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出典:Wiktionary
出典:『Wiktionary』 (2008/08/10 17:27 UTC 版)
folded optics
出典:Wikipedia
出典:『Wikipedia』 (2011/02/28 01:10 UTC 版)
Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismatic binoculars are a well-known example.
Folded optics