Optical phono cartridge and system
US10957353B1 · kind B1 · utility
0Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2020 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Jun 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12138
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.