Motorized bracket comprising an optical path for a laser beam

Abstract

The invention relates to a bracket (10) comprising a motorized body (100) and a head (200), the body (100) comprising at least a first and a second axis of rotation (R1, R2), the body (100) being configured to support and move the head (200), the head (200) comprising one or more head devices (210, 220) configured to be supplied by at least one laser source, the bracket (10) being characterized in that a hollow optical path (400) for guiding one or more laser beams is integrated into the body (100) of the bracket (10), and in that a portion of said optical path (400) connecting at least the first axis of rotation to the second axis of rotation comprises reflectors (400a, 400b, 400c, 400d) oriented at a determined angle with respect to the first and second axes of rotation (R1, R2).

Description

Title of the invention: Motorized automated light fixture comprising an optical path for a laser beam Technical field

[0001] The present invention relates to the field of automated light fixtures for the displacement of devices emitting light beams, particularly laser beams. Prior art

[0002] The two- or three-axis motorized automated light fixtures for the support and the displacement of various devices are well known. Examples of two- or three-axis motorized automated light fixtures for example are described in documents WO 2023 / 037061 A1 and WO 2023 / 037062 A1. Such automated light fixtures usually comprise a motorized body that allows the support and the displacement of an automated light fixture head. Various devices can be mounted on the automated light fixture head, such as cameras, spotlights (light or video), or laser emitters.

[0003] Some devices require to be powered by one or several laser sources. The laser source(s) can be mounted on the head of the automated light fixture. However, such a configuration has several drawbacks. First, the dimensions and mass of the laser source are limited by the space available at the head of the automated light fixture and by the weight that can be supported by the body and the head of the automated light fixture. For similar reasons, the bulk and mass of the cooling system associated with the laser source are also very limited. Thus, only low-power laser sources can be used, and the mass and bulk of the automated light fixture are increased.

[0004] To overcome these drawbacks, it is known to use one or several external laser sources. Said external laser source(s) are thus connected to the head of the automated light fixture via one or several optical fibers. However, such a configuration presents several drawbacks. Indeed, in order to avoid damaging the optical fiber(s) during the movements of the motorized body, the amplitude and the speed of the rotations of said motorized body must be limited. Thus, the motorized body cannot perform complete rotations or rotations greater than 360° or 380°. Furthermore, since the optical fiber(s) are fragile, the motorized automated light fixture can only be operated under favorable conditions within a protected environment. Disclosure of the invention

[0005] The present invention allows overcoming the drawbacks described above by proposing a movable and robust automated light fixture capable of using powerful and various laser sources, for example of different wavelengths.

[0006] To this end, the invention proposes an automated light fixture comprising a motorized body and a head, the body comprising at least a first axis of rotation and a second axis of rotation extending in different directions, the body being configured to support and move the head, the head comprising one or several head devices configured to be powered by at least one laser source, the automated light fixture being characterized in that a hollow optical path for guiding one or several laser beams is integrated into the body of the automated light fixture, and in that part of said optical path connecting at least the first axis of rotation to the second axis of rotation comprises reflectors oriented at a determined angle with respect to the first and second axes of rotation.

[0007] Thus, the automated light fixture according to the invention allows using various external laser sources while being robust and movable. The optical path allows guiding various types of different lasers simultaneously. The automated light fixture according to the invention is thus very versatile. Since the optical path is integrated into the body, it is protected from the environment. Thus, the automated light fixture is more robust and can be used in many environments, including harsh conditions. The automated light fixture is also quick to set up and can be rapidly operational. Furthermore, the optical path of the invention allows performing rotations of the body infinitely, without any limitation on the amplitude. Since the automated light fixture is very movable and the head is light, it can move at high speed and with improved accuracy.

[0008] According to one particular aspect of the invention, the body of the automated light fixture further comprises an optical input configured to be connected to at least one laser source, the optical path connecting the optical input to the head of the automated light fixture.

[0009] According to another particular aspect of the invention, the head device(s) are galvanometric scanners.

[0010] Thus, a single automated light fixture can emit laser beams toward several targets simultaneously with high accuracy.

[0011] According to another particular aspect of the invention, the diameter of the optical path is greater than 20 mm. For example, the diameter of the optical path is comprised between 20 mm and 50 mm. For example, the diameter of the optical path is greater than 30 mm.

[0012] A large aperture of the diameter of the optical path allows passing several laser beams simultaneously, with variable divergences, and allows the guidance of several types of different lasers. For example, the optical path can guide both RGB-type laser beams and infrared-type laser beams.

[0013] According to another particular aspect of the invention, the body of the automated light fixture is motorized by hollow-shaft motors, said hollow shafts of the motors extending around the optical path.

[0014] According to another particular aspect of the invention, the automated light fixture comprises a hollow-shaft electrical collector, said hollow shaft of the electrical collector extending around the optical path.

[0015] The electrical collector is configured to transmit the electrical power and transmit the data to the head devices.

[0016] The use of hollow-shaft motors or collectors allows making the automated light fixture more compact and light, and facilitates the integration of the optical path inside the body of the automated light fixture.

[0017] According to another particular aspect of the invention, the automated light fixture further comprises at least one dichroic mirror disposed between the optical path and the head device(s), the dichroic mirror(s) being configured to split the laser beam coming from the optical path into several laser beams directed toward the head device(s).

[0018] In conclusion, the invention combines the optical aspect, the mechanical aspect and the electrical aspect to obtain a movable, robust, compact and versatile automated light fixture.

[0019] The invention also relates to a laser beam emission system comprising an automated light fixture as described above and one or several laser sources, the laser source(s) being connected to the optical path.

[0020] According to one particular aspect of the invention, the laser beam emission system comprises at least a first laser source emitting a laser beam at a first wavelength and a second laser source emitting a laser beam at a second wavelength different from the first wavelength, the automated light fixture comprising at least a first galvanometric scanner and a second galvanometric scanner, the automated light fixture further comprising at least one dichroic mirror disposed between the optical path and the first and second galvanometric scanners, said dichroic mirror being configured to direct the laser beam at the first wavelength toward the first galvanometric scanner and to direct the laser beam at the second wavelength toward the second galvanometric scanner.

[0021] According to one particular aspect of the invention, the first laser source emits an RGB-type laser beam and the second laser source emits an infrared laser beam. Brief description of the drawings

[0022] [Fig. 1] Figure 1 is a schematic sectional view of an automated light fixture according to the invention.

[0023] [Fig. 2] Figure 2 is a detailed view of Figure 1 illustrating a reflector of the automated light fixture.

[0024] [Fig. 3] Figure 3 is a detailed view of Figure 1 illustrating a motor and an electrical collector of the automated light fixture.

[0025] [Fig. 4] Figure 4 is a diagram illustrating a galvanometric scanner.

[0026] [Fig. 5] Figure 5 is a diagram illustrating a system comprising the automated light fixture of Figure 1 for the illumination of targets. Description of the embodiments

[0027] Figure 1 illustrates one example of an automated light fixture 10 according to the invention. The automated light fixture 10 comprises a body 100 and a head 200. The body 100 is configured to support and move the head 200.

[0028] The body 100 is movable at least according to a first axis of rotation R1 and according to a second axis of rotation R2. The first axis of rotation R1 and the second axis of rotation R2 extend according to different directions. The first axis of rotation R1 is preferably perpendicular to the second axis of rotation R2. Preferably, the first axis of rotation R1 allows for a pan-type rotation and the second axis of rotation R2 allows for a tilt-type rotation. There is of course no departure from the framework of the invention if the body is movable according to a third axis of rotation extending along a direction different from the directions of the first and second axes of rotation. The third axis of rotation R3 allows for a roll-type rotation. Other axes of rotation are of course possible.

[0029] The body 100 is motorized. The body 100 comprises at least a first motor 110 to perform the rotation according to the first axis of rotation R1 and a second motor 120 to perform the rotation according to the second axis of rotation R2. If the body is movable according to a third axis of rotation, the body may comprise a third motor to perform the rotation about the third axis of rotation.

[0030] The body 100 may comprise a foot configured to fix the automated light fixture 10. For example, the foot of the body 100 may be configured to be disposed on the floor or on a platform, as illustrated in Figure 1. The foot of the body 100 may be configured to be fixed to a structure, a wall or a ceiling. Thus, the foot of the body 100 allows fixing the automated light fixture 10 in height or suspending the automated light fixture 10.

[0031] The first axis of rotation R1 allows a rotation between the foot and the rest of the body 100, as illustrated in Figure 1. The second axis of rotation R2 allows a rotation of the head 200 relative to the body 100.

[0032] The body 100 may further comprise an electrical collector 130. The electrical collector 130 can be configured to transmit different types of data between the components of the automated light fixture 10. For example, the electrical collector 130 allows transmitting video data. The electrical collector 130 can also be configured to transmit voltages to power the components of the automated light fixture 10. The electrical collector 130 can for example transmit voltages comprised between 5 V and 240 V. The electrical collector 130 can be configured both to transmit different types of data between the components of the automated light fixture 10 and to power the components of the automated light fixture 10.

[0033] The head 200 of the automated light fixture 10 comprises one or several head devices 210, 220. The head 200 comprises at least one head device configured to be powered by a laser source. Such devices configured to be powered by a laser source may for example be one or several scanners, for example galvanometer scanners. Such devices configured to be powered by a laser source may for example be one or several measuring instruments, for example of the lidar type. The head 200 may comprise a combination of several types of devices powered by a laser source.

[0034] The head 200 may further comprise other types of head devices powered by means other than a laser source. The head 200 may comprise for example one or several cameras, one or several non-laser scanners and / or one or several measuring instruments, such as rangefinders or radars.

[0035] In accordance with the invention, the automated light fixture 10 does not include a laser source. The laser source(s) are external to the automated light fixture 10.

[0036] The body 100 comprises at least one optical input. The optical input of the body 100 is configured to be connected to one or several laser sources.

[0037] The automated light fixture 10 comprises a hollow optical path 400 connected to the optical input and connected to the head 200. The optical path 400 extends at least from the first axis of rotation R1 to the second axis of rotation R2 of the body 100. Preferably, the optical path 400 extends from the optical input of the body 100 to the head 200, as in the example illustrated in Figure 1.

[0038] In the present application, the terms "entrance", "exit", "preceding" and "next" are defined with respect to the direction of travel of the laser beam.

[0039] An optical collector may be present at the optical input (not represented). The optical collector is configured to collect the laser beams derived from different laser sources and to direct them in the optical path 400. The optical collector comprises a plurality of reflectors.

[0040] The optical path 400 is configured to guide one or several laser beams. The optical path 400 is integrated into the body 100 of the automated light fixture 10. The optical path 400 comprises walls that delimit an internal volume for the passage of laser beams. The walls of the optical path 400 are rigid. The internal volume is devoid of solid state material. The optical path 400 is not an optical fiber. The optical path 400 is not an optical fiber passage.

[0041] The diameter of the optical path 400 is preferably greater than 30 mm, even greater than 40 mm. Indeed, the larger the diameter of the optical path 400, the more the optical path 400 allows guiding a wide variety of laser beams, with different divergences.

[0042] The optical path 400 allows guiding laser beams of classes 1 to 4. The optical path 400 allows guiding laser beams with a power comprised between 10 W and 4 kW. The optical path 400 allows guiding laser beams with a power greater than 4 kW. The optical path 400 allows guiding RGB or infrared laser beams.

[0043] The optical path 400 allows guiding laser beams while maintaining the same diameter for the beam at the entrance and at the exit.

[0044] The optical path 400 can be fixed inside the body 100 by means of fixing flanges 404, as illustrated in Figure 1.

[0045] The optical path 400 comprises at least a first main segment 410 extending along the first axis of rotation R1 and a second main segment 420 extending along the second axis of rotation R2. The first main section is movable in rotation about the first axis of rotation R1 and the second main segment 420 is movable in rotation about the second axis of rotation R2. The optical path 400 can comprise a plurality of main segments 410, 420 extending according to each axis of rotation R1, R2 of the body 100. The main segments 410, 420 are rectilinear. The main segments 410, 420 are axisymmetric about their axis of rotation R1, R2.

[0046] The optical path 400 may further comprise secondary segments 430, 440 connecting the first main segment 410 to the second main segment 420. The secondary segments 430, 440 are rectilinear. The first main segment 410 can also be connected to the optical input by a secondary entrance segment 450.

[0047] In the example illustrated in Figure 1, the secondary entrance segment 450 connects the optical input to the entrance of the first main segment 410. The first secondary segment 430 connects the exit of the first main segment 410 to the entrance of the second secondary segment 440. The second secondary segment 440 connects the exit of the first secondary segment 430 to the entrance of the second main segment 420. The exit of the second main segment 420 is connected to the head 200.

[0048] The main segments 410, 420 are movable in rotation relative to the preceding segment 450, 440 of the optical path 400. Thus, the first main segment 410 is movable in rotation relative to the secondary entrance segment 450. The second main segment 420 is movable in rotation relative to the second secondary segment 440.

[0049] The optical path 400 may comprise at least one rotating angle transmission system 401, 402 for each axis of rotation R1, R2 of the body 100. The rotating angle transmission systems 401, 402 are disposed at the entrance of each main segment 410, 420. The rotating angle transmission systems 401, 402 make the junction between the main segment 410, 420 and the preceding segment 450, 440 of the optical path 400. The rotating angle transmission systems 401, 402 allow maintaining the guidance of the laser beam despite the rotation of the main segments 410, 420.

[0050] In the example illustrated in Figure 1, the first rotating angle transmission system 401 makes the junction between the secondary entrance segment 450 and the first main segment 410. Thus, the first rotating angle transmission system 401 allows the rotation of the first main segment 410 relative to the secondary entrance segment 450 while maintaining the guidance of the laser beam. The second rotating angle transmission system 402 makes the junction between the second secondary segment 440 and the second main segment 420. Thus, the second rotating angle transmission system 402 allows the rotation of the second main segment 420 relative to the second secondary segment 440 while maintaining the guidance of the laser beam.

[0051] The optical path 400 comprises a plurality of reflectors 400a, 400b, 400c, 400d. Figure 2 illustrates one example of a reflector 400b. The reflectors 400a, 400b, 400c, 400d allow reflecting the laser beams guided by the optical path 400. The reflectors 400a, 400b, 400c, 400d are preferably positioned at the bends of the optical path 400. The reflectors 400a, 400b, 400c, 400d are thus positioned at the junction between two segments of the optical path 400. The reflectors 400a, 400b, 400c, 400d are oriented at a determined angle s as to reflect the laser beam(s) coming from a segment of the optical path 400 toward the next segment of the optical path 400. Typically, the segments 410, 420, 430, 440, 450 of the optical path 400 are disposed perpendicularly to each other. In this case, the reflectors are inclined at 45°, as illustrated in Figure 2. The reflective surface of the reflectors 400a, 400b, 400c, 400d can have a dimension greater than 400 nm. Particularly, the reflective surface of the reflectors 400a, 400b, 400c, 400d can have a dimension comprised between 400 nm and 800 nm.

[0052] In the example illustrated in Figures 1 and 2, the laser beam passing through the optical input travels along the secondary entrance segment 450. The laser beam is then reflected by the first reflector 400a located at the junction between the secondary entrance segment 450 and the first main segment 410. The laser beam passes through the first rotating angle transmission system 401. The laser beam then passes through the first main segment 410. The laser beam is then reflected by the second reflector 400b located at the junction between the first main segment 410 and the first secondary segment 430. The laser beam then passes through the first secondary segment 430. The laser beam is then reflected by the third reflector 400c located at the junction between the first secondary segment 430 and the second secondary segment 440. The laser beam then passes through the second secondary segment 440. The laser beam is then reflected by the fourth reflector 400d located at the junction between the second secondary segment 440 and the second main segment 420. The laser beam passes through the second rotating angle transmission system 402. The laser beam then passes through the second main segment 420.

[0053] The head 200 may comprise a processing system 230 for processing and / or splitting the laser beam(s) coming from the optical path 400. The processing system 230 in particular allows splitting the laser beam coming from the optical path 400 into several distinct laser beams, and directing said distinct laser beams each toward one of the head devices 210, 220. The processing system 230 may for example be a dichroic mirror 230. The dichroic mirror allows splitting a laser beam at a first wavelength from a laser beam at a second wavelength different from the first wavelength. The dichroic mirror thus allows splitting an RGB laser beam from an infrared laser beam, or splitting laser beams of different colors.

[0054] The first main segment 410 of the optical path 400 passes through the first motor 110, as illustrated in Figures 1 and 3. The second main segment 420 of the optical path 400 passes through the second motor 120, as illustrated in Figure 1. The first main segment 410 of the optical path 400 may pass through the electrical collector 130.

[0055] The first and second motors 110, 120 have a hollow shaft to allow the passage of the optical path 400. The hollow shafts of the motors 110, 120 have a large diameter. In order to allow the passage of the optical path 400, the diameter of the hollow shaft of the motors is preferably greater than 30 mm, or even greater than 40 mm.

[0056] As illustrated in Figure 3, the first motor 110 has a hollow shaft 114 extending along the first axis of rotation R1. The first motor 110 comprises a stator 111 and a rotor 112. The stator 111 and the rotor 112 of the first motor 110 can be disposed one after the other along the first axis of rotation R1. The stator 111 and the rotor 112 of the first motor 110 are disposed around the optical path 400, particularly around the first main segment 410.

[0057] In order to obtain the lightest possible motors to facilitate the displacement of the automated light fixture 10, the motors 110, 120 may be direct-drive motors, without gears.

[0058] As illustrated in Figure 3, the electrical collector 130 has a hollow shaft 134 extending along the first axis of rotation R1. The electrical collector 130 comprises a stator 131 and a rotor 132. The stator 131 of the electrical collector 130 can be disposed around the rotor 132 of the electrical collector 130. The stator 131 and the rotor 132 of the electrical collector 130 are disposed around the optical path 400, particularly around the first main segment 410. In order to allow the passage of the optical path 400, the diameter of the hollow shaft 134 of the electrical collector 130 is preferably greater than 30 mm, or even greater than 40 mm.

[0059] Thus, the body 100 can perform several complete rotations about its axes of rotation R1, R2.

[0060] According to one particular embodiment of the invention, at least one of the head devices 210 can be a galvanometric scanner. The operation of the galvanometric lasers is well known. Preferably, the head 200 of the automated light fixture 10 comprises a plurality of galvanometric scanners. The galvanometric scanners 210, 220 present in the head 200 have mirror dimensions with a width greater than or equal to 90 mm and a length greater than or equal to 100 mm.

[0061] Figure 4 illustrates one example of a galvanometric scanner 210 comprising a first mirror 211 movable in rotation about a first axis of rotation R211, a second mirror 212 movable in rotation about a second axis of rotation R212, and a lens 213. Figure 4 illustrates a laser beam 7 passing through the galvanometric scanner 210. The laser beam 7 is first reflected by the first mirror 211 and then reflected by the second mirror 212. The laser beam 7 then passes through the lens 213. The laser beam 7 can then exit the automated light fixture 10.

[0062] Figure 5 illustrates one example of a laser beam emission system 1 comprising the automated light fixture 10 and one or several laser sources 20, 30. The laser source(s) 20, 30 can emit laser beams of class 1, 2, 3 or 4. The laser source(s) 20, 30 can emit laser beams with a power comprised between 10 W and 4 kW. The laser source(s) 20, 30 can emit laser beams with a power greater than 4 kW. The laser source(s) 20, 30 can emit RGB or infrared laser beams.

[0063] The laser sources 20, 30 can be connected to the automated light fixture 10 by means of optical fibers 21, 31. Particularly, the laser sources 20, 30 are connected to the optical input of the body 100 of the automated light fixture 10. Thus, the laser beams emitted by the laser sources 20, 30 enter the optical path 400. As described previously, an optical collector can be present at the optical input to collect the laser beams emitted by the different laser sources 20, 30.

[0064] The laser beams are routed to the head 200 of the automated light fixture 100 by the optical path 400. The laser beams can then be processed by the processing system 230. The processing system 230 allows splitting the laser beams emitted by the different sources 20, 30. In the example illustrated in Figure 5, the processing system 230 allows splitting the laser beam emitted by the first source 20 from the laser beam emitted by the second source 30. For example, the first source 20 can emit an RGB-type laser beam and the second source can emit an infrared laser beam. The processing system 230 can then be a dichroic mirror that allows passing the infrared laser beam and reflects the RGB laser beam.

[0065] The processing system 230 then directs the split laser beams toward the various head devices 210, 220, which are for example galvanometer scanners. In the example illustrated in Figure 5, the processing system 230 directs the laser beam emitted by the first source 20 toward the first galvanometer scanner 210 and directs the laser beam emitted by the second source 30 toward the second galvanometer scanner 220.

[0066] The first galvanometer scanner 210 thus allows the automated light fixture 10 to emit a first type of directed laser beam 7a. The second galvanometer scanner 220 allows the automated light fixture 10 to emit a second type of directed laser beam 7b. Thus, the automated light fixture 10 can for example emit with the first head device 210 one or several RGB-type directed laser beams 7a to illuminate a target, for example to dazzle it, and with the second head device 220 one or several infrared directed laser beams 7b for night illumination. The automated light fixture 10 can emit several types of laser beams 7a, 7b simultaneously. The automated light fixture 10 can emit several types of laser beams 7a, 7b simultaneously on each of the pointed targets 6a, 6b, 6c.

[0067] The use of galvanometric scanners 210, 220 allows emitting the laser beams 7a, 7b toward several targets 6a, 6b, 6c simultaneously with the same automated light fixture 10 while maintaining excellent accuracy. The accuracy achieved is of the order of 1 to 3 arc seconds. The automated light fixture 10 of the invention can thus emit laser beams 7a, 7b reaching up to five targets 6a, 6b, 6c present in the same area of interest.

[0068] The laser beam emission system 1 may also comprise a management unit 40 connected to the automated light fixture 10. The management unit 40 can be configured to control the displacements of the body 100 of the automated light fixture 10. Particularly, the management unit 40 can be configured to control the actuation of the motors 110, 120 of the body 100 in order to actuate the automated light fixture 10. The automated light fixture 10 can thus be actuated to point to an area of interest.

[0069] Thanks to the optical path 400, the automated light fixture 10 according to the invention has complete freedom of rotation and can perform very rapid rotations. Thus, the accuracy of the automated light fixture 10 can be adjusted very quickly, of the order of 300 readjustments per second.

[0070] The expression "comprised between ... and ..." should be understood as including the bounds.

Claims

1. An automated light fixture (10) comprising a motorized body (100) and a head (200), the body (100) comprising at least a first axis of rotation (R1) and a second axis of rotation (R2) extending in different directions, the body (100) being configured to support and move the head (200), the head (200) comprising one or several head devices (210, 220) configured to be powered by at least one laser source,the automated light fixture (10) being characterized in that a hollow optical path (400) for guiding one or several laser beams is integrated into the body (100) of the automated light fixture (10), and in that part of said optical path (400) connecting at least the first axis of rotation to the second axis of rotation comprises reflectors (400a, 400b, 400c, 400d) oriented at a determined angle with respect to the first and second axes of rotation (R1, R2).

2. The automated light fixture (10) according to claim 1, wherein the body (100) of the automated light fixture (10) further comprises an optical input configured to be connected to at least one laser source, the optical path (400) connecting the optical input to the head (200) of the automated light fixture (10).

3. The automated light fixture (10) according to claim 1 or 2, wherein the head device(s) (210, 220) are galvanometric scanners.

4. The automated light fixture (10) according to any one of claims 1 to 3, wherein the diameter of the optical path (400) is greater than 20 mm.

5. The automated light fixture according to any one of claims 1 to 4, wherein the body (100) of the automated light fixture (10) is motorized by hollowshaft motors (110, 120), said hollow shafts (114) of the motors (110, 120) extending around the optical path (400).

6. The automated light fixture (10) according to any one of claims 1 to 5, the automated light fixture (10) comprising a hollow-shaft electrical collector (130), said hollow shaft (134) of the electrical collector (130) extending around the optical path (400).

7. The automated light fixture (10) according to any one of claims 1 to 6, the automated light fixture (10) further comprising at least one dichroic mirror (230) disposed between the optical path (400) and the head device(s) (210, 220), the dichroic mirror(s) (230) being configured to split the laser beam coming from the optical path (400) into several laser beams directed toward the head device(s) (210, 220).

8. A laser beam emission system (1) comprising an automated light fixture (10) according to any one of claims 1 to 7 and one or several laser sources (20, 30), the laser source(s) (20, 30) being connected to the optical path (400).

9. The laser beam emission system (1) according to claim 8, comprising at least a first laser source (20) emitting a laser beam at a first wavelength and a second laser source (30) emitting a laser beam at a second wavelength different from the first wavelength, the automated light fixture (10) comprising at least a first galvanometric scanner (210) and a second galvanometric scanner (220), the automated light fixture (10) further comprising at least one dichroic mirror (230) disposed between the optical path (400) and the first and second galvanometric scanners (210, 220), said dichroic mirror (230) being configured to direct the laser beam at the first wavelength toward the first galvanometric scanner (210) and to direct the laser beam at the second wavelength toward the second galvanometric scanner (220).

10. The laser beam emission system (1) according to claim 9, wherein the first laser source (20) emits an RGB-type laser beam and the second laser source (30) emits an infrared laser beam.

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