DEVICE FOR MEASURING OPTICAL CHARACTERISTICS OF DOCUMENT Russian patent published in 2012 - IPC G06K9/00 G07D7/00 

FIELD: information technology.

SUBSTANCE: device contains sources of radiation located together with receivers in interleaving order, and optical conductor which passes through both emitted and reflected from a document radiation, where radiation receivers can have angle of vision being essentially smaller than angle of divergence of radiation emitted by light source, contain lens and/or diaphragm to constrict field of vision. Additional receivers can be provided to capture passing radiation. Sources of radiation are distributed in groups with radiation of various spectra and combined in clusters.

EFFECT: simplification and downsizing of structure while providing high efficiency of radiation sources utilisation.

10 cl, 5 dwg