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:
Mar. 23, 2021
Filed:
Jun. 29, 2020
Applicant:
Phix Photonics Assembly, Enschede, NL;
Inventors:
Assignee:
Phix Photonics Assembly, Enschede, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 3/46 (2006.01); G11B 7/002 (2006.01); G11B 17/16 (2006.01); G02B 6/12 (2006.01);
U.S. Cl.
CPC ...
G11B 7/002 (2013.01); G02B 6/12 (2013.01); G11B 17/16 (2013.01); G02B 2006/12138 (2013.01);
Abstract
An optical phonograph cartridge includes an optical vibration sensor that operatively couples to a stylus/cantilever to convert, to optical signals, mechanical vibrations representative of the music encoded in the groove of a vinyl record. The optical vibration sensor includes a photonic integrated circuit includes an input waveguide network for conveying light and an output waveguide network for conveying modulated light, wherein the modulated light is generated by a screen that is attached to the cantilever and is disposed between the input and output waveguide networks.