| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a spectacle frame enabling a user thereof to view an object always from the front of spectacle lenses without moving eye line vertically each time when viewing a distant object and a near object or without changing the position of the lenses with respect to eyeballs in using bifocals. <P>SOLUTION: Each of the two insertion shafts of a lens frame to which two short-sighted single-focal-length lenses are fixed is inserted into each of the grooves provided on two temples of a support frame, and the insertion shafts of the lens frame are movable in the grooves with respect to the support frame in the front and back direction in a range in which a claw contacts a locking part. A hinge A provided in the lens frame and a hinge B provided in the support frame have a same shape and further are movable to be collinearly positioned, so that the inventive spectacle frame can be folded in the same way as existing spectacle frames. <P>COPYRIGHT: (C)2012,JPO&INPIT |
