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首页> 外文会议>Conference on reflection, scattering, and diffraction from surfaces >The focusing of light scattered from diffuse reflectors using phase modulation
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The focusing of light scattered from diffuse reflectors using phase modulation

机译：使用相位调制从漫反射器散射的光的聚焦

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“Indirect photography” was recently demonstrated for imaging hidden scene information through the collectionand radiometric modeling of light reflecting off of visible reflecting surfaces. The ability to focus the beam thatreflects off the visible surface to a tight spot on the hidden object is theorized to simulate a direct line of sightfrom the light source to the object, reducing the radiometric model to that of the previously demonstrated “dualphotography.” Experiments involving the focusing of light transmitted through highly scattering media havebeen adapted to the case of reflection. The focusing of a HeNe laser reflected off diffusely scattering surfaces toa tight spot is demonstrated using phase control. A liquid crystal spatial light modulator assigns pixelated phasedelay to the beam to conjugate the scattering properties of the reflector. Intensity enhancement values between13.8 and 122.3 are achieved for the surfaces studied. Samples with relatively strong specular reflection achievehigher enhancement for a given geometry. More diffusely reflecting materials achieve higher enhancement inregions of nonspecular scatter, facilitating non-mechanical beam steering.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
机译：最近，“间接摄影”最近被证明是通过反射可见反射表面的光的光光射线模拟来成像隐藏的场景信息。将光束聚焦到隐藏物体上的可见表面上的光束对焦的能力被理论上被理论为模拟光源的直接视线到物体，将辐射模型降低到先前演示的“双摄影”的光学模型。涉及通过高度散射介质传输的光的聚焦的实验适用于反射的情况。使用相位控制证明了将螺旋激光反射截止散射表面的浓缩散射表面的聚焦。液晶空间光调制器将像素化相平分配给光束以缀合反射器的散射特性。为所研究的表面实现了13.8和122.3的强度增强值。具有相对强烈的镜面反射的样本，对给定几何体实现高增强。更漫游的反射材料实现了高增强的不分隔散射，促进了非机械束转向。©（2012）照片光学仪表工程师（SPIE）的版权协会。仅供个人使用的摘要下载。

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