Device for lenses of various lengths
US5831778A · kind A · utility
30Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Jun 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for lenses of different lengths enables a user to replace different lenses of different lengths by only removing parts of the device without replacing a whole set of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.