Environmental tests of polarizers for avionics or automotive applications

Polarizers have sensitivity to temperature and humidity combination. They are also sensitive to high doses of UV exposure. To guarantee a long life of a liquid crystal display the polarizers have either to be of special quality, or there should be special means to protect them. A study related to the long term stability have been conducted on several types of high efficiency iodine based polarizers. The test results and recommendations will be presented in this paper.