| 摘要 |
The invention relates, among other things, to the provision of a set (68) of eyeglass-lens semifinished products composed of at least three series (66-1, 66-2, 66-3) of eyeglass-lens semifinished products having spherical or rotationally symmetric aspherical front surfaces. The series (66-1, 66-2, 66-3) of eyeglass-lens semifinished products differ in pairs in the base material of said series. The base materials have different average indices of refraction. Each of the series (66-1, 66-2, 66-3) comprises, within an actual surface refractive-power range of the front surface thereof in relation to a standard index of refraction of 1.53 between 3.2 D and 6.7 D, at least three types (No. 7, No. 10, No. 13) of eyeglass-lens semifinished products, which types differ in pairs and the front-surface shapes of which types are designed differently in some way. Within said actual surface refractive-power range of the front surface of the series in relation to a standard index of refraction of 1.53 between 3.2 D and 6.7 D, the front-surface shapes of said at least three types (No. 7, No. 10, No. 13) are identical on a central partial surface (which preferably comprises more than 40%, more preferably more than 50% of the total front surface) or the entire front surface of the type for all of the at least three series (66-1, 66-2, 66-3). |
