Patent ID: 7372568
Filing Date: 2008-05-13
Classification: G01J

Abstract:
1. A device for measuring optical polarization of light, comprising: a substrate that transmits light; a plurality of polarization elements located on the substrate, the polarization elements configured at different polarization states and spatially separated from one another to receive different portions of a common input optical beam to produce transmitted light beams in different polarization states; and an optical detector comprising a plurality of active detector sensing areas, each of which corresponds to a respective polarization element and receives a transmitted light beam from the respective polarization element, wherein the substrate is a wedged substrate having a first side on which the plurality of polarization elements are placed and a second, opposite side having a plurality of angled surfaces to cause the transmitted light beams to propagate at different directions, the device further comprising: a lens between the polarization elements and the optical detector to focus the transmitted light beams onto the active detector sensing areas, respectively.