Endoscope illumination optical system
US8118734B2 · kind B2 · utility
5Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2007 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Dec 21, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/00096
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope illumination optical system includes a surface light source, a positive first lens element, a positive second lens element, in this order from the surface light source.The endoscope illumination optical system satisfies the following conditions:0.40<f/D<0.53 (1)0.40<0.5·D·θ<0.56 (2)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.