Optical Microscopy

摘要

Optical(light)microscopy is a powerful aid in defect and problem identification and root cause analysis.The author considers it the best single tool in problem solving.This article describes the main types of magnifying devices used in the coatings industry,including low magnification lenses,stereomicroscopes,and compound microscopes.It discusses reflected and transmitted light microscopy and the use of different kinds of illumination,particularly bright field and dark field.It reviews specific applications,including the examination of surfaces,fibers and other panicles,cross sections,and liquids.Ancillary equipment such as cameras,hot and cold stages,and reticules(reticles)are mentioned.The final word is that as useful as the microscope is,users should be careful in drawing conclusions strictly from what they see.You can be fooled!