Title:
ACOUSTIC LENS AND SPEAKER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/049136
Kind Code:
A1
Abstract:
An acoustic lens (6) comprises a plurality of fins (18) an end of each of which, when the acoustic lens (6) is viewed from a side, is arranged on a supporting surface (20) extending on the opposite side to a speaker (4), while curving convexly in a predetermined direction, and which are arranged at nearly equal spacings and nearly parallel to each other in a predetermined direction. When the acoustic lens (6) is viewed from the side, each of the plurality of fins (18) has a nearly same length, and the elevation angle (θ1 to θ7) of the supporting surface (20) relative to each of the plurality of fins (18) gradually increases from one side toward the other side in the predetermined direction.
Inventors:
OGURA TAKASHI
Application Number:
PCT/JP2020/025791
Publication Date:
March 18, 2021
Filing Date:
July 01, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H04R1/34
Domestic Patent References:
| WO2018150788A1 | 2018-08-23 |
Foreign References:
| JPS5946086U | 1984-03-27 | |||
| JPS5914484U | 1984-01-28 |
Other References:
See also references of EP 4030781A4
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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