System and method for providing diffuse illumination in a symbology reader

作者: Carl W. Gerst , William H. Equitz , Laurens Nunnink

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摘要: An illumination system and method for use in a handheld symbology reader that employs grid of reflecting elements applied to transparent plate adapted project highly diffuse uniform on subject. The defines geometry with large number spaces between through which an image the subject can be acquired. A light source array is configured into at right angle via pipe having distal beveled edge or side projecting sources. Another may employed illuminate second chamfered create low-angle illumination.