Patent ID: 8066189
Filing Date: 2011-11-29
Classification: G06K

Abstract:
1. A code symbol reading apparatus, comprising: a case having a front surface facing an image sensing area, a concave formed on the front surface and having a quadrangular pyramid wall, a cross-sectional area of which is reduced toward a bottom, and an opening on the bottom of the concave; an area image sensor provided inside the case to capture an image in the image sensing area through the opening; an illumination device provided inside the case so as not to interfere with capture of the image by the area image sensor to illuminate the entire image sensing area; a photoelectric converting unit converting an output of the area image sensor into an electric image signal; an image processing device extracting an image signal of a code symbol from the electric image signal obtained by the photoelectric converting unit, and analyzing the extracted image signal, and outputting a product code; and a lens provided inside the case to form the image on the area image sensor with a depth of field that allows the image processing device to obtain a resolution to analyze the code symbol included in the image signal; wherein a lens side limit position of the depth of field corresponds with the position of the front surface of the case.