OPTOACOUSTIC LENS Russian patent published in 2016 - IPC G01N29/00 

FIELD: physics.

SUBSTANCE: invention relates to spectroscopy of condensed media and photoacoustic analysis of materials. Optoacoustic lens has an acoustic line with annular piezoelectric transducer at its one end, acoustic lens at its other end and point-to-point cylindrical channel in the central part and optical fibre placed in the cylindrical channel, as well as an adapter equipped with side nozzle for introduction of an immersion liquid. One end of the adapter is fixed in the channel at the side of the piezoelectric converter, and the second end is equipped with a sealing sleeve for sealing the optical fibre. Channel diameter and inner diameter of the adapter exceed the diameter of the optical fibre at value facilitating passage of an immersion liquid from the nozzle to acoustic lens.

EFFECT: providing an immersion liquid supply directly to the scanning region through the channel in the acoustic line of optoacoustic lens simplified design, possibility to vary the depth of probing and focusing zone of the laser radiation during examination.

4 cl, 4 dwg