The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2025
Filed:
Dec. 26, 2022
Aac Technologies Pte. Ltd., Singapore, SG;
Taimoor Ali, London, GB;
AAC Technologies Pte. Ltd., Singapore, SG;
Abstract
A MEMS optical microphone includes: a housing including an inner cavity and a sound port communicating the inner cavity with outside, a light source configured to emitting a light beam, a MEMS module including a membrane suspended above the sound port, and a first reflective coating coated on a surface of the membrane facing the light source and configured to reflect the light beam; a light detection unit configured to detecting light reflecting from the first reflective coating, including a photo detector configured to convert light intensity into photo current, and an optical filter with a variable transmittance hoisted above the photo detector. The MEMS optical microphone has wider dynamic range and higher sensitivity.