ALIGNING A POLARIZATION DEVICE USING A SPATIALLY VARIANT POLARIZATION ELEMENT

An alignment apparatus for a polarization device includes a polarizer subassembly for polarizing a light beam, a rotary support for rotatably supporting the polarization device in a path of the light beam downstream of the polarizer subassembly, an analyzer subassembly downstream of the rotary support for receiving the light beam propagated through the polarization device, and a photodetector array disposed downstream of the analyzer subassembly and extending along the width dimension of the light beam for detecting the light beam propagated through the analyzer subassembly. At least one of the polarizer or analyzer subassemblies includes a spatially variant polarization element having a polarization property varying along the width dimension of the light beam. 一种用于偏振设备的调准装置，包括用于使光束偏振的偏振器子组件、用于在偏振器子组件下游的光束路径中可旋转地支撑偏振设备的旋转支撑物、位于旋转支撑物下游以用于接收通过偏振设备传播的光束的检偏器子组件、以及光电探测器阵列，该光电探测器阵列设置在检偏器子组件下游并沿着光束的宽度维度延伸，用于检测通过检偏器子组件传播的光束。偏振器子组件或检偏器子组件中的至少一个包括具有沿光束的宽度维度变化的偏振属性的空间变化偏振元件。