Lens barrel
US6707993B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2003 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Mar 3, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact lens housing which is of a multistage type in which it is projected and retracted through three stages. The lens housing includes three pairs, each of which is composed of a straight-moving member which is movable in an axial direction of the lens housing but not rotatable and is composed of a rotation member which can rotate relative to the straight-moving member, in which the rotation member moves integrally together with the straight-moving member in the axial direction. The straight-moving members of the three pairs have straight-moving interlocking parts, respectively, and the straight-moving interlocking parts slidably engage with each other so as to be able to move in the axial direction. The straight-moving interlocking parts are arranged generally in the same circumference when the lens housing is viewed in the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.