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公开(公告)号:US20230004049A1
公开(公告)日:2023-01-05
申请号:US17854055
申请日:2022-06-30
IPC分类号: G02F1/1337
摘要: The azo dye brilliant yellow operates to align liquid crystal molecules in three dimensions, for example to establish a desired in-plane alignment and pre-tilt angle. This technique provides a wide range selectable and re-writable pretilt angles from 0° to nearly 90°.
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公开(公告)号:US11131898B2
公开(公告)日:2021-09-28
申请号:US16738150
申请日:2020-01-09
发明人: Rajratan Basu , Daniel Kinnamon , Christopher M. Spillmann , Jakub Kolacz , Jesse A. Frantz , Jason D. Myers
IPC分类号: G02F1/141 , G02F1/1337 , G02F1/135 , G02F1/155 , G02F1/03
摘要: A graphene and liquid crystal device comprising a substrate, a layer of graphene on the substrate, and a layer of liquid crystal on the layer of graphene. A graphene and liquid crystal device wherein the layer of graphene is an alignment layer and an electrode for a liquid crystal device.
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公开(公告)号:US10915004B2
公开(公告)日:2021-02-09
申请号:US16287017
申请日:2019-02-27
发明人: Jason D. Myers , Jesse A. Frantz , Christopher M. Spillmann , Robel Y. Bekele , Henry G. Gotjen , Jawad Naciri , Jakub Kolacz , L. Brandon Shaw , Jasbinder S. Sanghera
IPC分类号: G02F1/295
摘要: An optical system has a beam-steering device, a light source, and a controller that controls the light source to actively control wavelength of the incoming light to control the output angle of the outgoing light output from the BS device. The BS device may have incoupler, waveguide, and/or outcoupler electrodes, and the system may have corresponding controllable voltage supplies actively controlled by the controller to selectively modify electric fields applied to the BS device to control corresponding operating characteristics of the BS device (e.g., in-plane and/or out-of-plane output angles of the outgoing light and/or device incoupling angle). An alternative optical system has a BS device, a detector array that generates detector signals corresponding to outgoing light received from the BS device, and a controller that processes the detector signals to determine one or more wavelengths of the outgoing light.
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公开(公告)号:US20220373409A1
公开(公告)日:2022-11-24
申请号:US17735613
申请日:2022-05-03
IPC分类号: G01L1/16 , G02F1/11 , H01L41/113
摘要: Piezo-optic transducers convert variations in mechanical stress to a change in optical properties by coupling electro-optic and piezo-electric elements in a format suited to a single composite device without needing on-board electronics.
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公开(公告)号:US20190265573A1
公开(公告)日:2019-08-29
申请号:US16287017
申请日:2019-02-27
发明人: JASON D. MYERS , Jesse A. Frantz , Christopher M. Spillmann , Robel Y. Bekele , Henry G. Gotjen , Jawad Naciri , Jakub Kolacz , L. Brandon Shaw , Jasbinder S . Sanghera .
IPC分类号: G02F1/295
摘要: An optical system has a beam-steering device, a light source, and a controller that controls the light source to actively control wavelength of the incoming light to control the output angle of the outgoing light output from the BS device. The BS device may have incoupler, waveguide, and/or outcoupler electrodes, and the system may have corresponding controllable voltage supplies actively controlled by the controller to selectively modify electric fields applied to the BS device to control corresponding operating characteristics of the BS device (e.g., in-plane and/or out-of-plane output angles of the outgoing light and/or device incoupling angle). An alternative optical system has a BS device, a detector array that generates detector signals corresponding to outgoing light received from the BS device, and a controller that processes the detector signals to determine one or more wavelengths of the outgoing light.
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公开(公告)号:US20190204710A1
公开(公告)日:2019-07-04
申请号:US16238642
申请日:2019-01-03
发明人: JASON D. MYERS , Jesse A. Frantz , Christopher M. Spillmann , Robel Y. Bekele , Henry G. Gotjen , Jawad Naciri , Jakub Kolacz , L. Brandon Shaw , Jasbinder S. Sanghera
CPC分类号: G02F1/292 , G02B6/305 , G02F1/0118 , G02F1/1326 , G02F1/295 , G02F2001/0113 , G02F2001/291 , G02F2203/24
摘要: An optical system has a beam-steering device having a planar waveguide region between a tapered incoupler and a tapered outcoupler that respectively define opposing incoupler and outcoupler facets of the BS device. Each region has a substrate, a subcladding layer over the substrate, a core layer over the subcladding, and a top cladding layer over the core. Within the incoupler, at least one of the subcladding and the top cladding has a material having a refractive index that varies with an applied field (e.g., an electric field) applied at the incoupler. The optical system also has a field-applying device that applies the applied field at the incoupler, an output detector that generates a feedback signal based on detected outgoing light output from the outcoupler, and a controller that controls the field-applying device based on the feedback signal to alter the light output from the outcoupler.
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公开(公告)号:US20210286231A1
公开(公告)日:2021-09-16
申请号:US17036675
申请日:2020-09-29
发明人: Jakub Kolacz , Henry G. Gotjen , Christopher M. Spillmann , Jawad Naciri , Jason D. Myers , Jesse A. Frantz , Robel Y. Bekele
摘要: A liquid crystal (LC) beam steerer includes a waveguide apparatus with a waveguide having a high-index core in contact with a variable-index liquid crystal (LC) cladding, wherein a voltage applied to the LC cladding is effective to steer a beam of light passing through the high-index core. Measuring the bulk birefringence and/or the capacitance characteristics of the LC can facilitate beam steering.
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公开(公告)号:US20210255516A1
公开(公告)日:2021-08-19
申请号:US17308430
申请日:2021-05-05
发明人: Rajratan Basu , Daniel Kinnamon , Christopher M. Spillmann , Jakub Kolacz , Jesse A. Frantz , Jason D. Myers
IPC分类号: G02F1/141 , G02F1/1337
摘要: A graphene and liquid crystal device comprising a substrate, a layer of graphene on the substrate, and a layer of liquid crystal on the layer of graphene. A graphene and liquid crystal device wherein the layer of graphene is an alignment layer and an electrode for a liquid crystal device.
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公开(公告)号:US20200292911A1
公开(公告)日:2020-09-17
申请号:US16881225
申请日:2020-05-22
发明人: Jesse A. Frantz , Jason D. Myers , Robel Y. Bekele , Christopher M. Spillmann , Jawad Naciri , Jakub Kolacz , Henry G. Gotjen , Jason Auxier , Leslie Brandon Shaw , Jasbinder S. Sanghera
IPC分类号: G02F1/29 , G02F1/01 , G02F1/13 , G02F1/1337 , G02F1/295 , C03C3/32 , C03C13/04 , G02F1/1343 , G02F1/00
摘要: A liquid crystal-based non-mechanical beam steering device that permits steering in the mid-wave infrared and has a chalcogenide waveguide. The waveguide core, the subcladding, or both comprise a chalcogenide glass. The liquid crystal-based non-mechanical beam steering device has a tapered subcladding and a liquid crystal layer.
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公开(公告)号:US20180024413A1
公开(公告)日:2018-01-25
申请号:US15652604
申请日:2017-07-18
发明人: Jesse A. Frantz , Jason D. Myers , Christopher M. Spillmann , Jawad Naciri , Banahalli R. Ratna , Leslie Brandon Shaw , Jasbinder S. Sanghera , Robel Y. Bekele , Jakub Kolacz
IPC分类号: G02F1/313
CPC分类号: G02F1/313 , G02F1/1303 , G02F1/13378 , G02F1/133784 , G02F2201/12 , G02F2202/09
摘要: A method for achieving alignment and optical switching of a liquid crystal (LC) layer that is deposited on chalcogenide glass (ChG). Direct brushing of ChG produces an effective LC alignment layer. Also disclosed is the related waveguide assembly for achieving alignment and optical switching of a liquid crystal (LC) layer deposited on chalcogenide glass (ChG).
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