Electronic endoscope with power scaling function
US6758807B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Jan 3, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/05
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electronic endoscope equipped with an electronic zoom IC circuit that optically scales an object under observation using power scaling lenses and performs electronic power scaling processing on an image obtained by a CCD, wherein the electronic endoscope sets a predetermined depth of field by driving the power scaling lenses with the image optically magnified based on an operation of a variable depth switch and maintains the magnification immediately before this switch operation through electronic power scaling processing. This makes it possible to change a depth of field and observe an image magnified under an equal magnification focused in the depth direction on the monitor. The electronic endoscope can also form a plurality of still images of different depths of field based on an operation of the freeze switch and record optimal still images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.