Optical element

1. An optical element, comprising:

at least one elastically deformable spherical or conical support, on which at least one reflective layer is applied; and

at least one deformation apparatus for elastically deforming the at least one support;

wherein the support extends from an apex in an angularly symmetric fashion around an axis through the apex; and

wherein the deformation apparatus is configured to symmetrically deform the spherical or conical support around said axis.

2. The optical element as claimed in claim 1 ,

wherein the supporting structure is provided with elastic struts.

3. The optical element as claimed in claim 2 ,

wherein the elastic struts are in the form of bent wires.

4. The optical element as clamed in claim 3 ,

wherein the bent wires are subject to bending stress.

5. The optical element as claimed in claim 1 ,

wherein the support has a support layer, which is provided with the at least one reflective layer and which is made from a rubber material.

6. The optical element as claimed in claim 1 ,

wherein the deformation apparatus comprises:

at least one tensile element acting on the support; and

a tensioning apparatus fastened on the support for optionally tensioning the tensile element and relieving said tensile element of tension.

7. The optical element as claimed in claim 6 ,

wherein the tensile element acts on an edge of the support, which edge is opposite the fastening region of the tensioning apparatus.

8. The optical element as claimed in claim 6 ,

wherein the tensile element comprises at least one tension wire or tension bar.

9. The optical element as claimed in claim 6 ,

wherein the at least one tensile element is fastened on a thread of the tensioning apparatus.

10. The optical element as claimed in claim 6 ,

wherein the tensile element is made from a transparent polymer.

11. The optical element as claimed in claim 10 ,

wherein the tensile element is made from nylon.

12. The optical element as claimed in claim 6 ,

wherein the tensioning apparatus has a clamping apparatus for optionally holding and releasing the at least one tensile element.

13. The optical element as claimed in claim 1 , further comprising:

at least two elastically deformable supports; and

a deformation apparatus for jointly deforming the supports.

14. The optical element as claimed in claim 13 ,

wherein the reflective layer of the at least one support is spherical.

15. The optical element as claimed in claim 13 ,

wherein the reflective layer of the at least one support is conical.