| 摘要 |
An optical blood analyte monitor ( 2 ) comprises a near infra-red light source and a complementary detection ( 6 ) means; a component analyser ( 12 ) having access to a chemometric model linking optical spectral features to a level of blood analyte of interest and configured to apply the model to signals received from the detection ( 6 ) means and a tilting filter arrangement ( 8 ) having a plurality of optical interference filters ( 20 a . . . e; 56 a . . . d), each filter being tiltable to vary a wavelength of incident light from the source transmitted there through. The light source comprises a plurality of light emitters ( 4 a . . . e) each being arranged to emit light along a different associated light-path ( 16 a . . . e) in which is located an associated different one of the plurality of the interference filters ( 20 a . . . e) and towards a same analysing region ( 18 ) at which a tissue volume (finger for example) containing a blood sample to be analysed is located in use. |
