Patent ID: 9341881
Filing Date: 2016-05-17
CPC Classification: G02B,G02F,G03B,H04N

Claim Text:
1. A device for polarizing electromagnetic radiation, comprising: a diffuser arranged in a beam path of the electromagnetic radiation; and a polarizer arranged in the beam path of the electromagnetic radiation and downstream of the diffuser in the direction of propagation of the electromagnetic radiation, the polarizer having a reflective side facing the diffuser, said reflective side being at least partly reflective to the electromagnetic radiation, wherein the polarizer is configured to transmit electromagnetic radiation having a predefined polarization and to reflect electromagnetic radiation not having the predefined polarization back to the diffuser, and wherein the diffuser is configured to scatter, within the diffuser, at least one portion of the reflected-back electromagnetic radiation not having the predefined polarization so that the at least one portion of the electromagnetic radiation becomes electromagnetic radiation having the predefined polarization, the scattered electromagnetic radiation having the predefined polarization emerging from the diffuser in the direction of the polarizer.