Translation of "Ophthalmic lenses" in German

Ophthalmic lenses having a changing refractive index have frequently been dealt with in the literature in the field.

As an example for ophthalmic lenses and similar objects, reference is being had to contact lenses in the following.

DD 298645 does not disclose any use as optical or ophthalmic lenses.

Preferred mouldings are ophthalmic lenses, especially contact lenses.

The objective of the invention is to provide an improved manufacturing process for ophthalmic lenses.

Rodenstock is Germany’s leading manufacturer of ophthalmic lenses and frames.

Bühler Leybold Optics is a provider of solutions for the surface finishing of ophthalmic lenses.

Rodenstock is Germany’s leading manufacturer of ophthalmic lenses and spectacles frames.

This relates in a similar way to the production of shell moulds, for example, for producing ophthalmic lenses.

Polarized ophthalmic lenses reduce the reflections from smooth and bright surfaces or from wet roads.

SHSOphthalmic autoROC is an automated metrology system for ophthalmic lenses, molds and metal tools.

In the case of so-called ophthalmic lenses for spectacles, the thickness of the component can be determined via the compression path.

On request, you can insure your valuable Rodenstock ophthalmic lenses against theft, breakage and damage.

The first popular applications were sun protection and anti-reflection coatings for ophthalmic lenses, anti-reflection coatings for camera lenses, optical filters and reflectors and thin films for electronic applications.

An ophthalmic lens according to claim 1 or 2, wherein said systems of surfaces at given levels are parallel surfaces to a surface having a shape similar to the shape of the surfaces contributing to a rise in refractive power of progressive ophthalmic lenses.

In this manner the course of the refractive index selected in accordance with the present invention permits efficient fabrication of ophthalmic lenses over a great range of power.

Naturally, surfaces may be used for one or both of the surfaces, whose surface course is the same as that of ophthalmic lenses having astigmatic and/or progressive refracting power and a uniform refractive index.

In contrast to present day conventional spherical ophthalmic, respectively in contrast to ophthalmic lenses whose boundary surfaces 1 and 2 may be selected according to the so-called Tscherning principle, a reduction of the center thickness dm is attained by a special design of the surface instead, which--as will be shown in the following section--would result in unacceptable aberrations without the invented variation of the refractive index and, in particular, with a constant refractive index.

For this purpose, by way of illustration, reference is made to aspherical ophthalmic lenses having a reduced center thickness of the applicant of the present patent application.

This U.S. patent relates to a process for improving the use properties of spectacle glasses, glasses for sunglasses, and similar ophthalmic lenses by chemical hardening by means of ion exchange.

Compounds, such as those described, e g., by Becker, possess at normal temperatures (5°-40° C.) not only in solution, but also in polydiethyleneglycolbisallylcarbonate, a plastic material often utilized for ophthalmic lenses, such a fast inverse reaction that the equilibrium concentrations attainable with natural illumination strengths (10-100 klux) of the longwave-absorbing form are too small to produce preceivable darkening, respectively a change in color.

Although refractive indices with a radial course can theoretically be produced by means of "ion exchange" via the cylindrical surface of a very long glass cyclinder, in practice, for ophthalmic lenses, it is only possible with a few types of glass due to the usually very shallow penetration of the ion exchange effect.

In this way, ophthalmic lenses with astigmatic power can be made, the front surfaces of which and the surface facing the eye of which have a rotationally symmetrical form so that (by way of illustration) no variation of peripheral thickness occurs in spite of the astigmatic power.