The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2012
Filed:
Jun. 09, 2009
Tien-yuan Chien, Taipei, TW;
Cheng-kang Yu, Taipei, TW;
Fu-yuan Chang, Taipei, TW;
International Currency Technologies Corp., Taipei, TW;
Abstract
A foreign object detecting apparatus in bill passageway includes a laser light source, a first light detector and a second light detector. The laser light source is arranged in a first lateral side to emit a coherent laser beam toward a second lateral side. The first light detector is arranged in the second lateral side to receive the coherent laser beam and to measure the intensity of the coherent laser beam. The second light detector is arranged in one of a top side and a bottom side, wherein when a foreign object is presence in the bill passageway, the intensity of the coherent laser beam received by the first light detector is decreased by the blocking of the foreign object, and at least a portion of the coherent laser beam which is reflected, refracted, diffracted or scattered by the foreign object is received by the second light detector.