In a polarimeter for analyzing a state of polarization of a light beam incident thereon, the polarimeter including first and second variable retarders configured to exhibit first and second retardance values, respectively, variable over an overall retardance range, and a detector arrangement, a method...http://www.google.com/patents/US6744509?utm_source=gb-gplus-sharePatent US6744509 - Retardance sweep polarimeter and method
