Illuminating apparatus of endoscope
US5746494A · kind A · utility
27Cited by
13References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Nov 14, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2469
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illuminating apparatus of an endoscope having a bulb disposed to face an entrance end surface of a light guide for illumination to supply illuminating light to the light guide. A concave mirror surrounds side and rear portions of the bulb to converge light emitted peripherally from the bulb in the vicinity of the entrance end surface of the light guide. A convex lens is formed at the distal end of the bulb to allow light emitted forwardly and obliquely forward from the bulb to be incident on the entrance end surface of the light guide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.