| 摘要 |
A variable lens ( 100; 200; 300; 400; 500; 600 ) is described. The lens ( 100; 200; 300; 400; 500; 600 ) comprises a chamber ( 125 ) defined by at least one side wall and having an optical axis ( 90 ) extending longitudinally through the chamber. The chamber ( 125 ) contains a first fluid ( 130 ) and a second fluid ( 140 ) in contact over a meniscus ( 150 ) extending transverse the optical axis ( 90 ). The perimeter of the meniscus ( 150 ) is constrained by the side walls ( 125 ). The fluids ( 130, 140 ) are substantially immiscible, and have different indices of refraction. At least one pump ( 110; 112, 114, 116, 152; 422 ) is arranged to controllably alter the position of the meniscus ( 150 ) along the optical axis ( 90 ) by altering the relative volume of each of the fluids ( 130, 140 ) contained within the chamber ( 125 ). |
