Surface defects of optical components
Surface defects of optical components, often referred to as "surface finish" or "surface defects", are indicators that describe the number and size of pitting, scratches, and edges allowed on a polished surface. In the imaging optical system, the quality of the component surface directly determines the imaging performance of the system, in the field of strong laser and semiconductor applications, when the component surface quality is not good, it will lead to the situation that the optical system can not be used, therefore, it is very necessary to clarify the definition and determination method of the component surface defect. However, in practice, there are many standards for determining surface defects, and the definitions of each standard are not uniform, which brings some confusion to the actual work of optical practitioners. In view of this situation, this paper from the 1185-1974 old national standard, the United States military standard and the new national standard with reference to ISO 10110 three standards, introduces their specific content, as well as the approximate correspondence between each other, so as to help you in the actual work can better identify and control the surface defect index of the component.