compensator

An optical component used to introduce an (adjustable) optical path length difference (retardation) between the normal components (eigenpolarizations) of a polarized light wave. A wave plate usually introduces a fixed optical path difference.

See also: retardation, wave plate, polarized light microscopy, birefringence

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偏光観察法

交差偏光照明を用いた複屈折物質の顕微鏡観察法