9. Total Integrated Scattering (TIS)

Total Integrated Scattering is a surface quality measure indicating how much light is randomly deviating in space from specularly reflected or transmitted laser beam.

According to ISO 13696 standard term of total scattering it is defined as: -ratio of the total power generated by all contributions of scattered radiation into the forward or the backward half-space or both to the power of the incident radiation.

Backward scattering – fraction of radiation scattered by the optical component into the backward half-space.

Forward scattering - fraction of radiation scattered by the optical component into the forward half-space.

Optical front and back scattering

Optical scattering