The spe­cially designed blades which are attached to the instru­ment are used to make a short inci­sion in the film. Then, the depth of the layer is mea­sured with the built-in 50 fold micro­s­cope and the film is inspected for flaws.

Each of the cutt­ing tips has two bevels which are made to pre­ci­sion with the men­tioned slopes (see table). Since the slope of the cut is known, the mea­sure­ment of the hor­i­zon­tal dis­tance across this full slope (from the sub­s­trate to the top edge of the cut) is also a mea­sure­ment of true ver­ti­cal depth.

Destruc­tive Film Thick­ness
Mea­sure­ment

Cre­ate a V-shaped cut through the coat­ing down to the sub­s­trate and mea­sure width of a’ (b’), which is pro­por­tio­nal to the thick­ness a (b).

The thick­ness of mul­ti­ple-lay­ered coat­ings can be eas­ily deter­mined.

DPM 100

Dig­i­tal Pocket Micro­s­cope

Fea­tures of DPM 100 Dig­i­tal Pocket Micro­s­cope

• High res­o­lu­tion CCD-Cam­era offer­ing clear images
• Very portable and easy to use
• USB Cable con­nec­tion for the data trans­fer
• Auto Gain func­tion to adjust the light­ness dif­fer­ences
• 4 LED Illu­mi­na­tion for bet­ter view­ing
• Cap­ture but­ton to save image

Destruc­tive Film Thick­ness
The V-shaped cut from the byko-cut can be eas­ily stored as an image with film thick­ness info in mm. Also the width from the cut can be detected and recal­cu­lated to the film thick­ness of the coat­ing depend­ing on the cut-Angle.

For more infor­ma­tion on the DPM 100 Dig­i­tal Pocket Micro­s­cope see pages 221 - 223.