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Patent Searching and Data


Title:
SOUND METER
Document Type and Number:
WIPO Patent Application WO/2022/163309
Kind Code:
A1
Abstract:
A sound meter (100) comprises: a light source (111) that emits laser light; a frame unit (120) that surrounds a predetermined space, through which sound passes, so as to intersect a travelling direction of the sound, the frame unit (120) having at least one reflection surface (1211a, 1211b) facing the predetermined space; and a light receiving unit (115) that receives laser light obtained through multiple reflections by the at least one reflection surface (1211a, 1211b). The at least one reflection surface (1211a, 1211b) is arranged so as to cause intersections and multiple reflections of the laser light in the predetermined space as viewed from the traveling direction of the sound.

Inventors:
TANIGAWA, Risako (JP)
MATSUMURA, Toshiyuki
TERASHIMA, Yuki
Application Number:
PCT/JP2022/000020
Publication Date:
August 04, 2022
Filing Date:
January 04, 2022
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (US)
International Classes:
G01H3/00; G01H9/00; H04R23/00; G10K15/00
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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