Large FOV short-wave infrared meta-lens for scanning fiber endoscopy
Large FOV short-wave infrared meta-lens for scanning fiber endoscopy
复制标题
用于扫描纤维内窥镜的大视场短波红外元透镜
DOI：
--
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
K. Bohringer
中科院分区：
文献类型：
--
作者：
N. Xie;Matthew D. Carson;Johannes E. Froch;A. Majumdar;E. Seibel;K. Bohringer
扫描光纤内窥镜（SFE）是一种超小型光学成像设备，具有大视场（FOV），可以清晰地看到血管内部，在心血管疾病诊断和手术辅助方面具有很大的潜力，是短波红外（SWIR）生物医学成像的关键应用之一。最先进的SFE系统使用一个小型化的折射球透镜双透镜进行光束投影。超透镜是一种很有前途的替代方案，它可以做得更薄，离轴像差也比折射率透镜少。我们报告了一个具有工作在1310nm的元透镜的SFE系统，以实现与最先进的折射透镜SFE相当的分辨率（视场中心约140µm，成像距离为15 mm）， FOV（约70◦）和焦深（DOF约15 mm）。元透镜的使用减少了光学轨迹的长度从1。2mm ~ 0。86毫米。我们的基于元透镜的SFE在视场边缘的分辨率下降不到2倍，而折光透镜对应的分辨率下降了~ 3倍。这些结果显示了将超透镜集成到内窥镜中以实现设备最小化和光学性能改进的前景。
The scanning fiber endoscope (SFE), an ultra-small optical imaging device with a large field-of-view (FOV) for having a clear forward view into the interior of blood vessels, has great potential in the cardio-vascular disease diagnosis and surgery assistance, which is one of the key applications for short-wave infrared (SWIR) biomedical imaging. The state-of-the-art SFE system uses a miniaturized refractive spherical lens doublet for beam projection. A meta-lens is a promising alternative which can be made much thinner and has fewer off-axis aberrations than its refractive counterpart. We report an SFE system with meta-lens working at 1310nm to achieve a resolution ( ∼ 140 µm at the center of field and the imaging distance of 15 mm ), FOV ( ∼ 70 ◦ ), and depth-of-focus (DOF ∼ 15 mm ), which are comparable to a state-of-the-art refractive lens SFE. The use of the meta-lens reduces the length of the optical track from 1 . 2 mm to 0 . 86 mm . The resolution of our meta-lens based SFE drops by less than a factor of 2 at the edge of the FOV, while the refractive lens counterpart has a ∼ 3 times resolution degradation. These results show the promise of integrating a meta-lens into an endoscope for device minimization and optical performance improvement.
影响因子：
16.6
作者：
通讯作者：
--
影响因子：
16.6
作者：
Tseng E;Colburn S;Whitehead J;Huang L;Baek SH;Majumdar A;Heide F
通讯作者：
Heide F
DOI：
10.1186/s43593-023-00044-4
发表时间：
2023-06-07
期刊：
ELIGHT
影响因子：
--
作者：
Froch, Johannes E.;Huang, Luocheng;Majumdar, Arka
通讯作者：
Majumdar, Arka