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APPLICATION

Even when using state-of-the-art scanners, in many applications it is necessary to use matting agents to achieve good contrast values and thus precise measurement results:

a) Transparent parts
Optical metrology relies on light emitted from the scanner reflecting off the surface of the part being scanned back into the scanner's sensor. However, in the case of a transparent surface, the light passes through the surface instead of being reflected from it. As a result, the scanner cannot detect the surface structure.

b) Reflective parts
In the case of reflective or specular surfaces, the light beam is emitted in focused rather than in diffusely reflected back. Thus, it is not possible for the scanner to capture the surface.

c) Deepenings

If the object being scanned has pronounced indentations, the scanner will receive a reflection from the walls of the indentation. This results in a disturbance of the light pattern, which shows up in the scan as "artifacts" or erroneous data.

d) High quality and accuracy

For the most accurate and high quality measurements, a scanning spray should be used to eliminate possible interfering factors such as differences in the reflectance property, texture and/or color of the object to be scanned. The use of scanning spray creates a matte, white and homogeneous coating that reduces reflections and other inhomogeneities, thus creating excellent scanning conditions.

TDS AND SDS

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