Abstract: Transparent tablet for evaluation of motor responses furnishes the coordinates of the contact points of at least one conductive probe tip on tablet. The tablet is overlaid on its outer face by a resistive transparent film, such as tin dioxide. By the provision of a current-generating device in first and in second directions, voltage gradients are set up along the resistive transparent film in the first and second directions. The voltages picked up by the conductive probe tip at the point of contact are proportional to the distance of the point to the edges of the tablet along each of the directions. The numerical values of the point coordinates are furnished by the conversion to digital form, by an A/D converter, of the voltage.

Abstract: Electron emitter structure for field emission display, a tabular vacuum chamber confined between a rigid transparent front plate and a substantially flat electron emitting structure including a plurality of emitting elements, the residual contaminant gas molecules being removed by transversal pumping through a plurality of pores spread out on the electron emitting structure in order to reach a layer of getter material uniformly distributed over the display area. The emitting elements may be provided by Spindt emitters, sharp or serrated metallic edges or carbon nanotubes. The electron emitting structure includes upper and lower metallic layers plated over the upper and lower surfaces of an insulating plate, the latter consisting of a photo-etchable or plasma-etchable material, such as polyimide or SU8.