Novartis Ag

Roland Hauck

Peter Hagmann

Roger Biel

Stefan Bickert

Peter Herbrechtsmeier

Bernhard Seiferling

Axel Heinrich

Wolfgang Geissler

Achim Muller

Otto Kretzschmar

John Golby

Werner Steffan

Karl Baur

Hubert Lutz

Anette Lang

Thomas Schulz

Hans W&ouml;rner

Roland Seibert

Olaf Rothe

Peter H&ouml;fer

In an inspection module for inspecting optical parts ( ) for defects, especially contact lenses manufactured as injection-moulded parts, the optical parts ( ) are illuminated from one side and are observed from the opposite side by means of an image-resolving sensor ( ). The image data of the sensor ( ) are forwarded to image-processing means for identification of defects. To obtain a high throughput with a simple construction, a chain ( ) of liquid-filled vessels ( ) circulating in an endless line is provided. The endless line is passed in an inspection station ( ) between an illumination device ( ) and the image-resolving sensor ( ). Handling means in the form of grippers ( ) revolve with the vessels ( ), by means of which optical parts ( ) to be inspected can be introduced into the vessels ( ) at a position of the line upstream of the inspection station ( ) and the inspected parts can be taken out of the vessels ( ) at another position of the line.

Inspection module for inspecting optical parts for faults

The invention relates to an apparatus for the photo-initiated chemical cross-linking of material ( ). To form one or more mouldings the material is enclosed in an optically transparent mould ( ). The apparatus has at least one light source ( ), for example a pulsed UV light source by which the material ( ) can be acted upon by a light that triggers the cross-linking. The region to be cross-linked in the mould ( ) is determined at least partially by beam-delimiting elements ( ) between the light source ( ) and the mould ( ). That can be achieved by arranging between the light source ( ) and the mould ( ) a mask ( ) having transparent and non-transparent surface portions. The mask ( ) is then projected onto the material ( ) that is enclosed in the mould ( ) by projection optics ( ). The projection of the mask ( ) onto the material is effected in a telecentric beam path.

Apparatus for the photo-initiated chemical cross-linking of material

A process and an apparatus for the examination, especially the quality control, of optical components, in which an image of the particular component to be examined is produced and flaws in the imaged article are detected by image analysis, as well as the integration of that examining process into the manufacture of the component. The optical components may be optical components for the eye, such as spectacle lenses, contact lenses, intraocular lenses and the like.

Process and apparatus for examining optical components, especially optical components for the eye and device for illuminating clear-transparent

Efficient and consistent processes for manufacturing moldings, especially ophthalmic lenses such as contact lenses. The processes comprises a series of improvements, including improvements in the areas of conditions for dispensing liquid prepolymer into lens molds, male and female mold mating, reusable molds, mold cleaning, lens separation from molds (demolding), lens handling, and in-line inspection. Cyclic series of processing steps are also disclosed. Additionally, an improved molding tool is disclosed, with the molding tool including a male mold housing and a female mold housing, each of which have disposed therein a plurality of mold halves.

Molding processes

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Hohenfels-Deutwang, Germany

Roland Hauck