DISPLAY MODULE WORN ON THE HEAD OR HELMET

Description

[0001] The technical field of the invention is that of visualization systems for aircraft pilots. More specifically, the field of the invention is that of systems combining both binoculars and a sight or head-mounted display.

[0002] A vision system can include three different types of vision equipment: a protective visor, a head-mounted sight or visor, and binoculars, which may be night vision binoculars. In the following description, the term "head-mounted sight" will refer to both a helmet-mounted sight and a head-mounted display. The acronym "NVG" will also be used to refer to night vision binoculars.

[0003] Night vision binoculars capture the light from objects in the near-infrared spectrum and produce a visible image using image intensifiers. They consist of two identical bodies. Each body has three main components: a lens, the image intensifier, and an eyepiece. The field of view of NVGs, as seen through the eyepiece, is typically 40 degrees in diameter. To see the entire intensified image, the eyepiece is usually positioned about 25 millimeters from the eye.

[0004] A head-mounted display presents a synthetic image or video collimated at infinity, superimposed on the external environment using a projection lens and an optical combiner or mixer. The image typically originates from a flat screen containing a light source and its electronic control board. The projection lens ensures the collimation of the image displayed in the combiner. To reduce the size of this component, pupil-expanding combiners are used. The combiner is then an optical plate made up of a plurality of prisms that reflect the light from the synthetic image towards the eye.

[0005] Currently, some surveillance missions do not necessarily require the use of a rigid protective helmet, and a simple, lighter headband or visor can be used to relieve the operator's head of the weight of the helmet. For example, in the case of a maritime surveillance mission, which can last several hours, where an operator is aboard an airplane, helicopter, or other aircraft, and spends considerable time observing the sea surface, the crew, including the operator, is equipped only with a rigid headband or visor to avoid wearing a heavy protective helmet.

[0006] To assist the operator in their surveillance duties, an information display device can be attached to the headband or headset to present essential information for conducting a surveillance mission. However, night vision goggles (NVGs) are too heavy and bulky to be mounted on a headband or headset and are generally attached to rigid protective helmets. Furthermore, aircraft and flight condition information is usually displayed on screens in the cockpit or cabin.

[0007] Therefore, when night falls, the operator must replace the headband or visor with a protective helmet to continue nighttime surveillance. However, this requires the operator to lower their head towards the cockpit screens to obtain essential information about their surroundings, the aircraft, etc. This constant switching between monitoring the external environment and observing the cockpit screens, which necessitates the operator lowering their head, impairs their situational awareness by reducing the time they can spend monitoring the external environment. Furthermore, this constant switching significantly fatigues the operator, which also hinders the effectiveness of their surveillance mission.

[0008] Besides nighttime conditions, any variation in brightness may necessitate switching from a display device to binoculars, or vice versa. Similarly, the topography and geography of the environment may require the operator, during surveillance, to switch from a display device to binoculars, or vice versa. Indeed, when the ground environment is a uniform expanse, a display device seems sufficient. However, when terrain features are visible, binoculars appear more appropriate, and replacing the display device and headband with binoculars and the helmet that supports them may become necessary.

[0009] Therefore, the replacement of the headband or rigid headband supporting the display device with the headset supporting the binoculars (night vision goggles or other) and vice versa occurs at least once, and very often several times, during the operator's monitoring. These multiple changes represent a significant amount of time during which the operator cannot perform their monitoring. These multiple changes also generate additional fatigue for the operator during potentially lengthy monitoring periods.

[0010] US patent 2021 / 173212 A1 describes a detachable display device comprising a combiner, a sealed housing, and a removable interface compatible with various cranial mounts. It shows a display superimposed on the external environment, mounted on a cranial mount by means of a variable geometry interface. It does not disclose a binocular attachment interface or an optical configuration where the combiner is interposed between the eye and the binoculars. US patent 2012 / 0120482 A1 shows a helmet-mounted display with removable accessories via a base plate. WO patent 2020 / 160825 A1 discloses a helmet-mounted display and binoculars mounted separately. XP093015956 relates to a detachable display device mounted on a headband by a side rail. XP093016108 shows a helmet-mounted display via a banana bar interface.

[0011] De Furthermore, the combined use of a headband or headset for daytime and a helmet with night vision goggles greatly increases the clutter at the operator's station.

[0012] The invention aims to overcome all or part of the problems mentioned above by offering a removable helmet visual with compatible fixings for mounting on a helmet or headband and a volume compatible with binoculars.

[0013] More specifically, the invention therefore proposes a visualization system comprising removable visualization equipment such as a display device or night vision goggles that can be attached to a rigid protective helmet or to a rigid headband or headband.

[0014] To this end, the invention relates to a visualization system intended to cooperate with a cranial support, said visualization system comprising: a detachable display device, comprising: ∘ a combiner, positioned in front of the user's eye, capable of presenting information superimposed on an external view, the display system comprising a removable mounting interface, configured to associate the display device with a plurality of cranial supports including at least one helmet, headband and headband.

[0015] The detachable display device includes a binocular support attachment interface, the viewing system includes detachable binoculars, the binoculars include a binocular support, suitable for being fixed against the display device by mechanical association of the binocular support attachment interface and the binocular support so that the display device is between the user's eye and the binoculars.

[0016] According to one aspect of the invention, the removable mounting interface comprises: a first fastening system mounted on the removable mounting interface, a second fastening system complementary to the first fastening system, mounted on the cranial support, the first fixing system being configured to be associated with the second fixing system so as to embed the first fixing system.

[0017] According to one aspect of the invention, the first fastening system comprises a sliding system and the second fastening system comprises a T-slot.

[0018] According to one aspect of the invention, the slide system includes a notching device and the T-slot includes a ball pusher system.

[0019] According to one aspect of the invention, the T-slot is movable in rotation about a transverse axis, one component of which is perpendicular to a field of vision of the user.

[0020] According to one aspect of the invention, the second fastening system is mobile in rotation about a second axis parallel to the user's field of vision.

[0021] According to one aspect of the invention, the system is intended to be associated with a helmet, the helmet comprising an adapter plate connected to the second fixing system and to the binocular support fixing interface, the display device and the binoculars being movable in translation relative to the helmet's adapter plate along a vertical axis perpendicular to the transverse axis and the second visual field axis.

[0022] According to one aspect of the invention, the display device includes a first pole of magnets, the viewing system includes a movable visor, the movable visor includes a second pole of magnets complementary to the first pole of magnets, magnetically connected to the first pole of magnets so as to keep the movable visor in contact with the display device.

[0023] According to one aspect of the invention, the removable mounting interface comprises: a first fastening system mounted on the removable mounting interface, a second fastening system complementary to the first fastening system, intended to be mounted on the cranial support, the first fixing system being configured to be associated with the second fixing system so as to embed the first fixing system, the display system being intended to be associated with a helmet, the helmet comprising an adapter plate connected to the second fixing system of the display device, the removable visor comprising a fixing plate connected to the adapter plate of the helmet.

[0024] According to one aspect of the invention, the binoculars are night vision binoculars comprising two identical bodies, each body comprising an eyepiece.

[0025] According to one aspect of the invention, the display device comprises a flat display screen, its light source, collimation optics and an optical pupil expansion combiner.

[0026] The invention will be better understood and other advantages will become apparent upon reading the detailed description of an embodiment given by way of example, a description illustrated by the accompanying drawing in which: [ Fig.1 ] there figure 1 represents a visualization system according to the invention cooperating with a headband; [ Fig.2 ] there figure 2 represents the visualization system according to the invention cooperating with a protective helmet; [ Fig.3 ] there figure 3 represents a display device according to the invention; [ Fig.4 ] there figure 4 represents a dual mounting system for the display device to cooperate with the headband; Fig.5 ] there figure 5 represents the visualization system of the figure 2 cooperating with the headband in a second configuration; [ Fig.6 ] there figure 6 represents a system for managing the height of the display device on a helmet; [ Fig.7 ] there figure 7 represents the dual mounting system of the display device cooperating with the protective helmet; Fig.8 ] there figure 8 represents the visualization system of the figure 1 according to a second configuration; [ Fig.9 ] there figure 9 represents the visualization system comprising a sun visor cooperating with a protective helmet;

[0027] For the sake of clarity, the same elements will carry the same markers in the different figures.

[0028] There figure 1 represents a visualization system 2 according to the invention intended to cooperate with a cranial support 4. The cranial support 4 is defined as a support comprising a rigid frame that rests on the skull of a user. By way of example, the cranial support 4 is a protective helmet, a headband, or a headband. In the following description of the figure 1 The cranial support 4 is a headband. The viewing system 2 includes a display device 6 detachable from the cranial support 4. The display device 6 includes a combiner 60, positioned in front of one eye 8 of the user wearing the cranial support 4 and the viewing system 2. The combiner 60 is capable of presenting information in front of the eye 8 superimposed on external vision.

[0029] The display system 2 also includes a removable mounting interface 10, configured to connect the display device 6 to a plurality of cranial supports 4, including at least one helmet, headband, and headband. Preferably, the cranial support 4, and particularly the headband and headband, is a rigid support; that is, the structure of the cranial support 4 is rigid enough to support at least the display device 6 and other visual equipment. Thus, the cranial support can be any other support resting on the operator's skull and having sufficient rigidity to support visual equipment. Indeed, the display system 2 has the advantage of being able to be connected to a headband or headband as shown in figure 1 and, when night falls, to be detached from the cranial support 4 used, namely the headband, and then to be attached to another cranial support 4, of a different structure than the headband, such as a helmet, represented in figure 2 equipped with NVGs allowing the operator to observe at night. Thus, the visual equipment, namely the display device 6, is detachable and compatible with all cranial mounts carried by the operator so as to allow the operator not to be encumbered with several identical visual equipment on different cranial mounts.

[0030] Therefore, the operator has at his disposal a means of mounting, namely the removable mounting interface 10, allowing the display device 6 to be mounted on a helmet or on a headband and allowing switching from a headband or headband to a helmet in flight.

[0031] The headband 4 optionally includes a strap 3 connecting a front face 40 of the headband 4 to a rear face 42 of the headband 4 so as to improve the positioning of the headband 4 on the operator's skull.

[0032] The headband 4 also includes a weighting means 44 for the headband 4, positioned at the back of the operator's head relative to their field of vision. This means compensates for the weight at the front of the headband 4 caused by the positioning of the display device 6, thus achieving balance on the operator's head. Therefore, the mass of the weighting means 44 is at least equivalent to the mass of the display device 6. As an example, the weighting means 44 has a mass of approximately 200 grams.

[0033] Furthermore, the weighting device 44 also serves as an adjustment mechanism for the headband 4 to adapt it to the shape of the head. The support at the nape of the neck contributes to the stability and support of the entire headband 4 on the head. The headband 4 is weighted to compensate for the mass placed on the front.

[0034] The display device 6 includes a flat display screen, its light source and control electronics 68, collimation optics 62, an imager 64 integrating the light source and the pupil-expanding optical combiner 60.

[0035] The collimation optics 62 and the imager 64 are located in the lower part of the display device 6 and the control electronics 68 are positioned in the upper part of the display device 6.

[0036] The display device includes, according to one variant, a position sensor 69 located in the upper part allowing the correct positioning of the display device 6 to be detected.

[0037] The direct connection between the display unit 6 and the position sensor 69 offers the advantage of real-time and automatic positioning of the display unit 6 to perfectly align with the operator's field of vision. In other words, the display unit 6, which includes the position sensor 69, does not require realignment of the display to the sensor data after in-flight data exchange.

[0038] The detachable display unit 6 also includes a binocular support mounting interface 61, shown in figure 2 (and more specifically in figure 3 ). Indeed, when night falls, the operator must remove the headband in order to change the cranial support 4 to use binoculars 7. Therefore, the cranial support 4 becomes, in the case of the description of the figure 2 a protective helmet 4. The viewing system 2 then includes binoculars 7 such as detachable night vision binoculars or NVGs associated with the helmet 4. The binoculars 7 include a binocular holder 71, suitable for being fixed against the display device 6 by mechanical association of the binocular holder interface 61 and the binocular holder 71 so that the display device 6 is located between one eye 8 of the operator and the binoculars 7. Thus, the display device 6 is fixed against the helmet 4, via the removable mounting interface 10, so that the combiner 60 presents information in front of the operator's eye 8 superimposed on an external view provided via the binoculars 7, fixed against the display device 6.

[0039] Other types of binoculars can be considered instead of night vision goggles (NVGs). Binoculars 7 consist of two identical bodies, each body containing an eyepiece 72. More precisely, when binoculars 7 are used as NVGs, each binocular body comprises, in this order, an objective lens, a light-amplifying device for the image produced by the objective lens, and the eyepiece 72, which forms an image at infinity from the intensified image. Binoculars 7 are mounted with the eyepiece 72 in contact with the combiner 60 to maintain the distance allowing the eye to see the entire field of view of the intensified image. "In contact" means that binoculars 7 are as close as possible to the combiner 60; direct contact is not required. Binoculars 7 are adjusted laterally in front of the eye using their inter-eye adjustment mechanism and are positioned vertically in the center of the usable portion of the combiner 60 by the binocular mount 71.

[0040] To increase the available space between the headset 4 and the binoculars 7, adjustments to the binoculars can be made, such as a longitudinal adjustment of the binoculars 7 to offset them and the binocular support 71 along a second axis A2 parallel to the operator's field of vision. A vertical adjustment of the binoculars can also be made, offsetting them along a vertical axis A1, perpendicular to the second visual field axis A2. Alternatively, an adjustment can be made around a third transverse axis A3, perpendicular to the second visual field axis A2 (or with a component perpendicular to the second visual field axis A2) and perpendicular to the vertical axis A1. The space freed up by these three adjustments defines the available depth for positioning the display device 6 between the operator's eye 8 and the binoculars 7.

[0041] The display device 6 is monocular and preferably positioned in front of the operator's dominant eye. Alternatively, the display device 6 is binocular, as shown in figure 3 , so as to advantageously present a greater amount of information to the operator. The maximum width of the display device 6, and particularly of the combiner 60, along the transverse axis A3, is defined by the installation of a display device 6 on each eye and the need to reserve a space close to the sagittal plane, plane formed by the vertical axis A1 and the second axis A2 of visual field, for the binocular support mounting interface 61.

[0042] The binocular support mounting interface 61 includes a defined number of notches 610, four notches 610 in the example of the figure 3 allowing the insertion of a screw head from the binocular holder 71. A translation towards the combiner 60, parallel to the vertical axis A1, then locks each screw head into its respective notches 610. The binocular holder 71 is then recessed against the binocular holder mounting interface 61 and thus against the display device 6. As an illustrative example, the notches 610 can be rigid slots.

[0043] As an indicative example, the binocular support mounting interface 61 may be a known mounting part for binoculars on a protective helmet.

[0044] To allow for quick and easy attachment of the display device 6 to any cranial support 4, the removable mounting interface 10 comprises, as shown in figure 4 : a first fixing system 100 mounted on the removable mounting interface 10, a second fixing system 40 complementary to the first fixing system 100, mounted on the cranial support 4, namely the helmet or the rigid headband or the rigid headband.

[0045] The first mounting system 100 is configured to be associated with the second mounting system 40 so as to embed the first mounting system 100. The first mounting system 100 and the complementary second mounting system 40 can be any male and female mounting system allowing the display device 6 to be embedded. As an example, the first mounting system 100 can be inserted into the second mounting system 40 and locked into the second mounting system 40 by means of a third part preventing the first mounting system 100 from moving back.

[0046] More specifically, the first fixation system 100 is removable and detachable from the second complementary fixation system 40 which is, in turn, fixed against the cranial support 4.

[0047] According to a preferred configuration, represented in figure 4 , the first fixing system 100 includes a 100' slide system and the second fixing system 40 includes a 40' T-groove, of complementary dimension, allowing the slide system to slide.

[0048] In order to attach the display device 6 to the cranial support 4, a headband is used in the case shown in figure 4 The 100' slide system is inserted parallel to the transverse axis A3 in the T-slot 40'. The 100' slide system also includes a 110' notching device, and the T-slot 40' includes a ball-bearing plunger system 403 for securing the 100' slide system in the T-slot 40'. As shown in figure 4 Two 403 ball-bearing pusher systems are sufficient to lock the 100' slide system. Alternatively, more than two 403 ball-bearing pusher systems can be used. According to another variant, un seul poussoir à bille 403 suffit à verrouiller le système with a sufficiently stiff spring.

[0049] The second fixing system 40 also includes a visual marker 402 so as to center the slide system 100' relative to the operator's eye, the visual marker 402 being able to be aligned with visual indicators 100" present on the first fixing system 100 so as to position laterally the display device 6 relative to the operator's eye.

[0050] Furthermore, the T-slot 40' is rotatable about the transverse axis A3, perpendicular to the operator's field of vision. This rotational mobility has the advantage of allowing the display device 6 to rotate and thus pivot so that the combiner 60 is no longer in front of the eye, at least partially clearing the operator's vision, during flights where the presence of the display device 6 is optional, as shown in figure 5 This rotation also has the advantage of making it easier to put on or take off the combiner 60 on the operator's skull.

[0051] In one variant, the 100' slide system is inserted parallel to the vertical axis A1 into the 40' T-slot, itself positioned parallel to the vertical axis A1. This configuration allows the display device to be locked in place by its own weight. However, this configuration prevents the display device 6 from pivoting, so it remains directly in front of the operator's eye.

[0052] Alternatively, any groove allowing insertion by sliding as well as locking of the slide can be considered.

[0053] Furthermore, when the cranial support 4 is a headband or a headband, as shown in figure 5 , the height adjustment of the combiner 60 in front of the operator's eye is done by moving the cranial support 4 parallel to the vertical axis A1.

[0054] Conversely, when the cranial support 4 is a helmet, as shown in figure 6 The display device 6 can also be adjusted in height in front of the operator's eye. Indeed, the display device 6, as well as the binoculars 7, are movable in translation relative to the helmet along the vertical axis A1, perpendicular to the transverse axis and the second axis of the operator's field of vision. To achieve this, the removable mounting interface 10 includes an additional notching system 120, mounted, for example, on the second mounting system 40, allowing the height of the first mounting system 100 to be varied.

[0055] It is also possible for the helmet to include an adapter plate, either attached to or integrated into the helmet, connected to the second mounting system 40 and the binocular mounting bracket 61. In this case, the display device 6 and the binoculars 7 are also free to move translationally relative to the helmet's adapter plate along the vertical axis A1. Alternatively, the helmet 4 may include a headband 46 resting against the helmet. In this case, the adapter plate rests against the headband 46. The headband 46 is preferably made of the same material as the helmet shell 4. The adapter plate may be an integral part of the headband 46 or permanently attached to it.

[0056] Thus, the invention relates to the visualization system 2 and the cranial support 4, namely the helmet in the case of the figure 6 , including the adapter plate and / or the hoop 46 in which the binoculars 7, and more particularly the binocular support fixing interface 61, have translational mobility relative to the adapter plate and relative to the hoop 46 and the helmet 4 along the vertical axis A1.

[0057] The adapter plate is, by way of example, a type of adapter plate commonly used in the field of protective helmets for aviation. Similarly, the headband 46 is also a metal headband commonly used in flight helmets. The adapter plate and the headband 46 can be formed from a single piece, as shown in figure 6 The hoop can be, for example, a "Banana Bar" or "Banana Ski" hoop. This hoop has a surface adapted for the "permanent" attachment of the binocular mount 71 or for the binocular mount attachment interface 61 for quick mounting of the binocular mount 71.

[0058] Furthermore, the clearance of the display device 6, and particularly of the combiner 60, for example for the placement of the headset 4, cannot be achieved forwards, in the direction of the second axis A2 of the field of vision, due to the presence of binoculars 7 and their proximity to the headset 4. Thus, as shown in figure 7 The second fixation system 40 is rotationally mobile along the operator's second visual field axis A2. More precisely, the T-slot 40' is capable of pivoting about a pivot 400 parallel to the second visual field axis A2, carrying the first fixation system 100 with it. The clearance is then achieved by a lateral rotation opposite to the sagittal plane, around the pivot 400, so as to move the combiner 60 away from the operator's eye and the binoculars 7.

[0059] As previously stated, with the combiner 60 installed on the operator's dominant eye side, the pivot 400 is also installed on the dominant eye side. Alternatively, if using two combiners 60, two pivots 400 can be used, one pivot 400 per T-slot 40'. The pivot 400 is positioned between the headset 4 and the T-slot 40'. If the headset 4 includes a headband 46 or an adapter plate as in the figure 7 , the 400 pivot is positioned between the adapter plate and the 40' T-slot.

[0060] There figure 8 This presents the visualization system 2 in which the removable mounting interface 10 includes the first fixing system 100 mounted on the removable mounting interface 10 and the second fixing system 40 complementary to the first fixing system 100, itself embedded in the second fixing system 40, mounted this time on the hoop 46.

[0061] When the display system 2 is intended to be associated with a helmet 4 and the helmet 4 includes the headband 46 and / or the adapter plate, the adapter plate, or the headband 46 when the helmet 4 does not include an adapter plate, is connected to the second fixing system 100 of the display device 6.

[0062] Furthermore, when binoculars 7 are not needed but helmet 4 is required or simply desired by the operator, it may be possible to remove binoculars 7 from helmet 4, as shown in figure 9 and simply attach the display device 6 to the helmet 4. However, during the day, for example, it may be necessary to protect the operator's eye 8 from external brightness or any other visual nuisance, such as dust and particles. Thus, it may be possible to use, according to a variant shown in figure 9 , a movable visor 9 to protect the operator's eye.

[0063] Therefore, the visualization system 2 includes the movable visor 9, which can be, as an indicative example, a solar visor.

[0064] When the cranial support 4 is a helmet, as shown in figure 9 , and in order to associate the movable visor 9 against the display device 6, the movable visor 9 includes a plate 92 allowing a fixing against the binocular support fixing interface 61 in a manner similar to the fixing of the binoculars 7 so as to ensure mechanical retention of the movable visor 9 against the display device 6.

[0065] The movable visor 9 may also include a visor pivot 94 allowing the movable visor 9 to be rotated parallel to the transverse axis A3, thus removing the movable visor 9 from the operator's field of vision. This rotation also has the advantage of allowing the display device 6 to be rotated about the second axis A2.

[0066] Furthermore, when the cranial support 4 is a headband or headband, the plate 92 is not suitable for attaching the movable visor 9 to the headband 4. Therefore, the display device 6 includes a first pole of magnets 600, and the movable visor 9 includes a second pole of magnets 900 that complements the first pole of magnets 600. The first pole of magnets 600 and the second pole of magnets 900 are magnetically connected so as to keep the movable visor 9 in contact with the display device 6. The first pole of magnets 600 and the second pole of magnets 900 are sufficient for attaching the movable visor 9 to a headband or headband.

[0067] When the cranial support 4 is a helmet, the distance between the first pole of magnets 600 and the second pole of magnets 900 increases, which impairs the magnetic retention of the movable visor 9 and necessitates attachment via the plate 92.

[0068] The movable visor comprising, on the one hand, the second pole of magnet 900 and on the other hand, the plate 92, thus has the advantage of being adapted to be fixed to any cranial support 4 mentioned previously.

[0069] The invention is also suitable for operators such as emergency medical services (SAMU) or offshore operators who require a visual sight for routine missions and who sometimes need night-vision goggles. Since the device can be mounted on a headband or helmet, it allows for the acquisition of a single system. The visual system is then said to be attached to the aircraft or helicopter, while the headband and helmet belong to the pilot. The pilot chooses their "head support" before the flight, depending on the mission.

[0070] This second advantage of the invention particularly justifies the common visor presented in figure 9The pilot has a visor and a viewing device that he can use with a headband or helmet with or without night vision goggles.

[0071] Thus, the invention presents a detachable display device 6 that allows the display device 6, binoculars 7, or a movable visor 9 to be combined with a variety of head supports such as a protective helmet, a headband, or a rigid headband. The entire display system therefore offers the advantage of being interchangeable and adaptable to any in-flight surveillance situation, and reduces operator fatigue associated with the use of different systems, sometimes involving bulky equipment.

Claims

1. Viewing system (2) intended to engage with a cranial support (4), said viewing system (2) comprising: - a detachable display device (6), comprising: - a combiner (60), disposed in front of an eye (8) of the user, capable of having information superposed with an external vision, the viewing system (2) comprising a removable mounting interface (10), characterised in that: said removable mounting interface (10) is configured to associate the display device (6) alternatively with a plurality of cranial supports (4) from among at least one helmet, one band, and one headband, the detachable display device (6) comprising a binocular support fixing interface (61), the viewing system (2) comprising detachable binoculars (7), the binoculars (7) comprising a binocular support (71), capable of being fixed against the display device (6) by mechanical association of the binocular support fixing interface (61) and of the binocular support (71), such that the display device (6) is located between the eye (8) of the user and the binoculars (7).

2. Viewing system (2) according to claim 1, wherein the removable mounting interface (10) comprises: - a first fixing system (100) mounted on the removable mounting interface (10), - a second fixing system (40) complementary to the first fixing system (100), mounted on the cranial support (4), the first fixing system (100) being configured to be associated with the second fixing system (40), so as to embed the first fixing system (100).

3. Viewing system (2) according to claim 2, wherein the first fixing system (100) comprises a slide system (100') and the second fixing system (40) comprises a T-shaped groove (40').

4. Viewing system (2) according to claim 3, wherein the slide system (100') comprises a notching device (110'), and wherein the T-shaped groove (40') comprises a ball pushbutton system.

5. Viewing system (2) according to claims 3 or 4, wherein the T-shaped groove (40') is rotatably movable along a transverse axis (A3), a component of which is perpendicular to a viewing field of the user.

6. Viewing system (2) according to any one of claims 2 to 4, wherein the second fixing system (40) is rotatably movable along a second axis (A2) parallel to the viewing field of the user.

7. Viewing system (2) according to any one of claims 1 to 6, intended to be associated with a helmet, the helmet comprising an adaptation plate connected to the second fixing system (40) and to the binocular support fixing interface (61), the display device (6) and the binoculars (7) being translatably movable with respect to the adaptation plate of the helmet along a vertical axis (A1) perpendicular to the transverse axis (A3) and to the second viewing field axis (A2).

8. Viewing system (2) according to claim 1, the display device (6) comprising a first magnet pole (600), the viewing system (2) comprising a movable visor (9), the movable visor (9) comprising a second magnet pole (900) complementary to the first magnet pole (600), magnetically connected to the first magnet pole (600), so as to keep the movable visor (9) in contact with the display device (6).

9. Viewing system (2) according to claim 8, wherein the removable mounting interface (10) comprises: - a first fixing system (100) mounted on the removable mounting interface (10), - a second fixing system (40) complementary to the first fixing system (100), intended to be mounted on the cranial support (4), the first fixing system (100) being configured to be associated with the second fixing system (40), so as to embed the first fixing system (100), the viewing system (2) being intended to be associated with a helmet, the helmet comprising an adaptation plate connected to the second fixing system (100) of the display device (6), the movable visor (9) comprising a fixing plate (92) connected to the adaptation plate of the helmet.

10. Viewing system (2) according to any one of claims 1 to 7, wherein the binoculars (7) are night vision binoculars comprising two identical bodies, each body comprising an eye (72).

11. Viewing system (2) according to any one of the preceding claims, wherein the display device (6) comprises a flat display screen, its lighting source, collimating optics (62) and a pupil-expanding optical combiner (60).