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Proceedings Paper

IR imaging study on heater performance of outside rearview mirrors for automobiles
Author(s): Hsin Wang; Todd England
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Paper Abstract

Adhesive bonded electrical heaters have been used in outside rearview mirrors of automobiles in order to act as defrosters. Entrapment of air pockets between the heater and the mirror can affects the performance and structural integrity of the mirror assembly. Since painting over the mirror is not an option in the production environment, the biggest challenge for IR imaging is to minimize surface reflection. Looking through a smooth, highly reflective first-surface mirror and a 2 mm thick glass without picking up other heat sources in the room, such as people, electronics equipment and the camera itself, requires careful planning and effective shielding. In this paper, we present our method of avoiding mirror reflection and IR images of the heated mirror in operation. Production heaters and heaters with artificial defect were studied. The IR imaging method has shown to be an effective tool for heater quality control and performance studies.

Paper Details

Date Published: 18 April 2006
PDF: 7 pages
Proc. SPIE 6205, Thermosense XXVIII, 62050L (18 April 2006); doi: 10.1117/12.669837
Show Author Affiliations
Hsin Wang, Oak Ridge National Lab. (United States)
Todd England, Delbar Products Inc. (United States)


Published in SPIE Proceedings Vol. 6205:
Thermosense XXVIII
Jonathan J. Miles; G. Raymond Peacock; Kathryn M. Knettel, Editor(s)

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