Electronic endoscope system having variable power function
US6685631B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/00188
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
To provide an electronic endoscope system provided with an objective optical system for optically magnifying an image to be observed by using a variable power lens and an electronic zoom IC circuit for electronically magnifying an image obtained by a CCD. A depth of field at the time of switching between optical variable power and electronic variable power is set at an arbitrary value by key operation etc. of a control panel of a processor. When the depth of field becomes a setting value, for example, 16 mm (lens position before Near end), during the operation of optical variable power based on the operation of a variable power switch, electronic variable power is executed by the electronic zoom IC circuit. Thereby, an enlarged image in which the depth of a subject to be observed with irregularities is properly in focus can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.