Patent ID: 6958868

Claim:
An optical concentrator for concentrating light from a moving light source comprising: a) a substantially transparent sheet made from a material having a substantially constant refractive index; b) wherein said substantially transparent sheet has a series of grooves formed in a face, said series of grooves defining a groove array; c) wherein said groove array is filled with a layer of substantially transparent material having an electrically changeable refractive index when an electromagnetic field is applied thereto, said layer of substantially transparent material being defined as an active layer; d) a means for applying an electromagnetic field having a changeable strength to said active layer; e) a means for controlling the strength of said electromagnetic field; f) an optical condenser, positioned in optical communication with said substantially transparent sheet and said active layer; g) wherein light from a light source interacts with said substantially transparent sheet and said active layer and said optical condenser such that said light is concentrated in a localized region of space.