Spectacle lens and method for producing same

Abstract

The invention relates to a spectacle lens and a production method thereof. The present invention relates to the spectacle lens comprising: a first volume element group comprising a plurality of firstvolume elements arranged in a pattern of grid points of a geometric grid to form a first partial grid and together form a first portion of the spectacle lens having a refractive power for observing afirst object distance; a second of volumetric element group comprising a plurality of second volume elements, and a plurality of grid points are arranged in a pattern of grid points of the geometric grid to form a second partial grid, and together a second portion of the spectacle lens having a refractive power for observing a second object distance different from the first object distance is formed. The spectacle lens is characterized in that the transition between one of the first volume elements and the adjoining one of the second volume elements is achieved by a gradual change in the material of the first and second volume elements adjoining each other, wherein each first volume element has a volume between 1000 [mu]3 and 1 mm3 and / or the second volume element each has a volume between1000 [mu]3 and 1 mm3.

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 lens and its production method". technical field [0002] The invention relates to spectacle lenses according to the preambles of patent claims 1 to 3 . 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 lenses. Single vision lenses are eyeglass lenses designed with only one refractive power present. ...

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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