Today's automotive headlights are built with transparent cover lenses. Therefore condensation of water leads to a visible optical defect. This paper presents a new approach for determination of the droplet size using colour phenomena in totally reflected light. It is based on a model of the generation of colour patterns by interference of several rays of light each multiple totally reflected inside Condensed droplets. The droplet size may be determined by the colour if the contact angle is known. Measurement of both droplet size and colour allows calculating the contact angle on transparent media. Theory and measurements will be compared.
Investigation of colour phenomena in condensed water droplets
Untersuchung von Farbphenomena in Kondenswassertröpfchen
2006
6 Seiten, 10 Bilder, 5 Quellen
Aufsatz (Konferenz)
Englisch
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Online Contents | 1995
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