Short Wave Infrared Polarimeter
AssigneePolaris Sensor Technologies, Inc.
InventorJ. Larry Pezzaniti
Life of this patent
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Abstract
A short wave infrared polarimeter comprising a pixelated polarizer array and an Indium-Gallium-Arsenide (“InGaAs”) focal plane array. The short wave infrared polarimeter optionally includes a micro-lens array and/or an aperture layer
Claims12
A short wave infrared polarimeter comprising a PPA and an InGaAs FPA of equivalent pitches, the PPA comprising a first substrate and pixels for polarizing energy from a source, each said PPA pixel comprising a wire grid comprising wires laid directly on the first substrate and the InGaAs FPA comprising a second substrate and pixels comprising active areas, the PPA affixed to and parallel with the InGaAs FPA, and the PPA and the InGaAs FPA aligned so that the PPA pixels correspond one-to-one to the InGaAs FPA pixels and each of the PPA pixels transmits the polarized energy to one of the InGaAs FPA pixels.
A shortwave infrared polarimeter comprising a PPA and an InGaAs FPA of equivalent pitches, the PPA comprising a first substrate and pixels for polarizing energy from a source and said polarized energy having an extinction ratio of at least 100:1 of a desired polarization state to an undesired polarization state, each said PPA pixel comprising a wire grid comprising wires laid directly on the first substrate and the InGaAs FPA comprising a second substrate and pixels comprising active areas, the PPA affixed to and parallel with the InGaAs FPA, and the PPA and the InGaAs FPA aligned so that the PPA pixels correspond one-to-one to the InGaAs FPA pixels, each of the PPA pixels transmits at least 95% of the polarized energy to one of the InGaAs FPA pixels.
Dependencies are inferred from the claim text.