Sheil Conor J, Wartak Andreas, Spicer Graham L C, Tearney Guillermo J
J Opt Soc Am A Opt Image Sci Vis. 2022 Apr 1;39(4):711-725. doi: 10.1364/JOSAA.448848.
The mirror tunnel is a component used to extend the depth of focus for compact imaging probes used in endoscopic optical coherence tomography (OCT). A fast and accurate method for mirror tunnel probe simulation, characterization, and optimization is needed, with the aim of reconciling wave- and ray-optics simulation methods and providing a thorough description of the physical operating principle of the mirror tunnel. BeamLab software, employing the beam propagation method, was used to explore the parameter space and quantify lateral resolution and depth of focus extension. The lateral resolution performance was found to depend heavily on the metric chosen, implying that care should be taken in the interpretation of optimization and simulation results. Interpreting the mirror tunnel exit face as an extended object gives an understanding of the probe operation, decoupling it from the focusing optics and potentially helping to reduce the parameter space for future optimization.
镜筒是一种用于扩展内窥镜光学相干断层扫描（OCT）中紧凑型成像探头焦深的部件。需要一种快速准确的镜筒探头模拟、表征和优化方法，目的是协调波动光学和光线光学模拟方法，并全面描述镜筒的物理工作原理。采用光束传播方法的BeamLab软件用于探索参数空间并量化横向分辨率和焦深扩展。发现横向分辨率性能在很大程度上取决于所选择的度量标准，这意味着在解释优化和模拟结果时应谨慎。将镜筒出射面解释为扩展物体有助于理解探头的操作，将其与聚焦光学系统解耦，并可能有助于减少未来优化的参数空间。
