Patent ID: 7070280
Filing Date: 2006-07-04
Classification: G02B

Abstract:
1. A method for generating light of predetermined polarization from input light of different polarization, comprising the steps of: providing a hollow tubular member having a light input and an optical axis and a light-reflecting inner surface parallel to the optical axis and a light-reflecting further surface along a part of a cross-sectional plane of a hollow space of said tubular member, the further surface being normal to the optical axis, remote from said light input and in said hollow space; conducting said input light into and along said hollow tubular member, for generating output light from said tubular member; and subjecting said output light from said tubular member to polarization-selective splitting, for generating output light of said splitting of said predetermined polarization and generating reflected light of said splitting and of different polarization that is reflected back into said tubular member and onto said light-reflecting inner and further surfaces.