Patent ID: 7677380
Filing Date: 2010-03-16
Classification: G07D

Abstract:
1. An optical sensing device for detecting optical features of valuable papers, comprising first and second triplex assemblies positioned in the vicinity of and on the opposite sides of a passageway for guiding the transported valuable paper, and third and fourth triplex assemblies positioned in the vicinity of and on the opposite sides of a passageway for guiding the transported valuable paper; wherein the third and fourth triplex assemblies are arranged longitudinally along the passageway behind and in parallel to the first and second triplex assemblies; one of the first and second triplex assemblies has first and second light emitting elements for emitting first and second lights, and a first light receiving element adjacent to the first and second light emitting elements; the other of the first and second triplex assemblies has a third light emitting element for emitting a third light, and second and third light receiving elements adjacent to the third light emitting element; one of the third and fourth triplex assemblies has fourth and fifth light emitting elements for emitting fourth and fifth lights, and a fourth light receiving element adjacent to the fourth and fifth light emitting elements; the other of the third and fourth triplex assemblies has a sixth light emitting element for emitting a sixth light, and fifth and sixth light receiving elements adjacent to the sixth light emitting element; the first and second light emitting elements are arranged in vertically spaced relation to and in alignment with respectively the second and third light receiving elements; the first light receiving element is arranged in vertically spaced relation to and in alignment with the third light emitting element; the fourth and fifth light emitting elements are arranged in vertically spaced relation to and in alignment with respectively the fifth and sixth light receiving elements; the fourth light receiving element is arranged in vertically spaced relation to and in alignment with the sixth light emitting element; the first light receiving element receives the first and second lights from the first and second light emitting elements reflected on the valuable paper and the third light from the third light emitting element penetrating the valuable paper; the second light receiving element receives the first light from the first light emitting element penetrating the valuable paper and the third light from the third light emitting element reflected on the valuable paper; the third light receiving element receives the second light from the second light emitting element penetrating the valuable paper and the third light from the third light emitting element reflected on the valuable paper; the fourth light receiving element receives the fourth and fifth lights from the fourth and fifth light emitting elements reflected on the valuable paper and the sixth light from the sixth light emitting element penetrating the valuable paper; the fifth light receiving element receives the fourth light from the fourth light emitting element penetrating the valuable paper and the sixth light from the sixth light emitting element reflected on the valuable paper; the sixth light receiving element receives the fifth light from the fifth light emitting element penetrating the valuable paper and the sixth light from the sixth light emitting element reflected on the valuable paper; at least one of the first, second and third light emitting elements produces an infrared ray; at least one of the fourth, fifth and sixth light emitting elements produces an infrared ray; the infrared ray received by the receiving element provides reference or basic light data for detecting an amount level of light other than the infrared ray emitting from at least one of the first, second and third light emitting elements; and the infrared ray received by the receiving element provides reference or basic light data for detecting an amount level of light other than the infrared ray emitting from at least one of the fourth, fifth and sixth light emitting elements.