IR imaging study on heater performance of outside rearview mirrors for automobiles

Hsin Wang; Todd England

doi:10.1117/12.669837

18 April 2006 IR imaging study on heater performance of outside rearview mirrors for automobiles

Hsin Wang, Todd England

Proceedings Volume 6205, Thermosense XXVIII; 62050L (2006) https://doi.org/10.1117/12.669837
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

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.

Citation Download Citation

Hsin Wang and Todd England "IR imaging study on heater performance of outside rearview mirrors for automobiles", Proc. SPIE 6205, Thermosense XXVIII, 62050L (18 April 2006); https://doi.org/10.1117/12.669837

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