METHOD FOR IDENTIFICATION OF OPTICAL SEALS Russian patent published in 2005 - IPC

FIELD: optical object identification means.

SUBSTANCE: identification element of optical seal is lit by passing optical probing emission, its optical image is projected into place of multi-element photo-detector, voltages U_n are recorded at outputs of elements of photo-detector and aforementioned signals are used to form an optical image of seal, which is recorded and then used to compare to control optical image of seal. During recording process aforementioned voltages are measured and also measured are exposition time spans appropriate for them in case of presence pot absence of identification element in optical track, and also voltages during replacement of identification element by black body and measured values are used for calculation by given method of a block of mathematical expressions, representing an optical image of seal.

EFFECT: optical image, free from influence of alternation of a parameters of optical track and photo-detector elements.

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