Faraday rotator ball lens
US12422701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Feb 16, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2003/0093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Embodiments here describe a Faraday rotator ball lens that can be used in an optical device to focus received light and prevent back reflections from reaching a light source. In one embodiment, the isolator ball lens includes an optic axis that should be aligned with the direction of the received light in order to rotate the light so that back reflections cannot reach the light source. To do so, the isolator ball lens is placed on a holder which is then vibrated, shaken, or an aerodynamic levitation is applied in the presence of a magnetic field. The magnetic field is aligned with a desired direction of the optic axis of the isolator ball lens as the ball lens. As a result, when the ball lens is moved, the magnetic field rotates the ball lens and aligns its optic axis in the desired direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.