Gloss inspection of metallic products by diffractive optical element based sensor

• Autorzy: Myller K. , Silvennoinen R. , Peiponen K.
• Języki publikacji: EN

Abstrakty

EN

A sensoe was developed to measure the glos of curved metal objects. The crucial part of the sensor is a diffractive optical element (DOE). The advantages of the present sensor are non-contact measurement mode, normal incidence of the probe light, and possibility to measure gloss of curved surfaces. The sensory yields information also on the surface texture, such as finishing marks, of curved metal surfaces. The operation of the sensor was verified by measuring draw-off pipes of water cranes, which were obtained from metal industry.

Słowa kluczowe

EN

gloss; curved metallic products; surface texture; diffractive optical element (DOE)

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2003
• Tom: Vol. 11, No. 1
• Strony: 35--38
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Myller K.

• University of Joensuu, Department of Physics, P.O. Box 111, FIN-80101, Joensuu, Finland

autor

Silvennoinen R.

• University of Joensuu, Department of Physics, P.O. Box 111, FIN-80101, Joensuu, Finland

autor

Peiponen K.

• University of Joensuu, Department of Physics, P.O. Box 111, FIN-80101, Joensuu, Finland

Bibliografia

• 1. ASTM Standards on Colour and Appearance Measurement, fourth edition, Philadelphia, 1994.
• 2. International Organization for Standardization, "Paints and varnishe - determinations of specular gloss of non-metallic paint films at 20°, 0°, and 85°", ISO 2813, 1994.
• 3. R.S. Hunter, "Methods of determining gloss", Proc. ASTM 36, Part II, 783-806 (1936) and R.S. Hunter, The Measurement of Appearance, Wiley, New York, 1975.
• 4. L.A. Wetlaufer and W.E. Scott, "The measurement of gloss", Industrial and Engineering Chemistry 12, 647-652 (1940).
• 5. W. Budde, "Stability problems in gloss measurement", J. Caating Technology 52, 44-48 (1980) and "Polarization effects in gloss measurements", Appl. Opt. 18, 2252-2257 (1979).
• 6. P. Beckmann and A Spizzichino, The Scattering of Electromagnetic Waves from Rough Surfaces, Pergamon Press, Oxford, 1963.
• 7. R. Silvennoinen, J. Rasanen, M. Savolainen, K.E. Peiponen, J. Uozumi, and T. Asakura, "On simultaneous optical sensing of local curvature and roughness of metal surface", Sensors and Actuators A51, 117-123 (1996).
• 8. R. Silvennoinen, K.E. Peiponen, and T. Asakura, "Diffractive optical elements in material inspection", in International Trends in Optics and Photonics ICO IV, Heidelberg, Springer, (1999).
• 9. J. Räsänen and K.E. Peiponen, "On-line measurement of the thickness and optical quality of float glass with a sensor based on a diffractive element", Appl. Opt. 40, 5034-5039 (2001).
• 10. M. Nieto-Vesperinas, Scattering and Diffraction in Physical Optics, Wiley, New York, 1991.
• 11. J.N. Latta, "Computer-based analysis of hologram imagery and aberrations. I: Hologram types and their nonchromatic aberrations", Appl. Opt. 10, 599-608 (1971).
• 12. J.N. Latta, "Computer-based analysis of hologram imagery and aberrations. II: Aberrations induced by a wavelength shift", Appl. Opt. 10, 609-618 (1971).