Patent ID: 9074993
Filing Date: 2015-07-07
Classification: G01J,G01N

Abstract:
1. An apparatus, comprising: at least two polarizing gratings that produce a dispersion compensated shear between portions of the an input light flux associated with first and second polarizations; a detector situated to receive an output light flux corresponding to a combination of the sheared first and second portions of the input light flux and produce an image signal; a polarization analyzer situated between the at least one grating and the detector; and an image processor that produces a polarization image based on the image signal, wherein the at least two polarizing gratings includes a first grating situated to produce a first shear portion by directing the first polarization along a first direction and the second polarization along a second direction, and a second grating situated to produce a second shear portion by directing the first polarization directed by the first grating along the second direction and the second polarization directed by the first grating along the first direction.