A hand held data collection device, such as a bar code scanner, portable data terminal, transaction terminal, or bar code verifier, containing at least one light-emitting diode that has been modified to improve the efficiency of light energy transmission. First, we acquire a set of images of the scene, wherein each image in the set of images includes an object having a blur associated with a point spread function forming a set of point spread functions, wherein the set of PSFs is suitable for null-filling operation. actuator width, and ink temperature. The system is designed to ensure operation reliability and environmental compatibility.