| http://www.w3.org/ns/prov#value | - On the cut surface 109a at the incident side for the detection beam, there is cemented 45??? rotatory polarization plate 108, and the detection beam which passes through the 45??? rotatory polarization plate 108 and enters prism 109 via cut surface 109a is split, by beam split coat 115 having only a function to simply split a beam without polarizing, into two directions including a transmission di
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