Method and apparatus for reading two-dimensional bar code symbols with an elongated laser line

摘要: A plurality of the areas different light reflectivity a bar code symbol, or like, are simultaneously illuminated, using, e.g., beam laser that has an elongated cross-section. The is swept over symbol in direction transverse to dimension illuminated region so two-dimensional area time, until read. reflects from imaged on linear sensor array, which then scanned read out produce signals representative spatial intensity variations along path field view.