[21p-P03-1~5] 3.3 Biomedical optics (formerly 3.4)

[21p-P03-2] Examination of fluorescence lifetime imaging of latent fingerprints using a 532 nm pulsed laser

〇Hidetoshi Kakuda¹, Norimitsu Akiba¹, Kazuhito Hibino², Ken'ichi Tsuchiya¹, Kosuke Tanabe¹ (1.NRIPS, 2.NPA)

Keywords:fluorescence lifetime imaging, latent fingerprint, visualization

Fingerprint is used for individual identification. One of the methods to visualize latent fingerprints in crime scenes in a non-contact and non-destructive manner is to excite latent fingerprints by lasers and then to photograph fluorescence emitted from them. Not only latent fingerprints but also backgrounds often emit fluorescence where a background means an object on which latent fingerprints were left. It tends to be difficult to visualize latent fingerprints when background fluorescence is strong. We will report an examination result of applying fluorescence lifetime imaging to such samples using a 532 nm pulsed laser.