Polarization separation in remote imaging systems
US11789149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2020 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Apr 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0136
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods described herein are directed to polarization separation of laser signals and/or incoming light signals associated with an imaging system, such as a Light Detection and Ranging (LIDAR) system. Example embodiments describe a system configured to direct incoming light signals to a polarization separator and capturing the two polarization states of the incoming light signals. In some instances, the laser signal may be converted into two different polarization states. The system may individually process the two polarization states of the incoming light signals along with the corresponding polarization state of the laser reference signal to extract information associated with reflecting objects within the field-of-view of the imaging system. The polarization separator may be a birefringent crystal positioned adjacent to an edge of a photonic integrated circuit (PIC) that is used for processing outgoing and incoming light signals associated with the imaging system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.