Optical-path folding-element with an extended two degree of freedom rotation range
US11359937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2020 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Sep 5, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure is of a sensing mechanism for sensing rotation movement around a rotation axis, including: a magnet; and a magnetic sensor configured to detect a magnetic flux of the magnet and to determine a relative shift between the magnet and the magnetic sensor based on change in the detected magnetic flux, wherein the magnet is shaped such that a cross section of the magnet has a width that increases from a point substantially at a center of the magnet towards each end of the magnet, thereby increasing a range of detectable change in the magnetic flux and increasing a corresponding detectable range of the relative shift between the magnet and the magnetic sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.