Opt Lett. 2019 Oct 15;44(20):4961-4964. doi: 10.1364/OL.44.004961.
Successful implementation of a catheter-based imaging system relies on the integration of high-performance miniaturized distal end optics. Typically, compensation of chromatic dispersion, as well as astigmatism introduced by the device's sheath, can be addressed only by combining multiple optical elements, adversely impacting size and manufacturability. Here, we present a 300×300×800 μm monolithic optic that provides high optical performances over an extended wavelength range (near UV-visible-IR) with minimal chromatic aberrations. The design of the optic, fully optimized using standard optical simulation tools, provides the ability to freely determine aperture and working distance. Manufacturing is cost effective and suited for prototyping and production alike. The experimental characterization of the optic demonstrates a good match with simulation results and performances well suited to both optical coherence tomography and fluorescence imaging, thus paving the way for high-performance multimodal endoscopy systems.
成功实现基于导管的成像系统依赖于高性能微型远端光学元件的集成。通常，只能通过组合多个光学元件来补偿由设备护套引起的色差和像散，这会对尺寸和可制造性产生不利影响。在这里，我们展示了一种 300×300×800μm 的整体式光学器件，该光学器件在近紫外-可见-红外的扩展波长范围内具有出色的光学性能，同时具有最小的色差。该光学器件的设计完全使用标准光学模拟工具进行了优化，可自由确定孔径和工作距离。制造具有成本效益，适合原型制作和生产。光学器件的实验特性与模拟结果吻合较好，非常适合光学相干断层扫描和荧光成像，从而为高性能多模态内窥镜系统铺平了道路。
