A new type of Raman hyperspectral imager based on Bragg tunable filters was developed by Photon etc. and the University of Montreal. With efficiency up to 90% and high spectral and spatial resolutions, this technology dramatically reduces the acquisition time, allowing for non-destructive molecular analysis with high sensitivity. The principle of this novel Raman hyperspectral imaging system and the preliminary images of a Si/Ti structured wafer have been presented at SPIE Photonics West 2012.