Optical sensor for measuring the deformation during the time of a flat structure of a deformable

摘要

The present invention relates to the measurements relating to the deformation of the flat surfaces of large dimensions which are exposed to the environmental conditions, which could alter their planéité.le measuring device according to the invention comprises an optical laser source emitting a conical mirror disposed on the surface to be measured, in a reference point, arranged to form an optical plane of reference whose orientation with respect to the plane of the antenna is known. It also comprises the lengths of optical sensors, transparent to radio waves, distributed over the surface of the antenna, each sensor being configured so as to intercept the optical beam forming the reference plane and to supply to the processing means, an optical signal as a function of the zone of the sensor with the optical beam intercepted. The variation in the position of the interception point on the sensor makes it possible to measure the variation in position with respect to the optical plane, the point of the surface on which it is positionné.elle more particularly applies to the measurements of the mechanical deformations affecting the radiating surface of the electronic scanning radar antenna of large size.