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1 flo-ir berührungslos messen Aawasserstrasse 10 CH 6370 Oberdorf, NW Tel.: +41 (0) Fax: +41 (0) You have a task We have a solution

2 - 2 - What can be seen in the OCT signal Inclusson. (500 micrometer) Air inclusion (ca 250 micrometer) Small inclusion. (ca 100 micrometer) in a plastic film. Interface between two plastic layers. Interface between two plastic layers. Interface between two plastic layers. Distance in y- direction in micrometers. Distance in x- direction in micrometers. Very small inclusion (ca 20 Micrometer) in a plastic film. OCT systems differ from conventional camera systems because they show differences in the light propagation time in the form of interference phenomena and do not react to gray-value differences.

3 - 3 - Measuring with light - very fast - extremely precise - non-contact Measurement of complex geometries Recognition of air inclusions. Locating delaminations Selective measurement of layers and their thickness Smallest differences in refractive index are always clearly visible as interference signal!

4 - 4 - Good visibility - even if it is crystal clear or if it reflects! Microsupports inside a micrifluidic chip Fingerprint on a slide Micro holes in a plastic film Glass splitter in a glass 3D measurement of microfluidic channels Inclusion between two glasses Interference signals are produced on thinnest- or highly transparent layers!

5 - 5 - Do you already measure with light or still measure tactilely? Micro holes measurements Locating smallest scratches Measuring of finest contours Hole depth Hole diameter Topography in a groove Measuring of changes on a surface Visualisation of thickness differences Measuring on micro structures Unlike conventional cameras, OCT systems show differences in refractive index!

6 - 6 - OCT measurement on a coated polycarbonate plate Cross section through a stack Area of interesst in the OCT image Top view Marker of the measured spot. Gemessene Peaks 0 5 µm 10 µm 1 Siglan profile 0 1 Volume of interesst in the 3D stack Marker of the measured spot. Layer thickness in micrometer = running time of the light / refractive index of the layer penetrated by the light.

7 - 7 - OCT systems show more than visualization systems Micro hole Not continuous Inclusion Delamination Air inclusion Layer defect With OCT systems differences in refractive index are determined, not gray value differences!

8 - 8 - Measuring with light - very fast - extremely precise - non-contact Hair in an sealed seam Partial delamination Delamination OCT- Tomogramm Two very small delaminations Light signals from the layer interior Bounded particles Small failure in a sealed seam OCT systems always show clear signals regardless of the color of the measuring object!

9 - 9 - Full film thickness measurement on finished plastic films Winding station Full film thickness measurement Layer thickness control on films (in line or off-line) Performance data of the system: Test width From 10 mm up to more than 2 m Test line distance 1 mm to a few cm Lateral resolution in x, y plane 100 μm Resolution in the z direction (depth resolution) 20 μm Product speed 150 mm / s Space requirement (width) 150 mm Measuring distance (object sensor distance) from 20 mm 10 OCT heads in one line OCT systems provide significant interference signals at each layer transition in multilayer films.

10 Cracks, bumps and edge defects Unevenness on the victorious plane is visible with the OCT method. The OCT image below in the center shows errors in the flatness of the victorian plane. The picture gallery on the left shows differences in the thickness of thermally formed components. What is not visible with conventional cameras is shown safely and reliably with modern OCT_ systems. The crack in the OCT image above is only 10 micrometers wide. Is it a scratch, a crack or just a discoloration? With the OCT method such questions can be answered exactly. The OCT image above shows a finest unevenness on a surface, the OCT image in the lower left shows thickness deviations in the μm range and the picture in the lower right shows a scratch.

11 In line testing of sealing seams Sealed moldings Proofed moldings Sealing seam inspection in the running production Performance data of the system: Test width From 10 mm up to more than 2 m Test line distance 1 mm to a few cm Lateral resolution in x, y plane 100 μm Resolution in the z direction (depth resolution) 20 μm Product speed 150 mm / s Space requirement (width) 150 mm Measuring distance (object sensor distance) from 20 mm Sensor: ASP array (active sensor pixel array) Dynamic Up to 4 * = pixels 10 6 fps Test equipment with the the OCT elements Test equipment with the the OCT elements OCT systems provide information on the quality of layer systems or peel off films.

12 Inspection of a seal seam in the running production. Release of the top layer. Sealed cover layer Sealing zone characterization Air bubbles with a diameter of a few microns between two layers. Particles in the seal seam. Sealed cover layer OCT measurements provide extremely accurate results at maximum speed. \\WDMYCLOUD\Public\Server\flo-ir\Broschüren\Broschüren fertig korrigiert\anwendungsbeispiele aus der Praxis_korr_nd_E.docx