OCT system with phase sensitive interference signal sampling
US8836953B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Nov 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B9/02091
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An OCT system and particularly its clock system generates a k-clock signal but also generates an optical frequency reference sweep signal that, for example, indicates the start of the sweep or an absolute frequency reference associated with the sweep at least for the purposes of sampling of the interference signal and/or processing of that interference signal into the OCT images. This optical frequency reference sweep signal is generated at exactly the same frequency of the swept optical signal from sweep to sweep of that signal. This ensures that the sampling of the interference signal occurs at the same frequencies, sweep to sweep. Such a system is relevant to a number of applications in which it is important that successive sweeps of the swept optical signal be very stable with respect to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.