METHOD TO READ OPERATIONAL LABELS WITH SCANNER CREATING ADDITIONAL SCATTERED LIGHT FLOW FOR EXPANSION OF SCANNER READING ZONE Russian patent published in 2013 - IPC G06K7/10 G06K9/22 

FIELD: information technologies.

SUBSTANCE: method includes creation of a light flow with a lighting module of a scanner due to generation of a flow with sources of directed and scattered light. The zone of scattered light flow is increased due to application of an additional scattering cone-shaped light ring on a scanner, and light flows interact in accordance with a certain logic: a light flow (pos. 11 and pos. 12) is reflected from the surface with a label and gets via an optical system to a light-sensitive sensor, afterwards the field lighting level (pos. 11) is compared with the field lighting level (pos. 12). On the basis of comparison of lighting levels of these two light fields, the necessary control signals are generated for sources of light, which are arranged inside a lighting chamber (pos. 13) and outside the lighting chamber (pos.6), thus balancing the lighting of the common light field (pos. 12) and providing for high quality of scanning.

EFFECT: expanded zone of scanner reading due to creation of an additional scattered light flow with a lighting module of a scanner.

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