Lens group positioning method and image capturing apparatus
US8014088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2009 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Nov 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Described is an image capturing apparatus, which makes it possible to accurately secure the distance between the two lens groups, even if the interval distance between the two lens groups varies from the default design-distance value. The image capturing apparatus includes a first lens group, a second lens group, a first driving section to drive the first lens group, a second driving section to drive the second lens group, a first detecting section to detect a first reference position for moving the first lens group, and a second detecting section to detect a second reference position for moving the second lens group. A control section controls either the first driving section or the second driving section so as to move a corresponding one of the first lens group and the second lens group between the first detecting section and the second detecting section at a predetermined timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.