Liquid Crystal Half-Wave Plate Lens

摘要

A lens includes immobilized liquid crystals. The liquid crystals in a first region are aligned in a first orientation. The liquid crystals in a second region, located between the first region and a third region and adjacent to the first region and the third region, are aligned in a second orientation that is distinct from the first orientation. The liquid crystals in the third region, located between the second region and a fourth region and adjacent to the second region and the fourth region, are aligned in the first orientation. The liquid crystals in the fourth region, located adjacent to the third region, are aligned in the second orientation. A method for making the lens is also disclosed.

主权项

1. A method for making a lens, comprising:
applying a respective pattern of an electric field on a liquid containing liquid crystals so that the liquid crystals are aligned to focus at least a portion of impinging light, wherein:
the liquid containing liquid crystals is located between two substrates;each substrate of the two substrates includes a plurality of electrodes; andthe liquid crystals in a first region are aligned in a first orientation;the liquid crystals in a second region, located between the first region and a third region and adjacent to the first region and the third region, are aligned in a second orientation that is distinct from the first orientation;the liquid crystals in the third region, located between the second region and a fourth region and adjacent to the second region and the fourth region, are aligned in the first orientation; andthe liquid crystals in the fourth region, located adjacent to the third region, are aligned in the second orientation.