Electronic endoscope with light-amount adjustment apparatus
US6980227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Jan 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/183
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic endoscope has a video-scope with an image sensor and a video-processor. The video-scope has an objective lens and an illuminating lens in a tip portion. Further, the electronic endoscope has a luminance calculator and a light-amount adjuster. The luminance calculator divides the total area of a subject image into a plurality of division areas, defines weighted areas from the plurality of division areas in accordance with the tip characteristics of the video-scope, and calculates a total luminance value of the subject image by putting priority on predetermined weighted areas relative to the other areas. The light-amount adjuster adjusts the quantity of light illuminating the subject in accordance with the total luminance value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.