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Machine translation
1. (WO1992011608) FINGERPRINT IMAGING
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1992/011608    International Application No.:    PCT/GB1991/002295
Publication Date: 09.07.1992 International Filing Date: 20.12.1991
Chapter 2 Demand Filed:    30.06.1992    
IPC:
G06K 9/00 (2006.01)
Applicants: THORN EMI PLC [GB/GB]; 4 Tenterden Street, London W1A 2AY (GB) (For All Designated States Except US).
SIBBALD, Alastair [GB/GB]; (GB) (For US Only)
Inventors: SIBBALD, Alastair; (GB)
Agent: THORN EMI PATENTS LIMITED; Central Research Laboratories, Dawley Road, Hayes, Middlesex UB3 1HH (GB).
OSBORNE, David; Thorn EMI Patents Limited, Central Research Laboratories, Dawley Road, Hayes, Middlesex UB3 1HH (GB)
Priority Data:
9027718.7 20.12.1990 GB
Title (EN) FINGERPRINT IMAGING
(FR) FORMATION D'UNE IMAGE D'UNE EMPREINTE DIGITALE
Abstract: front page image
(EN)A direct fingerprint image is formed by illuminating a transparent planar substrate (22) from one surface (26) with collimated light (20), the substrate (22) having pressed against the other surface (28) a fingerprint (30) to be imaged. Light striking the surface (26) against which ridges of the fingerprint (30) are in contact undergoes total internal reflection within the substrate (22) and causes a direct image of the fingerprint to be formed by generating fluorescent light within a planar fluorescent member (38).
(FR)On peut former une image directe d'une empreinte digitale en éclairant une surface (26) d'un substrat planaire transparent (22) avec de la lumière collimatée, l'empreinte digitale d'un doigt (30) étant appuyée contre l'autre surface (28) du substrat (22). La lumière incidente sur la surface (26) avec laquelle se trouvent en contact les crêtes de l'empreinte digitale (30) subit une réflexion totale à l'intérieur du substrat (22) et provoque la formation d'une image directe de l'empreinte digitale par la production de lumière fluorescente à l'intérieur d'un élément fluorescent planaire (38).
Designated States: CA, JP, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE).
Publication Language: English (EN)
Filing Language: English (EN)