Patent ID: 8564885

Claim:
A lens device comprising: a substrate having a channel and a first fluid path and a second fluid path, the first and second fluid paths at least partially in communication with the channel; a light emitting device positioned adjacent to the channel; at least one first fluid source in communication with the first fluid path such that a first fluid moves along the first fluid path at a first flow rate along the first fluid path; at least one second fluid source in communication with the second fluid path such that a second fluid moves along the second fluid path at a second flow rate along the second fluid path; and the first fluid path and the second fluid path configured such that the first fluid and the second fluid move through the channel at the first and second flow rates to define an adjustable liquid gradient refractive index distribution in the channel, adjustment of the liquid gradient refractive index being effected by adjusting at least one of the first flow rate and the second flow rate, the adjustment of the liquid gradient refractive index distribution causing at least one of an angular adjustment of light emitted by the light emitting device and an adjustment of a focal distance of the light emitted by the light emitting device.