Optical Imaging With the Use of a Scattering Lens
Optical Imaging With the Use of a Scattering Lens
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DOI：
10.1109/jstqe.2013.2275942
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发表时间：
2014-03-01
影响因子：
4.9
通讯作者：
Choi, Wonshik
中科院分区：
文献类型：
--
作者：
Choi, Youngwoon;Yoon, Changhyeong;Choi, Wonshik
多次光散射引起的“浑浊”会扭曲波的传播，从而破坏光学成像。例如，表现出光学混浊的半透明生物组织对成像深度和能量传输造成了限制。在这里，我们介绍了一种称为混浊透镜成像（TLI）的新颖方法，该方法记录散射介质的传输矩阵，表征介质的输入输出响应。了解该传输矩阵可以让我们从扭曲的传输波中找到入射波。因此，它将高度复杂的介质转化为有用的成像光学器件。我们证明，通过使用传输矩阵可以消除散射介质造成的图像失真，从而可以检索出干净的物体图像。我们将 TLI 扩展到通过多模光纤（也是一种散射介质）进行成像，并通过使用单个多模光纤本身作为透镜来演示内窥镜成像。此外，我们还表明 TLI 消除了使用图像光纤束时的像素化伪影并提高了空间分辨率。我们利用多重光散射的方法将为先进的光学生物成像方法奠定基础。
"Turbidity" caused by multiple light scattering distorts the propagation of waves, and thus undermines optical imaging. For example, translucent biological tissues exhibiting optical turbidity have posed limitations on the imaging depth and energy transmission. Here, we introduce a novelmethod called turbid lens imaging (TLI) that records a transmission matrix of a scattering medium charactering the input-output response of the medium. The knowledge of this transmission matrix allows one to find an incident wave out of the distorted transmitted wave. Therefore, it converts the highly complex medium into a useful imaging optics. We demonstrate that the image distortion by a scattering medium can be eliminated by the use of the transmission matrix and a clean object image can be retrieved as a result. We extend TLI for imaging through a multimode optical fiber, which is also a scattering medium, and demonstrate an endoscopic imaging by using a single multimode optical fiber itself as a lens. In addition, we show that TLI removes the pixelation artifact in using an image fiber bundle and improve spatial resolution. Our method of making use of multiple light scattering will lay a foundation for advance optical bioimaging methods.