Insonification method for obtaining a predetermined field of ultrasonic waves and production method for making an ultrasonic lens for these purposes

A production method for implementing an ultrasonic lens for purposes of insonification of a medium comprising at least one aberrating barrier and a substantially homogeneous internal part masked by said aberrating barrier, in order to obtain a predetermined objective ultrasonic wave field in at least one predetermined area belonging to said internal part, by having said ultrasonic waves sent by an ultrasound probe placed in a position predetermined relative to said medium on the other side of said aberrating barrier from said internal part,

• the production method comprising at least one lens calculation step during which an ultrasonic lens is calculated, using a model of the medium comprising a mapping of ultrasonic wave propagation properties obtained from actual imaging of the medium, that is suited, when it is interposed between the ultrasound probe and the aberrating barrier, for generating aberrations such that when the ultrasound probe sends a predetermined ultrasonic wave, said predetermined wave generates said predetermined objective ultrasonic wave field in said predetermined area.