Use of embedded and patterned dichroic surfaces with reflective optical power to enable multiple optical paths in a micro-objective.
Use of embedded and patterned dichroic surfaces with reflective optical power to enable multiple optical paths in a micro-objective.
复制标题
DOI：
10.1364/ao.391654
复制
发表时间：
2020-08-01
期刊：
影响因子：
1.9
通讯作者：
Barton, Jennifer K.
中科院分区：
文献类型：
--
作者：
Vega, David;Sawyer, Travis W.;Pham, Nancy Y.;Barton, Jennifer K.
我们演示了在单个透镜系统中使用具有反射光学功率的图案化二向色性表面来创建多个光路。这些表面的应用使微型内窥镜仅用一个光学系统就能容纳多种成像技术，使包装更加紧凑和可靠。对于每条路径，使用不同的波长来对光路进行光谱分离。二向色性表面被设计成使得可见光波长在光学上不受影响地穿过表面，但近红外波长以望远镜状的配置被反射，其中弯曲的二向色性表面提供反射光功率。我们演示了使用同一套透镜的广域可见单色成像和显微近红外成像。宽视场成像构型的轴上测量分辨率约为14μm，显微成像构型的测量分辨率约为2μm。为了定性地观察成像能力，还展示了物体的广视场白光成像。讨论了光学计量学等领域的其他配置和应用，以扩展所展示的光学系统的多功能性。
We demonstrate the use of patterned dichroic surfaces with reflective optical power to create multiple optical paths in a single lens system. The application of these surfaces enables a micro-endoscope to accommodate multiple imaging technologies with only one optical system, making the packaging more compact and reliable. The optical paths are spectrally separated using different wavelengths for each path. The dichroic surfaces are designed such that the visible wavelengths transmit through the surfaces optically unaffected, but the near-infrared wavelengths are reflected in a telescope-like configuration with the curved dichroic surfaces providing reflective optical power. We demonstrate wide-field visible monochromatic imaging, and microscopic near-infrared imaging using the same set of lenses. The on-axis measured resolution of the wide-field imaging configuration is approximately 14 μm, and the measured resolution of the microscopic imaging configuration is approximately 2 μm. Wide-field white-light imaging of an object is also demonstrated for a qualitative perspective on the imaging capabilities. Other configurations and applications in fields such as optical metrology are discussed to expand on the versatility of the demonstrated optical system.