Variable power spectacles

Abstract

Variable power spectacles having a pair of visual optical systems. Each of the visual optical systems includes a variable power lens and a variable angle prism. The spectacles is further provided with a first adjusting mechanism for adjusting focal power of the variable power lens, a second adjusting mechanism for adjusting prismatic power of the variable angle prism, and a linking mechanism. The first adjusting mechanism varies the curvature of the front surface of the variable power lens to change the focal power. The second adjusting mechanism varies the inclination angle of the front surface of the variable angle prism to change the prismatic power. The linking mechanism associates the adjustment by the first adjusting mechanism with the adjustment by the second adjusting mechanism to link one of the adjustments with the other adjustment.

Dependencies are inferred from the claim text.