Patent ID: 6518703
Filing Date: 2003-02-11
Classification: H01J

Abstract:
An electrodeless discharge lamp apparatus comprising:high frequency oscillation means of generating high frequency energy; high frequency propagation means of propagating said generated high frequency energy; an electrodeless discharge energy supply apparatus including a surface wave transmission line having electrical conductivity, configured in a substantially cylindrical or semicylindrical shape including an axial direction, and including a prescribed periodic structure, for exciting a surface wave by the high frequency energy; high frequency coupling means of coupling said propagated high frequency energy into said electrodeless discharge energy supply apparatus; an electrodeless discharge lamp in which a discharge is produced by the surface wave generated by said electrodeless discharge energy supply apparatus in the vicinity of said surface wave transmission line; and high frequency leakage prevention means of preventing the high frequency energy from leaking from the electrodeless discharge energy supply apparatus; wherein at least a portion of said surface wave transmission line is covered with an optically reflective member; and the high frequency leakage prevention means encloses at least the electrodeless discharge energy supply apparatus and the electrodeless discharge lamp, and at least a portion of the high frequency leakage prevention means includes an optically transmissive member.