Diffractive optical element based sensor for surface quality inspection of concave punches.
Optical surface quality of concave shaped punches was investigated with a diffractive optical element based sensor. Image information of the present sensor was studied for the purpose of surface roughness and reflectance inspection. The robust sensor is proposed for off-line optical inspection of concave punches.
Hyvärinen
V
V
Department of Physics, University of Joensuu, Finland.
Silvennoinen
R
R
Peiponen
K
K
Niskanen
T
T
D055095:Optics and Photonics; D013499:Surface Properties; D013607:Tablets; D013678:Technology, Pharmaceutical
D013607:Tablets