Patent · US Active

Optical microphone and method using the same

US9628921B2 · kind B2 · utility

0Cited by

9References

17Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Holger Kropp · Großburgwedel, DE
Jens Spille · Laatzen, DE
Malte Borsum · Hannover, DE

Key dates

Filing date	Jun 15, 2015
Grant date	Apr 18, 2017
Priority date	—
Expiry date	Jun 15, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2307/029
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An optical microphone comprises a light source configured to emit a light beam and an acoustic sensor configured to reflect the light beam. The acoustic sensor includes single-wall nanotubes and deflects in response to pressure waves. An optional reflector of the optical microphone is configured to re-reflect the light beam from the acoustic sensor. A detector is configured to detect the light beam from the acoustic sensor or the reflector, and thus measures the pressure waves.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.