G - Physics – 02 – C
Patent
G - Physics
02
C
G02C 7/02 (2006.01) A61B 3/103 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2501217
The invention relates to a method for production of a lens (2), in particular for spectacles, whereby central imaging errors of an eye (1) for correction of a person with defective vision, such as sphere, cylinder and axis are compensated for. At least one refractive surface (9,10) of the lens (2) is embodied such that for at least one viewing direction, both a dioptric correction of the defective vision occurs as well as a correction of imaging errors of a higher order. The effects on acuity and/or visual contrast depend on the size of the pupil opening (5) of the eye (1) for correction and are corrected by the lens (2).
Selon un procédé de fabrication d'une lentille (2), en particulier d'un verre de lunettes, des aberrations centrales d'un oeil à corriger (1) d'une personne atteinte d'une déficience visuelle, telles que la sphère, le cylindre et l'axe, sont compensées. Au moins une surface réfractive (9, 10) de la lentille (2) est conçue de sorte que, pour au moins une direction de regard, une correction dioptrique de la déficience visuelle est effectuée et des aberrations d'ordre supérieur sont corrigées. Leurs effets sur la faculté visuelle et/ou la perception des contrastes dépendent de la taille de l'ouverture pupillaire (5) de l'oeil à corriger (1) et sont corrigés par ladite lentille (2).
Kelch Gerhard
Kratzer Timo
Welscher Markus
Wietschorke Helmut
Carl Zeiss Ag
Dennison Associates
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