A DEVICE FOR MONITORING EXPOSURE TO RADIATION, USE OF SUCH A DEVICE, AN ARTICLE AND A METHOD FOR MONITORING EXPOSURE TO RADIATION

摘要

A device (1) for monitoring exposure to radiation (L), particularly ultraviolet radiation, at least comprising cholesteric liquid crystal material (3) having a photo- isomerisable compound, such that during use, a light reflection band of the cholesteric liquid crystal material (3) can be modified upon exposure to the radiation to be monitored. The invention also provides a method for monitoring exposure to radiation.