• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    The present invention relates to an aircraft (1) equipped with a lighting system (10) comprising at least one main projector (21) located outside (EXT) of the fuselage (2) of said aircraft (1). The lighting system (10) comprises in the fuselage at least one light generator (30) which comprises a plurality of laser diodes (35), at least two laser diodes emitting respectively two beams of different wavelengths, a combiner internal light source (41) generating from said initial beams (100) a light beam (101) directed to the main projector (21). The main projector (21) includes a main optical head (60) including an optical processing system (65) that transforms a geometric shape of the light beam (101) to emit a final beam (102) having an adjustable geometric shape (103) .
    公开号:FR3034079A1
    申请号:FR1500616
    申请日:2015-03-27
    公开日:2016-09-30
    发明作者:Herve Routin；Chambault Samuel Certain；Christophe Mouton；Marc Gazzino；Jean Philippe Velayguet
    申请人:Airbus Helicopters SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a lighting system of an aircraft, and to an aircraft equipped with such a lighting system. The invention is therefore in the technical field of aircraft headlights, and more particularly in the technical field of rotorcraft headlights. An aircraft and in particular a rotorcraft is usually provided with a plurality of onboard lighting systems to illuminate the environment outside the aircraft. In their generality, such lighting systems implement one or more headlights and means for controlling the emission of a light beam by the headlight. In particular, an aircraft may include a signaling system for visually signaling the presence of this aircraft. Such a signaling system may include a plurality of headlights called "traffic lights" fixed. The arrangement of these traffic lights at multiple areas of the aircraft involves the use of a mesh of electrical cables snaking in the aircraft. An aircraft may also include a lighting system used in particular for performing a winching operation. Such a lighting system includes a winching beacon for moderately illuminating an area. A towing beacon generally comprises a headlamp generating a geometrically non-adjustable light beam, this light beam having a low and fixed light power. The headlamp of a towing beacon is usually stationary. 3034079 2 An aircraft may also include a lighting system used in particular during the landing of this aircraft. Such a lighting system includes landing lights for moderately illuminating a predetermined area of the ground in approaching flight phase of the aircraft. A landing beacon usually comprises a projector electrically connected to a source of electrical energy. This projector usually has a short life, of the order of a hundred hours of use. In addition, the headlamp of a landing light generally emits a light beam having a low non-adjustable optical power, of the order of 50 Watts for example. In addition, this light beam is generally not adjustable geometrically. As a result, the shape of the light beam can not be adjusted. For example, the light beam takes the form of a cone of light that can not be enlarged or narrowed to adjust the dimensions of the illuminated area. A landing light is also provided with a motor 20 for orienting the projector. The engine is connected to controls operable by an operator. An aircraft may also include a lighting system used in particular for conducting searches. Such a lighting system includes a searchlight for illuminating with high brightness areas that may be relatively unspecified and remote from the rotorcraft. A search beacon then usually comprises a projector electrically connected to a source of electrical energy. 3034079 3 This projector usually has an average life of around a thousand hours. In addition, and to fulfill its function, the headlamp of a searchlight generally emits a light beam having a high non-adjustable optical power, of the order of 70 to 140 Watts for example. Such power is likely to dazzle people on the ground. The use of a searchlight is then prohibited at a short distance from people on the ground. The light beam of a searchlight is slightly geometrically adjustable. Indeed, a search beacon may include a zoom device requiring a complex mechanical subject to vibrations. For example, the zooming device comprises moving lenses and a mechanical displacement system for moving these lenses. 15 A search beacon is also provided with a motor to direct the projector of the searchlight. The motor is connected to controls operable by an operator. Consequently, none of the headlights usually arranged on a rotorcraft makes it possible to generate an orientable light beam having an adjustable geometry and having an adjustable light output. In addition, the headlamps of the headlights of a rotorcraft is in particular search and landing lights are bulky A conventional searchlight has a large footprint, of the order of the size of a cube having edges several tens of centimeters for example. Therefore, these landing and search lights have a bulky engine to move the associated projectors which significantly increases the size and mass of the entire device. As a result, a landing light or search generally generates a significant aerodynamic drag and penalizing in flight. In addition, the shape of the light beam generated by these 5 search and landing lights is generally not adjustable in flight. To adjust this shape, the search or landing beacon can be equipped with a filter placed during a maintenance operation, or movable flaps. The arrangement of such flaps is to the detriment of the aerodynamic drag of the lighthouse. In addition, a search beacon is connected to large diameter electrical wiring, of the order of five centimeters for example. These wirings extend in the aircraft over long distances. As a result, a search beacon requires the implementation of an imposing and heavy electrical installation. In addition, this electrical installation can generate troublesome electromagnetic interference for other equipment. The present invention aims to reduce the aerodynamic drag of a headlamp with a searchlight and a motor, and in particular a searchlight. The document US 2013 / 335,989 is far from the state of the art answering this problem. Indeed, document US 2013 / 335,989 describes a headlight comprising a fixed headlamp connected by at least one optical fiber to a remote laser system. This laser system has a plurality of laser sources for generating a laser beam having a blue-violet color. This beam has a wavelength, for example of the order of 405 nm (nanometers). As a result, the projector includes a light emitting means for emitting white light. This light emitting means is provided with a heat conductor placed upstream of phosphorus particles. Each laser beam irradiates the heat conductor for the phosphor particles to emit light. The lighthouse then emits a white light resulting from the mixing of the blue-violet light emitted by the laser system and the light emitted by the excited phosphor particles. Other documents are far from the problem of the invention. Thus, the document WO2013052178 describes a drone receiving electrical power in the form of a light transmitted by an optical fiber. The drone comprises a receiver which converts a portion of the emitted light to another form of power, particularly in the form of electrical power. US5796890 discloses a device transmitting an optical signal bidirectionally between two remote stations. The optical signal can be converted to provide electrical power and an electrical control signal.
    [0002] Document US 2014 / 168,940 describes a system provided with a lens interposed between an optical fiber and a light emitting unit. WO 2012/027851 discloses a system provided with a light source comprising a light emitting diode. In addition, the system includes a lens with changeable divergence. US 8,095,014 discloses a system and method for transmitting data bidirectionally between a ground station and a mobile station.
    [0003] FR2814434 discloses a lateral position light of a rocking rotor. WO 2014/145465 is cited for information. This document describes an ophthalmic device and is therefore not in the technical field of the invention, namely the field of lighting systems of an aircraft. This ophthalmic device comprises three laser sources arranged in a light generator. Each laser source emits a laser beam. In addition, a combiner mixes the laser beams to obtain a beam of light directed towards an optical fiber. The optical fiber then has an output in the form of a hollow needle to be inserted into an eye. The object of the present invention is therefore to propose an aircraft equipped with a lighting system capable of generating a high power light beam and aiming to have reduced aerodynamic drag. The invention thus relates to an aircraft equipped with a fuselage and a lighting system, this lighting system comprising at least one projector called "main projector" located outside the fuselage of the aircraft. For example, the main projector is a search beacon. In addition, the lighting system comprises at least one centralized light generator arranged inside the fuselage, the light generator comprising a plurality of light sources which includes at least two laser diodes each emitting a beam of light said initial beam "to a light combiner of the light generator said" internal light combiner ", at least two laser diodes respectively emitting two initial beams of different wavelengths, the internal light combiner generating from the initial beams a light beam directed to an optical output of the light generator, the optical output directing the light beam 5 to an optical input of the main projector, said main projector comprising an optical head called "main optical head", said main optical head including a system optical processing that transforms a geometric shape e of the light beam transmitted by the light generator to emit towards the outside of the main optical head a light beam called "final beam" having an adjustable geometric shape, the spectrum of the final beam comprising only one or more lines of the spectrum incident light beam. The spectrum of the final beam therefore comprises only lines 15 placed at frequencies equal to lines of the spectrum of the incident light beam. The expression "the optical output directing the light beam towards an optical input of the main projector" means that the illumination system allows the light beam to travel from the optical output of the light generator to the optical input of the light source. main optical head. In addition, the term "principal" or "principal" refers to a constituent part of the main projector. The light generator therefore comprises a plurality of light sources. Several light sources each comprise a laser diode emitting a laser beam type of light beam. A laser diode has the advantage of emitting a laser beam at a relatively high power with a small emission area. The laser beam emitted by a laser diode can further easily be processed to be directed to an optical fiber for example. Therefore, the lighting system comprises a light generator provided with at least a plurality of different laser diodes. For example, the light generator comprises at least one infrared laser diode generating an initial beam in an infrared frequency range, and / or at least one blue laser diode generating an initial beam of blue color, and / or at least one laser diode red generating an initial beam of red color, and / or at least one green laser diode generating an initial beam of green color. Each laser diode can generate a quasi-monochromatic beam. The quasi-monochromatic expression is known to those skilled in the art and means that the spectrum of the beam emitted by the laser diode has a narrow spectral range spectrum of less than 10 nanometers, for example. In addition, at least one light source may comprise a light emitting diode emitting an initial beam.
    [0004] The initial beams are mixed by the internal light combiner. Classically, a combiner mixes beams. As a result, the internal light combiner generates a light beam from the received initial beams. A combiner provided with at least one mirror may for example be used.
    [0005] A light beam is then a high power beam having a color resulting from the combination performed. This power can be adjustable by controlling the combiner or the light sources. The light beam transmitted to the main projector is for example a polychromatic beam 3034079 9 having wavelengths of between 300 and 900 nanometers. Such a light beam is for example a white color beam with an optical power of the order of 100 Watts.
    [0006] This light beam is then transmitted to the optical head called "main optical head" of a main projector which is located outside the fuselage. This main optical head has an optical processing system which adjusts the geometrical shape of the received light beam to obtain the appropriate final beam output of this main optical head. As a result, the final beam emitted by the main optical head has a spectrum comprising only one or more lines of the spectrum of the light beam. A spectrum has at least one line, each line being associated with a frequency and an intensity. A spectrum is usually represented in a diagram comprising on the abscissa a frequency and on the ordinate an intensity. For example, a spectrum may comprise a line between 400 nanometers and 500 nanometers, a line between 500 nanometers and 20 600 nanometers, and a line between 600 nanometers and 700 nanometers. The expression "spectrum comprising only one or more lines of the spectrum of the light beam" means that the spectrum of the final beam does not include lines placed at frequencies for which the spectrum of the light beam does not contain lines. The absence of a line in a frequency spectrum must then be understood as representing the absence of a line at a given frequency.
    [0007] According to one variant, the optical processing system makes it possible to adjust only the geometrical shape of the light beam. The final beam emitted by the main optical head then has the same spectrum as the light beam feeding the main optical head. According to one variant, the optical processing system makes it possible to adjust the geometrical shape of the light beam. In addition, the optical processing system may include a simple bandpass filter for subtracting an illuminating beam from the light beam. The final beam emitted by the main optical head then has a reduced spectrum compared to the light beam feeding the main optical head. At least one line of the spectrum of the light beam does not appear in the spectrum of the final beam.
    [0008] Regardless of the variant, a filter can also decrease the intensity associated with a line. The filter acts on the color of the light beam. Moreover, the final beam takes the form of a cylinder of light, or a cone of light having an adjustable opening up to about 60 degrees for example. The expression "initial beam" therefore designates each beam emitted by a light source upstream of the internal light combiner, the expression "light beam" designating the beam coming out of an internal light combiner. Finally, the term "final beam" refers to the beam generated by an optical processing system. Therefore, the invention proposes to make a strong power beam having a predetermined color within a light generator present in a fuselage.
    [0009] 3034079 11 This high-power beam, called the light beam, is transmitted to the main optical head of the main projector. The main optical head does not extend the wavelength spectrum of the light beam by not adding any line to this spectrum, or even altering the color of the light beam. The optical head makes it possible to adjust the geometrical shape of the received beam, or even makes it possible to direct it towards a zone to be illuminated. This solution is the opposite of the teaching of the document US 2013 / 335,989 which aims to obtain a light beam with the aid of a light emitter arranged in an optical head. The main optical head of the main projector of the invention is devoid of such a light emitter. Indeed, the received light beam already has the power and the spectrum of maximum wavelengths required. Therefore, the main optical head of the main projector may have small dimensions. As an illustration, the main optical head can substantially take the form of a cube provided with edges of five centimeters. Indeed, the light beam penetrating the main optical head can for example flow in optical fibers of small diameter, of the order of a millimeter, for example. Moreover, the geometrical and optical treatment of this beam can be achieved using lenses of small dimensions and therefore not bulky. The invention then makes it possible to implement an optical head 25 of small dimensions, and therefore an optical head generating a low aerodynamic drag in flight. The light generator can instead have relatively bulky dimensions. However, this size is less troublesome because of the arrangement of the generator in the fuselage.
    [0010] In addition, the main optical head of the main projector does not require the implementation of electrical wiring to generate light. The invention thus makes it possible to avoid the disadvantages of optical heads using electric bulbs.
    [0011] Therefore, the invention makes it possible to use a light generator arranged in a fuselage so as not to generate excessive aerodynamic drag. This light generator transmits a light beam having the desired maximum characteristics to at least one optical head of a projector, which makes it possible to arrange optical heads of small dimensions. Said characteristics include the maximum number of wavelength lines, as well as the frequency and intensity associated with each line. The invention may further include one or more of the following features. For example, each optical output is connected to said optical input by at least one optical fiber link. A manufacturer determines the appropriate optical fiber according to his general knowledge.
    [0012] According to this characteristic the light beam is led to an optical head at least using an optical fiber. The optical fiber allows the light beam to easily follow a non-rectilinear path. On the other hand, the light generator may include an optical injector interposed between the internal light combiner and the optical output of the light generator. An optical injector has the function of converging the light beam.
    [0013] 3034079 13 This optical injector allows to focus the final beam towards the optical output to optimize its transmission towards an optical head. For example, the optical injector focuses the light beam to an optical fiber connected to the optical output.
    [0014] On the other hand, the optical processing system of the main projector may include a zooming device downstream of said optical input. The terms "downstream" and "upstream" are to be considered with regard to the direction of propagation of light.
    [0015] The zooming device may be a commercial device. The zoom device may comprise two lenses movable relative to each other to adjust the geometric shape of the final beam. The zooming device may be electrically controlled by means of a control member manipulable by an operator and electrically connected to a small sized motor arranged in the optical head. The zooming device can also be controlled mechanically, especially on the ground. For example, a lens 20 slides on a rail or the like, the zoom device having a pull tab connected to the lens to move it. The optical processing system of the main projector may include a light collimator called "remote light collimator" downstream of the optical input.
    [0016] For example, the remote light collimator may enlarge or parallel the final beam before it enters a zooming device.
    [0017] As a result, the remote light collimator of the main projector is arranged upstream of a zooming device of the main projector. On the other hand, the light generator may include a cooling system. The light generator makes it possible to generate a final beam by using a plurality of light sources and in particular laser diodes. In particular, the internal light combiner can generate white light from different laser diodes.
    [0018] Nevertheless, the light generating device may heat during this process. Therefore, an air or liquid cooling system can be implemented. For example, the light generator may include a fan. The arrangement of such a cooling system is not a problem in itself because of the implantation of the light generator exclusively in the fuselage. In addition, the light generator may include a power supply capable of being connected to an electrical circuit, said power supply being connected to each light source and in particular to each laser diode. The power supply provides power to the light sources to operate each projector connected to the light generator, and in particular the main projector.
    [0019] A control system can control the power supply of the light sources, jointly and / or separately, through the power supply.
    [0020] In addition, the light generator may include an inhibition system for inhibiting said light beam. This inhibition system may be a control system of the aforementioned type which cuts off the power supply of the light sources. Nevertheless, this inhibition system may include a diaphragm or equivalent which interposes on the path followed by the light beam to interrupt it. This variant has the advantage of avoiding turning off the light sources to stop transmitting the final beam using the main projector. For example, an on / off button is arranged in a cockpit. This button is connected to a diaphragm arranged on the path followed by the light beam. At startup, the light sources and in particular the laser diodes are electrically powered by the electrical circuit of the aircraft. In the on position, the on / off button opens a diaphragm to let the light beam through. Conversely in the off position, the on / off button closes the diaphragm to block the light beam.
    [0021] Another button can then control the optical processing system. Finally, a control member may optionally control the light sources to adjust the light intensity or the color of the light beam. Similarly, the main projector may include an inhibiting device for inhibiting the light beam and / or the final beam within the main optical head. The inhibiting device may comprise a diaphragm or the like.
    [0022] In addition and for example in the context of a search beacon, the main projector may comprise a mobility system including at least one motor connected to the main optical head to move the main optical head and the final beam emitted by the main projector. The invention makes it possible to obtain a main optical head of small dimensions. Therefore, a small motor can also be used to move the main optical head into space.
    [0023] The invention is therefore particularly advantageous in the context of a main projector acting as searchlight. Furthermore, the lighting system may comprise at least one projector called "secondary projector" optically connected to at least one laser diode of the light generator, said secondary projector having an optical head called "secondary optical head" emitting an illuminating beam having a spectrum comprising only one or more lines of the spectrum of the beam transmitted by the light generator.
    [0024] Each secondary projector may also be connected to a light-emitting diode-type light source. For convenience, the term "secondary" refers to a constituent part of a secondary projector. Indeed, the invention makes it possible to use the laser diodes of the light generator not only to operate a main projector but also other projectors. For example, the secondary headlamps may be position lights or flashing anti-collision light.
    [0025] As a result, each secondary projector comprises a secondary optical head emitting a final beam called "illuminating beam" corresponding to the received beam. This received beam may be an initial beam from a single laser diode or a light beam from a combiner cooperating with a plurality of laser diodes. For example, a position light is powered directly by a green laser diode and another light by a red laser diode. On the other hand, a white anti-collision light is powered by the internal light combiner. Thus, for example, the light generator may comprise at least one secondary projector mirror for sharing a beam into a reflected beam directed to the secondary projector and an incident beam used for the main projector. In addition, the secondary optical head may comprise an optical processing device comprising at least one of the following organs: an inhibition member for inhibiting the illuminating beam emitted by the secondary optical head, a zooming system.
    [0026] For example, an anti-collision light conventionally emits a flashing white light. An inhibit member is used to flash the secondary projector. For example, an optical cache sequentially blocks the final beam generated in the optical head of the secondary projector 25 or the beam transmitted to the optical head by the light generator. The zoom system may be of the type of the zoom device described above.
    [0027] 3034079 18 A bandpass filter can also be implemented. Moreover, the aircraft may comprise a drone flying outside the fuselage, at least one projector being carried by said drone.
    [0028] For example, the light generator has an exit opening on the outside of the aircraft and directed towards the projector carried by the drone. This characteristic makes it possible to illuminate an area remote from the fuselage of the aircraft.
    [0029] The invention and its advantages will appear in more detail in the following description with examples given by way of illustration with reference to the appended figures which represent: FIG. 1, a view of an aircraft according to the invention FIG. 2 is a view showing an aircraft comprising two non-limiting light generators; FIG. 3 is a diagram explaining a lighting system according to the invention, and FIG. an aircraft comprising at least one UAV. The elements present in several separate figures are assigned a single reference. Figure 1 shows an aircraft 1 according to the invention. This aircraft 1 comprises a fuselage 2 which extends longitudinally from a nose 3 to a tail 400. In addition, the fuselage 2 is carried by a landing gear 4. This aircraft 1 is 3034079 19 for example a rotorcraft, the fuselage 2 carrying at least one rotary wing 5 provided with a plurality of blades 6. This aircraft 1 is provided with a lighting system 10. The lighting system 10 comprises a plurality of projectors 20.
    [0030] In particular, the lighting system comprises a projector 20 called "main projector 21". This main projector 21 is favorably a beacon of research. In addition, the lighting system may comprise at least one projector 20 called "secondary projector 15". For example, the lighting system comprises at least one of the following secondary projectors located outside the fuselage EXT: a secondary headlamp 15 of the right position lamp 22, a secondary headlamp 15 of the left position light 23, a secondary floodlight 15 of the anti-collision light type 24, a secondary floodlight 15 of the landing light type 250. At least one secondary floodlight may comprise a member arranged inside the fuselage, such as a straightener or an illuminating organ a bunker for example. Furthermore, the lighting system 10 further comprises at least one light generator 30 arranged in the fuselage. Indeed, the light emitted by the projectors 20 is not produced within the projectors, but within at least one centralized light generator 30. Therefore, each projector can have an optimized dimension.
    [0031] On the other hand, the lighting system may further include a control system 90 for controlling the emission of light.
    [0032] FIG. 3 illustrates a lighting system provided with at least one light generator 30. In particular, FIG. 3 shows a single light generator 30. However, and with reference to FIG. 2, at least two generators of light can be implemented. Referring to Figure 3, a light generator 30 includes a housing 350 containing a plurality of members. In particular, the light generator is provided with at least two light sources each emitting a light beam 10 called "initial beam 100". At least two light sources respectively comprise two laser diodes 35 which are different from each other by emitting respectively two initial beams having different wavelengths. In addition, each initial beam 15 is a quasi-monochromatic beam. For example, the light generator 30 comprises at least one laser diode 36 emitting an initial beam of green color, a laser diode 37 emitting an initial beam of red color, a laser diode 38 emitting an initial beam of blue color, a diode laser 39 emitting an infrared initial beam. At least one laser diode may for example be of the type known under the name OSRAM PLTB450B and visible on the Internet at the following address: http://www.osramos.com/Graphics/XPic1/00088311 0.pdf / PL 20TB450B.pdf%.
    [0033] The figures represent only light sources of the diode laser type. However, at least one light source may comprise a light emitting diode.
    [0034] In addition, the light generator 30 has a power supply 81 connected to an electrical circuit 82 of the aircraft. This power supply 81 is electrically connected to each light source to transmit an electric current 5 to each light source. Optionally, a switch 300 makes it possible to cut the power supply of all the light sources. Such a switch can be controlled by a member called "first member 91" of a control system 90 which is maneuverable by an individual. Such a body of the control system may comprise a push button, a rotary knob, a translative button, a toggle button, a touch screen, a computer pointer, an input means, a voice control system, etc. The links connecting each member of the control system to the controlled object are not shown so as not to unnecessarily increase the size of FIG. 3. Alternatively or additionally, the control system 90 may comprise a member designated as second "member 92" for control at least one light source individually.
    [0035] In another aspect, the light generator 30 may include a cooling system 80 to prevent overheating of this light generator during operation of the light sources and in particular the laser diodes 35. For example, the cooling system 80 comprises at least one fan discharging heat towards the outside of the light generator 30. To transmit a light to the main projector 21, the light generator comprises at least one optical light combiner 40 called "internal light combiner 41" for mix at least two initial beams. Usually, such a light combiner may comprise one or more mirrors 42.
    [0036] For example, the internal light collimator may comprise a plurality of mirrors each reflecting only one wave having a given wavelength. Therefore, the internal light combiner 41 combines at least two initial beams to generate a light beam 101. Such a light beam 101 may be a white polychromatic beam. The light beam 101 is then directed towards at least one optical output 45 of the light generator 30, in particular an optical output cooperating with the main projector 21. Optionally, the light generator 30 comprises an optical injector 75. The optical injector 75 is interposed between the internal light combiner 41 and the optical output 45 to focus the light beam 101 to the optical output. A conventional ball or convex lens optical injector may be used. Furthermore, the light generator 30 is optionally equipped with an inhibition system 83 to inhibit the light beam 101, namely to interrupt the transmission of the light beam to the optical output. For example, the muting system 83 includes a diaphragm 83 'or a movable mask controlled by a member called "third member 93" of the control system operable by an individual. The first member 91 controlling the power supply 30 may also be an element of the inhibition system 83.
    [0037] In particular, an optical output 45 directs the light beam 101 to an optical input 50 of the main projector. For example, the light beam 101 travels at least within an optical fiber connection 70 between the light generator 30 and the main projector 21. Nevertheless, such a optical fiber 3034079 23 connection can be omitted depending on the path to travel, the light beam 101 can circulate in the air. The main projector 21 then comprises an optical head 55 called "main optical head 60" to receive this light beam 101. The main optical head 60 processes the light beam 101 to emit a beam of light called "final beam 102" having a shape geometric 103 adjustable. Optionally, the main optical head does not change the color of the light beam, the spectrum of the final beam 10 having only one or more lines of the spectrum of the light beam. Nevertheless, the main optical head may possibly filter the light beam using a bandpass filter. The final beam then has a wavelength spectrum having a lower number of wavelength lines, compared to the number of lines of the wavelength spectrum of the light beam and / or a wavelength spectrum. having an identical line but at a lower intensity than the intensity of the same line in the wavelength spectrum of the light beam. Thus, a filter can suppress at least one ray of the spectrum of the light beam, and / or reduce the intensity of at least one ray of the spectrum of the light beam. Independently of the variant and to process the light beam 101, the main optical head 60 includes an optical processing system 65. This optical processing system 65 comprises for example a zooming device 66 arranged downstream of the optical input 50 of the main projector.
    [0038] For example, the zooming device 66 has a system of movable lenses 66 'for adapting the geometrical shape 103 of the final beam 102. A manual or electric moving system 67 can move at least one lens 66'.
    [0039] For example, the displacement system 67 is provided with an electric actuator of adjustment controlled by a member called "fourth member 94" of the control system 90. This electric actuator can be powered by the electric circuit 81 with the aid of electric cables of small sections.
    [0040] The zooming device may for example be of the optotune® type. In addition, the optical processing system 65 presented comprises a light collimator 40 called "remote light collimator 43" which is arranged downstream of the optical input 50, and upstream of the zooming device 66. For example, a such collimator comprises a lens tending to widen the light beam or to make it parallel. An inhibition device 84 may furthermore inhibit the light beam 101 and / or the final beam 102 within said main optical head 60 on the order of a member designated "fifth member 95" of the control system 90. inhibition may comprise a diaphragm or a moving mask for example. Furthermore, the main projector 21 schematically comprises a mobility system 85 for rotating the main optical head 60 around at least one axis AX1, AX2, AX3, or around three axes.
    [0041] As a result, the mobility system is provided with at least one motor 86 fixed to the main optical head 60. This electric motor 86 can be powered electrically by the electric circuit 81 by means of cables of small sections. In addition, the mobility system can be controlled by a member called "sixth member 96" of the control system 90. In addition to a main projector, the lighting system 10 may comprise at least one projector 20 called "secondary projector 15" . Each secondary projector is optically connected to at least one laser diode 35 of the light generator 30. A secondary projector 15 has an optical head 55 called a "secondary optical head 25". This secondary optical head emits a beam called "illuminating beam 104" to be distinguished from the beam called "final beam" emitted by the main optical head 15. The illuminating beam emitted by a secondary optical head then has a spectrum comprising only one or more lines of the spectrum of the beam transmitted by the light generator 30 to this secondary optical head. A secondary optical head 25 of a secondary projector 15 may comprise an optical processing device 26 comprising at least one of the following members: an inhibition member 27 for inhibiting the illuminating beam 104 emitted by the optical head of the secondary projector 15, However, the optical processing device 26 may comprise a bandpass filter for suppressing at least one line of the spectrum of the beam transmitted by the light generator 30, and / or for reducing the intensity of the beam. at least one line of the spectrum of the beam transmitted by the light generator 30.
    [0042] At least one member called "seventh control member 97" of the control system 90 can control at least one piece of equipment of the optical processing device. In addition, each equipment of the optical processing device may be of the type described in the context of the optical processing system of the main optical head. Similarly, a secondary projector may include a mobility device for moving the secondary optical head relative to the fuselage.
    [0043] For example, at least one mirror 310 makes it possible to split at least one initial beam 100 upstream of the internal light combiner 40. Thus, an optical output can be optically supplied by an initial beam coming from the laser diode 36 emitting an initial beam of green color.
    [0044] The optical output feeds, for example, a right-side position-type secondary projector 22. Similarly, an optical output may be optically supplied by an initial beam coming from the laser diode 37 emitting an initial red-colored beam to supply, for example, a Left side position light projector 23. Furthermore, the light beam 101 can be split in two downstream of the internal light combiner 40 to supply the main projector 21 and a secondary headlamp type landing light 250 or fire collision.
    [0045] An anti-collision fire may include an optical processing system for flashing. This optical processing system is arranged in the light generator or in the secondary optical head of this anti-collision light.
    [0046] A landing beacon may include an optical processing system including a zoom and a muting member controlled by a member 95 of the control system to turn off or light the landing light.
    [0047] Thus, at the start of the aircraft, a pilot can use the first member 91 to operate the light generator 30. The light sources then each emit an initial beam. In the absence of dedicated inhibiting means, the secondary projectors serving as position lights 22, 23 light up. On the other hand, the main projector 21 does not emit light. Indeed, this emission of light can be blocked according to the variant by the inhibition system 83 within the light generator, or within the main optical head by the inhibition device 84. Similarly, a lighthouse landing can be neutralized. On the other hand, the anti-collision fire can be active. The pilot then operates the control system to turn on or off the landing lights or the main spotlight as required. Thus, the light generator is active at startup. This light generator generates at least one light flux transmitted to at least one optical head. Each optical head emits this light flux to the outside of the device, without adding any line to the spectrum of the light flux. To prevent the propagation of light from at least one projector, the lighting system comprises at least one member capable of blocking the propagation of light, within the light generator and / or within an optical head. .
    [0048] FIG. 4 shows a particular embodiment of the invention. According to this embodiment, the aircraft 1 comprises at least one drone 200 flying outside the fuselage, more precisely two drones in FIG. 4. At least one searchlight 20 is carried by the drone 200. The light generator then transmits a light transmitted to the projector through an airspace 500, this light being in turn transmitted by the drone through the projector. Optionally, the light generator emits light to a drone via a main projector or a secondary projector. Naturally, the present invention is subject to many variations as to its implementation. Although several embodiments have been described, it is well understood that it is not conceivable to exhaustively identify all possible modes. It is of course conceivable to replace a means described by equivalent means without departing from the scope of the present invention.
    权利要求:
    Claims (17)
    [0001]
    REVENDICATIONS1. Aircraft (1) having a fuselage (2) and a lighting system (10), said lighting system (10) comprising at least one projector (20) called "main projector (21)" located at the outside (EXT) of the fuselage (2) of said aircraft (1), characterized in that said lighting system (10) comprises at least one centralized light generator (30) arranged inside (INT) of said fuselage (2), said light generator (30) comprising a plurality of light sources which includes at least two laser diodes (35) each emitting a beam of light said "initial beam (100)" to a light combiner (40) of light generator (30) said "internal light combiner (41)", at least two laser diodes respectively emitting two beams of different wavelengths, said internal light combiner (41) generating from said initial beams (100) a light beam (101) directed towards an optical output (45) of said light emitter (30), said optical output (45) directing said light beam (101) to an optical input (50) of the main projector (21), said main projector (21) comprising an optical head (55) main optical head (60) ", said main optical head (60) including an optical processing system (65) which transforms a geometric shape of the light beam (101) transmitted by the light generator (30) to emit outwardly ( EXT) of the main optical head (60) a light beam called "final beam (102)" having an adjustable geometrical shape (103), a spectrum of the final beam comprising only one or more lines of the spectrum of the light beam.
    [0002]
    2. Aircraft according to claim 1, 3034079 characterized in that each optical output (45) is connected to said optical input (50) by at least one optical fiber connection (70).
    [0003]
    3. Aircraft according to any one of claims 1 to 2, characterized in that said light generator (30) comprises an optical injector (75) interposed between said internal light combiner (41) and said optical output (45) .
    [0004]
    4. Aircraft according to any one of claims 1 to 3, characterized in that said optical processing system (65) comprises a zooming device (66) downstream of said optical input (50).
    [0005]
    5. Aircraft according to any one of claims 1 to 4, characterized in that said optical processing system (65) comprises a light collimator (40) said "remote light collimator (43)" downstream of said optical input (50). 15
    [0006]
    6. Aircraft according to claim 5, characterized in that said remote light collimator (43) is arranged upstream of a zoom device (66).
    [0007]
    Aircraft according to any one of claims 1 to 6, characterized in that said light generator (30) comprises a cooling system (80).
    [0008]
    8. Aircraft according to any one of claims 1 to 7, characterized in that said light generator (30) comprises a power supply (80) adapted to be connected to an electrical circuit (81), said power supply (80) being connected to each light source. 3034079 31
    [0009]
    9. Aircraft according to any one of claims 1 to 8, characterized in that said light generator (30) comprises an inhibition system (83) for inhibiting said light beam (101).
    [0010]
    10. Aircraft according to any one of claims 1 to 5 9, characterized in that said light beam (101) is a white color beam.
    [0011]
    11. An aircraft according to any one of claims 1 to 10, characterized in that said main projector (21) comprises an inhibition device (84) for inhibiting said light beam (101) and / or the final beam (102). ) within said main optical head (60).
    [0012]
    12. Aircraft according to any one of claims 1 to 8, characterized in that said main projector (21) comprises a mobility system (85) including at least one motor (86) connected to said main optical head (60) to move this main optical head (60) and the final beam (102) emitted by the main projector (21).
    [0013]
    13. Aircraft according to any one of claims 1 to 12, characterized in that said lighting system (10) comprises at least one projector (20) called "secondary projector (15)" optically connected to at least one diode laser (35) of said light generator (30), said secondary projector (15) having an optical head (55) said "secondary optical head (25)" emitting an illuminating beam (104) having a spectrum comprising only one or several lines of the spectrum of the beam transmitted by the light generator (30).
    [0014]
    14. Aircraft according to claim 13, characterized in that said secondary optical head (25) of a secondary projector (15) comprises an optical processing device (26) comprising at least one of the following organs: a muting member (27) for inhibiting the illuminating beam (104) emitted by the optical head of the secondary projector (15), a zoom system (29).
    [0015]
    15. Aircraft according to any one of claims 1 to 14, characterized in that said main projector (21) is a searchlight. 15
    [0016]
    16. Aircraft according to any one of claims 1 to 15, characterized in that said aircraft (1) comprises a drone (200) flying outside the fuselage, at least one projector (20) being carried by said drone ( 200). 20
    [0017]
    17. Aircraft according to any one of claims 1 to 16, characterized in that said final beam (102) and said light beam (101) have the same wavelength spectrum.
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    同族专利:
    公开号 | 公开日
    EP3072818B1|2017-08-16|
    FR3034079B1|2018-09-07|
    EP3072818A1|2016-09-28|
    引用文献:
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    ES2775573T3|2013-03-15|2020-07-27|Thomas Liolios|Eye-safe laser lighting in ophthalmic surgeries|US10372127B2|2016-07-18|2019-08-06|International Business Machines Corporation|Drone and drone-based system and methods for helping users assemble an object|
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    法律状态:
    2016-03-21| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-30| PLSC| Publication of the preliminary search report|Effective date: 20160930 |
    2017-03-22| PLFP| Fee payment|Year of fee payment: 3 |
    2018-03-23| PLFP| Fee payment|Year of fee payment: 4 |
    2020-03-19| PLFP| Fee payment|Year of fee payment: 6 |
    2021-03-23| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1500616A|FR3034079B1|2015-03-27|2015-03-27|LIGHTING SYSTEM OF AN AIRCRAFT AND AIRCRAFT|
    FR1500616|2015-03-27|FR1500616A| FR3034079B1|2015-03-27|2015-03-27|LIGHTING SYSTEM OF AN AIRCRAFT AND AIRCRAFT|
    EP16162280.8A| EP3072818B1|2015-03-27|2016-03-24|Flying system provided with an aircraft and a drone comprising a remote projector|
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