POLARIZATION HYPERSPECTRAL/MULTISPECTRAL IMAGER AND METHOD

摘要

A system for obtaining spectral images from polarized light comprising a polarization sensitive filter; the polarization sensitive filter being configured to receive light at at least one predetermined polarization orientation; and an achromatic waveplate operatively associated with the polarization sensitive filter; the achromatic waveplate being rotatable; whereby rotation of the achromatic waveplate enables light to enter the polarization sensitive spectral filter at at least two predetermined polarization orientations. A method comprising providing a polarization sensitive filter; the polarization sensitive filter being configured to receive light at at least one predetermined polarization orientation; providing an achromatic waveplate operatively associated with the polarization sensitive filter; the achromatic waveplate being rotatable; whereby rotation of the achromatic waveplate enables light to enter the polarization sensitive spectral filter at the at least two predetermined polarization orientations.

主权项

1. A system for obtaining spectral images from polarized light comprising:
at least one achromatic waveplate; the achromatic waveplate being rotatable to allow entry of light having at least two polarization orientations; a polarization sensitive filter that changes orientation of polarization of the incident light; the polarization sensitive filter being operatively associated with the at least one achromatic waveplate and configured to receive light at at least one predetermined polarization orientation and transform it to a second polarization orientation; whereby rotation of the achromatic waveplate enables light to enter the polarization sensitive filter at the at least two predetermined polarization orientations and light is passed through the polarization sensitive filter in order to obtain linear polarization signatures from ambient light to detect surfaces of objects.