Computational adaptive optics for interferometric synthetic aperture microscopy and other interferometric imaging
US8731272B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2012 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Jan 16, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/0056
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods for correcting for aberrations in the image or three-dimensional reconstruction of a sampled region obtained by broadband interferometry. The sampled region is illuminated with a broadband beam of light, and light returned from the sample is detected, along with a reference beam, in order to derive an interference signal for pixels of a volume spanned by wavenumber and axes transverse to the beam propagation direction. An optimization procedure is performed with respect to a specified criterion so as to obtain an aberration-corrected image of at least one plane of the sampled region, either in a plane-specific manner or in a space-invariant manner throughout the sampled region. A filter function, which may be derived from the interference signal attendant to irradiating a sparsely distributed plurality of point scatterers, or otherwise, corrects for a detected aberrated point spread function. Methods of the present invention may be used for aberration correction in reading information from an optical data storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.