Optical symbol reading device

Details Optical symbol reading device Optical symbol reading device

G - Physics

06

K

G06K 9/20 (2006.01) G06K 7/10 (2006.01)

Patent

CA 2273128

For receiving clear image data of symbols applied to the front surface or back surface of an article that is moved by, for example, a conveyor and for which the reading distance is constantly changing, a symbol reading device is provided with an image data input focus point control section that outputs position data of the article from a front surface/back surface position detector to an image data input focus point modifier such that the focus point of a camera or waist position of a laser beam for image data input can be constantly matched to the front surface or back surface of the article.

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