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公开(公告)号：US20240045216A1
公开(公告)日：2024-02-08
申请号：US18555502
申请日：2022-04-21
申请人： Magic Leap, Inc.
CPC分类号： G02B27/0172 , G02B6/34 , B29D11/00769 , B29D11/0073 , B29D11/00663 , G02B2027/0178 , B29K2995/0024 , B29K2995/0097 , B29K2033/00
摘要： Structures for forming an optical feature and methods for forming the optical feature are disclosed. In some embodiments, the structure comprises a patterned layer comprising a pattern corresponding to the optical feature; a base layer; and an intermediate layer bonded to the patterned layer and the base layer.
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2.发明公开公开(公告)号：US20240359372A1
公开(公告)日：2024-10-31
申请号：US18686440
申请日：2022-08-17
申请人： Magic Leap, Inc.
发明人： Shuqiang YANG , Vikramjit SINGH , David James LENTZ , Frank Y. XU , Marlon Edward MENEZES , Yanhua WANG
CPC分类号： B29C43/021 , B29C33/424 , B29C43/40 , B29C2043/025 , B29L2011/0075
摘要： Methods are disclosed for fabricating molds for forming waveguides with integrated spacers for forming eyepieces. The molds are formed by etching features (e.g., 1 μm to 1000 μm deep) into a substrate comprising single crystalline material using an anisotropic wet etch. The etch masks for defining the large features may comprise a plurality of holes, wherein the size and shape of each hole at least partially determine the depth of the corresponding large feature. The holes may be aligned along a crystal axis of the substrate and the etching may automatically stop due to the crystal structure of the substrate. The patterned substrate may be utilized as a mold onto which a flowable polymer may be introduced and allowed to harden. Hardened polymer in the holes may form a waveguide with integrated spacers. The mold may be also used to fabricate a platform comprising a plurality of vertically extending microstructures of precise heights, to test the curvature or flatness of a sample, e.g., based on the amount of contact between the microstructures and the sample.
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3.发明公开公开(公告)号：US20230341692A1
公开(公告)日：2023-10-26
申请号：US18319745
申请日：2023-05-18
申请人： Magic Leap, Inc.
发明人： Jeffrey Dean SCHMULEN , Neal Paul RICKS , Samarth BHARGAVA , Kevin MESSER , Victor Kai LIU , Matthew Grant DIXON , Xiaopei DENG , Marlon Edward MENEZES , Shuqiang YANG , Vikramjit SINGH , Kang LUO , Frank Y. XU
CPC分类号： G02B27/0172 , G02B6/0026 , G02B6/26 , G02B27/1046 , G02B27/4233 , G06T19/006 , G02B6/10
摘要： Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide. The in-coupling optical element can be truncated or have reduced diffraction efficiency along the propagation direction to reduce the occurrence of light loss due to re-bounce of in-coupled light, resulting in less in-coupled light being prematurely out-coupled and/or absorbed during subsequent interactions with the in-coupling optical element.
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