Electrode structures for discharge lamps

摘要

An electrode structure configured to operate in a discharge lamp and a method to make such an electrode structure are described. The electrode structure includes an electrode head portion comprising a plurality of raised features arranged in a configuration such that an average pitch of the plurality of raised features is at least 105%. The method includes providing an electrode configured to operate in the discharge lamp and forming raised features on an electrode head portion of the electrode at an average pitch of at least 105%.