Wire detection using single-slit diffraction

This paper presents a wire detection method using single-slit diffraction. A laser head generates the light beam, and an optical slit is introduced in the path of light source to a wire, so that diffraction pattern generated by the slit will be projected to the receiving screen, and irradiance loss could be observed, due to the presence of a wire. Simulation result demonstrates that the design can render certain detection sensitivity for slim wires.