Variable density ophthalmic device

Details Variable density ophthalmic device Variable density ophthalmic device

G - Physics

02

C

88/117, 88/39, 8

G02C 7/12 (2006.01) G02C 3/00 (2006.01) G02C 7/10 (2006.01)

Patent

CA 1092397

Abstract of the Disclosure An ophthalmic device comprises a spectacle frame securing in a fixed position a first pair of light polarizing elements. A second pair of light polarizing elements is superposed with respect to the first pair and rotatable with respect to the first pair to provide variable light transmission. A U-shaped resilient member is secured to each of the rotatable elements, the U-shaped member clipping on to a portion of the frame to bias and hold the rotatable elements adjacent the fixed elements. A tie bar joining both U-shaped members may be provided so that the two rotatable elements are rotated an equal amount. The U-shaped members may be engageable with stops on the frame which limit rotation of the rotatable elements.

261338

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