Endoscope tube with image inversion system
US8043210B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jul 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2446
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope tube having at least one image inversion system consisting of two rod lenses, in which the first rod ends, pointing to an intermediate image plane, have a marginal cylinder, which is mounted in the endoscope tube, in which the second rod ends, which lie symmetrical to an aperture plane, have a diameter that is smaller than the inner diameter of the endoscope tube, so that the end surfaces associated with the first rod lenses are convex in configuration, the end surfaces associated with the second rod ends can be cemented together with a lens element, and a distance holder that defines the aperture area is inserted between the two rod lenses, is characterized in that the rod diameter in each case continually decreases from the marginal cylinder toward the second rod end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.