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公开(公告)号：US20210223548A1
公开(公告)日：2021-07-22
申请号：US16782604
申请日：2020-02-05
发明人： Andrew MAIMONE , Junren WANG , Barry SILVERSTEIN
摘要： An optical device for a head-mounted display device includes a first partial reflector and a second partial reflector positioned relative to the first partial reflector so that the second partial reflector receives first light transmitted through the first partial reflector and reflects at least a portion of the first light toward the first partial reflector as second light. At least a portion of the second light is reflected by the first partial reflector as third light, and at least a portion of the third light is transmitted through the second partial reflector. At least one of the first partial reflector or the second partial reflector includes a reflective holographic element.
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公开(公告)号：US20210208396A1
公开(公告)日：2021-07-08
申请号：US16733092
申请日：2020-01-02
发明人： Gang LI , Changwon JANG , Giseung BANG , Andrew MAIMONE , Mengfei WANG , Afsoon JAMALI , Lu LU , Hao YU
IPC分类号： G02B27/01
摘要： An optical assembly includes a beam steering device and a holographic optical element. The beam steering device is switchable between different states including a first state and a second state. The beam steering device includes a first polarization-selective optical element and a first tunable optical retarder optically coupled with the first polarization-selective optical element. The holographic optical element is positioned relative to the beam steering device for receiving light from the beam steering device and projecting a first light pattern while the beam steering device is in the first state and a second light pattern distinct from the first light pattern while the beam steering device is in the second state.
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公开(公告)号：US20210017150A1
公开(公告)日：2021-01-21
申请号：US17064251
申请日：2020-10-06
发明人： Ganghun KIM , Andrew MAIMONE , Alexander Jobe FIX , Robert Dale CAVIN , Hee Yoon LEE , Matthieu Charles Raoul LEIBOVICI , Brian WHEELWRIGHT , Douglas Robert LANMAN
IPC分类号： C07D401/04 , A01N43/50 , A01N43/90 , A01N53/00 , A01N43/54 , C07D401/14 , C07D405/14 , C07D487/04 , C07D498/04
摘要： A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.
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公开(公告)号：US20210364987A1
公开(公告)日：2021-11-25
申请号：US16878018
申请日：2020-05-19
发明人： Gang LI , Kiseung BANG , Andrew MAIMONE , Changwon JANG , Mengfei WANG , Afsoon JAMALI , Junren WANG
摘要： A holographic recording system includes a linear translation stage configured to position a holographic material layer, a light source configured to emit a laser beam, a beam splitting subsystem configured to split the laser beam into a first light beam and a second light beam and direct the second light beam towards the holographic material layer, a spatial-light modulator configured to implement a fringe pattern that modulates the first light beam to generate an object beam, a filter configured to filter the object beam, a demagnification optical subsystem configured to demagnify the object beam, and a switchable grating stack configurable to direct the object beam to a set of directions towards the holographic material layer to interfere with the second light beam. In some embodiments, the switchable grating stack includes a plurality of polarization gratings and/or a plurality of switchable waveplates arranged in a stack.
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公开(公告)号：US20210215938A1
公开(公告)日：2021-07-15
申请号：US17218798
申请日：2021-03-31
发明人： Andrew MAIMONE , Oleg YAROSHCHUK
摘要： A system is provided. The system includes a waveguide configured to guide an image light to propagate inside the waveguide. The system also includes a plurality of diffractive components coupled to the waveguide and switchable between operating in a diffraction state to direct the image light from the waveguide to an eye-box of the system, and operating in a non-diffraction state to transmit a light from a real-world environment to the eye-box. The system further includes a controller coupled with the plurality of diffractive components and configured to switch each of the plurality of diffractive components between operating in the diffraction state during a virtual-world subframe of a display frame and operating in the non-diffraction state during a real-world subframe of the display frame.
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公开(公告)号：US20210116776A1
公开(公告)日：2021-04-22
申请号：US16657585
申请日：2019-10-18
发明人： Yingfei JIANG , Afsoon JAMALI , Changwon JANG , Adrian TRAVIS , Andrew MAIMONE , Lu LU
摘要： A liquid crystal (LC) mixture for a pitch variable optical element is provided. The LC mixture includes a host LC and one or more LC dimers dissolved as a guest in the host LC. The host LC and the one or more LC dimers have respective dielectric anisotropies of opposite signs in nematic phase. A net dielectric anisotropy of the LC mixture is substantially neutral.
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公开(公告)号：US20220091323A1
公开(公告)日：2022-03-24
申请号：US17029963
申请日：2020-09-23
发明人： Oleg YAROSHCHUK , Giuseppe CALAFIORE , Alireza MOHEGHI , Andrew MAIMONE , Barry David SILVERSTEIN
摘要： A device includes a waveguide, an in-coupling element, and an out-coupling element coupled with the waveguide. The waveguide, the in-coupling element, and the out-coupling element are configured to deliver a plurality of portions of an image light to an eye-box of the device. At least one of the in-coupling element or the out-coupling element includes a polarization selective diffractive element. The polarization selective diffractive element includes a grating including a plurality of microstructures defining a plurality of grooves filled with a passive optically anisotropic material having a first effective refractive index along a groove direction of the grooves and a second effective refractive index along an in-plane direction perpendicular to the groove direction. One of the first effective refractive index or the second effective refractive index substantially matches with a refractive index of the microstructures.
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公开(公告)号：US20220026721A1
公开(公告)日：2022-01-27
申请号：US17495751
申请日：2021-10-06
发明人： Afsoon JAMALI , Lu LU , Andrew MAIMONE , Alireza MOHEGHI , Wai Sze Tiffany LAM , Scott Charles MCELDOWNEY , Douglas Robert LANMAN
摘要： A near eye display (NED) includes an electronic display configured to output image light. Further, the NED includes an eye tracking module and multiple optical elements that are combined to form an optical system to allow for changes in position of one or both eyes of a user of the NED. Various types of such optical elements, which may have optical states that are switchable, may be used to steer a light beam toward the user's eye. A direction of the steering may be based on eye tracking information measured by the eye tracking module.
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公开(公告)号：US20210223549A1
公开(公告)日：2021-07-22
申请号：US16784718
申请日：2020-02-07
发明人： Andrew MAIMONE , Junren WANG , Barry SILVERSTEIN
摘要： An optical device for a head-mounted display device includes a first partial reflector and a second partial reflector positioned relative to the first partial reflector so that the second partial reflector receives first light transmitted through the first partial reflector and reflects at least a portion of the first light toward the first partial reflector as second light. At least a portion of the second light is reflected by the first partial reflector as third light, and at least a portion of the third light is transmitted through the second partial reflector. At least one of the first partial reflector or the second partial reflector includes a reflective holographic element.
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公开(公告)号：US20210191122A1
公开(公告)日：2021-06-24
申请号：US16726130
申请日：2019-12-23
发明人： Oleg YAROSHCHUK , Giuseppe CALAFIORE , Alireza MOHEGHI , Andrew MAIMONE , Barry David SILVERSTEIN
摘要： An optical device includes a light source assembly configured to generate an image light; and at least one waveguide including an in-coupling element and an out-coupling element configured to transmit, via the at least one waveguide, a plurality of light fields of the image light to an eye-box of the optical device, in a time-multiplexing manner. At least one of the in-coupling element or the out-coupling element includes at least one switchable diffractive optical grating, which includes a surface relief grating (SRG) filled with an optically anisotropic material having a first principal refractive index along a groove direction of the SRG and a second principal refractive index along an in-plane direction perpendicular to the groove direction. One of the first and second refractive principal refractive indices substantially matches a refractive index of the SRG, and the other mismatches.
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