Adjustable lens mounting assembly
US7978425B2 · kind B2 · utility
1Cited by
0References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2008 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Sep 21, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/407
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens barrel is mated with a lens mount through use of a screw thread whereby relative rotation adjusts lens focus. The lens barrel and lens mount are additionally provided with an interengaging formation that is interposed between an optical axis of the lens barrel and the screw thread. This formation provides a cylindrical sliding contact which isolates any particles produced by operation of the screw thread from reaching the optical components at or near the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.