Patent ID: 8594470

Claim:
A detection system, comprising: a detector comprising at least one layer, the detector including: a transmission component that includes at least one layer with laterally varying transmission properties, the transmission component configured to, when illuminated with input light, output sub-bands of optical wavelengths at respective positions along an output surface of the transmission component, including at least a first sub-band output at a first position of the transmission component output surface and a second sub-band output at a second position of the transmission component output surface; and a photosensing component configured to receive the one or more sub-bands of optical wavelengths output by the transmission component and to generate signals in response to the sub-bands of optical wavelengths, including generating a first signal responsive to the first sub-band and a second signal responsive to the second sub-band; and circuitry configured to determine changes in the first and second signals over time and to generate an output signal that includes information about wavelength changes in the sub-bands output from the transmission.