Patent ID: 8111458
Filing Date: 2012-02-07
Classification: G02B

Abstract:
1. An optical device comprising: a plurality of first phasors having substantially the same phase delaying axis as each other; and a plurality of second phasors having substantially the same phase delaying axis as each other in a direction different from that of the first phasors and providing a phase difference substantially the same as that provided by the first phasors, wherein the plurality of first phasors and the plurality of second phasors are arranged on substantially the same face, a density of the first phasors is substantially the same as a density of the second phasors, and a spatial distribution of the density of the first phasors and a spatial distribution of the density of the second phasors are substantially uniform, and wherein the first phasors and the second phasors are ½ wavelength plates, further comprising: a plurality of third phasors having substantially the same phase delaying axis as each other and providing a phase difference different from those provided by the first phasors and the second phasors; and a plurality of fourth phasors having substantially the same phase delaying axis as each other in a direction different from that of the third phasors and providing a phase difference substantially the same as that provided by the third phasors, wherein a density of the third phasors is substantially the same as a density of the fourth phasors, a spatial distribution of the density of the third phasors and a spatial distribution of the density of the fourth phasors are substantially uniform, and a first phasor array, including a plurality of first/second phasors, in which the plurality of first phasors and the plurality of second phasors are arranged and a second phasor array, including a plurality of third/fourth phasors, in which the plurality of third phasors and the plurality of fourth phasors are arranged are disposed along a propagation direction of incident light; and wherein the third phasors and the fourth phasors are ¼ wavelength plates.