Tunable imaging systems and methods thereof

An imaging system comprising:

• an image sensor comprising a plurality of pixel sensors, each pixel sensor comprising:
• a photodetector;
• a stack of two or more filter layers comprising a given transition metal dichalcogenide (TMD);
• and
• one or more transparent glass layers positioned between adjacent filter layers;
• and
• a pair of conductors positioned at opposite ends of the stacks of filter layers of one or more of the pixel sensors of the image sensor,
• wherein the stacks of filter layers selectively transmit received radiation to the photodetectors based on a respective transmissivity of the filter layers, and
• wherein the transmissivity of the filter layers is based on (i) the given TMD of the respective filter layers and (ii) an electric field provided between the pair of conductors.

A method of determining an intensity of radiation received by a pixel sensor, the method comprising:

• setting a tuning context of a tuner of a filter stack of the pixel sensor, the filter stack being positioned between a photodiode of the pixel sensor and a radiation source, wherein the filter stack includes two or more filter layers comprising a given transition metal dichalcogenide (TMD), wherein one or more transparent glass layers are positioned between adjacent filter layers in the filter stack;
• receiving radiation at the filter stack from a radiation source;
• selectively transmitting the radiation received at the filter stack to a photodetector, wherein the radiation is selectively transmitted based on a transmissivity of the filter layers of the filter stack;
• measuring an intensity of radiation received by the photodetector from the filter stack;
• determining the transmissivity of the filter stack based on both (i) the given TMD of the filter layers and (ii) the tuning context;
• and
• determining an intensity of the radiation received by the filter stack based on the measured intensity of radiation received by the photodetector and the determined transmissivity of the filter layers.