The invention relates to an optical system for the collimation or concentration of light radiation.

The structures (18a) for coupling the radiation are different to the structures (18b) for decoupling the radiation and have radiation focussing properties.

A solar energy utilization unit comprises a solar radiation concentrating component and a solar radiation receiving component.

Solar collectors with radiation concentration systems.

Solar collectors with radiation concentration systems.

Solar collectors with radiation concentration systems.

Solar thermal collectors of concentration of solar radiation.

The solar thermal collector of concentration of solar radiation.

The present invention relates to a concentrator for concentrating solar radiation and to the production thereof from polymeric materials.

The method includes generating ultra-wideband radiation, conveying the ultra-wideband radiation to a focusing element, and focusing the ultra-wideband radiation on a target with the focusing element.

The invention relates to a device for determining a gas concentration, which contains an infrared radiation source, a first radiation detector and a second radiation detector.

The exposure reduces the concentration of free radicals generated by the radiation.

The invention relates to an optical system for the collimation or concentration of light radiation.

The structures (18a) for coupling the radiation are different to the structures (18b) for decoupling the radiation and have radiation focussing properties.

A solar energy utilization unit comprises a solar radiation concentrating component and a solar radiation receiving component.