Laser-diode-based source of monochromatic light

1. A laser diode light source for a light projector comprising a laser diode module suitable for forming a light bundle of color and dimensions that are determined from parallel light beams from each of a plurality of laser diodes in the laser diode module, wherein the laser diode light source further comprises, in a light-tight box, an optical system constituted by an off-axis parabolic mirror for receiving said light bundle and for focusing said light bundle, after reflecting said light bundle in a perpendicular direction relative to an orientation of the laser diode module onto an inlet of a sole outlet optical fiber of said light-tight box;

wherein said light-tight box is a rectangular parallelepiped having six faces constituted by four portions mounted by mutual engagement, first, second, and third portions of the light-tight box forming five faces of said light-tight box and a fourth portion of the light-tight box forming a sixth face and being constituted by said diode light module, which forms a lid.

2. The laser diode light source according to claim 1 , wherein said dimensions of the light bundle are determined by a number of laser diodes constituting said laser diode module.

3. The laser diode light source according to claim 1 , wherein said laser diode module having laser diodes of the same wavelength, such that said color of said light bundle is determined by a wavelength of said laser diodes constituting said laser diode module.

4. The laser diode light source according to claim 1 , wherein said laser diode module having laser diodes of first, second, and third wavelengths corresponding to the primary colors red, green, and blue, such that said color of said light bundle is determined by additive synthesis of said red, green, and blue colors.

5. The laser diode light source according to claim 4 , wherein said laser diodes are grouped together by color in said laser diode module.

6. The laser diode light source according to claim 4 , wherein said laser diodes are distributed in said laser diode module in such a manner that no two laser diodes of the same wavelength are beside each other.

7. The laser diode light source according to claim 1 , wherein said first portion itself forms three faces of said light-tight box and presents a U-shape, with an end wall that is to receive said optical system and having two side walls connected perpendicularly thereto, one of the two side walls being for receiving said outlet optical fiber.

8. The laser diode light source according to claim 1 , wherein each of said laser diodes is surmounted by a plastics or glass lens carried by a centering element, so as to deliver each of said parallel light beams.

9. A light projector including at least one laser diode light source according to claim 1 .

10. A laser diode light source for a light projector comprising:

a laser diode module suitable for forming a light bundle of color and dimensions that are determined from parallel light beams from each of a plurality of laser diodes in the laser diode module, wherein the laser diode light source further comprises, in a light-tight box, an optical system constituted by an off-axis parabolic mirror for receiving said light bundle and for focusing said light bundle, after reflecting said light bundle in a perpendicular direction relative to an orientation of the laser diode module onto an inlet of a sole outlet optical fiber of said light-tight box;

wherein said light-tight box is a rectangular parallelepiped having six faces constituted by four portions mounted by mutual engagement, first, second, and third portions of the light-tight box forming five faces of said light-tight box and a fourth portion of the light-tight box forming a sixth face and being constituted by said diode light module, which forms a lid;

wherein said first portion itself forms three faces of said light-tight box and presents a U-shape, with an end wall that is to receive said optical system and having two side walls connected perpendicularly thereto, one of the two side walls being for receiving said outlet optical fiber.

11. The laser diode light source for a light projector of claim 10 , wherein the laser diode light source is configured to provide an optical power of at least 10 W.

12. The laser diode light source for a light projector of claim 11 , wherein the optical power is at least 15 W.

13. The laser diode light source for a light projector of claim 10 , further comprising heat dissipation means comprising a metal junction plate arranged to contact a support plate supporting the laser diode module.

14. The laser diode light source for a light projector of claim 10 , wherein said laser diode module having laser diodes of first, second, and third wavelengths corresponding to the primary colors red, green, and blue, such that said color of said light bundle is determined by additive synthesis of said red, green, and blue colors.

15. The laser diode light source for a light projector of claim 14 , wherein the laser diodes of first, second, and third wavelengths are provided in proportions yielding a white color.

16. The laser diode light source for a light projector of claim 14 , wherein the number of laser diodes corresponding to red is larger than the number of laser diodes corresponding to green or blue.

17. The laser diode light source for a light projector of claim 14 , wherein a total of between 20-60 laser diodes are provided.

18. The laser diode light source for a light projector of claim 17 , wherein a number of laser diodes provided is varied to determine a dimension of the light bundle.

19. The laser diode light source for a light projector of claim 10 , wherein at least one indentation is defined in one of the first, second, and third portions of the box, the at least one indentation configured to cooperate with a shape of the laser diode light module.

20. The laser diode light source for a light projector of claim 19 , wherein the at least one indentation is defined in each of the first, second, and third portions of the box.