| 摘要 |
<p>An article of eyewear comprising: a support member; an optical element which is moveable relative to the support member between a first position in which the optical element is available for use and a second position in which the optical element is not available for use; and a mechanism capable of moving the optical element between the first and second positions, wherein the mechanism is adapted to be actuated by movement of a facial muscle of a person wearing the article.</p> |
