Patent ID: 9671287
Date: 2017-06-06
CPC Classifications: G01J

Claim:
1. A method of performing hyperspectral imaging, the method comprising the steps of: a) receiving polarised radiation at a first Wollaston prism located at a first position; b) separating the polarised radiation into two orthogonally polarised components using the first Wollaston prism; c) directing the two orthogonally polarised components to a second position using relay optics, the first Wollaston prism located at the first position being imaged at the second position; d) recombining the two orthogonally polarised components into recombined polarised radiation at the second position; e) projecting the recombined polarised radiation into a single polarisation state using at least one polariser; and f) modulating the recombined polarised radiation to interfere in the imaging plane; wherein step f) comprises translating the first Wollaston prism in a direction parallel to its virtual split plane to modulate the recombined polarised radiation.