Inspection and measurement
We will perform distortion measurement by a collimator, smoothness measurement by an interferometer, and a transmission factor and reflectivity data measurement by a spectroscope to develop a high quality product.
Distortion measurement by a collimator
Distortion of the filter glass is measured using a collimator that generates a completely parallel light beam.
Smoothness measurement by an interferometer
Using an interferometer, the lens filter is measured whether it is smooth or not. Not only data and values are measured, but also a live-action test is performed to check performance and quality of the product.