Apparatus for the redistribution of acoustic energy

Details Apparatus for the redistribution of acoustic energy Apparatus for the redistribution of acoustic energy

H - Electricity

05

K

H05K 5/00 (2006.01) G10K 11/28 (2006.01)

Patent

CA 2379138

An apparatus for the redistribution of acoustic energy is provided which comprises a lens having a reflective surface defined by the surface of revolution (R1) of an elliptical arc (A1) rotated about a line (L) through an angle ((X1) and the surface of revolution (R2) of an elliptical arc (A2) rotated about the line (L) through an angle (.alpha.2). Each elliptical arc (A1) and (A2)constitutes a portion of an ellipse (E1) or (E2) having a focal point located at a point (F1) on line (L), and shares an end point (P) which lies on the reflective surface and the line (L). The angle (.alpha.1) is chosen such that the surface of revolution (R1) is convex with respect to an adjoining surface (S1) and the angle (.alpha.2) is chosen such that the surface of revolution (R2) is concave with respect to the adjoining surface (S1).

La présente invention concerne un appareil de redistribution de l'énergie acoustique comprenant un objectif à surface réfléchissante définie par la surface de révolution (R1) d'un arc elliptique (A1) mis en rotation autour d'une ligne (L) dans un angle (.alpha.1), et la surface de révolution (R2) d'un arc elliptique (A2) mis en rotation autour de la ligne (L) dans un angle (.alpha.2). Chaque arc elliptique (A1 et A2) constitue une partie d'une ellipse (E1 ou E2) dont le point focal est situé au niveau d'un point (F1) sur la ligne (L), et partage un point terminal (P) situé sur la surface réfléchissante et la ligne (L). L'angle (.alpha.1) est choisi de manière à ce que la surface de révolution (R1) soit convexe par rapport à une surface voisine (S1), et l'angle (.alpha.2) est choisi de manière à ce que la surface de révolution (R2) soit concave par rapport à la surface voisine (S1).

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