Patent ID: 6693497
Filing Date: 2004-02-17
Classification: H01P

Abstract:
A device for converting circularly polarized electromagnetic radiation into linearly polarized electromagnetic radiation, comprising:a polarization mode converter having at least one slit with a slit orientation rotatable between a first output direction and a second output direction; and a depolarizer having depolarizing elements defining a depolarization position and rotatably supported in the polarization mode converter for rotation between the first output direction and the second output direction; wherein for the incident circularly polarized radiation, the depolarization position is intermediate between the first output direction and the second output direction, in which depolarization position incident left-handed circularly polarized radiation is supplied to one of the first output direction and the second output direction, and incident right-handed circularly polarized radiation is supplied to the other of the second output direction and the first output direction.