Abbe number


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Abbe number

[′ä·bə ‚nəm·bər]
(optics)
A number which expresses the deviating effect of an optical glass on light of different wavelengths.
References in periodicals archive ?
The refractive index and Abbe number were measured at the gate and flow end areas indicated in Fig.
When looking off-axis, the patient will experience colour fringing when a lens material has a low Abbe number (Table 2).
According to Dooley, the new material has very low birefringence, the stress distortion inherent in lens manufacturing, and an Abbe number of 46.