FIELD: physics; computer facilities.
SUBSTANCE: invention concern to automation of reading and transmission to biometric information systems of images papillary patterns, in particular fingers and palms. The anamorphic system of reading PD contains a radiant source (RS) with a matrix of radiating devices, the optical system (OS) including, an objective with an elliptic aperture diaphragm and an optical device (OD) for applying of fingers and palms, and a multielement photodetector (MP). Thus one of the OD surfaces is executed refracting-spherical, protuberant outside. The MP is joined to the controller and it is canted to an optical axis. AI programm-hardware-controllable. The direction of radiation of RS in OD projects, at passage through OD in OS, on MP a place of immediate touch papillar lines with working facet OD causing major signal strength in comparison with a place free from immediate touch. The RS is involved periodically.
EFFECT: reduction of linear dimensions of optical system at simultaneous scanning papillary drawings of fingers and palm, improvement of quality of the initial data arriving in systems of identification of the person, increase of contrast of various images of papillary drawings of fingers and a palm, system depreciation.
8 cl, 11 dwg
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Authors
Dates
2009-02-20—Published
2006-12-27—Filed