| 摘要 |
A lens arrangement has a corrective or prescription lens. The prescription lens is adjacent to a fluid cell. The fluid cell has a flexible membrane and a base. Fluid is pumped into or out of the fluid cell in order to vary the corrective power of the entire lens arrangement. The prescription lens is coupled to the base so as to pivotally couple an edge portion of the flexible membrane therebetween and to allow the edge portion to flex with minimum distortion. The prescription lens, which may have a cylindrical surface, is rotatably coupled to the base to allow the cylinder axis to be adjusted to a proper position. The prescription lens is removably coupled to the base to allow the lens to be exchanged for a lens with a different corrective power.
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