Photographic filter holder with threaded adapter
US4302078A · kind A · utility
17Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1979 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | Oct 18, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A filter holder having a plurality of slots therein for receiving filters, photographic effect sheets, or the like, and an adapter which is removably retained in one of said slots for threadably engaging a threaded front portion of a photographic lens. A lens cover element is provided which snapingly engages in the filter holder, and a rotatable filter is engaged in the filter holder and retained by the adapter, the filter being rotatable even in its engaged condition. A lens shade is provided which snapingly and removably engages the filter holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.