Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Frederick W. Eggers0
Douglas H. Marman0
Date of Patent
July 21, 2009
0Patent Application Number
113897460
Date Filed
March 28, 2006
0Patent Primary Examiner
Patent abstract
A smoke detector that includes at least one image-forming reflective surface, at least one light source and at least one light sensor. In operation, at least one light source emits light from a first area thereon and the reflective surface focuses the light onto a second area that includes at least one light sensor, wherein the first area is smaller than the second area.
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