Electronic endoscope
US4987884A · kind A · utility
49Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | May 16, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/05
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electronic endoscope using a solid-state image pickup device has a filter arranged in the foreground of the solid-state image pickup device within the body of the endoscope for removing lights having wavelengths not related to observation in order to effectively eliminate those light components which are not required for the observation from among those lights incident to the solid-state image pickup device. As such a filter, either a lens component constituting the objective lens or an illuminating lens can be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.