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本文利用改变两片偏振片透射轴之间夹角精确计算出强度变化的原理,设计加工了一个三片偏振片线性测试装置(3px),其测试精度为0.1％。用来标定任意厚度控制装置的透过率值。
In this paper, the principle of changing the intensity between the transmission axes of two polarizers is precisely calculated. A three-piece polarizer linear test device (3px) is designed and manufactured with a testing precision of 0.1%. Used to calibrate the transmittance value of any thickness control device.