Patent ID: 8749886
Filing Date: 2014-06-10
Classification: G02B

Abstract:
1. A process comprising: receiving light through an input face of a polarizing beamsplitter, wherein the light is in a selected waveband and is incident on the input face at a non-zero angle of incidence; splitting the received light into a first beam having substantially a first polarization and a second beam having substantially a second polarization, directing the first beam to a first output face of the polarizing beamsplitter and directing the second beam to a second output face of the polarizing beamsplitter; passing at least one of the first and second beams through an anti-reflective coating positioned on one or both of the first output face and the second output face; and increasing polarization contrast in at least one of the first and second beams by passing one or both of the first and second beams through a linear polarizer positioned on one or both of the first output face and the second output face.