Adjustable depth of field optical coherence tomography
US10704889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2018 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Jul 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/047
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for surface inspection of an object using optical coherence tomography (OCT) is provided. The method includes determining a first working distance; determining a first depth of field, based on the first working distance; changing the depth of field to the first depth of field; performing an A-scan of the object; moving the object; determining a subsequent working distance; determining whether the object is in focus at the subsequent working distance, if the object is not in focus: determining a subsequent depth of field based on the subsequent working distance; changing the depth of field to the first depth of field; and performing an A-scan of the object; and otherwise, performing an A-scan of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.