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|for glass tubes|
|for image acquisition|
Commonly the quality of varnish is classified by its tolerance against scratches. To that purpose sample plates are varnished and different scratches are applied by a knife, pressed on the sample plate with varying force. The scratch detector allows a classification of the scratches similar to the usual human inspection. Compared with this state of the art inspection, it allows an objective, high precision and fast classification. The sensor is a combination of a special line projector and a high precision intensity detector. The samples are moved through the measurement field. If the scratches are in the measurement field, their visibility is characterised by the measured intensity.
Optionally a further characterisation of the scratches is possible by a measurement of the angle of visibility. To that purpose, a rotation of the sample plate is performed automatically, if a scratch is in the centre of the measurement field. The measured intensity diagram is evaluated to characterise the angular visibility.
If you are interested in further information, a demonstration, an adaptation of this sensor or a development of a solution of your measurement problem, please contact:
firstname.lastname@example.org or write or phone to:
OPOS Optical On Line Sensors
D-76187 Karlsruhe / Germany
Tel +49 (721) 971305-0
Fax +49 (721) 971305-1
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