Patent ID: 8668330

Claim:
Eyewear comprising: a frame configured to support at, least one lens in a field of view of a wearer, the frame being configured to be worn on the wearer's head, the frame comprising a latch device; and at least one lens having a first engagement portion being configured to engage with the latch device for preventing the lens from separating from the frame; wherein the latch device comprises: an engagement structure that is movable relative to the lens along a path in a direction toward the first engagement portion of the lens, the engagement structure movable between a disengaged position and an engaged position for engaging with the first engagement portion of the lens to restrain movement of the lens, the engagement structure disposed on a slider arm; and a crank arm that is rotatably coupled relative to the frame and to the slider arm to form a slider-crank assembly, the slider-crank assembly allowing rotation of the crank arm to provide movement of the engagement structure.