Equipment | Optical Inspection |Optical Non-contact Profilers and Measurement

Optical Non-contact Profilers and Measurement

Optical non-contact profilers are interference microscopes used to accurately measure the three-dimensional height variations on surfaces of a given test material. Optical profilers manipulate the wave properties of light entering the microscope and compare the path differences between the test subject and a reference object of a known flatness. Once light enters the optical profiler, the light beam will split, where one-half of the beam reflects the focal plane of a microscope objective for the object of interest, and the other half is reflected from the reference mirror. Interference between these two beams is then measured in order to form an interferogram from which height calculations can be obtained.