Imaging system and method using a projected reference to guide adjustment of a correction optic
US11194146B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2019 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Jun 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
System and method using a projected reference to guide adjustment of a correction optic. In an exemplary method, a reference may be projected onto an imaging detector by propagation of light generally along an optical axis that extends from the reference, through an objective, to a surface of a sample holder, and from the surface, back through the objective, to the imaging detector. The light may propagate through an off-axis aperture located upstream of the imaging detector and spaced from the optical axis. A plurality of images of the reference may be captured using the imaging detector, and with a correction optic at two or more different settings. A setting for the correction optic may be selected based on the plurality of images, and a sample may be imaged while the correction optic has the selected setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.