偏振计;旋光计用来测量经过光学结构或样品的极化光的偏振平面旋转的一种仪器 An instrument used to measure the rotation of the plane of polarization of polarized light passing through an optical structure or sample.
宝丽来一种经过特殊处理的透明塑料的商标,该塑料能使通过它的光发生偏振,用于减少强光的光学设备中 A trademark used for a specially treated, transparent plastic capable of polarizing light passing through it, used in glare-reducing optical devices.