of light of different polarizations. The HMD includes a micro-display, a lightguide, and a plurality of combiners coupled to the lightguide, wherein each combiner is configured to combine light of a different polarization. For example, the HMD can include two combiners, with one combiner configured to combine P-polarized light and the other combiner configured to combine S-polarized light. A polarizer switch is included in a filter stack for the lightguide, and a control module controls the switch to alternate the provision of light having P-polarization and S-polarization, respectively. The light of each polarization provides a different field of view of the micro-display.
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公开(公告)号：US12169278B2
公开(公告)日：2024-12-17
申请号：US17437174
申请日：2019-12-04
Applicant: GOOGLE LLC
Inventor： Yi Qin , Ozan Cakmakci
IPC: G02B27/01
Abstract: An HMD employs a multifocal module having one or more voltage controlled optical elements. By changing the voltage applied to the one or more optical elements, the HMD can change the focal length of an image generated by the micro-display. The multifocal module can include a cholesteric liquid crystal (CLC) element and a polarizer switch. By controlling the voltage applied to each of the CLC element and the polarizer switch, the HMD can change the focal length of the image passed through the multifocal module. The HMD can thereby change the focal length of any image generated by the micro-display.
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公开(公告)号：US12164111B2
公开(公告)日：2024-12-10
申请号：US18318296
申请日：2023-05-16
Applicant: GOOGLE LLC
Inventor： Yi Qin , Ozan Cakmakci
Abstract: A head mounted display includes a combiner configured to receive display light from a micro-display. The world-facing surface of the combiner has a curvature that corresponds to a user's vision correction prescription. The head mounted display also includes a corrective layer having a second curvature that corresponds to the user's vision correction prescription. The corrective layer is disposed on the eye-facing surface of the combiner such that the focal point of the display light is adjusted for the specific user as the display light exits the combiner towards the user's eye.
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公开(公告)号：US12147039B2
公开(公告)日：2024-11-19
申请号：US17317105
申请日：2021-05-11
Applicant: GOOGLE LLC
Inventor： Ozan Cakmakci , Omar David Negrete , Yi Qin
Abstract: A head mounted display (HMD) device and method of manufacturing the same. The HMD includes a frame housing a micro-display to project display light, a lightguide configured to receive the display light from the micro-display, and a corrective layer having a world-side surface coupled to the eye-side surface of the lightguide. The lightguide is further configured to have a world-side surface with a radius of curvature based on an ophthalmic corrective prescription and an eye-side surface having an outcoupler feature formed thereon such that the coupled lightguide and corrective layer form a lens configured to fit within the frame.
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公开(公告)号：US20230236423A1
公开(公告)日：2023-07-27
申请号：US18009394
申请日：2020-06-30
Applicant: GOOGLE LLC
Inventor： Oscar Alberto Martinez , Yi Qin
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B2027/0178 , G02B2027/013 , G02B2027/0194
Abstract: An optical device includes a freeform lightguide to direct light from a display to a region where a user's eye is expected to be positioned. The freeform lightguide includes a lightguide substrate with first and second opposing surfaces extending between a first end and a second end of the freeform lightguide, with at least the second surface being a freeform surface and being overlaid with a partial mirror layer. The first surface being overlaid with at least a quarter-wave plate layer and a polarization beam splitter layer. The freeform lightguide also includes an in-coupling interface proximate to the first end of the freeform lightguide to receive light from the display.
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Patent Agency Ranking
公开(公告)号：US11002970B2
公开(公告)日：2021-05-11
申请号：US16437461
申请日：2019-06-11
Applicant: GOOGLE LLC
Inventor： Oscar Martinez , Yi Qin , Serge Bierhuizen
IPC: G02B27/01 , G02F1/1335 , G02B27/28 , G02B5/08
Abstract: A system includes an electronic display for emitting light toward an eye-ward side of the system. A beam splitter receives emitted light from the display. The beam splitter includes a polarization beam splitting (PBS) film and a mirror coating to generate two orthogonal polarization states with different optical paths thereby creating a first focal plane and a second focal plane at the eye-ward side of the system. At least one liquid crystal switch is positioned to receive light from the display in a light path between the display and the eye-ward side of the system.
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7.发明公开公开(公告)号：US20230280595A1
公开(公告)日：2023-09-07
申请号：US18318296
申请日：2023-05-16
Applicant: GOOGLE LLC
Inventor： Yi Qin , Ozan Cakmakci
CPC classification number: G02B27/0172 , G02C7/027 , G02B2027/0178 , G02B2027/013
Abstract: A head mounted display includes a combiner configured to receive display light from a micro-display. The world-facing surface of the combiner has a curvature that corresponds to a user's vision correction prescription. The head mounted display also includes a corrective layer having a second curvature that corresponds to the user's vision correction prescription. The corrective layer is disposed on the eye-facing surface of the combiner such that the focal point of the display light is adjusted for the specific user as the display light exits the combiner towards the user's eye.
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公开(公告)号：US20220299786A1
公开(公告)日：2022-09-22
申请号：US17638641
申请日：2019-09-04
Applicant: GOOGLE LLC
Inventor： Yi Qin , Oscar Alberto Martinez , Serge Joel Armand Bierhuizen , Xinda Hu
Abstract: A device provides light for augmented reality vision. The device includes a display that emits light toward a beam splitter. The beam splitter reflects light from the display toward a polarization-dependent lens. The beam splitter allows world scene light to pass therethrough to the polarization-dependent lens. The polarization-dependent lens directs display light and world scene light toward a non-polarization-dependent lens positioned at an eye-ward side of the polarization-dependent lens.
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9.发明申请公开(公告)号：US20220121029A1
公开(公告)日：2022-04-21
申请号：US17071646
申请日：2020-10-15
Applicant: GOOGLE LLC
Inventor： Yi Qin , Ozan Cakmakci
Abstract: A head mounted display includes a combiner configured to receive display light from a micro-display. The world-facing surface of the combiner has a curvature that corresponds to a user's vision correction prescription. The head mounted display also includes a corrective layer having a second curvature that corresponds to the user's vision correction prescription. The corrective layer is disposed on the eye-facing surface of the combiner such that the focal point of the display light is adjusted for the specific user as the display light exits the combiner towards the user's eye.
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公开(公告)号：US11054648B2
公开(公告)日：2021-07-06
申请号：US16194733
申请日：2018-11-19
Applicant: Google LLC
Inventor： Jerome Carollo , Xinda Hu , Serge Bierhuizen , Yi Qin
Abstract: Systems and apparatus are described for a head-mounted display apparatus comprising at least one optical assembly. Each optical assembly may include a first curved lens including a first surface and a second surface, a second curved lens including a third surface and a fourth surface, the third surface being concave and including a beam splitter layer, the second curved lens being disposed between the first curved lens and an input filter assembly, and a display panel adapted to receive image content from an image projecting device and transmit the image content through the at least one optical assembly. The third surface of the second curved lens may have a radius of curvature that is larger than a radius of curvature of the second surface of the first curved lens.
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