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FREQUENCY-DOMAIN OPTICAL COHERENCE TOMOGRAPHY WITH EXTENDED FIELD-OF-VIEW AND REDUCTION OF ALIASING ARTIFACTS
FREQUENCY-DOMAIN OPTICAL COHERENCE TOMOGRAPHY WITH EXTENDED FIELD-OF-VIEW AND REDUCTION OF ALIASING ARTIFACTS
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机译:扩展视场的频域光学相干断层扫描和减少假像
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摘要
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.
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