Abstract: A non-contact optical metrology system to measure simultaneously the relative piston and the relative inclination in two axes between two low curvature reflective surfaces using partially coherent light interferometry. The system creates an interference pattern with partially coherent light from the linear phase change induced by a double prism system or equivalent, which allows the measurement of the relative piston and the inclination in two axes between the reflective surfaces. The relative piston between the mirrors is measured from the position of the interference pattern, the relative inclination in one axis from the distance between the fringes, and the relative inclination in the other axis from the inclination of the fringes. Relative piston measurements and relative inclination measurements in two axes are decoupled and can be extracted with simple morphological operations, without the need for marginal processing algorithms.

Abstract: A flexible coupling between two shafts. The flexible coupling includes a spacer element inserted between an actuating shaft or a drive shaft and an actuated shaft or a load shaft. The flexible coupling includes an assembly of articulated connecting rods at both points of connection. The articulated connecting rods respectively linking the two elements to be connected. All of the connecting rods on both ends being articulated in ball joints used to facilitate the rotation of the connecting rods in any direction.

Abstract: An integrated system for precision actuation and support for large mobile structures, such as large telescopes, wherein an actuation is integrated on the basis of linear motors located in each of the frames that support the mobile structure on another fixed structure, the support of said frames on the fixed structure being carried out by means of hydrostatic feet. The connection between this frame and the driving structure is made via a flexible kinematic connection that permits relative movements between both (frame and structure), such that the mechanism is only affected in its operation through the small-scale deformations of the track via which it circulates, and not through the large-scale deformations of the structure.

Abstract: A flexible coupling between two shafts, including a spacer element inserted between the actuating shaft or drive shaft and the actuated shaft or load shaft, and an assembly of articulated connecting rods at both points of connection (between the drive shaft and the spacer element and between same and the load shaft), said articulated connecting rods respectively linking the two elements to be connected, being tangentially arranged in relation to the coupling shaft and angularly spaced around same, a circumferential phase shift of 60°, all of the connecting rods on both ends being articulated in ball joints used to facilitate the rotation of the connecting rods in any direction, so that the coupling can adapt itself to all of the potential disalignments that may occur, both radially and axially, or When there is play between the spacer and the load, since, on the opposite side, an axially arranged connecting rod prevents the occurrence of axial play between same.

Abstract: An integrated system for precision actuation and support for large mobile structures, such as large telescopes, wherein an actuation is integrated on the basis of linear motors located in each a the frames that support the mobile structure on another fixed structure, the support of said frames on the fixed structure being carried out by means of hydrostatic feet. The connection between this flame and the driving structure is made via a flexible kinematic connection that permits relative movements between both (frame and structure), such that the mechanism is only affected in its operation through the small-scale deformations of the track via which it circulates, and not through the large-scale deformations of the structure.