OPTISKT SENSORELEMENT AV FAST MATERIAL FOR AVKENNING AV FYSIKALISKA STORHETER, SASOM TRYCK, VILKET EXCITERAS OPTISKT OCH AVGER FOTOLUMINISCENS

摘要

The present invention relates to an optical sensor element of a solid material for sensing physical quantities such as pressure, which element is excitable to emit photoluminescence on excitation which constitutes a measure of the quantity being sensed. The sensor element comprises a diaphragm which consists of at least two layers applied to an apertured substrate, at least one of which layers has luminescent properties. The luminescence may be sensed by means of at least one optical fiber.