Vaughn Israel J, Alenin Andrey S, Scott Tyo J
Opt Express. 2017 May 15;25(10):11954-11968. doi: 10.1364/OE.25.011954.
Focal planes arrays (FPA) measure values proportional to an integrated irradiance with little sensitivity to wavelength or polarization in the optical wavelength range. The measurement of spectral properties is often achieved via a spatially varying color filter array. Recently spatially varying polarization filter arrays have been used to extract polarization information. Although measurement of color and polarization utilize separate physical methods, the underlying design and engineering methodology is linked. In this communication we derive a formalism which can be used to design any type of periodic filter array on a rectangular lattice. A complete system description can be obtained from the number of unit cells, the pixel shape, and the unit cell geometry. This formalism can be used to engineer the channel structure for any type of periodic tiling of a rectangular lattice for any type of optical filter array yielding irradiance measurements.
焦平面阵列（FPA）测量与积分辐照度成比例的值，在光波长范围内对波长或偏振的敏感度很低。光谱特性的测量通常通过空间变化的彩色滤光片阵列来实现。最近，空间变化的偏振滤光片阵列已被用于提取偏振信息。尽管颜色和偏振的测量使用不同的物理方法，但底层的设计和工程方法是相关联的。在本通信中，我们推导了一种形式体系，可用于在矩形晶格上设计任何类型的周期性滤光片阵列。从单位晶胞数量、像素形状和单位晶胞几何结构可以获得完整的系统描述。这种形式体系可用于为矩形晶格的任何类型周期性平铺设计通道结构，以用于任何类型的产生辐照度测量的光学滤光片阵列。
