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1.发明公开公开(公告)号：US20240241374A1
公开(公告)日：2024-07-18
申请号：US18096910
申请日：2023-01-13
Applicant: GOOGLE LLC
Inventor： Thomas Hoekman , Joseph Daniel Lowney , Alexander Y. Zhu
CPC classification number: G02B27/0172 , G02B27/288 , G02B27/44 , G02B5/203 , G02B2027/0178
Abstract: Techniques are described in which a view control layer is optically coupled to a waveguide having one or more diffraction structures. The view control layer selectively prevents light rays from interfacing with at least one diffraction structure of the waveguide based on a respective angle of incidence at which the light rays encounter the view control layer. In various embodiments, the view control layer may include a light control film, a polarization stack, and/or a dielectric stack angular filter.
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公开(公告)号：US20230375834A1
公开(公告)日：2023-11-23
申请号：US18136794
申请日：2023-04-19
Applicant: GOOGLE LLC
Inventor： Joseph Daniel Lowney
CPC classification number: G02B27/0172 , G02B27/281 , G02B2027/0178
Abstract: A polarization mechanism for a head-mounted device includes a linear polarization film and a waveplate film configured to polarize ambient light before it is guided to the eye of a user by a waveguide. The waveplate film is further configured to receive a reflection of the polarized ambient light off the waveguide and polarize the reflection in a circular direction such that the reflection is polarized in a first linear direction. The linear polarization film then receives the reflection polarized in the first linear direction from the waveplate film and polarizes the reflection in a second linear direction perpendicular to the first linear direction.
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公开(公告)号：US20230341292A1
公开(公告)日：2023-10-26
申请号：US18136798
申请日：2023-04-19
Applicant: GOOGLE LLC
Inventor： Joseph Daniel Lowney
IPC: G01M11/00
CPC classification number: G01M11/338
Abstract: An on-wafer testing mechanism includes multiple waveguides and test structures disposed on a wafer. Light sources are coupled to the wafer and provide beams of light to the structures disposed on the wafer by propagating the light through the wafer. In response to receiving at least a portion of a beam of light, a test structure is configured to guide the light to an exit location on the test structure. As light exits a test structure, a conoscope determines the diffraction efficiency of the test structure based on a measurement taken of the light exiting the test structure.
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公开(公告)号：US20250067981A1
公开(公告)日：2025-02-27
申请号：US18811186
申请日：2024-08-21
Applicant: GOOGLE LLC
Inventor： Joseph Daniel Lowney , Shreyas Potnis
IPC: G02B27/01
Abstract: An eyewear display includes a first waveguide incorporated into one lens of the eyewear display and a second waveguide incorporated into the other lens of the eyewear display. The first waveguide includes a first incoupler, and the second waveguide includes a second incoupler. The eyewear display also includes a light engine with a switchable panel to alternate between directing display light to the first incoupler and directing display light to the second incoupler.
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公开(公告)号：US20240192606A1
公开(公告)日：2024-06-13
申请号：US18080431
申请日：2022-12-13
Applicant: GOOGLE LLC
Inventor： Lu Tian , Wei Jin , Joseph Daniel Lowney , Thomas Mercier
CPC classification number: G03F7/70216 , G03F1/70 , G03F7/2022
Abstract: Systems and methods are provided for generating a two-dimensional pattern on a photoresist layer. A photoresist layer is exposed via a first exposure to a first unidimensional series of features alternatingly providing first minima and maxima of illumination intensity along a first dimension. The photoresist layer is then exposed via a second exposure to a second unidimensional series of features alternatingly providing second minima and maxima of illumination intensity along a second dimension that is angularly separated from the second dimension by an exposure rotation factor.
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Patent Agency Ranking
公开(公告)号：US12066631B2
公开(公告)日：2024-08-20
申请号：US18096910
申请日：2023-01-13
Applicant: GOOGLE LLC
Inventor： Thomas Hoekman , Joseph Daniel Lowney , Alexander Y. Zhu
CPC classification number: G02B27/0172 , G02B27/288 , G02B27/44 , G02B5/203 , G02B2027/0178
Abstract: Techniques are described in which a view control layer is optically coupled to a waveguide having one or more diffraction structures. The view control layer selectively prevents light rays from interfacing with at least one diffraction structure of the waveguide based on a respective angle of incidence at which the light rays encounter the view control layer. In various embodiments, the view control layer may include a light control film, a polarization stack, and/or a dielectric stack angular filter.
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公开(公告)号：US20230341688A1
公开(公告)日：2023-10-26
申请号：US18137397
申请日：2023-04-20
Applicant: GOOGLE LLC
Inventor： Joseph Daniel Lowney , Ali Karbasi
CPC classification number: G02B27/0172 , G02B27/0081 , G02B2027/0178
Abstract: A first waveguide of a stacked waveguide located closest to the eye of a user operates in a reflection mode such that the set of grating structures of the first waveguide are disposed on a surface of the first waveguide opposite the eye of the user and towards the interior of the stacked waveguide. Additionally, a second waveguide of the stacked waveguide located further from the eye of the user operates in a transmission mode such that the grating structures of the second waveguide are disposed on a surface of the second waveguide facing the eye of the user and facing the interior of the stacked waveguide.
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8.发明申请公开(公告)号：US20250076551A1
公开(公告)日：2025-03-06
申请号：US18728520
申请日：2022-12-06
Applicant: GOOGLE LLC
Inventor： Joseph Daniel Lowney , Wei Jin
Abstract: The present disclosure provides techniques to reduce or eliminate contaminants in a waveguide resulting from the waveguide fabrication process. A blocking layer is deposited on a grating layer to protect the grating layer from contamination, e.g., via diffusion, from a hardmask layer that is used to pattern the grating layer. Accordingly, the optical gratings resulting from the patterning of the grating layer have little or no contamination from the hardmask layer, thereby increasing the optical performance of the final waveguide product.
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公开(公告)号：US20250044595A1
公开(公告)日：2025-02-06
申请号：US18720252
申请日：2022-11-22
Applicant: GOOGLE LLC
Inventor： Joseph Daniel Lowney
Abstract: Systems and methods are provided involving a waveguide comprising an incoupler and an outcoupler. The incoupler is configured to receive display light representative of an image for display, and to direct a first portion of the display light to propagate within the waveguide along a first optical path and a second portion of the display light to propagate within the waveguide along a second optical path, such that the first optical path and the second optical path have substantially non-overlapping propagation angles. The outcoupler is configured to combine the first portion of the display light and the second portion of the display light to display a representation of the image.
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10.发明公开公开(公告)号：US20240361598A1
公开(公告)日：2024-10-31
申请号：US18139603
申请日：2023-04-26
Applicant: GOOGLE LLC
Inventor： Qinglan Huang , Wei Jin , Joseph Daniel Lowney
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B2027/0178
Abstract: Methods and apparatuses for applying anti-reflective structures to a waveguide of an augmented reality display device include producing two initial molds: one formed with high precision for diffractive optical structures, and one formed with lower precision for anti-reflective structures. The two initial molds are imprinted into a single resist layer to form an integrated mold, which is then usable to simultaneously form both diffractive optical structures and anti-reflective structures. Accordingly, the cost of producing the anti-reflective structures is minimized while the efficiency of forming the diffractive optical structures and anti-reflective structures is maximized.
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