Patent ID: 7221824
Filing Date: 2007-05-22
Classification: A61B

Abstract:
1. Miniaturized optical head provided for equipping the distal end of a flexible optical fibre bundle ( 2 ), said optical head being intended to come into contact with an analyzing surface and comprising optical means ( 3 ) for focussing an excitation signal coming out from said fibre bundle into a so-called excitation focal point situated at a given depth beneath the analyzing surface and for sampling a signal backscattered by the excitation focal point which is carried back by said fibre bundle, characterized by an optics-holder tube ( 4 ) circular in section wherein are inserted on one side the distal end portion ( 1 ) of the fibre bundle ( 2 ) and on the other the optical means, the latter comprising a plate ( 21 ) placed in contact with the end ( 14 ) of the fibre bundle the index of which is close to that of the fibre core and a focussing optical block ( 3 ), an output window ( 30 ) being moreover intended to come into contact with the analyzing surface and adapted to produce an index adaptation in order to eliminate parasitic reflection occurring on the analyzing surface.