Patent attributes
An imaging device includes a detector array and an aperture disposed along an optical path, with an array of filter elements positioned within the aperture in the optical path. Each filter element is configured to filter out energy that is within a unique wavelength band of interest within a wavelength spectrum of interest, to form filtered energy within the wavelength spectrum of interest that is outside the unique wavelength band of interest. The filtered energy is passed from each filter element to a plurality subsets of non-contiguous detector elements in the detector array, which in turn each generate one or more detector values based on the received energy. The detector values may be processed to determine an intensity value for the wavelength band of interest.
