polarizer
  偏光器,起偏鏡
  po·lar·iz·er /-ˌraɪzɚ/ 名詞
  起偏光鏡,起偏振鏡
  Po·lar·i·zer n. Physics That which polarizes; especially, the part of a polariscope which receives and polarizes the light. It is usually a reflecting plate, or a plate of some crystal, as tourmaline, or a doubly refracting crystal.
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