ROTATING WAVELENGTH CONVERSION ELEMENT

摘要

A method and apparatus is described for producing high brightness, e.g. multicolor light, whereby a region (7, 9) of a wavelength conversion element (12) and a light source producing excitation light are moved relative to each other so that said region (7, 9, 4) is exposed to the excitation light at different times and in a progressive movement that scans across a part of the entire surface of the wavelength conversion element. The wavelength conversion element can be cooled by air or with a liquid.