Optometric device
US4380379A · kind A · utility
15Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1980 |
| Grant date | Apr 19, 1983 |
| Priority date | — |
| Expiry date | Aug 25, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C1/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.