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US 12,520,052 B2Granted
Electrically switchable photonic material and method of forming
AssigneesSamsung Electronics Co., Ltd., Massachusetts Institute of Technology
InventorsRadwanul Hasan Siddique, Youngzoon Yoon, Mathias Kolle, Benjamin Miller
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Abstract
A photonic device including a filter comprising an electrically switchable array, wherein the electrically switchable array includes alternating layers of polymer and polymer-dispersed liquid crystal, wherein the electrically switchable array is tunable under an applied electric field.
Claims6
A photonic device including:
- a filter comprising:
- an electrically switchable array, wherein the electrically switchable array includes:
- alternating layers of polymer and polymer-dispersed liquid crystal, wherein the electrically switchable array is tunable under an applied electric field;
- and
- a Red-Green-Blue (RGB) image sensor, wherein the electrically switchable array is integrated into the RGB image sensor,
- wherein fabricating the filter includes:
- using spatially incoherent light combined with a rough back reflector to generate a standing wave pattern in a homogeneous liquid mixture, wherein the homogeneous liquid mixture is a precursor mixture including a monomer, photoinitiator and liquid crystal.
4 more elements
A method of imaging, the method comprising:
- imaging a scene in a first frame with a Bayer filter to receive RGB values, wherein the Bayer filter includes a Red-Green-Blue (RGB) image sensor and an electrically switchable array integrated into the RGB image sensor, and wherein the electrically switchable array is turned off to receive the RGB values;
- imaging the scene in a second frame with the electrically switchable array filter turned on to receive light intensity values,
- converting the RGB values of the first frame to Y′CrCb values,
- removing the Y channel in the Y′CrCb frame to form a CrCb frame,
- subsampling the CrCb frame to form a subframe, and
- combining the CrCb subframe and the second frame to reconstruct a final scene,
- wherein fabricating the electrically switchable array includes:
- using spatially incoherent light combined with a rough back reflector to generate a standing wave pattern in a homogeneous liquid mixture, wherein the homogeneous liquid mixture is a precursor mixture including a monomer, photoinitiator and liquid crystal.
5 more elements
Dependencies are inferred from the claim text.