초록 ▼

A hydrophone is provided having at least one flexible piezoelectric sensitive element applied to a support, each sensitive element being formed of a flexible piezoelectric film associated with two electrodes and is applied to a synthetic plastic material support one face at least of which has hollow

A hydrophone is provided having at least one flexible piezoelectric sensitive element applied to a support, each sensitive element being formed of a flexible piezoelectric film associated with two electrodes and is applied to a synthetic plastic material support one face at least of which has hollow parts of very different shapes, for example an homogeneous distribution of cups, honeycombs, holes, etc, whose dimensions are determined as a function of the mechanical characteristics of the films used. The stresses applied thereto result in deforming each film inwardly of the hollow parts, which very greatly increases the sensitivity.

대표청구항 ▼

A piezoelectric hydrophone including at least one sensitive element formed of a film made from a synthetic plastic material associated on each of its faces with a uniform conducting film forming an electrode, which hydrophone further includes a locally rigid support made from a dielectric material b

A piezoelectric hydrophone including at least one sensitive element formed of a film made from a synthetic plastic material associated on each of its faces with a uniform conducting film forming an electrode, which hydrophone further includes a locally rigid support made from a dielectric material being would in a spiral with jointing turns, one surface at least of which is provided with a distribution of well localized cavities, the sensitive element being disposed against said surface.