Non-scanning type optical reading apparatus having illuminating

Details Non-scanning type optical reading apparatus having illuminating Non-scanning type optical reading apparatus having illuminating

1992-06-25

1996-01-23

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

235472, 359888, G06K 710

Patent

active

054866880

ABSTRACT:
A non-scanning type optical reading apparatus for reading patterns such as a bar code. The optical reading apparatus comprises an imaging lens for imaging a bar code as a pattern to be read, a CCD line sensor for reading the information of the image of the pattern, and a light damping mirror and/or filter that is provided between the pattern and the CCD line sensor. The central part of the light damping mirror filter is denser than the periphery to achieve a uniform distribution of light on the sensor. According to one embodiment, the filter is a bandpass filter.

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