Invention Grant
US08421046B2 Optical sensor for detecting valuable documents and method for keeping a sensor window of the sensor clean
有权
用于检测有价值文件的光学传感器和保持传感器传感器窗口清洁的方法
- Patent Title: Optical sensor for detecting valuable documents and method for keeping a sensor window of the sensor clean
- Patent Title (中): 用于检测有价值文件的光学传感器和保持传感器传感器窗口清洁的方法
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Application No.: US12672159Application Date: 2008-08-08
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Publication No.: US08421046B2Publication Date: 2013-04-16
- Inventor: Karl-Heinz Leuthold
- Applicant: Karl-Heinz Leuthold
- Applicant Address: DE Munich
- Assignee: Giesecke & Devrient GmbH
- Current Assignee: Giesecke & Devrient GmbH
- Current Assignee Address: DE Munich
- Agency: Bacon & Thomas, PLLC
- Priority: DE102007037923 20070810
- International Application: PCT/EP2008/006574 WO 20080808
- International Announcement: WO2009/021697 WO 20090219
- Main IPC: G01N21/15
- IPC: G01N21/15 ; G07D7/12
Abstract:
In a method for keeping clean a sensor window of an optical sensor for detecting value documents and/or at least one property of value documents which is disposed with at least one portion in a beam path of the sensor, a gas film attached to a surface of the portion is generated on the portion of the sensor window from gas moving relative to the portion.
Public/Granted literature
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