Method and system for fiber scanning projector
A fiber scanning projector includes a piezoelectric element and a scanning fiber passing through and mechanically coupled to the piezoelectric element. The scanning fiber emits light propagating along an optical path. The fiber scanning projector also includes a first polarization sensitive reflector disposed along and perpendicular to the optical path. The first polarization sensitive reflector includes an aperture and the scanning fiber passes through the aperture. The fiber scanning projector also includes a second polarization sensitive reflector disposed along and perpendicular to the optical path.
1 . A fiber scanning projector comprising:
a piezoelectric element;
a scanning fiber passing through and mechanically coupled to the piezoelectric element, wherein the scanning fiber is configured to emit light propagating along an optical path;
a first polarization sensitive reflector disposed along and perpendicular to the optical path, wherein the first polarization sensitive reflector includes an aperture and the scanning fiber passes through the aperture; and
a second polarization sensitive reflector disposed along and perpendicular to the optical path.
2 . The fiber scanning projector of claim 1 wherein the first polarization sensitive reflector is curved and the second polarization sensitive reflector is planar.
3 . The fiber scanning projector of claim 1 wherein the first polarization sensitive reflector is planar and the second polarization sensitive reflector is curved.
4 . The fiber scanning projector of claim 1 further comprising a quarter wave plate disposed between the first polarization sensitive reflector and the second polarization sensitive reflector.
5 . The fiber scanning projector of claim 4 wherein the first polarization sensitive reflector, the quarter wave plate, and the second polarization sensitive reflector are contained in a solid laminated component having optical power.
6 . The fiber scanning projector of claim 4 wherein the quarter wave plate is integrated with the second polarization sensitive reflector.
7 . The fiber scanning projector of claim 1 further comprising a lens disposed along the optical path and configured to adjust a working distance of the fiber scanning projector.
8 . The fiber scanning projector of claim 7 wherein the second polarization sensitive reflector and the lens are separated by the working distance.
9 . The fiber scanning projector of claim 7 further comprising a field of view magnifier disposed between the second polarization sensitive reflector and the lens.
10 . The fiber scanning projector of claim 7 further comprising a spherical aberration corrector disposed between the second polarization sensitive reflector and the lens.
11 . A method of generating light using a fiber scanning projector, the method comprising:
generating light using a scanning fiber mechanically coupled to a piezoelectric element and passing through an aperture in a first polarization sensitive reflector;
directing the light to propagate along an optical path;
reflecting, during a first pass, the light off of a second polarization sensitive reflector disposed along the optical path;
reflecting the light off of the first polarization sensitive reflector; and
passing, during a second pass, the light through the second polarization sensitive reflector.
12 . The method of claim 11 wherein the first polarization sensitive reflector is curved and the second polarization sensitive reflector is planar.
13 . The method of claim 11 wherein the first polarization sensitive reflector is planar and the second polarization sensitive reflector is curved.
14 . The method of claim 11 further comprising passing the light through a lens disposed along the optical path at a distance from the second polarization sensitive reflector.
15 . The method of claim 14 further comprising passing the light through a field of view magnifier disposed along the optical path between the lens and the second polarization sensitive reflector.
16 . The method of claim 14 further comprising passing the light through a spherical aberration corrector disposed along the optical path between the lens and the second polarization sensitive reflector.
17 . The method of claim 11 wherein a quarter wave plate is integrated with the first polarization sensitive reflector and disposed between the first polarization sensitive reflector and the second polarization sensitive reflector.
18 . The method of claim 17 wherein the first polarization sensitive reflector, the quarter wave plate, and the second polarization sensitive reflector are contained in a solid laminated component.
19 . The method of claim 18 wherein the solid laminated component has an optical power.
20 . The method of claim 11 wherein a quarter wave plate is integrated with the second polarization sensitive reflector and disposed between the first polarization sensitive reflector and the second polarization sensitive reflector.