Controlled light source
Patent 4431947 Issued on February 14, 1984. Estimated Expiration Date: 
June 4, 2002. 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.
June 4, 2002. 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 2975330 Light source apparatus Optoelectronic feedback control for a spectrometer Patent #: 4256404 InventorsAssigneeApplicationNo. 06/384853 filed on 06/04/1982US Classes:315/151, Load device irradiating the radiant energy responsive device250/205, Controlling light source intensity315/116, Automatic cut-out or voltage regulator for the heater circuit315/117, Automatic control of the temperature modifier315/158, Radiant energy controlled regulation of the current supply for the load device315/248Induction-type discharge device loadExaminersPrimary: LaRoche, Eugene R.Attorney, Agent or FirmInternational ClassesH05B 41/392 (20060101)H05B 41/39 (20060101) AbstractA feedback control system for maintaining the intensity and spectral distribution of light at a predetermined level at a wavelength characteristic of the excited source. Control of that intensity, which exhibits a systematic but not necessarily a monotonic relation with excitation, is achieved by measuring and controlling the intensity of flux at another characteristic wavelength which is both systematic and monotonic.Field of SearchLoad device irradiating the radiant energy responsive deviceRadiant energy controlled regulation of the current supply for the load device Induction-type discharge device load Automatic regulation WITH LOAD DEVICE TEMPERATURE MODIFIER Electric heater for the load device Automatic cut-out or voltage regulator for the heater circuit | |
