The theory on the scattering of electromagnetic waves based on Beckmann's Kirchhoff Approximation was considered the incident light beam as the Gaussian beam in the computer simulation. In this analysis, the roughness in fine scratches was not cosider...
The theory on the scattering of electromagnetic waves based on Beckmann's Kirchhoff Approximation was considered the incident light beam as the Gaussian beam in the computer simulation. In this analysis, the roughness in fine scratches was not cosidered because the average roughness was very small compared with the size of scratches. The experiments were followed by the image processing system attached to the CCD camera. The experimental results from the various profiles of scratches were in close agreement with the computer simulations for triangle scratches of the same depth and width especially, in the zero - and first order scattering intensity and scattering angle.