| 摘要 |
Bar code imagers and methods of operating bar code imagers are described herein. One method includes illuminating a bar code with a first illumination beam provided by the bar code imager device, wherein the first illumination beam has a first wavelength, and illuminating the bar code with a second illumination beam provided by the bar code imager device, wherein the second illumination beam has a second wavelength that is different than the first wavelength. |
