Patent ID: 6046545
Filing Date: 2000-04-04
Classification: H01J,Y02B

Abstract:
A light source apparatus comprising:a magnetron with an antenna for generating microwaves;a first cylindrical member attached to said magnetron, said first cylindrical member composed of a cylindrical housing and an extended portion extending from said cylindrical housing, said extended portion having a diameter smaller than a diameter associated with said cylindrical housing;a second cylindrical member attached to said antenna of said magnetron and disposed coaxially with respect to said first cylindrical member;an electrodeless lamp bulb disposed near a free end of said second cylindrical member; anda cap having through-holes attached to said extended portion so as to cover said electrodeless lamp bulb, wherein said second cylindrical member comprises a base and a remaining portion, said base situated within said cylindrical housing and having a length of approximately 1/4 of a wavelength at a microwave frequency, said remaining portion comprising a coaxial resonator extending from said base into said extended portion, said remaining portion having a diameter larger than a diameter associated with said base.