Lighting device and stage light fixture comprising a plurality of such lighting devices

1. A lighting device that produces scenic effects comprising:

a light source assembly;

a light guide extending along a longitudinal axis and coupled to the light source assembly that defines a defined optical path;

a primary mirror arranged along the longitudinal axis facing the light source assembly to reflect the light beam coming out from the light guide; and

a secondary mirror facing the primary mirror to reflect the light beam reflected by the primary mirror towards an emission area surrounding the primary mirror,

wherein a primary reflecting surface of the primary mirror has at least one first portion having a first hyperbolic shape or a first aspherical shape of even order and degree equal to or greater than four and a secondary reflecting surface of the secondary mirror has at least one second portion having a second hyperbolic shape or a second aspherical shape of even order and degree equal to or greater than four, and

the primary mirror is surrounded by a hood element, which diverges towards the light source assembly and is configured to prevent loss of light radiation.

2. The device according to claim 1 , wherein the primary reflection surface of the primary mirror and/or the secondary reflection surface of the secondary mirror has an axisymmetric shape.

3. The device according to claim 1 , wherein the primary reflection surface of the primary mirror and/or the secondary reflection surface of the secondary mirror is toric.

4. The device according to claim 1 , wherein the primary reflecting surface of the primary mirror comprises a third portion having a third hyperbolic shape or a third aspherical shape of even order and degree equal to or greater than four.

5. The device according to claim 4 , wherein the third hyperbolic shape is different from the first hyperbolic shape or the third aspherical shape is different from the first aspherical shape.

6. The device according to claim 4 , wherein the third portion is movable relative to the first portion.

7. The device according to claim 4 , wherein the secondary reflecting surface of the secondary mirror comprises a fourth portion having a fourth hyperbolic shape or a fourth aspherical shape of even order and degree equal to or greater than four.

8. The device according to claim 7 , wherein the fourth hyperbolic shape is different from the second hyperbolic shape or the third aspherical shape is different from the second aspherical shape.

9. The device according to claim 7 , wherein the fourth portion is movable relative to the second portion.

10. The device according to claim 1 , wherein the secondary mirror is provided with a hole substantially centered on the longitudinal axis in which the light guide is housed.

11. The device according to claim 1 , wherein the light guide is an optical tube provided with an inlet coupled to the light source assembly and an outlet, and the primary mirror is arranged at a distance of 10 and 19 mm from the outlet.

12. The device according to claim 1 , further comprising a casing extending along the longitudinal axis and provided with a first closed end and a second end opposite the first closed end along the longitudinal axis and provided with a projection outlet that defines the emission area of the light beam, the casing provided with a closing element having a shape complementary to the projection outlet.

13. The device according to claim 12 , wherein the projection outlet has a substantially square or rectangular cross-section.

14. The device according to claim 12 , comprising an optical element selectively releasably coupled to the closure element.

15. A stage light fixture comprising a plurality of the lighting devices according to claim 1 .