Invention Grant
- Patent Title: Tunable liquid crystal metasurfaces
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Application No.: US16505687Application Date: 2019-07-08
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Publication No.: US10665953B1Publication Date: 2020-05-26
- Inventor: Gleb M. Akselrod , Yuanmu Yang , Patrick Bowen
- Applicant: Lumotive, LLC
- Applicant Address: US WA Bellevue
- Assignee: Lumotive LLC
- Current Assignee: Lumotive LLC
- Current Assignee Address: US WA Bellevue
- Agency: Phillips Winchester
- Agent Justin K. Flanagan
- Main IPC: G02F1/03
- IPC: G02F1/03 ; H01Q15/00 ; G01S17/02 ; G01S7/484 ; G01S7/486 ; H01Q3/22

Abstract:
A tunable, optical metasurface can include an optically reflective surface to reflect optical radiation, such as infrared laser light. An array of optical resonant antennas may, for example, extend from or otherwise be positioned on the reflective surface with sub-wavelength spacings of, for example, less than one-half of a wavelength. Voltage-controlled liquid crystal may be positioned in the optical field region of each of the optical resonant antennas. A controller may apply a voltage differential bias pattern to the liquid crystal of optical resonant antennas, that may be arranged in tiled, interleaved, or randomly arranged subsets of optical resonant antennas to attain one-dimensional beam steering, two-dimensional beam steering, and/or spatial beam shaping.
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