Reference points for ortho position
AssigneeRodenstock GmbH
InventorsHelmut Altheimer, Gregor Esser, Wolfgang Becken
Life of this patent
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Abstract
The invention relates to a method, a system and a computer program product, in particular for designing or producing a lens having a prismatic effect, and to a lens having a prismatic effect. Said method consists of the following steps: individual data of the spectacle wearer is obtained, said individual user data comprising prismatic prescription data; the prismatic lens is designed taking into account the individual user data; centration data for the prismatic lens is determined in accordance with the prismatic prescription data.
Claims24
A method for producing a spectacle lens with prismatic power for a spectacle wearer, comprising:
- obtaining individual user data of the spectacle wearer, wherein the individual user data comprises prismatic prescription data;
- designing the spectacle lens with prismatic power taking into account the individual user data;
- and
- determining centration data for the spectacle lens with prismatic power depending on the prismatic prescription data.
A prismatic spectacle lens or spectacle lens with prismatic power for a spectacle wearer, comprising a fitting point such that for a correct centration of the spectacle lens for the spectacle wearer, it is located or is to be located horizontally in front of the pupil of the spectacle wearer in the position of wear of the spectacle lens in particular according to the individual user data and in the zero direction of sight of the spectacle wearer, wherein a centration marking, in particular a centration cross, is located at the fitting point.
Dependencies are inferred from the claim text.