Rodenstock Gmbh

Optische Werke G. Rodenstock

Herbert Schuster

Manfred Melzig

Herbert Zinner

Erhard Effer

Werner Mueller

Qiang Zheng

Stephan Trumm

Donald Scott Nelson

Werner Müller

Karl Huber

Ferdinand Schreder

Erich Koell

Reiner Beck

Charles William Carper, Jr

Guiseppe Martinuzzi

Erich KÖLL

A method for producing a spectacle lens having in particular a diffractive microstructure on at least one lens surface. To this end, a thin structural support layer is initially made available, which on a surface has a microstructure. A lens main body is then cast to the microstructure of the structural support layer.

Producing microstructured spectacle lenses by means of transfer layer

A high refractive index, curable, synthetic resin composition comprising a core resin composition composed of a mixture of ethylenically unsaturated compounds, and an initiation system containing both photo and thermal initiators, particularly a photochromic resin composition which further includes at least one photochromic dye. Also a curing process, which includes a combination of multi-step radiation curing and thermal annealing. Articles produced of cured composition exhibit superior physical and, in appropriate cases, photochromic properties and can be easily mass produced on a commercial scale due to short processing time and use of readily available chemicals.

High index curable photochromic composition and its process

Process for the production of a photochromic object

An optically transparent photochromic plastic material is described which is comprised of materials with a sulphur content and which via polymerization processes contains photochromic organic compounds as solid ingredients, which possess at least two ring systems linked via carbon atom and whose photochromic tint is based on a reversible bond rupture to the spiro-C atom.

Optically transparent photochromic plastic material

Growing community of inventors

Emmering, Germany

Herbert Schuster