METHOD OF DACTYLAGRAPHIC IDENTIFICATION OF HUMAN PERSONALITY Russian patent published in 2009 - IPC A61B5/117 

FIELD: personal utensils.

SUBSTANCE: in dactylographic identification of human personality probing is conducted by means of low-coherent optical radiation. Wave length is selected in the near IR range of 750-1200 nm. Probing is conducted by splitting of the radiation into two bundles - measuring and reference ones. Measuring bundle is fixed at the surface of the finger pads; reflected back radiation is mixed with reflected radiation from the reference bundle on the image-storage device. Regimen of layer-by-layer scanning of the measuring bundle by two transverse coordinates (x, y) for each of the set adjustments of the optical length in the reference bundle is selected. Optical length is discretely changed in the reference bundle by minimal value Δz, detected by the length of longitudinal coherency of the radiator ΔL_c. Intensity of the reflected from the finger-pads optical radiation is measured at the depth of skin out of the set volume of coherency, calculated as the product ΔL_c times focal spot dimension of the optical bundle D. Three - dimensional papillary structure of the surface of the tested skin of the human fingers, along with the intensity level of the reflected back optical radiation from the basal layer of epidermis and L depth of its position against stratum comeum of the finger-pads.

EFFECT: method improves quality of dactylographic identification of human personality on the base of non-contact detection of three-dimensional structure of the papillary pattern of fingers or the palm of the human.

2 cl, 6 dwg