Photographing apparatus and focus position determining method
US8743184B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2009 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Aug 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A photographing apparatus is provided that accurately determines focus positions of two photographing sections in the same degree of time as in the past and a focus position determining method. A search range setting section 121 calculates one boundary value Pn′ of a second search area and calculates the other boundary value Pf′ of the second search area on the basis of a focus position P1 of a first focus lens FLA detected by an AF detecting section 120 and a boundary value N of a search area on a near side and a boundary value F of a search area on a far side. The AF detecting section 120 searches for a focus position P2 while instructing a second F lens driving section 104B to move a second focus lens FLB in a second search area (Pn′ to Pf′) narrower than a first search area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.