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US 12,234,174 B2Granted
Method for producing an optical element from glass
AssigneeDocter Optics SE
InventorsAlexander Kuppe, Ralf Polle, Thomas Walther, Peter Mühle, Christoph Dittmann, Stephan Jirak, Hagen Goldammer, Annegret Diatta, Sven Fröhlich
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Abstract
The present disclosure provides an improved production method for optical elements. In this case, it is desirable to achieve high contour accuracy and/or surface quality for optical elements or lenses or headlight lens. In addition, it is desirable to reduce the costs of a production process for objective lenses and/or headlights, microprojectors or vehicle headlights.
Claims14
A method of producing an optical element, the method comprising:
- providing a blank of glass;
- providing a first mold;
- providing at least a second mold;
- providing a first actuator, the first mold and the first actuator being connected by means of a first movable guide rod and at least a second movable guide rod, wherein the first movable guide rod is guided in a first fixed recess in a fixed guide element and the second movable guide rod is guided in a second fixed recess in the fixed guide element;
- providing a second actuator;
- providing a frame, which comprises a first fixed guide rod and at least a second fixed guide rod, wherein the first fixed guide rod and the at least second fixed guide rod are connected at one end by a first fixed connector and at the other end by a second fixed connector, wherein the at least second mold is fixed to a movable guide element, which comprises a first recess through which the first fixed guide rod is guided and a second recess through which the at least second fixed guide rod is guided;
- heating the blank;
- moving the first mold towards the at least second mold by means of the first actuator;
- and
- moving the at least second mold by means of the second actuator in the frame to form a closed cavity for press-molding the heated blank between the first mold and the at least second mold to form an optical element.
7 more elements
Dependencies are inferred from the claim text.