Device for misting perfumed liquid compositions, and associated immersive virtual reality system.

Abstract

The invention relates to a new design of a device for misting perfumed liquid compositions, particularly for a virtual or augmented reality headset, which may comprise a plurality of capsules. [Fig.1]

Description

Title of the invention: Device for misting perfumed liquid compositions, and associated immersive virtual reality system. Technical field of the invention

[0001] The field of the invention is that of virtual reality headsets and associated devices.

[0002] More specifically, the invention relates to a new design of a device for misting perfumed liquid compositions for virtual or augmented reality headsets. Technical background

[0003] Virtual reality headsets have seen significant progress in recent years, offering users visual and auditory immersion in virtual environments.

[0004] Virtual reality headsets allow users to be immersed in three-dimensional environments, thus creating interactive and immersive virtual experiences. The headsets allow users to view various environments and are used for a variety of applications, including video games, professional training, medical simulation, virtual tourism, and many others. They offer a sophisticated sensory experience by combining audio and video content, and sometimes even tactile sensations, to create an illusion of presence in a virtual world.

[0005] However, the user experience remains limited to these three senses, which exclude the sense of smell.

[0006] However, it is essential to introduce perfumes into the user experience if we wish to bring a sensory experience lived with a virtual reality headset closer to real conditions. A closer connection to real conditions is sought in particular for educational purposes, for example to accustom the user to future conditions which he might face in reality (such as a firefighter having to train to be confronted with smoke odors), but also to improve the overall feeling and immersion of the user in the virtual world generated by the virtual reality headset.

[0007] Various devices have been developed to try to introduce the sense of smell into a virtual experience.

[0008] For example, those skilled in the art are aware of wearable fragrance diffusion devices, such as scented necklaces, that allow users to carry fragrances during their virtual experiences. This type of device allows The user visualizes an environment (generated by the virtual reality headset), while scented necklaces release odors in response to external stimuli. However, these devices are not suitable for providing an olfactory experience synchronized with the virtual content. Furthermore, such devices are generally bulky.

[0009] Perfume diffusion devices that can be used with a virtual or augmented reality headset are also known. For example, patent application EP 3723881 describes a system providing olfactory stimuli, this system comprising a device with piezoelectric elements used to release perfumes contained in scented media and diffused in response to actions performed in a virtual reality environment. However, it turns out that the diffusion of the perfumed compositions (or perfumes) is not sufficiently controlled. Indeed, the diffused perfumes are often released in excessive quantities, which can quickly become overpowering for the user.

[0010] Moreover, this device proves to be bulky and difficult to maintain.

[0011] There is therefore an unmet need to provide a device for virtual and / or augmented reality headsets that allows the diffusion of a plurality of perfumed compositions with improved quality, while being simple to implement. Summary of the invention

[0012] To this end, the Applicant has developed an improved misting device comprising a diffusion module capable of containing and diffusing, in a controlled manner, a plurality of perfumed liquid compositions in response to instructions issued by a virtual reality headset during an experiment.

[0013] More particularly, the present invention relates to a device for misting a perfumed liquid composition comprising one or more natural or synthetic perfumed materials for a virtual reality headset, the device comprising:

[0014] - a power supply;

[0015] - a wifi or Bluetooth data receiving module;

[0016] - a processor intended to generate control instructions from the data Wi-Fi or Bluetooth;

[0017] - a communication module for data representative of the instruction of order; and

[0018] - a broadcast module connected to the communication module and comprising:

[0019] o a diffuser connector;

[0020] o an interface connected to the connector and comprising at least one compartment, the interface being configured to emit electrical signals;

[0021] or at least one capsule inserted into the compartment, the capsule being configured to contain the perfumed liquid composition,

[0022] o a piezoelectric element fixed on the capsule and coupled in a controlled manner to the interface, the piezoelectric element being able to be deformed in response to electrical signals emitted by the interface so as to deliver the perfumed liquid composition;

[0023] o a data processing unit representing the control instruction configured to receive and process the electrical signals emitted to deform the piezoelectric element and deliver the perfumed liquid composition; and

[0024] - an inductance connected to the piezoelectric element and enabling the processing of the deformation frequency of the piezoelectric element,

[0025] said device being characterized in that, the capsule further comprises a liquid composition diffusion wick which soaks at least partially in the perfumed liquid composition so as to absorb and then allow the capillary diffusion of the perfumed liquid composition onto the piezoelectric element.

[0026] By virtual reality headset is meant a virtual reality and / or augmented reality headset.

[0027] During operation, when the device is activated, the perfumed liquid composition is gradually absorbed by the wick and transported by capillary action. Then, when the piezoelectric element is deformed (in the form of undulations due to high-frequency vibrations), a drop of the perfumed liquid composition comes into contact with the piezoelectric element, creating a "bridge" between the wick and the piezoelectric element. The drop of liquid composition then passes through the piezoelectric element, transforming into microdroplets. This configuration allows for the diffusion of just the right amount of perfumed composition outside the device, i.e., in the form of a mist composed of microdroplets whose scent is sufficiently perceptible to the user during the use of the virtual reality headset.

[0028] Preferably, the piezoelectric element comprises a microporous piezoelectric film capable of misting the perfumed liquid composition outwards from the capsule.

[0029] Advantageously, the processor, the wifi or Bluetooth data receiving module and the power supply can be positioned in the same control box.

[0030] Advantageously, the capsule can be rechargeable and / or removable.

[0031] Preferably, the wick is made of rattan or cotton, preferably filtered cotton.

[0032] Advantageously, the device may further include at least one attachment element to the virtual reality headset, the attachment element being a magnet, a fixing clip, an adhesive film, or glue.

[0033] Preferably, the number of compartments is between 3 and 5.

[0034] Advantageously, the perfumed liquid composition may comprise one or several solvents and one or more essential oils, and preferably

[0035] - 70% to 99% by weight of solvent, the solvent preferably being an alcohol, and

[0036] - 1% to 10% of one or more essential oils,

[0037] the percentages being indicated in relation to the total weight of the perfumed liquid composition.

[0038] Alternatively, the perfumed liquid composition may comprise one or more solvents and a juice of synthetic molecules, and preferably

[0039] - 70% to 99% by weight of solvent, the solvent preferably being an alcohol, and

[0040] - 1% to 30% of synthetic molecule juice,

[0041] the percentages being indicated in relation to the total weight of the perfumed liquid composition.

[0042] In this description, the term "synthetic molecule juice" refers to a fragrance created from synthetic chemical compounds rather than natural extracts. These compounds are designed to reproduce specific odors and generally offer greater stability than natural raw materials.

[0043] The present invention also relates to an immersive virtual reality system comprising:

[0044] - a virtual reality headset intended to be fitted to the head of a user, and

[0045] - a device for misting a perfumed liquid composition as described In this description, the misting device is placed on the helmet so as to be able to mist the perfumed liquid composition near the user's nose.

[0046] Preferably, the virtual reality headset may include an inner face intended to be positioned in front of the user's eyes, and an outer face opposite the inner face, and the diffusion module may be placed on the outer face, so that, when the piezoelectric element is deformed, the perfumed liquid composition is diffused at the user's nose.

[0047] Such positioning allows the weight of the device to be distributed evenly on the virtual reality headset, which offers greater comfort to the user, especially when worn for long periods, and also helps to reduce fatigue and potential pain caused by wearing the virtual reality headset.

[0048] This configuration offers the possibility of changing only part of the device when the piezoelectric elements are no longer functional; the latter present Indeed, it has a limited lifespan estimated at approximately 3000 hours of use. Therefore, when the piezoelectric elements need replacing, it is possible to change the diffusion module alone, without having to replace the other parts of the misting system. Brief description of the figures

[0049] Other features and advantages of the invention will become more apparent upon reading the following description of preferred embodiments, given by way of illustrative and non-limiting examples, and the accompanying figures, among which:

[0050] [Fig-1] - [Fig.1] illustrates an example of an immersive virtual reality system according to the invention installed on the head of a user, said immersive system comprising a virtual reality headset and a device for misting a perfumed liquid composition;

[0051] [Fig.2] - [Fig.2] is a schematic representation of the misting device of perfumed liquid composition according to the invention illustrated in [Fig.1];

[0052] [Fig.3] - [Fig.3] is a schematic perspective representation of the hull of the control box of the misting device of the [Fig.2];

[0053] [Fig.4] - [Fig.4] is a view of a lower side face of the control box of the misting system of [Fig.2];

[0054] [Fig.5] - [Fig.5] is a view of the upper side face of the control box of the misting system of [Fig.2];

[0055] [Fig.6] - [Fig.6] is a cross-sectional view perpendicular to axis A of the control box of the [Fig.4], showing the electronic components of the processor;

[0056] [Fig.7] - [Fig.7] is another cross-sectional view perpendicular to axis B of the control box of the [Fig.4], showing the battery and the inductors of the control box;

[0057] [Fig.8] - [Fig.8] illustrates the interface and the broadcast connector of the device misting of the [Fig.2], assembled in such a way as to limit the bulk of the wiring of the piezoelectric elements (not shown) contained in the misting device;

[0058] [Fig.9] - [Fig.9] illustrates the wiring connecting the inductors of [Fig.7] to their respective piezoelectric elements, only the compartments of the piezoelectric elements being represented; [Fig.10] - the [Fig. 10] is a photograph showing a capsule intended to be inserted into one of the compartments of the interface of the [Fig.8];

[0059] [Fig. 11] - [Fig. 11] is a photograph of the disassembled capsule of [Fig. 10];

[0060] [Fig. 12] - the [Fig. 12] is a top view representation of a piezoelectric element in the form of a piezoelectric mesh disk with a central steel plate;

[0061] [Fig.13] - the [Fig.13] is a side view representation of the piezoelectric element of the [Fig. 12];

[0062] [Fig. 14] - the [Fig. 14] is a photograph of the piezoelectric element of the [Fig.12];

[0063] [Fig. 14] - the [Fig. 14] is a schematic side view representation of a "bridge" of perfumed liquid composition formed between the wick and the piezoelectric element of a diffusion module;

[0064] [Fig. 16] - the [Fig. 16] is a representation seen from below of an example of an embodiment of a diffusion module capable of housing five different capsules;

[0065] [Fig. 17] - the [Fig. 17] is a top view representation of the diffusion module of the [Fig. 16];

[0066] [Fig. 18] - [Fig. 18] is another top view representation of the broadcast module of [Fig. 16], showing the connector intended to be connected to the control box by a communication module;

[0067] [Fig. 19], [Fig. 20], [Fig. 21], [Fig. 22], [Fig. 23] - Figures 19 to 23 are schematic representations of an example embodiment of a diffusion module capable of housing up to five capsules of perfumed liquid compositions,

[0068] [Fig.24] - [Fig.24] is a schematic representation of an example embodiment of a diffusion module capable of housing up to three capsules of perfumed liquid compositions; and

[0069] [Fig.25] - [Fig.25] is a photograph of a misting device worn by a user and having a diffusion module as shown in [Fig.24], showing angle a. Detailed description of the invention

[0070] Figure 1 shows an immersive virtual reality system according to the present invention. The immersive system comprises a virtual reality headset 2, as known in the prior art, and a misting device 1 for one or more scented liquid compositions. The misting device 1 is advantageously designed so that it can be installed on various existing virtual reality headsets. In other words, the misting device 1 is not specific to any particular headset.

[0071] More specifically, [Fig. 2] represents a misting device 1 for one or more perfumed liquid compositions conforming to this description. The device comprises a diffusion module 12 connected to a control box 11 containing one or more capsules associated with piezoelectric elements 300. The contents of the diffusion module 12 are visible through transparency.

[0072] The control unit 11 is powered by a battery 110 and further comprises a processor 111, a receiver module which may be a Wi-Fi or Bluetooth antenna 113, a communication module, which may be a cable 13, and inductors 114. All the components of the control unit 11 described above can be contained within a housing 1100 as shown in [Fig. 3]. The housing 1100 may have an opening for the installation of a button, for example a touch button (not shown), to activate the processor 111. The housing 1100 preferably has a shape similar to that of the processor 111 in order to minimize the size of the control unit 11.

[0073] Figures 4 to 7 show more precisely the contents of the control box 11.

[0074] The processor 111 is associated with an antenna 112 which receives data transmitted from outside the device, notably by the virtual reality headset. The processor 111 also includes the electronic components usually used for the proper functioning of an electronic board, namely: a microprocessor, a capacitor, protection diodes and / or fuses, a 2.4G antenna, a USB-C connector, an ESP32, inductors, regulators, an RGB LED, a transistor, a logic board, and an analog stick.

[0075] The processor 111 is configured to, from the data received and following software instructions for processing liquid compositions, generate control instructions which will be used to control the diffuser card 12 described in more detail below.

[0076] In this embodiment, the control unit 11 is connected to the display board 12 via a USB-C cable. The USB-C port of the control unit 11 also serves to power the battery 110 of the control unit 11 when the latter is not in use. The control unit 11 may further include a load-sharing element 116, which is a device for sharing power between the battery load and the processor. During operation, the processor is not connected to the USB and operates independently on its battery, and the load-sharing element 116 connects the battery to the processor's regulators. When the processor is under load, the load-sharing element 116 shares power between the load and the microcontroller's regulator.

[0077] By way of example, battery 110 is an integrated lithium polymer battery.

[0078] The battery 110 allows the device to be used independently on the headset 2. The battery 110 is centered in the control unit 11, and is surrounded by inductors 115 programmed to regulate the frequency of piezoelectric elements. This Positioning allows us to further limit the bulk due to the elements of the control box 11, and thus reduce the size of the latter.

[0079] Each inductor 115 serves to control the resonant frequency of one of the piezoelectric elements of the misting device 1 and to stabilize its operation. To this end, each inductor 115 is connected to a single piezoelectric element.

[0080] Preferably, the inductors regulate the piezoelectric elements over a frequency range between 100 and 120 kHz.

[0081] The diffusion module 12 of the misting device 1 includes a connector 121, an interface 122, one or more capsules 3, and a processing unit.

[0082] Connector 121 allows all the piezoelectric elements to be soldered onto interface 122 and optimizes their integration. Connector 121 contains the wiring of the piezoelectric elements to their respective inductances 115, which allows for further miniaturization of the diffusion module 12. The wiring of the example embodiment is shown in [Fig. 9].

[0083] The interface 122 comprises several compartments in the form of openings. Preferably, the openings have a surface area complementary to the external surface of the capsules 3 and / or the piezoelectric elements they are intended to house. Each compartment can house one or more capsules 3 and the associated piezoelectric elements 300.

[0084] Preferably, the openings are aligned with the plane (not shown) encompassing the piezoelectric elements of the same device, and the openings have a diameter allowing the insertion of the piezoelectric elements with their silicone surrounds. In other words, the interface 122 is included in the same plane as the piezoelectric elements of the diffusion module 12.

[0085] By way of example, two lateral compartments have a shape suitable for housing two piezoelectric elements and a central compartment is intended to house a single piezoelectric element, as shown in Figures 2 and 8. The example embodiment of the interface 122 shown offers the advantage of reducing the size of the capsules and the possibility of integrating a larger number of capsules.

[0086] The interface 22 can be included in a base, for example made of plastic material, as shown in [Fig.2].

[0087] Figures 11 and 12 show an example of a capsule used in the diffusion device. The capsule 3 comprises a bottle 31 of perfumed liquid composition at one end, and a contact portion 32 at the opposite end. The contact portion 32 can, for example, be screwed onto the bottle 31.

[0088] Each capsule comprises a bottle 31 containing a given perfumed liquid composition. It is therefore possible to provide, for the same misting device 1, a plurality of perfumed liquid compositions.

[0089] The capsule 3 further includes a longitudinal diffusion wick 30 which passes through both the bottle 31 and the contact portion 32.

[0090] Preferably, the diffusion wick 30 extends along a longitudinal axis L passing through the centers of the sides of the bottle 31 and the contact portion 32, as shown in [Fig. 10]. When the bottle 31 and the contact portion 32 are assembled, the perfumed liquid composition contained in the bottle 31 can only be moved into the contact portion 32 via the diffusion wick 30.

[0091] Indeed, the perfumed liquid composition circulates from the bottle 31 to the contact portion 32 by capillarity through the diffusion wick 30, thus limiting the amount of liquid coming into contact with the piezoelectric element associated with the capsule.

[0092] Each contact portion 32 of capsule 3 is associated with a piezoelectric element 300 as shown in Figures 12 and 13.

[0093] The piezoelectric element used in the exemplary embodiment is in the form of a piezoelectric mesh disc made of a perforated stainless steel plate 301 with hundreds, or even thousands, of laser-drilled holes, and surrounded by a piezoelectric material 302. The steel plate 301 positioned at the center of the disc is made up of holes to extrude the perfumed liquid composition with microscopic droplets.

[0094] More specifically, the piezoelectric element 300 has an upper contact face 3001 facing the capsule 3 when the latter is positioned in its compartment 120, and an opposing lower misting face 3002 from which the microdroplets of perfumed liquid composition emerge.

[0095] The piezoelectric element further comprises a circular silicone seal 303 which encircles the piezoelectric material.

[0096] An example of a conventional piezoelectric element that can be used in the diffusion module 12 is the piezoelectric element marketed under the trade name "PZT ELECTRONIC CERAMIC CO" by the company PZT, and in particular the 20 mm diameter piezoelectric element with trade reference PZT-20-1.7BU.

[0097] The electrical signals emitted by the interface 122, which represent the control instruction data, are processed by a processing unit of the diffusion module 12. The processing unit controls the deformation, or in other words, the undulations, of the piezoelectric element in response to the electrical signals emitted by the interface 122.

[0098] The piezoelectric material vibrates at very high speeds when driven by a frequency signal. As a result, the piezoelectric element is deformed and its upper contact face 3001 approaches the diffusion wick 30 soaked in perfumed liquid composition, creating a “bridge” of perfumed liquid composition G between the diffusion wick 30 and the upper contact face 3001, as shown in [Fig. 15], allowing only one drop to diffuse onto the piezoelectric element 300.

[0099] Following rapid vibrations, the drop of perfumed liquid composition is drawn through the holes in the plate 301 to form droplets or microdroplets of constant size. The microdroplets thus exit the diffusion module 12 through the lower misting face 3002 of the piezoelectric element 300.

[0100] In other words, placing the upper contact face 3001 below the wick 30, without the piezoelectric element 300 being in contact with the wick 30, allows the perfumed liquid composition absorbed by the wick 30 by capillary action to be sprayed. Thus, the capsule 3 is coupled to the piezoelectric element 300 as soon as it is introduced into the corresponding compartment of the interface 122, the weight of the capsule and the capillary effect being sufficient to ensure coupling of the capsule to the piezoelectric element 300.

[0101] In operation, when the capsule is correctly positioned in its compartment, the continuous vibration of the piezoelectric element 300 sprays the perfumed liquid composition out of the capsule 3 and the diffusion module 12 in the form of a mist. Then, the wick 30 absorbs more perfumed liquid composition to complete the misting cycle.

[0102] The distance between the piezoelectric element and the wick 30 can be between 1 and 3 millimeters (mm) so as to allow the formation of the "bridge" by the drop of perfumed liquid composition diffusing from the wick 30 towards the piezoelectric element 300.

[0103] The piezoelectric element preferably has a diameter of 20 mm, which allows for better atomization of the perfumed liquid composition in combination with the diffusion wick 30.

[0104] Figures 16 to 23 show an example of an embodiment of a diffusion module 12 that can accommodate five different capsules 3. For the sake of simplicity, the drop or bridge of perfumed liquid composition G is not shown. As a reminder, the wick 30 is not in direct contact with the piezoelectric element 300, but they tend to move closer together until they create a "bridge" of perfumed liquid composition between them, allowing the perfumed liquid composition to pass through the holes in the plate 301 of the piezoelectric element.

[0105] The diffusion module 12 is in the form of a housing having an upper portion 123 and a lower portion 124 opposed to each other and intended to be assembled by means of fastening, for example by means of screws.

[0106] The upper portion 123 can be separated from the lower portion 124 so as to insert or remove the capsule from the diffusion module.

[0107] The upper portion 123 has an opening 1230 allowing the introduction of the communication module 113 to the connector 121, while the lower portion 124 has openings 1240 aligned along the axis L with the piezoelectric elements 300. This positioning, particularly visible on the cross-sectional views of figures 20 to 23, allows the exit of microdroplets of the perfumed liquid composition when the piezoelectric elements 300 are deformed.

[0108] The lower portion 124 also includes recesses for inserting capsules 3, which may have dimensions and shapes complementary to the capsules. The recesses in the lower portion 124 may have a different diameter, and in particular a larger diameter, than the openings in the interface 122.

[0109] Figure 24 shows another example of an embodiment of a diffusion module that can accommodate up to three capsules. This diffusion module 12 has upper and lower portions 123, 124 similar to the diffusion module 12 of Figures 16 to 23 and differs only in the number of capsules 3 that can be housed and piezoelectric elements 300.

[0110] The immersive virtual reality S system of the present invention includes a headset intended to be installed on the head of a user and one of the misting devices as described above.

[0111] The headset 2 is held on the user's head, for example by means of a strap, and has an inner face 21 intended to be positioned on the user's face, and more specifically, in front of their eyes. The headset 2 also has an outer face 22 opposite its inner face 21. The inner face 21 and outer face 22 are adjacent to an inner face 24 intended to be near the user's nose when the user is wearing the immersive virtual reality system, and to an opposing upper face 23.

[0112] The headset 2 may be any type of virtual or augmented reality headset known in the prior art such as headsets marketed under the trade names "Oculus Quest", "HTC vive", "Pico" or "HP Reverb G2".

[0113] The diffusion module 12 is preferably positioned on the outer face 22 of the helmet 2, while the control box 11 is preferably positioned on the upper face 23 of the helmet 2.

[0114] Alternatively, the control box 11 can be positioned on the helmet strap 2, for example at the back of the user's head, as shown in [Fig.25].

[0115] Thus, the weight of the misting device 1 is evenly distributed on the helmet, and limits the pressure exerted on the head, which helps to avoid the discomforts associated with prolonged wearing of the immersive system S, in particular muscle tension and neck pain.

[0116] The misting device 1 is in particular positioned on the lower end 221 of the outer face 22 so that the lower misting faces 3002 of the piezoelectric elements 300 are positioned near the user's nose when the user is wearing the immersion system S. The lower end 221 of the outer face 22 is considered to be the end facing the ground when the immersion system S is worn by the user.

[0117] The piezoelectric elements 300 and the capsules 3 are preferentially oriented along the axis L forming an angle a of 5° to 10° with the axis L' including the lower face 24 of the helmet 2, as shown in [Fig.25], so that the mist of microdroplets of perfumed liquid composition is directed towards the user's nose when it exits the misting device 1.

Claims

1. Demands A misting device (1) for a perfumed liquid composition comprising one or more natural or synthetic perfumed substances for a virtual reality headset (2), said device (1) comprising: - a power supply (110); - a wifi or Bluetooth data receiving module (112); - a processor (111) designed to generate control instructions from wifi or Bluetooth data, - a communication module (113) for data representing the command instruction; and - a broadcast module (12) connected to said communication module (113) and comprising: o a connector (121); o an interface (122) connected to the connector and comprising at least one compartment (120), said interface (122) being configured to emit electrical signals; at least one capsule (3) inserted into said compartment, said capsule containing said perfumed liquid composition, o a piezoelectric element (300) fixed on said capsule (3) and coupled in a controlled manner to said interface (122), said piezoelectric element being capable of being deformed in response to electrical signals emitted by said interface so as to deliver said perfumed liquid composition; o a data processing unit representing the control instruction configured to receive and process said electrical signals emitted to deform the piezoelectric element (30) and deliver said perfumed liquid composition; and - an inductor connected to said piezoelectric element and enabling the processing of the deformation frequency of said piezoelectric element, said device being characterized in that said capsule (3) further comprises a diffusion wick (30) of liquid composition which soaks at least partially in said perfumed liquid composition so as to absorb and then allow the diffusion by capillarity of said perfumed liquid composition onto the piezoelectric element.

2. Device according to claim 1, wherein said piezoelectric element comprises a microporous piezoelectric film (301) capable of misting said perfumed liquid composition outwards from said capsule (3).

3. Device according to any one of claims 1 and 2, wherein said processor (111), said wifi data receiving module (112) and said power supply (110) are positioned in the same control box (11).

4. Device according to any one of claims 1 to 3, wherein the capsule (3) is rechargeable and / or removable.

5. Device according to any one of claims 1 to 4, wherein the wick is made of rattan or cotton, preferably filtered cotton.

6. Device according to any one of claims 1 to 5, further comprising at least one attachment element for said virtual reality headset (2), said attachment element being a magnet, a fixing clip, an adhesive film, or glue.

7. Device according to any one of claims 1 to 6, wherein the number of compartments (120) is between 3 and 5.

8. Device according to any one of claims 1 to 7 in which said perfumed liquid composition comprises one or more solvents and one or more essential oils, and preferably - 90% to 99% by weight of solvent, said solvent preferably being an alcohol, and - 1% to 10% of one or more essential oils, the percentages being stated in relation to the total weight of said perfumed liquid composition.

9. Device according to any one of claims 1 to 7, wherein said perfumed liquid composition comprises one or more solvents and a juice of synthetic molecules, and preferably - 70% to 99% by weight of solvent, said solvent being preferably an alcohol, and - 1% to 30% of juice of synthetic molecules, the percentages being indicated in relation to the total weight of said perfumed liquid composition.

10. Immersive virtual reality system(s) comprising: - a virtual reality headset (2) intended to be fitted to the head of a user, and - a misting device (1) of a perfumed liquid composition according to any one of claims 1 to 9, said misting device (1) being placed on said helmet so as to be able to mist said perfumed liquid composition near the user's nose.

11. Immersive virtual reality system (S) according to claim 10, wherein: - said virtual reality headset (2) comprises an inner face (21) intended to be positioned in front of the user's eyes, and an outer face (22) opposite said inner face (21), and - said diffusion module (12) is placed on said outer face (22), so that, when said piezoelectric element (30) is deformed, the perfumed liquid composition is diffused at the level of the user's nose.

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