Light collection systems in electro-optical readers

Registers – Coded record sensors – Particular sensor structure

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23546206, G06K 710

Patent

active

059230215

ABSTRACT:
An optical scanner for reading indicia of variable light reflectivity, such as bar code symbols, having a light source for producing a light beam for scanning a target; a sensor for collecting the reflected light from the target; and various light collection systems, including a louver formed from an array of thin slats positioned adjacent to the sensor so that light directed along substantially only one angle reaches the sensor, as well as imaging/diffusing optical systems.

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patent: 5585615 (1996-12-01), Iwanami et al.
patent: 5600116 (1997-02-01), Seo et al.

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