This thesis first presents the development of the SL sensory system and the extensive experiments to verify the use of the SL sensory system for measuring macro-scale 3D parts. This thesis further presents the development of a SL sensor system for Micro-scale applications. A novel calibration method for micro-scale applications is presented to determine the overall SL system calibration parameters. The method includes a novel calibration model which explicitly considers the microscope lenses parameters for the hardware components (camera and projector) as well as addresses the limitation of narrow DOF behaviour of these lenses. The latter is achieved by incorporating an image focus fusion technique. The proposed approach is implemented and tested on a designed SL system. The measurement ability of the SL sensory system was provided by measuring micro-scale features. The measurements results demonstrate great potential for using this sensory system in obtaining 3D information of micro-scale complex parts.