Spectacle lens and method for producing same

Abstract

The invention discloses a spectacle lens and a method for producing the same. The invention relates to a method for producing a spectacle lens. The method comprises the following steps: additively manufacturing a first volume element group, wherein the first volume element group comprises a plurality of first volume elements, the plurality of first volume elements are arranged in the manner of grid points of a geometric grid so as to form a first sub-grid, and the first volume elements together form a first part of the spectacle lens, said part having the dioptric effect for vision for a firstobject distance, additively manufacturing a second volume element group, wherein the second volume element group comprises a plurality of second volume elements, the plurality of second volume elements are arranged in the manner of grid points of a geometric grid so as to form a second sub-grid, and the second volume elements together form a second part of the spectacle lens, said part having thedioptric effect for vision for a second object distance which differs from the first object distance. The invention is characterized in that the first sub-grid and the second sub-grid are arranged soas to intersect during the additive manufacture process.

Description

[0001] This application is a divisional application of a patent application with an application date of July 19, 2017, an application number of 201780057265.7, an international application number of PCT / EP2017 / 068241, and an invention title of "spectacle lenses and production methods thereof". technical field [0002] The invention relates to a spectacle lens according to the preamble of patent claims 3 to 5 and a method for producing a spectacle lens according to the preamble of patent claim 1 . Background technique [0003] Spectacle lenses are known in many variations from the prior art. There are spectacle lenses without a nominal refractive power, as well as corrective spectacle lenses, that is to say spectacle lenses with a refractive power. Refractive power is a general term for the focus and prism power of spectacle lenses. [0004] In the case of corrective spectacle lenses, there is a difference between single vision spectacle lenses and multifocal spectacle lense...

AI Technical Summary

Problems solved by technology

[0018] 1. Large spatial separation between the near-vision area and the far-sighted area

[0019] 2. According to Mahmoud's theorem (Minkwitz's theorem), in the case of a smooth transition from the distance zone to the near zone in a zoom lens, astigmatic distortion towards the edge inevitably occurs

[0021] 4. In the case of non-progressive addition lenses, such as in the case of bifocal or trifocal lenses, a visible aesthetically unattractive fringe between the primary lens and the sub-elements

[0022] 5. Visibly unaesthetically large edge thickness in the case of spectacle lenses with strong refractive power; especially in the case of myopic people, high prism values ​​lead to thicker edges of spectacle lenses

[0023] 6. In the case of prescriptions for forms of spectacle lens front surfaces and / or spectacle frames that are considered aesthetically pleasing, limitations related to the producibility of corrective spectacles; Spectacle lenses are very constrained and thus result in correspondingly little design freedom

[0032] Although various methods are available to produce spectacle lenses that meet the aesthetic perception needs of many people, further improvements are still needed

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