Abstract

The method is based on light coming through a first slit (light source), being converted to parallel light through a first lens (collimator), reflected at the surface of the test piece, focussed at a combed sliding shutter through a second lens (condensing lens). The signal measured by a photo-receiver behind the shutter is a measure of image clarity. Optical evenness of the test piece is shown by the ratio of the longitudinal and transverse values when the shutter is appropriately slid.


General information 

  • Status
     : Withdrawn
    Publication date
     : 1992-10
  • Edition
     : 1
    Number of pages
     : 5
  • Technical Committee
     : ISO/TC 79/SC 2 Organic and anodic oxidation coatings on aluminium
  • ICS
     :
    25.220.20 Surface treatment

Life cycle

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