Abstract: An electronic case for electronic spectacles may include a base comprising a cavity formed therein. A first spectacle retention device may be located within the cavity. The first spectacle retention device may be configured to retain spectacles. An electrical control system may be included. An electrical connector may be configured to couple the electrical control system in electronic communication with the spectacles.

Abstract: According to one aspect, the invention relates to a device for the surface diffusion of illuminated images to human scale, said device comprising a set of sensors (3) which can detect a body or other object close to the device, and a set of point light sources (2) which allow illuminated images to be diffused in response to the signals detected by the sensors. The device is characterised in that it comprises: a first set of plates or strips (1) on which point light sources and integrated circuits (4) for addressing the point light sources, either individually or in groups, are arranged in one or more lines, said integrated circuits being electrically connected in order to operate in a cascade manner in each line; and a second set of plates or strips (7) on which sensors (3) and integrated circuits (5) for addressing the sensors, either individually or in groups, are arranged in one or more lines, said integrated circuits being electrically connected in order to operate in a cascade manner in each line.

Abstract: Method of determining variations in the morphology of a borehole. It consists in measuring, as a function of the depth of the borehole, the dip and the azimuth (a.sub.1) of the borehole, the inside diameters of the borehole in two perpendicular directions, and the azimuth (a.sub.2) of a reference caliper and it is characterized in that consists in determining the eccentricity (e.sub.m), together with an eccentricity error (.DELTA.e.sub.m), the azimuth (a.sub.3) of the second caliper from the azimuth (a.sub.2), and the rotation speed (V.sub.R) of the reference caliper, and then comparing (.DELTA.e.sub.m) to a threshold value (.DELTA.e.sub.s) and (V.sub.R) to a threshold value (V.sub.S ) to determine the type of ovalization of the borehole.