SBIR Phase I: Micro-Optic Spectroscopic Imaging Sensor

这个小企业创新研究（SBIR）一期项目将开发一种基于偏振敏感衍射微光学阵列的微光学光谱成像传感器（MOSIS）。MOSIS将是一种小型、紧凑、轻量级的单片设备，能够实时进行多光谱、偏振成像。第一阶段将使用折射-衍射微光学阵列，集成高分辨率电荷耦合器件（CCD）阵列，形成二维（2-D）成像传感器，使传统的光谱系统微型化。由于折射率元件的聚焦特性和衍射元件的高光谱色散，该器件将在可见光到中红外光谱范围内进行高分辨率（1-10纳米）的光谱图像检测。该MOSIS是一种简单的单片焦平面阵列，由三个基本元素组成：(1)折射微透镜阵列；(2)一对共轭双折射衍射光学阵列；(3)二维探测器阵列，可以是商用CCD芯片。这种方法可以应用于任何期望的光谱波段，而不受材料或制造工艺的限制，如无源（全息或多层）和有源（声光或液晶）滤波器器件。预计应用于紧凑、低成本、可靠、偏振成像、多光谱传感器系统，用于海洋监测、环境传感、矿物识别、农业监测、生物医学和化学光谱成像以及工业检查等遥感。＊＊＊

*** 9760845 Aye This Small Business Innovation Research (SBIR) Phase I project will develop a Micro-Optic Spectroscopic Imaging Sensor (MOSIS), based on a polarization sensitive diffractive micro-optic array. MOSIS will be a miniature, compact, lightweight monolithic device capable of multi-spectral, polarimetric imaging in real time. Phase I will microminiaturize a conventional spectrographic system using a refractive-diffractive micro-optic array, integrated with a high resolution charge-coupled-device (CCD) array to form a two-dimensional (2-D) imaging sensor. Because of the focusing property of the refractive element and the high spectral dispersion of the diffractive elements, the device will perform high resolution (1-10 nanommeters) spectroscopic image detection in a broad visible-to-mid IR spectral range. This MOSIS is a simple monolithic focal-plane array consisting of a stack of three basic elements: (1) a refractive microlens array; (2) a pair of conjugate birefringent diffractive optics arrays; and (3) a 2-D detector array, which can be a commercial CCD chip. This approach can be applied to any desired bands of the optical spectrum without any limitations imposed by materials or fabrication processes as in the passive (holographic or multilayer) and active (acousto-optic or liquid crystal) filter-based devices. Applications are expected in compact, low-cost, reliable, polarimetric imaging, multispectral sensor systems for remote sensing in ocean monitoring, environmental sensing, mineral identification, agricultural surveillance, biomedical and chemical spectroscopic imaging, and industrial inspection. ***