Title:
LIQUID CRYSTAL METASURFACES WITH CROSS-BACKPLANE OPTICAL REFLECTORS
Document Type and Number:
WIPO Patent Application WO/2023/168206
Kind Code:
A3
Abstract:
According to various embodiments, a tunable optical metasurface includes an array of elongated resonator rails arranged parallel to one another. Liquid crystal is positioned within an optical field region between adjacent resonator rails. A controller can selectively apply a voltage differential pattern to the elongated resonator rails to adjust a phase response thereof. According to various embodiments, a cross-backplane reflector is utilized that allows for mid-array routing or edge-array routing of electrical connections between the controller and the resonator rails. The cross-backplane reflector comprises a plurality of elongated optical reflectors extending parallel to one another and perpendicular to the array of resonator rails. An optically transmissive (e.g., transparent) dielectric may electrically separate the resonator rails from the optical reflectors. A pattern of vias formed therein facilitates electrical connections between the optical reflectors and the resonator rails.
Inventors:
AKSELROD GLEB M (US)
JOSBERGER ERIC EDWARD (US)
WEIDMAN MARK C (US)
PADMANABHA IYER PRASAD (US)
JOSBERGER ERIC EDWARD (US)
WEIDMAN MARK C (US)
PADMANABHA IYER PRASAD (US)
Application Number:
PCT/US2023/063362
Publication Date:
November 02, 2023
Filing Date:
February 27, 2023
Export Citation:
Assignee:
LUMOTIVE INC (US)
International Classes:
H01Q3/46; G02B1/00; G02B26/08; G02F1/29; H01L23/538; H03H9/02; G02F1/1347
Domestic Patent References:
| WO2021155302A1 | 2021-08-05 | |||
| WO2016146094A1 | 2016-09-22 |
Foreign References:
| US20190285798A1 | 2019-09-19 | |||
| US5386431A | 1995-01-31 | |||
| US20150301502A1 | 2015-10-22 | |||
| US20090078316A1 | 2009-03-26 | |||
| US11429008B1 | 2022-08-30 | |||
| US20080048917A1 | 2008-02-28 |
Attorney, Agent or Firm:
FLANAGAN, Justin K. (US)
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