Bartley C. Johnson,Noble G. Larson,Brian Goldberg,Mark E. Kuznetsov
申请号：
US14809747
公开号：
US10393502B2
申请日:
2015.07.27
申请国别(地区):
US
年份:
2019
代理人:
摘要：
Real-time swept source OCT data is most often sampled using a specially cut hardware k-clock. The present invention involves mathematically resampling signals within an FPGA-based data acquisition board based on data sampled from a wide free spectral range reference interferometer. The FPGA can then multiply up the reference clock rate to achieve greater imaging depth. The Nyquist fold-over depth can thus be programmed from a standard reference to an arbitrary depth, much as PLL frequency synthesizer can produce many frequencies from a standard stable reference. The system is also capable of real-time performance.
