Comparisons between co-axial and bi-axial optical systems for time-of-flight based laser scanners

In time-of-flight based laser scanners, measurable distance and accuracy are the most important parameters to determine performances. The optical system of the laser scanner should be optimally designed since a high intensity of measured signal increases the measurable distance and accuracy. Therefore, it is important to understand how the optical component layout affects the laser scanner performances. Optical component design for co-axial and bi-axial mechanisms are considered in the paper.