Patent ID: 8422132

Claim:
An integrated planar polarizing device, in the order of incidence along an optical path of an incident light beam from back position to front position, comprising a planar array of micro mirrors, a quarter wave retarder film and a reflective polarization plate, wherein the planar array of micro mirrors are regularly spaced-apart in an identical tilted angle α relative to a base plane; the quarter wave retarder film is positioned between the micro mirrors and the reflective polarization plate; the reflective polarization plate is in parallel to the base plane and is adapted to transmit and polarize a first polarized light of the incident light beam in a first polarization state, and to reflect and polarize a second polarized light of the incident light beam in a second polarization; the micro mirrors are adapted to reflect the second polarized light passing and polarized through the quarter wave retarder film a first time to pass and be polarized through the quarter wave retarder film a second time, thereby converting the second polarized light to be a third polarized light in the first polarization state which can transmit through the reflective polarization plate; and the planar array of micro mirrors, the quarter wave retarder film and the reflective polarization plate are embedded in a transparent medium.