Miniaturized focusing optical head in particular for endoscope
US7221824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | May 16, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/146
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An optical head for equipping the distal end of a flexible optical fiber bundle, designed to be urged into contact with an analyzing surface and including optical elements for focusing an excitation signal into a so-called excitation focal point located at a specific depth beneath the analyzing surface and for sampling a signal backscattered by the excitation focal point which is carried back by the fiber bundle. The head includes an optics-holder tube wherein are inserted on one side the distal end portion of the fiber bundle and on the other optical elements, the latter including a plate placed in contact with the end of the fiber bundle whereof the index is close to that of the fiber core and a focusing optical block, an output window being further provided adapted to provide index adaptation so as to eliminate parasitic reflection occurring on the analyzing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.