| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination and acoustic integrated device capable of highly accurately controlling the irradiation area of light and directivity of acoustic waves. <P>SOLUTION: The acoustic illuminating device (1) comprises a light source (13), a support means (14) for position-variably supporting the light source, a speaker (12) with a paraboloid for reflecting the light from the light source for generating the acoustic waves and emitting them from the paraboloid, and a control means (10) for controlling the support position of the support means and the directivity of the acoustic waves generated in the speaker. The speaker is an electrostatic speaker provided with an electrode (Ei) and a vibrating membrane (P) constituting the paraboloid. The electrode is constituted of a plurality of concentric inner side electrode units (Eii) electrically insulated from each other, and the vibrating membrane has a curved surface corresponding to the paraboloid. <P>COPYRIGHT: (C)2009,JPO&INPIT |
