| 摘要 |
A contact image scanning module having multiple light sources. The contact image scanning module employs two light source groups of different properties and a switching control circuit that controls the two light sources to provide different scanning speeds when scanning different objects. The light sources shine light on the object to be scanned and generate a reflected image. At least a lens element is used for receiving the reflected image and for generating a focused image. At least an optical sensor is employed for receiving the focused image and for converting the optical signals into electronic signals. The printed circuit board is installed on the housing. The contact image scanning module is installed in the housing to form a contact image scanner.
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