Methods and apparatus for acousto-optic non-uniformity correction and counter-countermeasure mechanisms
US10437132B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2018 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | May 18, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/674
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Examples provide a compact, dynamic non-uniformity correction mechanism and counter-countermeasure mechanism. In one example an optical imaging system includes an imaging sensor configured to receive optical radiation and to produce an image of a viewed scene from the optical radiation, an optical train including at least one optical component configured to receive the optical radiation from the viewed scene and to focus the optical radiation to the imaging sensor, and an acousto-optic modulator positioned in the optical train and having an ON state and an OFF state, the acousto-optic modulator being configured in the OFF state to pass the optical radiation, and the acousto-optic modulator being configured in the ON state to diffract the optical radiation and blur the image produced by the imaging sensor from the diffracted optical radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.