Abstract: A method for manufacturing an optical element out of glass comprises placing a blank made of glass on an annular contact face of a supporting body having a hollow cross section. The blank is heated on the supporting body in a cavity of a protective cap that is arranged in a furnace cavity, such that a temperature gradient is established in the blank in such a way that the blank is cooler inside than on an outside region. The blank is press molded to form the optical element.

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.

Abstract: The present disclosure relates to a method for manufacturing an optical element out of glass, wherein a blank made of glass is laid on an annular contact face of a supporting body having a hollow cross section, and is heated on the supporting body, in a cavity of a protective cap that is arranged in a furnace cavity, such that a temperature gradient is established in the blank in such a way that the blank is cooler inside than on an outside region, wherein the contact face is cooled by means of a cooling medium flowing through the supporting body, wherein following heating the glass blank is press molded to form the optical element.

Abstract: The present disclosure relates to a method for producing an optical element from glass, wherein a glass blank is placed on an annular contact surface of a support body with a hollow cross-section, and heated on the support body, in particular in such a way that a temperature gradient is created in the blank in such a way that the blank is cooler on the inside than in the outer region thereof, wherein the contact surface is cooled by means of a coolant flowing through the support body, wherein, after heating, the glass blank is blank-pressed, in particular on both sides, to form the optical element, wherein the contact surface spans a base area that is not circular.

Abstract: The invention relates to a solar concentrator comprising a solid body consisting of a transparent material that has a light coupling surface and a light decoupling surface, the solid body having a light guide part that tapers towards the light decoupling surface, being located between the light coupling surface and the light decoupling surface and being delimited by a light guide surface between the light coupling surface and the light decoupling surface, the light guide surface merging into the light decoupling surface with a constant first derivation. The invention also relates to a method for the production of a solar concentrator, wherein the transparent material is precision-molded between the molds.

Abstract: The invention relates to a method for producing an optical lens element, in particular for illuminating purposes, in particular for producing a headlight lens for a vehicle headlight, in particular for a motor vehicle headlight. A preform made of a transparent plastic, which is amorphous in particular, is molded in an injection mold using an injection molding method. The preform is removed from the injection mold, in particular before the average temperature of the preform falls below the melting temperature of the plastic and/or the flow temperature of the plastic, and the preform is subsequently pressed into the lens element, in particular the blank, using a final contour mold.

Abstract: A process for manufacturing a headlight lens for a vehicle headlight, wherein a blank is molded from transparent plastic material by means of an injection molding process, and wherein the blank is subsequently blank-molded by means of a final contour mold to form the headlight lens.

Abstract: Disclosed is a method for producing a technical glass part, particularly meeting high requirements with respect to contour accuracy and surface quality, particularly a precision lens, wherein a blank including a cast-on section is produced using an injection molding process, wherein the blank is cooled down and subsequently heated, and wherein the blank subsequently is blank molded, particularly on both sides, into a technical glass part meeting high requirements with respect to contour accuracy and surface quality, particularly a precision lens.

Abstract: The invention relates to a method for producing an optical lens element, in particular for illuminating purposes, in particular for producing a headlight lens for a vehicle headlight, in particular for a motor vehicle headlight. A preform made of a transparent plastic, which is amorphous in particular, is molded in an injection mold using an injection molding method. The preform is removed from the injection mold, in particular before the average temperature of the preform falls below the melting temperature of the plastic and/or the flow temperature of the plastic, and the preform is subsequently pressed into the lens element, in particular the blank, using a final contour mold.

Abstract: A process for manufacturing a headlight lens for a vehicle headlight, wherein a blank is molded from transparent plastic material by means of an injection molding process, and wherein the blank is subsequently blank-molded by means of a final contour mold to form the headlight lens.

Abstract: The invention relates to a solar concentrator, comprising a solid body made of a transparent material, which has a light coupling surface and a convex light decoupling surface, wherein the solid body has a light guide part between the light coupling surface and the convex light decoupling surface, wherein said light guide part is tapered in the direction of the convex light decoupling surface. The invention further relates to a production method, wherein the material is precision-molded between two molds.

Abstract: The invention relates to a method for producing a solar concentrator from a transparent material. The solar concentrator comprises a light coupling surface and a light decoupling surface, the solid body comprises a supporting frame with an outer edge between the light coupling surface and the convex light decoupling surface and the transparent material is precision moulded between a first mould and a second mould to form the solar concentrator in such a way that the outer edge is moulded or formed without any or with only partial contact with said mould.

Abstract: Disclosed is a method for producing a technical glass part, particularly meeting high requirements with respect to contour accuracy and surface quality, particularly a precision lens, wherein a blank including a cast-on section is produced using an injection molding process, wherein the blank is cooled down and subsequently heated, and wherein the blank subsequently is blank molded, particularly on both sides, into a technical glass part meeting high requirements with respect to contour accuracy and surface quality, particularly a precision lens.

Abstract: The present invention relates to a device and a method for producing an optical lens, especially a precision lens, using a first mold, a convexity being pressed into an essentially plane surface of a glass blank, especially of a glass ingot, without the first mold touching the surface of the convexity or a substantial part of the convexity, and the convexity being pressed into a second mold, the second mold touching a substantial part of the convexity.