Device for protecting optical and/or electronic apparatuses, space telescope comprising said device, and device for removably occluding an aperture

1. Protective device for optical and/or electronic apparatuses wherein the device is provided for removably closing an aperture, through which apparatuses may be accessed, the device being such as to achieve a first and second operating configuration, for allowing or inhibiting, respectively, access to apparatuses through said aperture, said protective device comprising:

a supporting structure comprising at least one supporting beam, which is transversely positioned with respect to said aperture;

a plurality of covering elements comprising at least a pair of elements, each covering element of said pair of elements having an internal lateral edge which is rotatably coupled to the supporting beam and an opposed external lateral free edge;

actuation means for rotating the covering elements of said pair of elements about the supporting beam between a first and second angular position, in order for the device to attain the first or second operating configuration, respectively, wherein, in the second operating configuration, the covering elements are such as to define, together, a screen for said aperture; and

an inflatable stiffening system, which may be activated for stiffening the screen in the second operating configuration.

2. Protective device according to claim 1 , comprising a plurality of said supporting beams and a plurality of pairs of covering elements, wherein each pair comprises covering elements, which are rotatably coupled to a respective beam.

3. Protective device according to claim 2 , wherein said aperture is a circular aperture and wherein said supporting beams are radially positioned with respect to said aperture.

4. Protective device according to claim 3 , wherein the supporting means moreover comprise a central supporting element, which is axially positioned with respect to said aperture, and a tubular collar, surrounding said aperture, wherein said supporting beams extend from said central supporting element to said collar.

5. Protective device according to claim 1 , wherein covering elements, in the second angular position, are disposed on a plane, which is substantially parallel to said aperture and in first angular position, are perpendicular with respect to said plane.

6. Protective device according to claim 1 , wherein the inflatable stiffening system comprises at least an elastic conduit, which extends in parallel to said beam, and which, in the second operating configuration, is interposed between said pair of covering elements and may be pressurized, in order to dilate between elements of said pair.

7. Protective device according to claim 6 , comprising a first and second adjacent pair of covering elements, wherein said first pair of covering elements are rotatably coupled to a first supporting beam and said second pair of covering elements are rotatably coupled to a second supporting beam, the covering elements being shaped in such a way that two elements of said first and second pairs of covering elements, which are interposed between said first and second supporting beam, are provided with a first edge and second edge, which are facing each other, in order to mutually interfere, when the device attains the second operating configuration.

8. Protective device according to claim 7 , wherein said first and said second edge are complementarily shaped in order to interlock with each other in second operating configuration.

9. Protective device according to claim 8 , wherein one of said edges is provided with a continuous protrusion, extending along said edge and the other one of said edges is provided with a continuous recess extending along said edge.

10. Protective device according to claim 1 , wherein the inflatable stiffening system further comprises a peripheral inflatable conduit, which is associated to an internal edge of aperture, and which may be pressurized, when the protective device has achieved the second operating configuration, in order to cooperate with an external peripheral edge of screen.

11. Space telescope comprising at least one protective device according to claim 1 .

12. Occlusion device for removably closing an aperture, the device being such as to achieve a first and second operating configuration, respectively, for leaving said aperture at least partially open and for closing the same aperture, said occlusion device comprising:

a supporting structure comprising at least one supporting beam, which is transversely positioned with respect to aperture;

a plurality of covering elements comprising at least a pair of elements, which are rotatably coupled to the same supporting beam;

actuation means for rotating the covering elements between a first and second angular position, in order for the device to attain the first or second operating configuration, respectively, wherein, in the second operating configuration, the covering elements are such as to define, together, a screen for closing aperture; and

an inflatable stiffening system, which may be activated for stiffening the screen in the second operating configuration.

13. Occlusion device according to claim 12 , comprising a plurality of said supporting beams and a plurality of pairs of covering elements, each pair comprising covering elements, which are rotatably coupled to a respective beam.

14. Occlusion device according to claim 12 , further comprising an inflatable stiffening system, which may be activated for stiffening the screen in the second operating configuration.