Miniaturized focusing optical head in particular for endoscope

Details Miniaturized focusing optical head in particular for endoscope Miniaturized focusing optical head in particular for endoscope

2007-05-22

2007-05-22

Bovernick, Rodney (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S117000, C385S119000, C359S800000

Reexamination Certificate

active

10499987

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.

REFERENCES:
patent: 5191879 (1993-03-01), Krauter
patent: 5961445 (1999-10-01), Chikama
patent: 5974211 (1999-10-01), Slater
patent: 6470124 (2002-10-01), Le Gargasson et al.
patent: 0 821 907 (1998-02-01), None
patent: 0 887 043 (1998-12-01), None
patent: 1 157 655 (2001-11-01), None
patent: WO 99/47041 (1999-09-01), None
patent: WO 00/16151 (2000-03-01), None

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