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公开(公告)号：WO2022140436A1
公开(公告)日：2022-06-30
申请号：PCT/US2021/064679
申请日：2021-12-21
申请人： MAGIC LEAP, INC.
发明人： LI, Ling , PEROZ, Christophe , CHANG, Chieh , BHAGAT, Sharad D. , ONG, Ryan Jason , KARBASI, Ali , RUGG, Stephen Richard , MELLI, Mauro , MESSER, Kevin , HILL, Brian George , WEST, Melanie Maputol
摘要： In some embodiments, a near-eye, near-eye display system comprises a stack of waveguides having pillars in a central, active portion of the waveguides. The active portion may include light outcoupling optical elements configured to outcouple image light from the waveguides towards the eye of a viewer. The pillars extend between and separate neighboring ones of the waveguides. The light outcoupling optical elements may include diffractive optical elements that are formed simultaneously with the pillars, for example, by imprinting or casting. The pillars are disposed on one or more major surfaces of each of the waveguides. The pillars may define a distance between two adjacent waveguides of the stack of waveguides. The pillars may be bonded to adjacent waveguides may be using one or more of the systems, methods, or devices herein. The bonding provides a high level of thermal stability to the waveguide stack, to resist deformation as temperatures change.
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公开(公告)号：WO2021174062A1
公开(公告)日：2021-09-02
申请号：PCT/US2021/019997
申请日：2021-02-26
申请人： MAGIC LEAP, INC.
发明人： MELLI, Mauro , CHANG, Chieh , LI, Ling , WEST, Melanie Maputol , PEROZ, Christophe , KARBASI, Ali , BHAGAT, Sharad D. , HILL, Brian George
摘要： Methods are disclosed for fabricating molds for forming eyepieces having waveguides with integrated spacers. The molds are formed by etching deep holes (e.g., 5μm to 1000μm deep) into a substrate using a wet etch or dry etch. The etch masks for defining the holes may be formed with a thick metal layer and/or multiple layers of different metals. A resist layer may be disposed over the etch mask. The resist layer may be patterned to form a pattern of holes, the pattern may be transferred to the etch mask, and the etch mask may be used to transfer the pattern into the underlying 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 integrated spacers. The hardened polymer may be removed from the mold to form a waveguide with integrated spacers.
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公开(公告)号：WO2020263871A1
公开(公告)日：2020-12-30
申请号：PCT/US2020/039204
申请日：2020-06-23
申请人： MAGIC LEAP, INC.
发明人： LI, Ling , CHANG, Chieh , BHAGAT, Sharad D. , PEROZ, Christophe , HILL, Brian George , PATTERSON, Roy Matthew , SADAM, Satish
摘要： A method of aligning a stencil to an eyepiece wafer includes providing the stencil, positioning the stencil with respect to a first light source, and determining locations of at least two stencil apertures. The method also includes providing the eyepiece wafer. The eyepiece wafer includes at least two eyepiece waveguides, each eyepiece waveguide including an incoupling grating and a corresponding diffraction pattern. The method further includes directing light from one or more second light sources to impinge on each of the corresponding diffraction patterns, imaging light diffracted from each incoupling grating, determining at least two incoupling grating locations, determining offsets between corresponding stencil aperture locations and incoupling grating locations, and aligning the stencil to the eyepiece wafer based on the determined offsets.
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公开(公告)号：WO2020263866A1
公开(公告)日：2020-12-30
申请号：PCT/US2020/039199
申请日：2020-06-23
申请人： MAGIC LEAP, INC.
发明人： LI, Ling , KARBASI, Ali , PEROZ, Christophe , CHANG, Chieh , BHAGAT, Sharad D. , HILL, Brian George , WEST, Melanie Maputol , ONG, Ryan Jason , DENG, Xiaopei , YANG, Shuqiang , XU, Frank Y.
摘要： A head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting or casting. The spacers are disposed on one or more major surfaces of the waveguides and define a distance between immediately adjacent waveguides. Adjacent waveguides may be bonded using adhesives on the spacers. The spacers may fit within indentations of overlying waveguides. In some cases, the spacers may form one or more walls of material substantially around a perimeter of an associated waveguide. Vent holes may be provided in the walls to allow gas flow into and out from an interior volume defined by the spacers. Debris trapping structures may be provided between two walls of spacers to trap and prevent debris from entering into the interior volume.
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公开(公告)号：WO2020092620A1
公开(公告)日：2020-05-07
申请号：PCT/US2019/058931
申请日：2019-10-30
申请人： MAGIC LEAP, INC.
发明人： LI, Ling , CHANG, Chieh , BHAGAT, Sharad D. , PEROZ, Christophe , JONES, William K., Jr. , DENG, Xiaopei
摘要： Fabrication of augmented reality (AR) and mixed reality (MR) polymer eyepiece assemblies and the resulting AR/MR polymer eyepiece assemblies may include one or more features, separately or in any appropriate combination, to compensate for expected deformation and to maintain substantially uniform gaps between polymer layers. Such features include fabricating polymer eyepiece assemblies with components having coefficients of thermal expansion (CTE) that are substantially the same; modifying the surface chemistry or structure of one or more polymer layers to increase hydrophobicity or omniphobicity of the polymer layer; disposing adhesive between adjacent polymer layers in continuous and/or extended configurations; and disposing microspheres of different sizes at selected locations between polymer layers.
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公开(公告)号：WO2021263181A1
公开(公告)日：2021-12-30
申请号：PCT/US2021/039208
申请日：2021-06-25
申请人： MAGIC LEAP, INC.
发明人： CHANG, Chieh , PEROZ, Christophe , ONG, Ryan Jason , LI, Ling , BHAGAT, Sharad D. , BHARGAVA, Samarth
IPC分类号： G02B27/00 , G03F7/20 , H01L21/66 , H01L21/67 , H01L21/68 , G02B25/00 , G02B2027/0178 , G02B27/0081 , G02B27/0172 , G02B6/02033 , G02B6/02066
摘要： A method, includes providing a wafer including a first surface grating extending over a first area of a surface of the wafer and a second surface grating extending over a second area of the surface of the wafer; de-functionalizing a portion of the surface grating in at least one of the first surface grating area and the second surface grating area; and singulating an eyepiece from the wafer, the eyepiece including a portion of the first surface grating area and a portion of the second surface grating area. The first surface grating in the eyepiece corresponds to an input coupling grating for a head-mounted display and the second surface grating corresponds to a pupil expander grating for the head-mounted display.
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7.发明申请
公开(公告)号：WO2020263834A1
公开(公告)日：2020-12-30
申请号：PCT/US2020/039147
申请日：2020-06-23
申请人： MAGIC LEAP, INC.
摘要： A diffractive waveguide stack includes first, second, and third diffractive waveguides for guiding light in first, second, and third visible wavelength ranges, respectively. The first diffractive waveguide includes a first material having first refractive index at a selected wavelength and a first target refractive index at a midpoint of the first visible wavelength range. The second diffractive waveguide includes a second material having a second refractive index at the selected wavelength and a second target refractive index at a midpoint of the second visible wavelength range. The third diffractive waveguide includes a third material having a third refractive index at the selected wavelength and a third target refractive index at a midpoint of the third visible wavelength range. A difference between any two of the first target refractive index, the second target refractive index, and the third target refractive index is less than 0.005 at the selected wavelength.
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8.发明申请
公开(公告)号：WO2019195193A1
公开(公告)日：2019-10-10
申请号：PCT/US2019/025236
申请日：2019-04-01
申请人： MAGIC LEAP, INC.
发明人： PEROZ, Christophe , CHANG, Chieh , BHAGAT, Sharad, D. , LIU, Victor, Kai , PATTERSON, Roy, Matthew , JURBERGS, David, Carl , KHORASANINEJAD, Mohammadreza , LI, Ling
摘要： In some embodiments, a head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting. The spacers are disposed on one major surface of each of the waveguides and indentations are provided on an opposite major surface of each of the waveguides. The indentations are sized and positioned to align with the spacers, thereby forming a self-aligned stack of waveguides. Tops of the spacers may be provided with light scattering features, anti-reflective coatings, and/or light absorbing adhesive to prevent light leakage between the waveguides. As seen in a top-down view, the spacers may be elongated along the same axis as the diffractive optical elements. The waveguides may include structures (e.g., layers of light absorbing materials, rough surfaces, light out-coupling optical elements, and/or light trapping microstructures) along their edges to mitigate reflections and improve the display contrast.
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公开(公告)号：WO2021072111A1
公开(公告)日：2021-04-15
申请号：PCT/US2020/054828
申请日：2020-10-08
申请人： MAGIC LEAP, INC.
发明人： BHAGAT, Sharad D. , JURBERGS, David Carl , ONG, Ryan Jason , PEROZ, Christophe , CHANG, Chieh , LI, Ling
摘要： Color-selective waveguides, methods for fabricating color-selective waveguides, and augmented reality (AR)/mixed reality (MR) applications including color-selective waveguides are described. The color-selective waveguides can advantageously reduce or block stray light entering a waveguide (e.g., red, green, or blue waveguide), thereby reducing or eliminating backreflection or back-scattering into the eyepiece.
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公开(公告)号：WO2021011410A1
公开(公告)日：2021-01-21
申请号：PCT/US2020/041699
申请日：2020-07-10
申请人： MAGIC LEAP, INC.
发明人： CHANG, Chieh , LIU, Victor Kai , BHARGAVA, Samarth , LI, Ling , BHAGAT, Sharad D. , PEROZ, Christophe , MARENO, Jason Donald
IPC分类号： G02C5/04
摘要： A dynamic eyepiece for projecting an image to an eye of a viewer includes a waveguide layer having an input surface, an output surface opposing the input surface, and a periphery. The waveguide layer is configured to propagate light therein. The dynamic eyepiece also includes a mechanical structure coupled to at least a portion of the periphery of the waveguide layer. The mechanical structure is operable to apply a first mechanical force to the at least a portion of the periphery of the waveguide layer to impose a first surface profile on the output surface of the waveguide layer and apply a second mechanical force to the at least a portion of the periphery of the waveguide layer to impose a second surface profile different from the first surface profile on the output surface of the waveguide layer.
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