Methods for coating lenses

1. A method comprising:

providing a lens having a curved surface and a lens axis;

rotating the lens about the lens axis and flowing a polarizing liquid over at least a first portion of the curved surface;

after rotating the lens about the lens axis, rotating the lens about a rotation axis such that the polarizing liquid flows over at least a second portion of the curved surface;

where the rotation axis is offset from the lens axis.

2. The method of claim 1 , where the first and second portions include the same portion.

3. A method comprising:

providing a lens having a curved surface, a lens axis, and a radius; and

rotating the lens about a rotation axis such that a polarizing liquid flows over at least a portion of the curved surface;

the rotation axis being offset from the lens axis by a distance that is equal to or greater than the radius of the lens.

4. The method of claim 3 , where the lens has a diameter, and the rotation axis is offset from the lens axis by a distance that is equal to or greater than the diameter of the lens.

5. The method of claim 3 , where the distance is equal to or greater than 1.5 times the radius of the lens.

6. A method comprising:

providing a lens having a curved surface and an axis;

rotating the lens about the lens axis and flowing a polarizing liquid over at least a first portion of the curved surface; and

rotating the lens about a rotation axis such that the polarizing liquid undergoes shear flow and coats at least a second portion of the curved surface.

7. The method of claim 6 , where the first and second portions include the same portion.

8. A method comprising:

providing a lens having a curved surface, a lens axis, and a radius; and

placing the lens in a notch positioned in a plate having a rotation axis offset from the lens axis by a distance that is equal to or greater than the radius of the lens;

after the placing, rotating a polarizing liquid such that the polarizing liquid undergoes shear flow and coats at least a portion of the curved surface, a polarized coating forming after the rotating; and

adjusting a dye in the polarizing liquid to customize a color of the polarized coating.

9. The method of claim 8 , where the lens has a diameter, and the rotation axis is offset from the lens axis by a distance that is equal to or greater than the diameter of the lens.

10. The method of claim 8 , where the distance is equal to or greater than 1.5 times the radius of the lens.

11. A method comprising:

providing a plate having a substantially-centered rotation axis and a notch;

orienting a lens in the notch, the lens having a surface and a lens axis that is not aligned with the rotation axis;

placing a polarizing liquid on the plate;

rotating the lens about the lens axis such that the polarizing liciuid flows over at least a first portion of the curved surface;

rotating the plate about a rotation axis such that the polarizing liquid covers at least a second portion of the curved surface; and

curing the polarizing liquid to form a polarized coating on the portion, the polarized coating having a contrast ratio of at least 8.

12. The method of claim 11 , where the first and second portions include the same portion.

13. The method of claim 12 , where the lens has a radius, and the rotation axis is offset from the lens axis by a distance that is equal to or greater than the radius of the lens.

14. The method of claim 13 , where the lens has a diameter, and the rotation axis is offset from the lens axis by a distance that is equal to or greater than the diameter of the lens.

15. The method of claim 13 , where the distance is equal to or greater than 1.5 times the radius of the lens.