Temperature radiator

Abstract

A temperature radiator, which comprises an emission surface emitting a thermal radiation, is provided with a radiation converter to which a laser beam is irradiated. The radiation converter comprises a micro-structured receiving surface and a micro-structured emission surface. These two surfaces are surrounded by a smooth boundary. The laser radiation is absorbed at the receiving surface and converted into thermal radiation which is emitted in a uniformly distributed manner at the emission surface.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

A preferred embodiment of the invention will now be described in greater detail with reference to the drawings in which:

FIG. 1 shows a perspective fragmentary sectional view of the temperature radiator; and

FIG. 2 shows an enlarged view of the body of the radiation converter.

Claims

1. A temperature radiator, in particular for use in miniaturized optical systems, wherein a radiation converter comprises a radiation-absorbing receiving surface to which a laser beam is irradiated, and an emission surface.

2. The temperature radiator according to claim 1, wherein the radiation converter is made from a ceramic material, in particular silicon carbide.

3. The temperature radiator according to claim 1, wherein the receiving surface is a limited surface area with an increased porosity as compared with its environment.

4. The temperature radiator according to claim 3, wherein a boundary of the receiving surface comprises a polished surface.

5. The temperature radiator according to claim 1, wherein the receiving surface is provided with numerous bores.

6. The temperature radiator according to claim 5, wherein the bores are conical or truncated.

7. The temperature radiator according to claim 5, wherein the bores are arranged in a close-packed manner at the surface of the radiation converter.

8. The temperature radiator according to claim 1, wherein the emission surface is a limited surface area with an increased porosity as compared with its environment.

9. The temperature sensor according to claim 8, wherein a boundary of the emission surface comprises a polished surface.

10. The temperature radiator according to claim 1, wherein the emission surface is provided with numerous bores.

11. The temperature radiator according to claim 10, wherein the bores are conical or truncated.

12. The temperature radiator according to claim 10, wherein the bores are arranged in a close-packed manner at the surface of the radiation converter.

13. The temperature radiator according to claim 1, wherein the radiation converter is composed of a body which is held by a holding fixture with poor heat conductivity.

14. The temperature radiator according to claim 13, wherein the holding fixture is a three-point holding fixture which contacts the body only at three locations.

15. The temperature radiator according to claim 1, wherein a tubular housing is provided which comprises, on an end wall, a laser emitting in parallel to the housing axis, and which supports a holding fixture holding the radiation converter.

16. The temperature radiator according to claim 1, wherein the radiation converter comprises a generally truncated body, wherein the receiving surface is provided at the small end wall and the emission surface is provided at the larger surface.

17. The temperature radiator according to claim 1, wherein the material of the radiation converter has a low intrinsic emission capacity of a maximum of 1%.