Lens device, imaging device using the same and cell-phone with camera using the same
US7203011B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 21, 2005 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Sep 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/64
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging device comprises a first lens unit and a second lens unit. A first fixed barrel of the first lens unit movably holds a first lens frame, which holds a first lens group, in an optical-axis direction. A second fixed barrel of the second lens unit movably holds a second lens frame, which holds a second lens group, in the optical-axis direction. The first and second fixed barrels are secured in series in the optical-axis direction. The first and second lens units are adapted to be easily assembled in series in the optical-axis direction. Misalignment of the plural lens groups is prevented, and the first and second lens groups are accurately and individually moved in the optical-axis direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.