Aspheric contact lens design

Spherical lenses inevitably produce imaging errors, so-called spherical aberrations as shown in figure on the right. In aspheric multifocal contact lenses, both distance and near prescriptions are placed in the central visual area, on or close to the pupil. Thanks to the latest manufacturing technologies, we are also able to manufacture aspheric lenses in series with the highest precision. An aspheric lens is rotationally symmetric, with one or more non-spherical surfaces that differ from the shape of a sphere.
Aspheric contact lens design — photo 1
When I open this template in ckeditor, the html template loads but without images. When gazing at something far away, your eyes learn to ignore near objects. They feature a different lens design than the standard spherical lens. Aspheric elements are also used in zoom lenses. The use of an aspheric lens is mainly based on its advantages compared to a spherical lens.

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Aspheric contact lens design — photo 2
It can detect hashtags from images. Customer-specific optical design. Telescopes today, for example, are almost always aspherical, especially those with larger diameters.