CPC H04N 9/3152 (2013.01) [G02B 27/0172 (2013.01); H04N 9/3161 (2013.01); G02B 27/28 (2013.01)] | 20 Claims |
1. A system, comprising:
a projector operable to produce a light beam propagating along an optical path; and
a set of optical elements disposed along the optical path, wherein the set of optical elements includes:
a polarization rotator operable to produce a right-hand circularly polarized beam in a first state and a left-hand circularly polarized beam in a second state;
a first diffractive element operable to receive the right-hand circularly polarized beam and the left-hand circularly polarized beam and generate:
a first circularly polarized beam propagating at a first angle with respect to the optical path in the first state; and
a second circularly polarized beam propagating at a second angle with respect to the optical path and equal and opposite to the first angle; and
a second diffractive element positioned a first distance from the first diffractive element and operable to:
convert the first circularly polarized beam into a first circularly polarized output beam; and
convert the second circularly polarized beam into a second circularly polarized output beam, wherein the first circularly polarized output beam and the second circularly polarized output beam are separated by a second distance.
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