Cam follower for lens barrel and lens barrel
US7839583B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 31, 2008 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Jan 31, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/021
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens barrel has a first group frame, cam followers each having a shaft portion having a straight hollow hole and a slidably contacting portion integral with the shaft portion, which are fixed to the first group frame and a rotating frame having a cam groove with which the cam followers are in slidable contact, which moves relatively to the first group frame. The hollow hole of the cam follower reaches the inside portion of the slidably contacting portion. The shaft portion is press-fit fixed in the shaft hole of the first group frame when an impact force is applied to the lens barrel, the possibility of damaging the frame member is little.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.