Ultrasonic transducer probe

A - Human Necessities – 61 – B

Patent

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Details

A61B 18/26 (2006.01) G10K 15/04 (2006.01)

Patent

CA 2472877

An acoustic generator, comprising: a source of electro-magnetic radiation; a waveguide coupled to said source; and at least one absorbing region defined in said waveguide, said region being selectively absorbing for portions of said radiation meeting at least one certain criterion and having significantly different absorbing characteristics for radiation not meeting said criterion, both of said radiation portions being suitable for conveyance through said waveguide, wherein said absorbing region converts said radiation into an ultrasonic acoustic field. Optionally, said region comprises a volumetric absorber. Alternatively or additionally, said region comprises a plurality of regions.

Cette invention concerne un générateur acoustique comprenant : une source de rayonnement électromagnétique ; un guide d'onde couplé à ladite sonde ;et au moins une zone d'absorption définie dans le guide d'onde. Cette zone absorbe sélectivement des parties dudit rayonnement qui répondent au moins à un certain critère, mais présente des caractéristiques d'absorption sensiblement différentes pour la partie du rayonnement qui ne satisfait pas à ce critère, ces deux parties du rayonnement étant susceptibles d'être transmises par ledit guide d'onde. Cette zone d'absorption convertit ledit rayonnement en un champ acoustique ultrasonique. Ladite zone comprend éventuellement un absorbeur volumétrique. En variante ou en plus, cette zone comprend une pluralité de régions.

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