Optische Werke G. Rodenstock

Gunther Guilino

Herbert Pfeiffer

Helmut Altheimer

Rudolf Barth

Gregor Esser

Walter Haimerl

Peter Baumbach

Jochen Brosig

Christine Meixner

Manfred Rohrbach

Hans Stetter

Dieter Kalder

Werner Koppen

Monofocal ophthalmic lens having two aspherical surfaces

An ophthalmic lens in which one surface is provided with at least one region, in which the refracting power is practically constant except for aspherical corrections, and at least one transition region which is adjacent to the region having practically constant surface refracting power, and in which the surface refracting power increases or decreases continuously, and the other surface is provided with an astigmatic effect. The orientation of the surface having an astigmatic effect relative to the surface having continuous refracting power change is dependent on the position of the axis of the astigmatism of the eye. The surface having an astigmatic effect deviates from the toric shape and is independent of the orientation of the surface relative to the surface having continuous refracting power change which is a surface optimized for the axial position of 0.degree..

Ophthalmic lens having an astigmatic effect

Series for progressive spectacle lenses

Ophthalmic lens having a changing refractive index

Opthalmic lens for use in the correction of astigmatism

Progressive ophthalmic lens

A multifocal lens is described with a main lens designed for distance vision and a segment designed for near vision. The lens in accordance with the present invention is characterized by the fact that one surface of the segment consists of the progression area and the reading portion of a progressive surface. In an advantageous further development the progressive surface whose progression area and reading portion form one surface of the segment is designed in such a way that its surface astigmatism is concentrated essentially in the distance portion.

Multifocal lens

Progressive power ophthalmic lens

A uniform strength ophthalmic lens having a gradient refractive index changing rotational-symmetrically about the optical axis in which the curvature course of at least one of the two surfaces of the ophthalmic lens is selected without consideration of correction of aberration so that the critical thickness of the ophthalmic lens does not exceed a specific value and that the gradient refractive index is change rotational-symmetrically about the optical axis so as to correct the aberration. In this manner, a significant reduction of the critical thickness of the opthalmic lens, i.e., the center thickness is a positive lens and peripheral thickness in a negative lens, is achieved while providing an ophthalmic lens having good image-forming properties.

Uniform strength ophthalmic lens having a gradient refractive index

A multifocal spectacle lens is described with a high positive focal power, with a convex front surface which comprises an aspheric focal portion with an additional near segment, a transition zone surrounding the focal portion and a rim zone, and with an inside surface which forms an afocal margin together with the rim zone. The multifocal spectacle lens according to this invention is characterized by the fact that the near segment has an aspheric design and is separated from the focal section above it by a dividing line which has an approximately straight course. The main meridian of the near segment carries over into the main meridian of the focal section above it continuously and practically without any jump. In an advantageous further design of the spectacle lens according to this invention, an aspheric intermediate portion is provided between the near segment and the distance portion being separated from the distance portion by a dividing line with an approximately straight course and whose vertical main meridian also carries over into the main meridian of the distance portion continuously and practically without any jump.

Multifocal spectacle lens with high positive focal power

A spectacle lens with a high positive refracting power, whose front surface has an aspheric, rotationally symmetric effective part. The effective part is configured in accordance with the following equation: ##EQU1## where z is the sagitta, h is the distance from the optical axis, C is determined by the desired refracting power of the front surface at the vertex, and K and I.sub.i are aspheric coefficients. The aspheric coefficients K and I.sub.i are determined so that either the visual acuity V is a maximum or .vertline..DELTA.R.vertline.+.vertline..DELTA.S.vertline. is a minimum. The lens produces a pattern of aberration which allows complete utilization of the visual field for dynamic vision.

Spectacle lens with high positive refractive power

In the disclosed lens, one lens surface is divided into an upper distance-vision portion FT, a lower near-vision portion NT, and a varying or transitional region PB between the two other portions. In the upper distance-vision portion, the surface contains a far reference point B.sub.F and exhibits predetermined average distance-vision surface refractive powers D.sub.F. The lower near-vision portion contains a near-vision reference point B.sub.N and has predetermined average near-vision surface refractive powers D.sub.N. The transitional region exhibits average surface refractive powers D.sub.P which effect a smooth transition from the distance-vision portion to the near-vision portion. The surface is divided into a temporal portion and a nasal portion by a principal meridian M which forms an umbilical line.

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Munich, Germany

Gunther Guilino