14.10. Glossmeters for the measurement of gloss from flat and curved objects

Public examination of a doctoral dissertation in the field of physics

Doctoral candidate: M.Sc. Kalle Kuivalainen 

Date and venue: 14.10.2011 at 12 noon, M100, Metria, Joensuu campus 

ABSTRACT 

The focus of this thesis is the development of a diffractive optical element (DOE) based glossmeter (DOG). The original DOG and a new generation of DOGs are presented in this thesis. The experimental part of this thesis is divided into two sections, namely flat and curved surface gloss measurement. The flat surface inspection includes gloss measurement from cold-rolled stainless steel plates in a laboratory and on-line measurements in a printing line with new generations DOGs.

A single sensor which can measure both gloss and surface roughness is also presented in this section. The measurements for this sensor were performed for a metal surface roughness standard. The DOGs for the curved surface were modified from the DOGs used for the flat surface and two statistical parameters for the curved surface gloss evaluation are presented here. 

The measurements for the curved surface DOGs were performed with unpainted and painted aluminium convex and concave sample series. The curved surface gloss measurement also includes one application where a latent fingerprint was detected on a ballpoint pen surface with the DOG. 

The doctoral dissertation of Kalle Kuivalainen entitled “Glossmeters for the measurement of gloss from flat and curved objects” will be examined at the Faculty of Science and Forestry. The opponents in the public examination are Professor Jouko Peltonen from Åbo Akademi University and Professor Anssi Mäkynen from University of Oulu. The custos is Professor Kai-Erik Peiponen of the University of Eastern Finland.

Photo available for download at http://www.uef.fi/vaitoskuvat

Contact: Kalle Kuivalainen, kalle.kuivalainen@uef.fi, tel. +358 50 569 0529

Publishing year: 2011

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