Electrodeless discharge lamp
Patent 4652790 Issued on March 24, 1987. Estimated Expiration Date: 
November 12, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 12, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2326773 2757305 3451579 Electrodeless light source with self-contained excitation source High pressure discharge lamp with vessel having a UV radiation absorbing portion of quartz glass Method and apparatus for igniting electrodeless discharge lamp Patent #: 4359668 InventorAssigneeApplicationNo. 06/797083 filed on 11/12/1985US Classes:313/112, Polarizer or special ray transmission (e.g., filter)313/634, Envelope with particular structure313/636, Envelope composition315/150, Radiant energy responsive load device315/248, Induction-type discharge device load422/186With means applying electromagnetic wave energy or corpuscular radiation to reactants for initiating or perfecting chemical reactionExaminersPrimary: Demeo, Palmer C.Attorney, Agent or FirmInternational ClassesH01J 61/30 (20060101)H01J 65/04 (20060101) AbstractAn electrodeless discharge lamp having an ultraviolet radiation transmission envelope containing a plasma-forming medium. The envelope is formed from two different types of quartz, one of which blocks transmission of ultraviolet radiation 253 nm and shorter, and the other of which transmits radiation of 253 nm or shorter. The quartz which transmits the short wavelength radiation serves as a window for transmitting into the envelope ultraviolet having a wavelength short enough to initiate ionization of the plasma-forming medium within the envelope.Field of SearchInduction-type discharge device load | |
