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. 06, 2006
Filed:
Dec. 18, 2001
Hansjorg Klock, Rubigen, CH;
Robert Jones, Cambridge, GB;
Michael Stuart Hazell, Cambridge, GB;
De la rue International Limited, Hampshire, GB;
Abstract
An optical detection device for validating bank notes has several input apertures, an imagine device (), a diffraction grating () associated with each input aperture () and a detection array (). The diffraction grating () is rotated at angle of e.g.degrees relative to the orientation of the linear detection array (). This arrangement enables the spectra of multiple points to be measured simultaneously. The angle of rotation, the pitch of the apertures () and a pitch of the diffraction grating (15.1, 15.2, 15.3) are selected in such a way that the spectra of said multiple points are contiguously mapped onto the detection array () having a single linear array of color sensitive detection pixels. The axis of the linear array is offset with respect to an optical axis () of the optical detection device.