Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hwi Chan Jang0
Sang Sik Yoon0
Jun Pyo Hong0
Date of Patent
August 8, 2017
Patent Application Number
13200369
Date Filed
September 23, 2011
Patent Citations Received
Patent Primary Examiner
Patent abstract
A dust inflow sensing unit and a robot cleaner having the same. The dust inflow sensing unit includes a light emitting element to emit a beam having a transmission region, a light receiving element having a reception region overlapping the transmission region of the light emitting element, and a guide member to restrict the reception region of the light receiving element to a designated range until the reception region reaches the light emitting element.
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