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近几年,英国科学仪器研究所(Sira)设计了几种用来客观检验光学零件表面疵病的仪器。它们不仅可以检验用眼睛能轻易发现的粗划痕,而且能检验连熟练检验人员也难以发现的细道子。这里介绍的检验光学表面划痕严重程度的划痕分级器就是其中的一种。这种划痕分级器可用来评定光学零件表面上单个划痕的严重程度,从而判断零件是否符合验收标准。它主要用于检验经过光学精加工的平面,如窗玻璃、滤光片、晶体、反射镜、
In recent years, the British Institute of Scientific Instruments (Sira) has designed several instruments designed to objectively inspect surface defects on optical components. They not only check for rough scratches that can be easily spotted with their eyes, but also check the trickery even hard to find by skilled testers. One of these is the scratch classifier that examines the severity of optical surface scratches. The scratch sizer can be used to assess the severity of a single scratch on the surface of an optical part to determine if the part meets acceptance criteria. It is mainly used to test through the optical finishing of the plane, such as window glass, filters, crystals, mirrors,