Scratch/Dig measurement systems from Savvy Optics and Dioptic have begun life looking at flat surfaces up to 100mm square or 45mm diameter respectively.
Recent advances (through demand) now allow for measurements to be made over large flat areas using the SavvyInspector SIF-16 which can cover an area of 200mm x 400mm. On parts that larger, full part mapping is essential. The new “autoscan” feature allows unmanned scanning and documentation of the entire optical surface as the system steps and photographs the entire part in 9 x 12 mm position labelled images and puts all images in a folder for review by an inspector.
The ARGOS system from Dioptic can now measure curved surfaces also. They have shown that they can measure a 1” diameter plano-convex lens of focal length of f = 150mm using a 4° tilted camera setup. This method is fast and less prone to errors.
The ARGOS system can also measure edge chips and coating holes. It can also be automated for high throughput and productivity. There is also a version for measuring fibre cable end caps.
The surface recognition performed by ARGOS recognises the tiniest defects during a running production process. The detection device for the surface recognition shows holes down to 4 µm and scratches that are as small as 1 µm wide. In addition to holes and pits, other recognisable surface defects include sleeks, streaks, coating defects, orange skin, bubbles and inclusions in the material that are close to the surface, grey coloration/blurriness and damage on the edges. All defects are shown on the screen.
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