OCT imaging with high lateral resolution using a dynamically focusing multi-lens system

Khaled Aljasem; Andreas Seifert; Hans Zappe

doi:10.1117/12.831829

13 July 2009 OCT imaging with high lateral resolution using a dynamically focusing multi-lens system

Khaled Aljasem, Andreas Seifert, Hans Zappe

Proceedings Volume 7372, Optical Coherence Tomography and Coherence Techniques IV; 73721S (2009) https://doi.org/10.1117/12.831829
Event: European Conferences on Biomedical Optics, 2009, Munich, Germany

Abstract

This article studies the combination of the time-domain OCT modality with a dynamically-focusing micro- lens-system. Combining the tunable lens with a fix-focal lens in the sample arm of the OCT setup shows a considerable improvement on the OCT image quality, mainly, the lateral resolution and the signal-to-noise ratio. We present an experimental method and the related first measurements of the lateral resolution of the OCT system using the tunable lens system. Based on this method, the OCT system employing the tunable multi-lens system provides an invariant lateral resolution of 8 μm along ~5mm scan depth. A miniaturized version of the tunable two-lens system utilizes an endoscopic OCT wit a dynamically-focusing functionality. The high lateral resolution endoscopic imaging based on the miniaturized tunable micro-system promises a significant utility in advanced biomedical imaging.

Citation Download Citation

Khaled Aljasem, Andreas Seifert, and Hans Zappe "OCT imaging with high lateral resolution using a dynamically focusing multi-lens system", Proc. SPIE 7372, Optical Coherence Tomography and Coherence Techniques IV, 73721S (13 July 2009); https://doi.org/10.1117/12.831829

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