Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
James R Qualey, III0
Date of Patent
January 6, 2009
0Patent Application Number
117960080
Date Filed
April 26, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A smoke detector includes a smoke detection chamber containing a white light LED and a light detector. The light detector detects light within at least two distinct optical wavelength bands, and generates respective signals indicative of the intensities of the detected light. An analyzer determines, based on the measured light intensities of the different wavelength bands, whether a dangerous smoke/fire condition is present.
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