Imaging-based transmitter for free-space optical communications
US11668893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2019 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Jun 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging transmitter (Tx) for free-space optical communications (FOC) includes a light source for providing modulated light, a pixel controller configured for dynamic selection of at least a portion of the modulated light to provide at least one pre-collimated FOC beam. An imaging lens assembly is for collimating the pre-collimated FOC beam to provide a transmitted FOC beam. The pixel controller controls a location of the pre-collimated FOC beam with respect to a focal surface of the imaging lens assembly so that the transmitted FOC beam is projected into a desired direction in object space that is determined by the location, or in the case that the light source is an emitting array, equivalently the transmitted FOC beam is projected into a unique angular volume described by the center line-of-sight (LOS) and instantaneous FOV (iFOV) of the emitting pixel(s) in the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.