Abstract: A deformable mirror comprises a deformable membrane extending at rest in a first plane and having a reflecting front face and a back face opposite the front face, a supporting structure, an actuator having a first and second end, the first end fixed to the supporting structure, the second end displaced relative to the first end on a first axis substantially at right angles to the first plane to exert, on the back face, an axial load on the first axis, to locally deform the deformable membrane. The mirror comprises a plate that is substantially flat in a second plane substantially parallel to the first plane, positioned between the actuator and deformable membrane, linked to the back face and deformed when the actuator exerts the axial load, and the plate is rigid in the second plane to take up loads applied to the mirror in the second plane.

Abstract: A deformable mirror comprises a deformable membrane extending at rest in a first plane and having a reflecting front face and a back face opposite the front face, a supporting structure, an actuator having a first and second end, the first end fixed to the supporting structure, the second end displaced relative to the first end on a first axis substantially at right angles to the first plane to exert, on the back face, an axial load on the first axis, to locally deform the deformable membrane. The mirror comprises a plate that is substantially flat in a second plane substantially parallel to the first plane, positioned between the actuator and deformable membrane, linked to the back face and deformed when the actuator exerts the axial load, and the plate is rigid in the second plane to take up loads applied to the mirror in the second plane.

Abstract: A honeycomb structure comprises a front part and a rear part. The front and rear parts are honeycomb structures composed of a skin and of stiffeners as a single component, the stiffeners being formed of intermeshing blades oriented substantially perpendicularly to said skin. The two parts comprise protuberances on the stiffeners on the face opposite to the skin and these protuberances are disposed on the front and rear parts in such a manner that each protuberance of the front part is located opposite a protuberance of the rear part when the two parts are superposed. The two parts are assembled by attachment devices into which two opposing protuberances are inserted.

Abstract: A honeycomb structure comprises a front part and a rear part. The front and rear parts are honeycomb structures composed of a skin and of stiffeners as a single component, the stiffeners being formed of intermeshing blades oriented substantially perpendicularly to said skin. The two parts comprise protuberances on the stiffeners on the face opposite to the skin and these protuberances are disposed on the front and rear parts in such a manner that each protuberance of the front part is located opposite a protuberance of the rear part when the two parts are superposed. The two parts are assembled by attachment devices into which two opposing protuberances are inserted.