Magnification loupe with aspherical lenses
US9910191B2 · kind B2 · utility
2Cited by
29References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2008 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Nov 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/002
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to optical instruments, in particular to magnification loupes, stereo-magnification loupes and magnification viewers, such as those worn by dentists and surgeons. The objective lens of the optical instrument is protected from mechanical and/or chemical damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.