Hyper-spectral images

In the context of this project and of a collaboration between the Interuniversity Microelectronics Centre (IMEC) and the RMA, taking into account the very selective properties of the material reflectivity, it has been possible to demonstrate the capabilities of wavelength tuning for discriminating different materials. Very narrow wavelength bands have been used in laboratory experiments. Examples of results are given on the figures below. Fig.(7) shows the used test box, filled with sand. On the sand surface a plastic foil, an integrated circuit and a piece of metal have been placed. On fig.(8), from left to right with increasing wavelength, one sees appearing first the plastic foil, afterwards the integrated circuit and finally the piece of metal [9].

  

Figure 7: Hyper-spectral imagery : test box

  

Figure: 1.00-1.05 $\mu m$ (plastic) - 1.10-1.15 $\mu m$ (IC) - 1.7-1.75 $\mu m$ (metal)