Reflection layers formed from an aluminum oxide particle

摘要

An aluminum oxide particle mixture for reflection layers in discharge lamps, and to discharge lamps of this type. The mixture has a first coarse-grained component and a second fine-grained component, with a primary grain size of preferably d₅₀(1) between 0.3 mum and 0.5 mum and d₅₀(2) of at most 0.05 mum, respectively (with an agglomerated size of the fine particles of less than 0.15 mum).