Zoom lens system
US4367927A · kind A · utility
15Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1980 |
| Grant date | Jan 11, 1983 |
| Priority date | — |
| Expiry date | Oct 24, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/177
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens system comprising a flare stop and so adapted as to favorably limit rays which will otherwise produce flare without making light intensity insufficient by displacing said flare stop independently of displacements of lens groups for zooming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.