为了既节省稀有昂贵的冰洲石晶体材料，又尽量提高偏光棱镜的透射比，设计了一种冰洲石晶体与光学玻璃组合的方法。
In order to save the rare Iceland crystal and increase the transmittance of polarizing prism, a polarizing prism made of Iceland crystal and glass was designed.
成品的玻璃纤维产品的时候，看在偏光镜后退火。
The finished glass product when viewed in the polariscope after annealing.
成品的玻璃纤维产品的时候，看在偏光镜后退火。
The finished glass product when viewed in the polariscope after annealing.
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