Electrodeless lamp system with controllable spectral output
Patent 4978891 Issued on December 18, 1990. Estimated Expiration Date: 
April 17, 2009. 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.
April 17, 2009. 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 3604500 3786308 Optoelectronic feedback control for a spectrometer Controlled light source Process colorimeter Method & apparatus for cooling electrodeless lamps Method and apparatus for cooling electrodeless lamps Patent #: 4695757 InventorAssigneeApplicationNo. 344863 filed on 04/17/1989US Classes:315/117, Automatic control of the temperature modifier315/151, Load device irradiating the radiant energy responsive device315/248, Induction-type discharge device load315/326, DISCHARGE DEVICE LOAD315/344Electromagnetic influenced discharge deviceExaminersPrimary: LaRoche, Eugene R.Assistant: Neyzari, Ali Attorney, Agent or FirmInternational ClassesH05B 041/24H01J 015/04 AbstractAn electrodeless lamp system and method for providing light output having a controlled spectral distribution. A lamp having a fill which is not fully vaporized at the lamp operating temperature and which emits in a characteristic region of the spectrum is used. A function generator generates a function signal, and the magnitude of the lamp output in the characteristic region or the ratio of such magnitude and a magnitude in a different characteristic region is compared with the function signal. The difference signal is used to control the amount of cooling gas which is incident on the lamp bulb to control the spectral distribution of the radiation which is emitted by the lamp.Field of SearchInduction-type discharge device loadAutomatic control of the temperature modifier Load device circuit controlled by the temperature modifying medium DISCHARGE DEVICE LOAD Electromagnetic influenced discharge device WITH LOAD DEVICE TEMPERATURE MODIFIER Load device irradiating the radiant energy responsive device Having control means for the temperature modifier | |
