FIELD: medicine.
SUBSTANCE: invention relates to field of optical formation of papillary patterns and can be applied in forensic science for identification of personality. Device contains successively placed and optically connected source of light, optically transparent base, made in form of figure of revolution, projection optical system and reflected light receiver, connected with processing unit. Base is made in form of concave figure of revolution, whose geometrical parametres are determined by ratio (R-r)/R=0.65-0.97, where R is radius of figure of revolution generator, r is radius of minimal in area transversal section of figure of revolution.
EFFECT: invention, due to selection of form of figure of revolution surface, ensures the most complete image of finger surface.
1 dwg
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|
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|
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|
RU2311679C1 |
