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Numerical aperture

In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes the range of angles over which the system can accept or emit light. By incorporating index of refraction in its definition, NA has the property that it is constant for a beam as it goes from one material to another, provided there is no refractive…

General optics, Fiber optics & Laser physics

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General optics

Laser physics

Fiber optics

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Numerical aperture

Nodes62
Edges61
Triples40
Avg. degree1.97
Density0.032258
Components1

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Numerical aperture

Top relations

related to External links · 19
Numerical aperture → April, Basic Concepts, Davidson, Encyclopedia, Florida State University, Formulas, Laser Physics, Michael, Microscope Objectives, Microscopy, Microscopy Core Facilities, Molecular Expressions, Mortimer Abramowitz, Nikon MicroscopyU, Numerical, Optical Microscopy Primer, Resolution, Technology, UCLA Brain Research Institute
related to Numerical aperture versus f-number · 7
Numerical aperture → Calibri, Candara, Corbel, Georgia, Instead, Numerical, Trebuchet MS
related to Laser physics · 5
Numerical aperture → Far, In, Laser, NA, The
related to Working (effective) f-number · 4
Numerical aperture → In, The, This, When
related to General optics · 2
Numerical aperture → In, NA

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Important terminology

aperture numerical lens na f-number displaystyle light fiber sin angle laser optics microscopy beam theta text optical acceptance distance frac

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
an objective lens is defined by N Ainstance ofthe numerical aperture of an optical system0.80text
camera lensesinstance ofbut it turns out that for well-corrected optical systems0.80text
a more detailed analysis shows that N is almost exactly equal to 1instance ofbut it turns out that for well-corrected optical systems0.80text
Numerical aperturerelated to External linksMicroscope Objectives0.60section
Numerical aperturerelated to External linksResolution0.60section
Numerical aperturerelated to External linksMortimer Abramowitz0.60section
Numerical aperturerelated to External linksMichael0.60section
Numerical aperturerelated to External linksDavidson0.60section
Numerical aperturerelated to External linksMolecular Expressions0.60section
Numerical aperturerelated to External linksOptical Microscopy Primer0.60section
Numerical aperturerelated to External linksFlorida State University0.60section
Numerical aperturerelated to External linksApril0.60section

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