EntityQ306243· pop 7· linked from 16 articlesAbbe sine conditionSign in to savecondition that must be fulfilled by a lens or other optical system in order for it to produce sharp images of off-axis as well as on-axis objectsConnectionsopticsEntitymicroscopeEntitydigital object identifierEntitylensEntityFourier transformEntityrefractive indexEntityErnst AbbeEntityimaginary unitEntityspherical coordinate systemEntityexponential functionEntitywavenumberEntityFermat's principleEntityrayEntitymagnificationEntitycomaEntityparaxial approximationEntitytransmittanceEntitydistortionEntitythin lensEntityFourier opticsEntityCategoriesGeometrical opticsGlass physicsMicroscopesTrigonometry