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IEVref:731-03-86ID:
Language:enStatus: Standard
Term: maximum theoretical numerical aperture
Synonym1: NA<sub>max th</sub>
[Preferred]
Synonym2:
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Definition: a theoretical value of numerical aperture calculated using the values of refractive index of the core and cladding given by:

( n 1 2 n 2 2 ) 1/2 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaamaabmaabaGaamOBamaaDaaaleaacaaIXaaabaGaaGOmaaaakiabgkHiTiaad6gadaqhaaWcbaGaaGOmaaqaaiaaikdaaaaakiaawIcacaGLPaaadaahaaWcbeqaamaalyaabaGaaGymaaqaaiaaikdaaaaaaaaa@3EC0@

where n1 is the maximum refractive index of the core, and n2 is the refractive index of the innermost homogeneous cladding


Publication date:1991-10
Source:
Replaces:
Internal notes:2016-01-22: The en and fr equations are different in the standard. NA<sub>max th</sub> in the en transferred as a synonym in line with 731-03-85 and since it is not presented as a variable. JGO

2017-06-02: Cleanup - Remove Attached Image 731-03-86.gif
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