| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a glare-preventive shading lens to be firmly fixed on a correction lens so as not to be detached in outdoor activities or sports as well in which a highly-curved frame with highly-curved lenses attached is frequently used. <P>SOLUTION: Overlap lens spectacles include: a main lens (10) processed such that a step-like protrusion (16) is provided on the peripheral edge in the outer surface side of a lens over the whole circumference thereof, and the peripheral edge in the inner surface side of the lens is formed to be a stepped-down shape (19) over the whole circumference thereof; and a sub-lens (30) having a rear face with the same curvature as the outer surface of the main lens and with a congruent shape so as to be brought into close contact with the whole outer surface of the main lens. With both of them overlapped, the step-like protrusion part of the main lens and the peripheral part of the sub-lens as overlapped each other are, in the state of being both brought into close contact, inserted and fit into a recessed step groove (42) provided on the inner side of a rim (40) of the spectacles, and both the lenses are firmly fixed on a spectacle frame by closing the rim. <P>COPYRIGHT: (C)2012,JPO&INPIT |
