An optometric device includes a semi-rimless plastic two lens frame having two rim surfaces for mounting two lenses in the frame, each having a circumferential groove therearound. The lenses are mounted by the use of a rib projecting from the rim surfaces and integral therewith and configured to engage with a portion of the lens groove to axially fix the lens and by a line and winder which releasably engages the remaining portion of the groove of the lens to radially fix the lens.
申请公布号
US4380379(A)
申请公布日期
1983.04.19
申请号
US19800181452
申请日期
1980.08.25
申请人
FAIRFIELD OPTICAL COMPANY, INC.
发明人
AHERN, JOHN;FARMER, WAYNE;HAWES, DAVID;MCEVOY, JR., HERBERT J.