CPC Subgroup
G01N 21/896 Optical defects in or on transparent materials, e.g. distortion, surface flaws
Full Title
Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light (G01N3/00 - G01N19/00 take precedence) > Systems specially adapted for particular applications > Investigating the presence of flaws or contamination > in moving material, e.g. running paper or textiles (G01N21/90, G01N21/91, G01N21/94 take precedence) > characterised by the flaw, defect or object feature examined > Optical defects in or on transparent materials, e.g. distortion, surface flaws
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open