| 摘要 |
The device comprises a film (2) composed of piezoelectric material having electrodes on its flat sides. According to the invention, the film (2) has, at least on one of its flat sides, electrically conducting regions which act as electrodes (8 to 14, 38 to 42), said electrically conducting regions each being at least partially coated with an elastomer (48 to 59). Formed in each case between adjacent elastomers of the same flat side is a cavity (26 to 31, 44 to 47). In this device, the piezoelectro effect is intensified and the pyroelectric effect is reduced at the same time. <IMAGE>
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