Solar concentrator and production method
AssigneeDocter Optics SE
InventorsWolfram Wintzer, Peter Mühle, Lars Arnold, Alois Wilke, Hagen Goldammer, Andreas Baatzsch
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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.
Claims24
-36. (canceled)
A solar concentrator having a solid body of transparent material, which solid body comprising:
- a light entry face;
- a convex light exit face curved with a radius of curvature of more than 30 mm;
- and
- a light guide portion between the light entry face and the convex light exit face tapering in the direction of the convex light exit face, which light guide portion is restricted by a light guide portion surface between the light entry face and the convex light exit face.
A solar concentrator made from transparent material, which solar concentrator comprising:
- a light entry face;
- a convex light exit face curved such that the maximum of its deviation of contour from a light exit plane is less than 100 μm;
- and
- a light guide portion between the light entry face and the convex light exit face tapering in the direction of the convex light exit face.
A solar module comprising:
- a photovoltaic element;
- and
- a solar concentrator made from transparent material, the solar concentrator comprising:
- a light entry face;
- a convex light exit face connected to the photovoltaic element;
- and
- a light guide portion between the light entry face and the convex light exit face tapering in the direction of the convex light exit face.
A method for generating electric energy, the method comprising:
- providing a photovoltaic element;
- providing a solar concentrator made from transparent material, the solar concentrator comprising:
- a light entry face;
- a convex light exit face;
- and
- a light guide portion between the light entry face and the convex light exit face tapering in the direction of the convex light exit face;
- cementing/gluing the convex light exit face to the photovoltaic element;
- and
- making sunlight to enter into the light entry face.
A method for producing a solar concentrator from transparent material, wherein the solar concentrator comprises a light entry face, a convex light exit face and a light guide portion located between the light entry face and the convex light exit face and tapering in the direction of the light exit face, which light guide portion is restricted by a light guide portion surface between the light entry face and the convex light exit face;
- the method comprising:
- providing a first mold, adapted for molding the light entry face;
- providing at least one second mold having a concave portion adapted for molding the convex light exit face;
- drawing transparent material into the second mold by means of a depression;
- and
- blank molding the transparent material between said first mold and said second mold for creating the solar concentrator.
Dependencies are inferred from the claim text.