Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yusuke Iso0
Hiroyuki Okami0
Kazuhiko Sakamoto0
Ryuta Okamoto0
Hiroshi Kawakita0
Date of Patent
January 7, 2014
0Patent Application Number
131601000
Date Filed
June 14, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A particle concentration measuring device includes: a measurement region formation part which has a wall (10) of substantially ring-form and through an inner opening of which gas relatively flows orthogonally; a light curtain forming unit (12A, 12B) forming a planar light curtain (FL) in the inner opening: a particle detecting unit (15) receiving scattered light from particles passing through the light curtain (FL) to detect the particles; and a calculating unit (22) calculating particle concentration based on the total number of the particles detected by the particle detecting unit (15) in a volume of an airflow passing through the light curtain (FL) in a unit time.
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