| 摘要 |
PCT No. PCT/DE89/00410 Sec. 371 Date Feb. 22, 1990 Sec. 102(e) Date Feb. 22, 1990 PCT Filed Jun. 22, 1989 PCT Pub. No. WO89/12841 PCT Pub. Date Dec. 28, 1989.An ophthalmic lens having a front and an eye-facing boundary surface and a varying refractive index, which contributes to the correction of aberrations. The ophthalmic lens is distinguished by having at least one system of surfaces at given level (n(x,y,z)=const.) with a constant refractive index, which are spaced the same distance at all points in the direction of their surface normals (parallel surfaces), and which, respectively their extension, intersect the axis connecting the lens apexes of the front surface and the eye-facing surface. |
