Image pickup for endoscope and method for operating image pickup system for endoscope
US9621814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2016 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Mar 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided an image pickup system for endoscope including: a light source; an image forming optical system; a focus lens driving section; an image pickup section outputting an image signal; an image signal amplifying section; an image brightness detecting section; a brightness adjusting section adjusting a brightness control condition such as a light quantity of the light source, an image pickup condition of the image pickup section and an amplification factor of the amplifying section so that brightness of an image becomes a predetermined brightness; an auxiliary AF section estimating a temporary focus position based on the brightness control condition; a control section setting a small scanning range including the temporary focus position; and a contrast AF section causing contrast AF to be performed in the scanning range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.