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:
Dec. 26, 2006
Filed:
Dec. 27, 2004
Leong Keey Seah, Singapore, SG;
Murukeshan Vadake Matham, Singapore, SG;
Lin Seng Ong, Singapore, SG;
Zhixia Chao, Singapore, SG;
Dinish Unnimadhava Kurup Soudamini Amma, Singapore, SG;
Sock Koon Ong, Singapore, SG;
Leong Keey Seah, Singapore, SG;
Murukeshan Vadake Matham, Singapore, SG;
Lin Seng Ong, Singapore, SG;
Zhixia Chao, Singapore, SG;
Dinish Unnimadhava Kurup Soudamini Amma, Singapore, SG;
Sock Koon Ong, Singapore, SG;
Nanyang Technological University, Singapore, SG;
Abstract
The present invention relates to a method and apparatus for clearly imaging samples such as fingerprints on substrates of forensic samples. The present invention overcomes the problems of the Laser-Induced-Fluorescence (LIF) technique to distinguish fluorescence from the sample from that of the substrate. The method of the present invention uses either a homodyne- or a heterodyne-assisted phase resolving method, or both, to suppress the contribution of the substrate fluorescence. The resulting image of the sample will then be sufficiently clear for forensic purposes. The present invention may also be used on histological and biochemical samples to visualise latent images.