Data symbol reader having an optical system

Details Data symbol reader having an optical system Data symbol reader having an optical system

1997-09-18

2000-12-12

Bella, Matthew C.

Image analysis

Image sensing

382313, 235472, 356123, G06K 700

Patent

active

061609250

ABSTRACT:
A non-contact type data symbol reader is provided which includes a light projecting system for projecting an optical image defining an area capable of being read onto a readout surface. When an infocus image is formed on the readout surface by the light projecting system, the data symbol reader is being held at a distance from the readout surface where an infocus image of the symbol to be read is obtained.

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"Optical System for Uniform Light Distribution" Cunningham et al. IBM Technical Bulletin vol. 18. No. 12 May 1976.

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