摘要：An optical sensor consists of many optical components. In some sensors surface finish plays a major role in the performance of sensor. High performance sensors require highly polished and smooth surfaces. Average roughness of the surfaces has to be around couple of angstroms. Scattering of light from the surface indicates the roughness. In sensors like Ring Laser Gyroscopes, back scattering is major problem as its results in lock-in of the counter rotating laser beams. Surfaces here should not scatter. There is a need to measure the scattering and quantify. We propose to develop techniques to quantify scattering. A laser beam is made to fall on the surface and images of surface under test will be captured at different angles. Scattering centers will be identified and the same are marked on the image of the surface. Image processing is carried out with mat lab.
