| 摘要 |
An acoustic reflector is disclosed, which is formed from the surface (10) generated by an ellipse (12) rotated about 180 DEG about a line (L) passing through one of the focal points (F1) of the ellipse, where this line (L) of rotation intersects the major axis (A) at an acute angle ( alpha ). A transducer (30) placed at the focal point (F1) on the line (L) of revolution will, when energized, generate waves that will be reflected from the surface (10) back through the arc of second focal points of the generating ellipse.
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