Patent ID: 8389939

Claim:
An apparatus for detecting radiance at a plurality of wavelengths comprising: an arrayed pixel sensor with a plurality of sub-pixel sections comprising: a first sub-pixel section configured to detect radiance received from a radiating body at a first wavelength; and a second sub-pixel section configured to detect radiance received from the radiating body at a second wavelength; an array of metallic nanostructures embedded in a dielectric medium contained in the plurality of sub-pixel sections wherein the metallic nanostructures have a first dimension for at least a first sub-pixel section and a second dimension for at least a second sub-pixel section; an electrical detector functionally connected to each sub-pixel section; at least one memory; and at least one processor configured to execute computer program stored in the at least one memory to: determine a ratio of the radiance detected at the first wavelength and the radiance detected at the second wavelength; and determine a parameter of the radiating body based on the ratio.