Frequency-domain optical coherence tomography with extended field-of-view and reduction of aliasing artifacts
US12169124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2023 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | May 15, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0084
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure provides an OCT imaging system to reduce or eliminate frequency-domain aliasing artifacts. The frequency is shifted using a carrier frequency to define a sampling range substantially centered on the carrier frequency. An image of the sample is generated from a displayed imaging range that consists of a subset of the frequencies within the sampling range. Furthermore, the system may be configured to determine the carrier frequency such that a Nyquist frequency corresponding to the shifted frequency is extended beyond either an upper or a lower bound of an OCT quality envelope corresponding to the first portion of light. Additionally, the carrier frequency may be determined such that a lower bound of the OCT quality envelope is greater or less than a zero-frequency DC limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.