Motion compensated multi-wavelength digital holography
US9581967B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2015 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Aug 20, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2222/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holography imaging system includes a first laser, a second laser, a transmitter optical system, a receiver optical system, and a detector array. The first laser has a constant frequency, and the second laser has a non-constant frequency. The transmitter optical system can illuminate a target simultaneously using portions of the first and second laser signals. The receiver optical system can focus a returned light onto the detector array. A first and second illumination point sources can direct portions of the first and second laser signals onto the detector array. The first and second illumination point sources are located in-plane with a pupil of the receiver optical system. The system can detect simultaneously holograms formed on the detector array based on the returned light and the portions of the first and second laser signals directed by the first and second illumination point sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.