The present general-purpose ILL thermal-neutron Laue diffractometer, VIVALDI [1], has demonstrated in a spectacular manner the advantages of the Laue technique with a large solid angle of detection, especially for small or weakly-scattering crystals, but is limited in some applications by the slow read-out of its image-plate detector. By contrast, on the CCD-based flat-plate Laue diffractometer OrientExpress [2], the 1680 x 1320 pixel image is read out in less than 0.2 sec.