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.
The lens is made from Ohara's 2-LAH79 glass, which has a refractive index 2.0 and Abbe Number of 28.3.
The maximum deviation from the nominal values listed in the datasheet is only A 0.0001 with the refractive index nd and A 0.1 % with the Abbe number ?d with this new level of quality.
The Abbe number, otherwise known as constringence or V-value, is its reciprocal.