User guidance assistance system for focusing on or observing a specific area of ​​interest

Description

technical field

[0001] The present invention relates to the field of guidance assistance systems.

[0002] The object of the present invention relates more particularly to a guidance assistance system enabling the display of real-time visual information to help a user observe a specific area of ​​interest or navigate towards a specific area of ​​interest.

[0003] For the purposes of this invention, "area of ​​interest" means, throughout the following description, any area of ​​interest to the user; this could be, for example, a final destination such as a meeting point, a finish line, or a runway. It could also be a route, a predefined path, or one or more stages along a predefined route. It could also be a target, a point, or a person to be observed or monitored. It will be understood here that, generally, this area of ​​interest is defined by a set of spatial coordinates.

[0004] The present invention has many advantageous applications in the field of sport and in particular extreme sports or sliding sports such as parachute jumping, paragliding, downhill mountain biking, skiing, car rallying, etc.

[0005] The present invention also finds many other advantageous applications in other activities such as for piloting a vehicle (airplane or other) or for interventions by firefighters or military personnel in a hostile environment. Previous art

[0006] Remote interfaces are known in prior art; these remote interfaces are by definition located outside the user's field of vision and require a head movement from the user to be consulted.

[0007] It's easy to understand that using such interfaces isn't feasible for certain applications, such as extreme sports. Athletes need to be focused on their activity to avoid accidents; the same is true for firefighters or soldiers during operations, as neither can use their hands to interact with the screen.

[0008] We know of other types of interfaces in prior art that are located within the user's field of vision.

[0009] In aviation and more recently in the automotive industry, such interfaces take the form of head-up display devices also known by the acronym HUD (from the English "Head Up Display").

[0010] These head-up display devices most often incorporate augmented reality display means which allow the user to receive additional information such as extrinsic information about the vehicle's environment.

[0011] Displaying this extrinsic information often contributes to vehicle safety and allows the driver or pilot to understand the environment in which it is operating by improving their perception of the environment.

[0012] Thus, in the automotive field, we already know of certain ADAS systems (from the English "Advanced Driver-Assistance System" or in French "Système d'aide à la conduite avancé") which are equipped with an on-board camera and which are configured to display on a screen, for example a head-up display or HUD, an element of the road environment such as, for example, a road sign from the road environment and / or a pictogram representing a vehicle traveling in front of said vehicle or a detected danger.

[0013] Other helmets or glasses incorporating a screen are also known, such as those offered in documents EP3028121B1, FR3061312A1, FR3017966A1, US2003 / 0184868A1, US6,394,601B1 or FR 2806312A1.

[0014] These devices therefore provide additional information either offset from or superimposed on the user's field of vision.

[0015] However, the principle of superimposing additional information in a user's field of vision makes the use of this type of device unsuitable for certain applications.

[0016] The Applicant submits that intensive activities, such as extreme sports or interventions by security forces, require the provision of simple and intuitive information for the user. This information must not obstruct the user's field of vision and must be usable without excessive cognitive load. Indeed, explicit information, numbers, and letters require the user to detach their attention from the activity on which they are focused.

[0017] It is also preferable that the helmet be light and compact in order to avoid hindering the practice or creating discomfort or fatigue on the user's neck.

[0018] It is also preferable that calculation times be very short, particularly to provide real-time information and ensure good energy autonomy.

[0019] The Applicant respectfully submits that prior art solutions are unsatisfactory and do not offer a system that is both ergonomic and lightweight, requires minimal computing resources, and provides the user with reliable and intuitive visual information without obstructing their field of vision or hindering their practice. Other solutions for navigating a user to an area of ​​interest are known from US 2017 / 287441 A1, US 10 012 506 B1, and JP 2005 069759 A. Summary of the invention

[0020] The present invention aims to improve the situation described above.

[0021] One of the objectives of the present invention is in particular to remedy the various disadvantages mentioned above by offering a solution to help guide a user moving towards or observing an area of ​​interest.

[0022] For this purpose, the object of the present invention relates, in a first aspect, to a system for assisting the guidance of a user moving towards or observing a defined area of ​​interest according to claim 1.

[0023] In another advantageous embodiment of the present invention, the optical viewing screen is provided with engravings and / or inclusions formed in the screen, for example vertically and / or horizontally, to conduct the light emitted by at least one light source onto the screen, preferably towards the center of the field of vision so as to recenter the information so that it is less in the peripheral vision area.

[0024] According to the invention, the control unit is intended to be configured to control the light sources in such a way as to form a virtual reticle in the user's field of vision.

[0025] It is understood here that the light sources are selectively activated on the peripheral perimeter of the viewing window so as to interpose themselves with each other to cross and form a virtual reticle in the axis of the user's field of vision, such a virtual reticle precisely indicating the direction / orientation of the target area to be observed or reached.

[0026] This is referred to as a virtual reticle because the light sources are located on the periphery of the viewing window and do not come from the central axis of the user's field of vision. The presence of these selectively activated light sources at the periphery allows for the formation of a non-real reticle, which is perceived by the user's brain through extrapolation of the light sources. This reticle is fictitiously formed by the user's brain within the field of vision without hindering their concentration or vision.

[0027] Preferably, at least one sensor is a position sensor and / or an azimuth sensor and / or a tilt sensor and / or an accelerometer.

[0028] Such a sensor thus makes it possible to retrieve information relating to the relative position of the viewing window with respect to the area of ​​interest, the azimuth and / or the tilt of the viewing window.

[0029] Advantageously, the display device includes wireless communication means configured to communicate with an external entity in order to retrieve at least one piece of external information relating to the user's external environment.

[0030] Advantageously, the display device includes acquisition means configured to acquire at least one system status information.

[0031] Preferably, the control unit is configured to control each of the light sources in intensity and / or color.

[0032] Preferably, the plurality of light sources includes an LED or OLED strip.

[0033] Preferably, the plurality of light sources includes an optical fiber.

[0034] Correspondingly, the object of the present invention relates, according to a second aspect, to a face support intended to be worn directly or indirectly on the user's head and comprising a guidance aid system as described above in which the viewing window is assembled securely to said face support.

[0035] Advantageously, the face support consists of a pair of glasses, a mask, or a helmet. It is understood here that the face support can also take the form of a visor, for example.

[0036] Advantageously, the face support is provided with at least one strap to hold said support in position on the head of said user.

[0037] Thus, the object of the present invention, through its various functional and structural aspects described above, makes it possible to provide reliable real-time guidance information to the user to guide them or direct their gaze towards a predetermined area of ​​interest. Description of the figures

[0038] Other features and advantages of the present invention will become apparent from the description below, with reference to figures 1 to 9 attached, which illustrate various examples of implementation without being exhaustive, and on which: [ Fig.1 ] There figure 1 represents a first schematic view of a guidance assistance system according to an example of an embodiment of the present invention; [ Fig. 2 ] There figure 2 represents a second schematic view of the guidance assistance system conforming to the figure 1 ; Fig.3 ] There figure 3represents a schematic view of a guidance assistance system according to another embodiment of the present invention; [ Fig. 4 ] There figure 4 represents a schematic view of a guidance assistance system according to another embodiment of the present invention; [ Fig. 5 ] There figure 5 represents a schematic view of a guidance system forming a reticle in the user's field of vision; Fig. 6 ] There figure 6 represents a schematic view depicting the use of a guidance assistance system according to the invention for carrying out an activity with multiple users; [ Fig. 7 ] There figure 7 represents a schematic view depicting the use of a guidance aid system according to the invention for a construction site containing hazards; Fig. 8 ] There figure 8schematically illustrates the guidance information display device integrated into the guidance assistance system according to a particular embodiment of the present invention; and [ Fig. 9 ] There figure 9 illustrates a flowchart of the different stages of a process implemented by a device conforming to the figure 8 . Description of examples of achievements

[0039] A guidance assistance system 100 and its associated process will now be described in what follows, with joint reference to figures 1 to 9 .

[0040] The same elements are identified with the same reference symbols throughout the description that follows.

[0041] As explained in the preamble, behaviors are becoming digitalized and increasingly benefiting from the valorization of data, particularly geolocated data.

[0042] However, the technologies known so far that allow access to augmented reality exclude users under constraints whose safety depends essentially on simple and intuitive information, such as people practicing extreme sports or firefighters or security forces.

[0043] The Applicant observes that a person practicing an extreme sport, such as skydiving or mountain biking, must have access to reliable and easily processed information without hindering their activity, i.e., without having to handle a dedicated device or focus on anything other than their trajectory. This person must be able to concentrate on their activity and obtain simple information that primarily answers the following questions: "Where should I go?", "Where is the danger?", and in certain situations, "Where are the others?".

[0044] The Applicant submits that head-up display (HUD) devices and augmented reality headsets are not suitable for these issues and suffer in particular from their high level of technology; thus, current solutions present the following disadvantages: They require precise adjustments (interpupillary distance, binocular diopter, etc.), they are heavy and bulky, they require energy, they are expensive, they are likely to shift from the axis of vision in case of shocks and offer erroneous guidance, they are sensitive to fog, smoke, and the presence of dust.

[0045] The Applicant further submits that prior art solutions do not provide the user with simple and directly usable information to answer the above questions.

[0046] The system 100 proposed here within the framework of the present invention achieves this objective.

[0047] To achieve this, the concept underlying the present invention is to guide the user's gaze and practice by exploiting human reflexes of attention and hypervigilance through the embedding of luminous points in the periphery of the user's field of vision.

[0048] The exploitation of the peripheral field of vision is characteristic of the present invention.

[0049] Such exploitation of the peripheral field of vision allows for peripheral visual awareness of the user, which is considered the ability to be aware without being distracted by a significant amount of information in relation to the particular setting and the task at hand.

[0050] Physiologically, we know that the peripheral vision zone represents 80% of the retinal surface but only 20% of the optic cells. The peripheral vision field therefore allows for a process of vigilance over a large area, with blurred and light-deficient vision, without distracting from the main task.

[0051] It is also known that stressful situations (as is the case in the present invention) stimulate the nervous system, which, among other things, causes pupil dilation. This pupil dilation allows more light to enter and reach a larger area of ​​the retina, thus providing a broader range of information about the environment.

[0052] It is therefore this peripheral field of vision that we seek to use to provide the user with simple and intuitive information without distracting them from their concentration.

[0053] The present invention provides, in the example of Figures 1 And 2 , which illustrate a particular and non-limiting example of the present invention, the implementation of a guidance assistance system 100 for a user U heading towards an area of ​​interest, here denoted T (for " target ".

[0054] This area of ​​interest T can correspond, for example, to a meeting point or rallying point, a finish line, a stage on a route, a particular point to observe, a danger zone to avoid, etc.

[0055] Here, this area of ​​interest T is therefore defined by spatial coordinates that are known.

[0056] System 100 includes a device 10, referred to here as a display device, which includes an electronic card having at least one memory 27.

[0057] The coordinates of the area of ​​interest T are recorded beforehand during a step S0 in this memory 27.

[0058] In this example, the at least one memory 27 corresponds for example to volatile and / or non-volatile memory and / or includes a memory storage device which may include volatile and / or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

[0059] As stated previously, one of the objects of the present invention is to provide easily usable information enabling the user U to be guided in real time and intuitively to this area of ​​interest T without being hindered in the performance of their activity. In this example, and as illustrated in figure 1 And 2 , the system 100 integrated directly or indirectly into a facial support 200 presented in the form of a mask such as a ski mask.

[0060] In the example the figure 2, such a mask 200 is equipped with a strap 14 intended to hold the mask 200 in position around the head of the user U.

[0061] In this example, the strap 14 is further provided with adjustment means 14a allowing the diameter of the strap 14 to be adjusted to fit the size of the user's head U.

[0062] In this example, we use a classic 200 mask whose general structure follows the anatomy of the user's face U.

[0063] In this example, the system 100 integrated into the mask 200 therefore includes a viewing window 11 delimited by the peripheral perimeter 12 which here corresponds to the frame of the mask 200.

[0064] The peripheral perimeter 12 of this window 11 defines here the peripheral field of vision of the user U.

[0065] In this example, an optical viewing screen 13 is provided, here a protective screen, covering the field of vision and allowing the eyes of the user U to be protected.

[0066] Such a 13-inch screen may also include an anti-fog treatment, an anti-ultraviolet filter and / or an anti-reflective treatment to improve user comfort.

[0067] In this example, and as illustrated in Figures 1 And 2 The peripheral perimeter 12 is equipped with a plurality of light sources 21. These light sources 21 are therefore located at the periphery of the user's field of vision U and are not likely to interfere with their perception of space. They therefore remain visible without obstructing vision (i.e., without entering the central axis of the user's field of vision).

[0068] In the example illustrated in Figures 1 And 2, the light sources 21 extend at regular intervals along this peripheral perimeter 12.

[0069] Here, the light sources 21 are formed by a strip of LEDs (from the English "Light-Emitting Diode" or in French "Diode électroluminescente") or OLEDs (from the English "Organic Light-Emitting Diode" or in French "Diode électroluminescente organique").

[0070] Other types of light sources 21 can also be considered here by a person skilled in the art, such as optical fiber.

[0071] One of the concepts underlying the present invention is to use these sources 21 to indicate outside the main axis of the user's field of vision U (but on the periphery thereof) the preferred direction to follow to reach the area of ​​interest T.

[0072] This is made possible by an intelligence embedded in the system 100.

[0073] This intelligence resides more specifically in the device 10, which includes, but is not limited to, embedded electronic equipment such as an electronic computer (an ECU for "Electronic Control Unit," a smartphone, a tablet, or a laptop). The elements of the device 10, individually or in combination, can be integrated into a single integrated circuit, into several integrated circuits, and / or into discrete components. The device 10 can be implemented as electronic circuits or software (or computer) modules, or a combination of electronic circuits and software modules.

[0074] In this example, the device 10 includes one (or more) processor(s) configured to execute instructions for carrying out the steps of the process and / or for executing instructions from the software embedded in the device 10. The processor may include integrated memory, an input / output interface, and various circuits known to a person skilled in the art.

[0075] The computer code of the embedded software(s) including the instructions to be loaded and executed by the processor is, for example, stored on memory 27.

[0076] In the example described here, the device 20 further includes a control unit 22 capable of controlling the sources 21 independently of each other.

[0077] In this example, the integration of at least one sensor 23, such as an azimuth sensor, a tilt sensor, and / or a position sensor, is also planned. Such a sensor 23 is capable of capturing, during a step S1, spatial information I1 relating to a position and / or orientation of the viewing window (11) with respect to said area of ​​interest T.

[0078] The sensor 23 therefore measures a value representative of the relative position of the mask (i.e. the inclination / orientation / position of the user's gaze) in relation to the area of ​​interest T to be reached.

[0079] This spatial information I1 is then transmitted to the processing circuit 24 (here for example a computer) which during a step S2 will process this spatial information I1 according to the area of ​​interest T (here the spatial coordinates of the area of ​​interest T recorded in memory 27) in order to determine a guidance information I2.

[0080] This information I2 aims to determine a guidance vector to direct the gaze of the user U so that he observes or moves towards the area of ​​interest T.

[0081] This guidance information I2 is then sent to the control unit 22 so that it can selectively control each of the light sources 21 according to this guidance information I2 so that, during step S3, it displays in the periphery of the user's field of vision a direction to follow so that the user moves towards said area of ​​interest T.

[0082] We understand here that the light sources 21 will light up according to this guidance information I2 determined by the processing circuit 24.

[0083] This selective control of the light sources 21 outside the central axis of the user's field of vision but at the periphery of it allows the user U to be guided towards the area of ​​interest T without disturbing him.

[0084] Thus, as illustrated in figure 5 The light sources are activated at the periphery of the user's field of vision, forming a virtual reticle within that field. The user then simply follows the direction indicated by the virtual reticle, focusing their gaze on the imaginary intersection of two light beams formed by the two pairs of activated light sources.

[0085] It will be understood here that this information evolves in real time with the movement of the head and therefore of the central axis of vision of the user.

[0086] Displaying simple visual information at the periphery of the user's field of vision according to the direction of gaze and the user's position is characteristic of the present invention.

[0087] Displaying this information in the peripheral vision area allows the user to orient themselves intuitively in space.

[0088] Several other examples of alternative implementations are described and illustrated in figures 3 and 4 .

[0089] In figure 3 we find all the characteristics of Figures 1 And 2 described above. However, the positioning and arrangement of the light sources 21 are very slightly different from the example of Figures 1 And 2 .

[0090] Here, the light sources 21 are integrated directly into the screen 13.

[0091] These sources 21 are inserted into one or more layers and at different distances from the central axis of vision between or on the different sheets composing the screen 13.

[0092] In this example, the sources 21 extend only along the lateral edges of the screen 13 so as to limit their obstruction of the field of vision. It can therefore be considered that the sources 21 remain at the periphery of the field of vision within the meaning of the present invention and do not enter the central axis of the field of vision.

[0093] In figure 4 Another example of this achievement is illustrated.

[0094] In this device, one or more light sources 21 are included at a specific position, for example, in the upper left corner of the user U's field of vision. Such inclusion can be achieved, for example, by one or more optical fiber light guides and allows the light to be reflected towards the central line of sight of the user U. Such a light source 21 included in the screen 13 can carry important information such as information relating to an imminent danger.

[0095] In an advantageous embodiment not illustrated here, it is possible to form in the optical viewing screen 13 rectilinear engravings and / or inclusions formed for example vertically and / or horizontally in the screen 13 in order to conduct the light emitted by at least one light source 21 onto the screen 13.

[0096] Thanks to these engravings / inclusions made in the screen 13, it is possible to form in the field of vision a real reticle in the axis of the user's field of vision which allows the user to be guided precisely towards the T zone.

[0097] In order to enrich the visual information communicated to user U, it is planned to provide other information and to take into account the external environment (presence of a danger for example) and any other users U' who are located near user U.

[0098] It is therefore planned to equip device 20 with wireless communication means 24 to communicate with other external entities, for example another system 100' of another user U' ( figure 6 ), a remote server, the "cloud", an entity 300 such as a truck ( figure 7) likely to represent a danger or a marker indicating a danger zone not to be crossed on a construction site.

[0099] These communication means 24 are therefore capable of communicating with one or more external devices 100' and / or 300 and include one or more radio frequency (RF) interfaces, for example, Bluetooth® or Wi-Fi®, LTE (Long-Term Evolution), or LTE-Advanced. Thus, data can, for example, be uploaded to device 10 via the communication interface 24 using a Wi-Fi® network such as IEEE 802.11, an ITS G5 network based on IEEE 802.11p, or a mobile network such as a 4G (or LTE Advanced according to 3GPP release 10) or 5G network, including an LTE-V2X network.

[0100] The information I3 collected by these wireless communication means 24 is transmitted to the processing circuit 24 and is analyzed to be taken into consideration in determining the guidance information I2. For example, the presence of a danger or an obstacle on the user's route U can thus be taken into consideration to recalculate another route in order to reach the area of ​​interest T.

[0101] To further secure the system, an additional camera 26 can be integrated, capable of capturing representative I5 images of the environment. These I5 images can then be processed by image processing algorithms to detect potential hazards or obstacles.

[0102] One can also plan for the integration of one or more LIDAR(s) (from the English "Light Detection And Ranging", or "Detection and estimation of distance by light" in French) arranged on the helmet; a LIDAR sensor here corresponds to an optoelectronic system composed of a laser emitter device, a receiver device including a light collector (to collect the part of the light radiation emitted by the emitter and reflected by any object located in the path of the light rays emitted by the emitter) and a photodetector which transforms the collected light into an electrical signal; a LIDAR sensor thus makes it possible to detect the presence of objects located in the emitted light beam and to measure the distance between the sensor and each detected object, in order to retrieve points representative of an obstacle or a danger on the user's path.

[0103] Information from this camera 26 or the LIDAR(s) is sent directly to the processing circuit 24 for analysis and consideration in determining the guidance information I2.

[0104] Information I3 and / or I5 from these wireless communication means 24 and / or from the camera 26 and / or from the LIDAR(s) can also be directly displayed on the peripheral perimeter 12 of the user's field of vision by activating one of the light sources 21.

[0105] Thus, for example, when an external danger is detected (for example via means 24 or camera 26), it is possible to activate a specific source such as the one located by inclusion in screen 13 ( figure 4 ).

[0106] To secure the system, microphones and / or headphones capable of collecting or processing sounds can also be integrated. These sounds can then be processed by algorithms configured to reduce background noise or enhance the spatial perception of a georeferenced point.

[0107] In the example described here, it is also possible to control the intensity and / or color of the light sources 21. For example, it is possible to emit a bright, flashing red light within the field of vision to signal imminent danger.

[0108] Of course, this is just one example among many possible ones.

[0109] The person skilled in the art will understand here that it is possible to foresee, depending on the use case, a plurality of scenarios and to program the control of the light sources 21 according to the specificities of each practice and each need.

[0110] Similarly, other information may be of interest and communicated via the light sources 21 to the user U. Thus, in the example described here, there is a provision for the presence of acquisition means 25 which are capable of retrieving state information I4 from the system 100 such as the state of the power supply battery or the wear level of certain components to warn of a maintenance operation.

[0111] Depending on the information coding and the implementation of the display decision model, the 100 device is capable of displaying several different pieces of information in different selectable modes.

[0112] For example, we can foresee the implementation of a remote control, for example in the form of a connected watch on the wrist of user U (not shown here), which is able, by an action on the touch screen, to select the type of display to switch, for example, the system from a "guidance / geolocation assistance" mode allowing to follow different meeting points on a predetermined route to an "equipment" mode allowing to know the status of an equipment or even a "team" mode allowing to know the relative position of other users U'.

[0113] Other display methods can also be considered to provide the user with reliable and easily usable information.

[0114] Thus, for example, it is possible to program, for an orientation particularly far from the user's cone of vision, the activation of a single light source to indicate the direction in which the user must move to find the area of ​​interest. When zone T enters the user's cone of vision, it is possible to program the activation of four light sources in a cross shape ( figure 5 ) to indicate the direction of the point relative to that of the line of sight with a virtual reticle.

[0115] Similarly, as previously stated, the intensity and / or color of all or some of the light sources can be used to signal other information, such as the passage through the area of ​​interest. Varying the parameters relating to intensity, color, and the number of light sources allows for the overlaying of multiple pieces of information depending on the use case.

[0116] The present invention thus makes it possible to overcome the various drawbacks of the prior art by enabling the provision of implicit information in the user's peripheral vision area.

[0117] The display of this information, which does not occur in the user's main field of vision but at its periphery, is directly usable by the user and requires no thought.

[0118] Thanks to the communication means embedded in the system, this information can also be transmitted to other users.

[0119] The present invention is particularly, but not limited to, applications for extreme sports enthusiasts, firefighters, industrial operators, and defense and security forces personnel during their operations. Applications in tourism and / or digital gaming, as well as applications enabling learning or capacity building through interaction with the peripheral vision area, can also be considered.

[0120] It should be noted that this detailed description relates to a particular embodiment of the present invention, but in no way does this description limit the scope of the invention; on the contrary, its purpose is to remove any possible inaccuracy or misinterpretation of the following claims.

[0121] It should also be noted that the reference signs placed in parentheses in the following claims are in no way intended to be limiting; these signs are solely intended to improve the intelligibility and understanding of the following claims and the scope of the protection sought.

Claims

1. Guidance assistance system (100) for a user (U) directing towards or observing a determined zone of interest (T), said system (100) comprising: - a visualisation window (11) having a peripheral rim (12) defining a peripheral field of vision of said user (U) and being equipped with an optical visualisation screen (13) defining a field of vision of the user (U), and - a display device (20) for guidance information (12) comprising: - a plurality of light sources (21) extending at least partially along said peripheral rim (12) of the visualisation window (11), said light sources (21) being capable of being controlled independently of one another by a control unit (22), - at least one sensor (23) configured to capture spatial information (I1) relating to a position and / or an orientation of the visualisation window (11) in relation to said zone of interest (T); - a processing circuit (24) configured to process said spatial information (I1) according to said zone of interest (T) in order to determine guidance information (I2) of said user (U) towards said zone of interest (T); said system (100) being characterised in that said control unit (22) is configured to selectively control said light sources (21) on the peripheral rim (12) of the visualisation window (11) on the basis of said guidance information (I2) so as to form a virtual reticle in the field of vision of the user (U) indicating a direction to be followed to direct towards or observe said zone of interest (T).

2. System (100) according to claim 1, wherein said optical visualisation screen (13) is provided with straight etchings and / or inclusions formed in the screen (13) to conduct the light emitted by the at least one light source (21) on the screen (13).

3. System (100) according to any one of the preceding claims, wherein said at least one sensor (23) is a position sensor and / or an azimuth sensor and / or an inclination sensor and / or an accelerometer.

4. System (100) according to any one of the preceding claims, wherein said display device (20) comprises wireless communication means (24) configured to communicate with an external entity (100', 300) in order to recover at least one item of external information (I3) relating to the external environment of said user (U).

5. System (100) according to any one of the preceding claims, wherein said display device (20) comprises acquisition means (25) configured to acquire at least one item of status information (I4) of the system (100).

6. System (100) according to any one of the preceding claims, wherein the control unit (22) is configured to control each of the light sources (21) in intensity and / or in colour.

7. System (100) according to any one of the preceding claims, wherein the plurality of light sources (21) comprises an LED or OLED strip.

8. System (100) according to any one of the preceding claims, the plurality of light sources (21) comprises an optical fibre.

9. Facial support (200) intended to be worn directly or indirectly on the head of the user (U) and comprising a system (100) according to any one of the preceding claims, wherein said visualisation window (11) is assembled integrally with said facial support (10).

10. Support (200) according to claim 9, which is in the form of a pair of goggles, a mask or a helmet.

11. Support (200) according to claim 9 or 10, which is provided with at least one strap (14) for holding in position said support (10) on the head of said user (U).