Contact endoscopy and micro endoscopy
US4385810A · kind A · utility
26Cited by
8References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1980 |
| Grant date | May 31, 1983 |
| Priority date | — |
| Expiry date | Oct 19, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2453
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An optical system related to optical and rigid endoscopes (8) and allowing, during the same endoscopic examination a switch from low power magnification to high power magnification observation by contact of this surface and vice versa. This optical system is comprised of a lens or a system of lenses to be placed in front of the existing endoscope objective and is further comprised of a lens or a system of lenses to be placed between the ocular of this endoscope and the eye. This invention may be used in medical or industrial endoscopy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.