IMPROVEMENTS IN, OR RELATING TO, INFRA-RED DETECTION

摘要

A system and method for analysing a material using infra-red radiation are described, along with an infra-red detector for use with the system and the method. The system (10) comprises a rectangular housing (42) to which an elongated probe (24) is attached, and includes the following parts: a spectrometer (12), an infra-red detector (14), first and second optical fibre bundles (16, 18), first and second converging lenses (20, 22), collimating lens (26), infra-red source (28), attenuated total reflectance element (44) and chopper (54). The infra-red detector includes an array of detector elements formed on the lower surface of a layer of pyroelectric copolymer material which is stretched over a rigid silicon frame, and an array of upper electrodes exposed to the infra-red radiation to be detected.