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US 11,635,670 B2Granted
Dynamic neutral density filter
AssigneeSpectralics Ltd.
InventorsEran Falek, Yuval Kashter, Ran Abraham Bar-Yosef
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Abstract
Described herein is a dynamic optical modulator including a plurality of pixels arranged in a grid, the pixels comprising a plurality of unit-cells, the unit-cell comprising a dielectric layer sandwiched between two at least partially conductive layers, wherein the optical characteristics of each of said unit-cells is controlled by the application of a voltage across each of the pixels of the plurality of pixels.
Claims11
A dynamic metasurface optical modulator, comprising:
- a plurality of pixels arranged in a grid, said pixels comprising a plurality of unit-cells, said unit-cell comprising a dielectric layer sandwiched between two at least partially conductive layers,
- wherein the transmissivity of each of said plurality of pixels is dynamically adjustable between a range comprising a first extremum state where the surface of the pixel is substantially fully transmissive and a second extremum state where the surface of the pixel is substantially fully reflective/absorptive,
- wherein the optical characteristics of each of said unit-cells is controlled by the application of a voltage across each of said pixels of the plurality of pixels, and
- wherein each of said unit-cells comprises non-linear materials and the dimensional size of each of said unit-cells is smaller than half of the operating wavelength of said dynamic metasurface optical modulator.
1 more element
Dependencies are inferred from the claim text.