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NCJRS Abstract

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NCJ Number: 113511 Find in a Library
Title: Alternative Lighting Methods of Detecting Latent Prints (From International Forensic Symposium on Latent Prints -- Proceedings, 1987, Quantico, Virginia, P 39-44, -- See NCJ-113506)
Author(s): J E Watkin
Date Published: 1988
Page Count: 6
Sponsoring Agency: National Institute of Justice/
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Document: PDF
Type: Report (Technical)
Language: English
Country: United States of America
Annotation: This article explains the use of fluorescent lighting in detecting latent fingerprints, specifying different types of light sources and discussing their individual advantages.
Abstract: Fluorescence offers a very high contrast as well as high sensitivity under favorable circumstances. This discussion identifies the properties of light needed for fluorescent print detection and surveys the development of appropriate light sources. It concludes that lasers are costly in power and money, but the light produced is ready to use. In contrast, light from lamp sources is easy to obtain, but requires troublesome collecting, collimating, and filtering. Three types of lamps currently available for fingerprint use are examined: the Unilite, the Quasar, and the Lumaprint. Areas considered include reflectors, filters, and power sources. Methods to excite fluorescent materials at the crime scene are described. Photographs, tables, graphs, and diagrams.
Main Term(s): Laser fingerprint detection
Index Term(s): Fingerprint image quality; Latent fingerprints; Lighting
Note: For microfiche, see NCJ-113506.
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