constringence


Also found in: Medical, Encyclopedia, Wikipedia.

constringence

(kənˈstrɪndʒəns)
n
(General Physics) physics inverse of the dispersive power of a medium
References in periodicals archive ?
The Abbe number, otherwise known as constringence or V-value, is its reciprocal.
"n" is the refractive index of the high index lens in question Plastic Curve Variation Factor (CVF) Reduction in lens lenses Relative to CR39 edge thickness CVF = (1.498-1)/(n-1) 1.586 0.85 15% 1.600 0.83 17% 1.740 (3.67 33% Glass Curve Variation Factor (CVF) Reduction in lens lenses Relative to Crown edge thickness CVF = (1.523-1)/(n-1) 1.7 0.75 25% 1.8 0.65 35% 1.9 0.55 45% Table 2 Optical quality of various lens materials in terms of constringence (Abbe number).