WO2024042280A1

WO2024042280A1 - Pair of adaptive spectacles and method for controlling such a pair of adaptive spectacles

Info

Publication number: WO2024042280A1
Application number: PCT/FR2023/051103
Authority: WO
Inventors: Bruno Berge; Jessica JAROSZ; Devaraj SAVITRI DHAKHSHINAMURTHY
Original assignee: Laclaree
Priority date: 2022-08-24
Filing date: 2023-07-17
Publication date: 2024-02-29
Also published as: FR3139205A1

Abstract

The invention relates to a pair of adaptive spectacles (1) comprising a first lens (100a), a second lens (100b), a first electronic control device (40) comprising a first wireless communication member (45), and a second electronic control device (50) comprising a second wireless communication member (55); the first wireless communication member (45) and the second wireless communication member (55) being configured to exchange a set of data between them; the first electronic control device (40) and the second electronic control device (50) being further configured to vary the optical power of the first lens (100a) and the optical power of the second lens (100b), respectively, as a function of the set of data. The invention also relates to a method for controlling such a pair of adaptive spectacles (1).

Description

DESCRIPTION

TITLE: Pair of adaptive glasses and method of controlling such a pair of adaptive glasses.

Technical field of the invention

The present invention relates to a pair of adaptive glasses comprising two lenses, as well as a control method for controlling such a pair of adaptive glasses.

State of the art

The invention relates to the field of adaptive glasses. Generally speaking, such adaptive glasses are used in the field of optical correction, particularly for patients with an ocular accommodation problem (presbyopia, accommodation spasm, after cataract surgery, etc.). However, such an application is not limiting because such adaptive glasses can for example be used in the field of virtual reality or augmented reality.

The state of the art offers several solutions to compensate for the lack of accommodation of patients suffering from presbyopia such as glasses, contact lenses or intraocular lenses for example. Patients can wear bifocal glasses that include bifocal lenses that have an insert at the bottom that provides near vision when the user looks down. These bifocal glasses are essentially reading glasses, and have the disadvantage of offering poor quality intermediate vision. It is also possible to opt for progressive lenses which have a continuum of corrections going from the lower part (reading) to the upper part, they allow a certain intermediate vision. However, intermediate vision is sharp only within a narrow area, called the “corridor” of vision, with the outside being blurry. Furthermore, progressive lenses have the limitation of considerably distorting images, by curving straight lines. Considering that 3 diopters are needed for perfect vision between distance and near vision for people with fully developed presbyopia, progressive lenses still suffer from a lack of image quality.

For contact lenses or intraocular lenses, there is a treatment called “monovision”, which consists of adjusting the contact lenses to two different distances for the left and right eyes. This is obviously a compromise that may be uncomfortable, but a user can wear compensation glasses for a given fixed object distance (reading, intermediate, or far). The other option is based on what is called multifocal optics: several images corresponding to near and far distances are projected onto the retina. The multifocal solution allows reading and seeing at near and far distances, but still with somewhat degraded image quality. With this solution, blurry images can be problematic, for example when driving at night.

Finally, it is known from the state of the art to use adaptive glasses comprising electronic elements making it possible to correct the optical power of the lenses. A very large proportion of electronic glasses (or “Smart eye-wears” according to the established Anglo-Saxon terminology), or virtual or augmented reality masks, house all or part of the electronics in one or more of the arms of the glasses. In certain applications, an active function is thus emulated, in order to make a projection or an optical function only on one side. However, other, more sophisticated glasses require an optical function (for example focusing, for presbyopia) which is carried out on both eyes at the same time, and in a coordinated manner. In the case of presbyopia, you will want to adjust the focus correction function synchronously on both eyes. In the case of video or musical content, we will obviously want perfect synchronization of the content on both sides of the pair of glasses. One solution for obtaining such synchronization is to use individual electrical wires in layers or conductive tracks on a flexible element to transmit information or optical power from one side of the pair of glasses to the other.

Although such an architecture is satisfactory in that it allows transmission of power and information from one side of the pair of glasses to the other, it makes the precise balance of the electrical masses of the on-board electronic elements difficult. Furthermore, it is possible that the design and production of a glasses model is made complicated by the positioning and connection of the electronic elements embedded in the glasses, particularly when information or power passes through the face. before by drivers.

Object of the invention

The present invention aims to propose a solution which responds to all or part of the aforementioned problems. This goal can be achieved by implementing a pair of adaptive glasses comprising: a front face comprising a first lens and a second lens; a first branch extending between a first free end portion and a first connecting end portion, said first branch cooperating with the front face at the level of the first connecting end portion; a second branch distinct from the first branch extending between a second free end portion and a second connecting end portion, said second branch cooperating with the front face at the level of the second connecting end portion, of the side opposite the first branch in relation to the front face; a first electronic control device comprising a first computer, a first battery, and a first wireless communication unit; a second electronic control device distinct from the first electronic control device comprising a second computer, a second battery, and a second wireless communication unit.

The first wireless communication member and the second wireless communication member are configured to exchange between them a set of data comprising at least one parameter chosen from: at least one distance between the pair of adaptive glasses and an external object, a distance focusing, a command from a user of the pair of adaptive glasses, an optical power value of the first lens, and an optical power value of the second lens, the first electronic control device and the second electronic control device being further configured to vary respectively the optical power of the first lens and the optical power of the second lens as a function of said set of data.

The arrangements previously described make it possible to propose a pair of adaptive glasses with variable optical power for which coordination between the first lens and the second lens is achieved via wireless communication devices. Thus, it is possible to adjust and coordinate the correction provided by the lenses, which may for example be variable ophthalmic lenses, without requiring the presence of electrical wires passing through the front face.

Generally speaking, when reference is made to the “optical power” applied to the first lens, applied to the second lens, or the synchronization optical power, it is understood that this is an added optical power by the first lens or the second lens. In other words, it is also possible to use instead of the terms “optical power”, the terms “dynamic optical power”, or “added optical power”, or “dynamic addition”.

The pair of adaptive glasses may also have one or more of the following characteristics, taken alone or in combination.

According to one embodiment, the data set includes any data or parameter useful for the operation of electro-variable lenses, for example: an indirect measurement of eye convergence, or pupil size, position of the pupils of the wearer of the pair of adaptive glasses, brightness data, perception of the environment, temperature.

According to one embodiment, the first electronic control device and the second electronic control device are configured to vary respectively the optical power of the first lens and the optical power of the second lens as a function of said set of data via technology using liquid crystals.

According to one embodiment, the electronic control device is configured to vary the optical power of said at least one lens chosen from the first lens and the second lens via a correction member comprising liquid crystals, said correction member being configured to allow the orientation of said liquid crystals by the application of an electric field in order to change the refractive index of said at least one lens.

Those skilled in the art can, for example, refer to the following document: “Li, Guoqiang, et al. ''Switchable electro-optic diffractive lens with high efficiency for ophthalmic applications.'' Proceedings of the National Academy of Sciences 103.16 (2006): 6100-6104", describing a technology using liquid crystals to vary the optical power of a lens.

According to one embodiment, at least one lens chosen from the first lens and the second lens is an ophthalmic lens.

According to one embodiment, the optical power value of the first lens exchanged between the first wireless communication member and the second wireless communication member is determined by a chosen calculator among the first calculator and the second calculator. For example, the optical power value of the first lens may be proportional to the inverse of a distance between the first branch and an external object.

According to one embodiment, the optical power value of the second lens exchanged between the first wireless communication member and the second wireless communication member is determined by a calculator chosen from the first calculator and the second calculator. For example, the optical power value of the second lens may be proportional to the inverse of a distance between the second branch and an external object.

According to one embodiment, the optical power value of the second lens is equal to the optical power value of the first lens.

For example, said optical power values of the first lens and the second lens can be proportional to the inverse of the smallest distance between a distance separating the first branch from an external object, and a distance separating the second branch from the same or another external object. In the particular case of ophthalmic lenses, the result of the calculation of the inverse of the distance expressed in meters can be limited by the addition of the patient, said addition being expressed in diopters. The patient's addition quantifies his need for optical power correction during accommodation, and it is representative of the evolution of presbyopia. Generally speaking, a low addition denotes the beginning of presbyopia, and a high addition (3D) denotes the end of the progression of presbyopia.

According to one embodiment, the pair of adaptive glasses is configured to correct presbyopia.

According to one embodiment, the pair of adaptive glasses is a virtual reality or augmented reality mask.

It is well understood that the arrangements previously described allow the first wireless communication member and the second wireless communication member to communicate with each other without necessarily requiring connection to an element external to the glasses such as a smartphone, or any other type of control unit.

According to one embodiment, the pair of adaptive glasses is symmetrical with respect to a plane passing through a nasal part of the front face. Thus, any technical characteristic of the first branch, of the first lens, and of the first electronic control device can be applied for the second branch, for the second lens and for the second electronic control device. Generally, the first electronic control device is placed on the first branch, and the second electronic control device is placed on the second branch.

In this way, the first branch and the second branch can operate with energy autonomy. This makes it possible to offer a pair of adaptive glasses, where each lens is controlled by an associated electronic control device. In particular, in the case where the exchange of the set of data is no longer possible between the first wireless communication member and the second wireless communication member, the pair of adaptive glasses can continue to operate in a mode gradient or each branch of the pair of adaptive glasses is independent.

Advantageously, the arrangement of the first electronic control device on the first branch and the second electronic control device on the second branch makes it possible to design a greater variety of models for the front face, in particular when this concerns a nasal part. of the front face arranged at the level of the user's nose between the first lens and the second lens. Indeed, having connection wires in the front face imposes constraints on the materials, shapes, and attachments of the nasal part. Such a constraint is therefore absent for the pair of adaptive glasses.

Furthermore, the arrangement of the first electronic control device on the first branch and the second electronic control device on the second branch makes it possible to guarantee a good balance of electrical masses between the first electronic control device, and the second electronic control device. order.

According to one embodiment, at least one lens chosen from the first lens and the second lens comprises: a primary lens comprising a first transparent material, and having a first primary surface and a second primary surface, said primary lens being configured to transmit light the light between the first primary surface and the second primary surface; a secondary glass comprising a second transparent material, and having a first secondary surface and a second secondary surface, said secondary glass being configured to transmit light between the first secondary surface and the second secondary surface; a main chamber delimiting a main volume between the second primary surface and the first secondary surface; and a membrane comprising a deformable part, said deformable part being at least partially included in the main chamber, and completely separating the main chamber into at least a first lens chamber configured to comprise at least one primary fluid and a second lens chamber configured to comprise at least one secondary fluid, the first lens chamber being included between the second primary surface and the deformable part, and the second lens chamber being included between the deformable part and the first secondary surface.

According to one embodiment, the general architecture and operation of said at least one lens can be deduced by those skilled in the art based on document W02018/007425.

According to one embodiment, said at least one lens chosen from the first lens and the second lens comprises a primary fluid passage comprising a primary channel configured to transport the primary fluid and to open into the first lens chamber; and a secondary fluid passage including a secondary channel configured to transport the secondary fluid and to open into the second lens chamber.

According to one embodiment, the electronic control device is configured to vary the optical power of said at least one lens chosen from the first lens and the second lens via a fluid displacement member configured: to allow moving the primary fluid into or out of the first lens chamber through the primary fluid passage; and/or to allow movement of the secondary fluid into or out of the second lens chamber through the secondary fluid passage.

According to one embodiment, the fluid displacement member is an electrostatic actuation device of the type of one of those described in the embodiments described in document WO2018/041866.

According to one embodiment, the pair of adaptive glasses comprises at least one measurement system configured to detect the presence of an external object, and to communicate to at least one electronic control device chosen from the first electronic control and control device and the second electronic control device, a value of a distance separating said at least one measuring system and said external object.

According to one embodiment, the data set includes the value of the distance separating the measurement system and the external object.

According to one embodiment, the data set includes an estimated value of the focusing distance. For example, such an estimated value of the focusing distance can be determined by an eye tracking system, or “Eye-T racking” according to the established Anglo-Saxon terminology.

According to one embodiment, said at least one measurement system is a time of flight sensor (or ToF for “Time of Flight” according to the established Anglo-Saxon name).

According to one embodiment, said at least one measurement system is a distance sensor.

According to one embodiment, said at least one measuring system comprises at least one viewing angle sensor configured to determine the value of a distance separating said at least one measuring system and said external object by an angle measurement .

According to one embodiment, the at least one measuring system is arranged on at least one connection end portion chosen from the first connection end portion and the second connection end portion.

According to one embodiment, the pair of adaptive glasses comprises a first measuring system arranged on the first branch, for example at the first connection end portion; and a second measuring system arranged on the second branch, for example at the level of the second connection end portion.

According to one embodiment, the measurement system is configured to detect the presence of the external object when said external object is placed in a detection volume of the measurement system. For example, said detection volume is delimited by a cone having a vertex coinciding with the measurement system, and a directing line directed in a direction of observation of the use of the pair of adaptive glasses. In other words, the detection volume is directed towards the front of the pair of adaptive glasses.

According to one embodiment, the first electronic control device and the first measuring system are arranged on the first branch, and the second electronic control device and the second measuring system are arranged on the second branch so that the front face is devoid of electronic element.

In this way, it is possible for an eyewear manufacturer to design and design a new frame for the pair of adaptive glasses while retaining the possibility of controlling the lenses via the first and second electronic control devices arranged on the first and second branch.

According to one embodiment, at least one portion of the first branch is configured to pivot relative to the front face via a first hinge, at least one portion of the second branch is configured to pivot relative to the front face via a second hinge, the first wireless communication member, and the second wireless communication member are electrically connected respectively to a first antenna and to a second antenna, said first and second antennas being configured to allow the exchange of the set of data between the first wireless communication device and the second wireless communication device; the first antenna being included in the first hinge, and the second antenna being included in the second hinge.

According to one embodiment, the first antenna and the second antenna are arranged respectively at the level of the first link end portion, and at the level of the second link end portion.

In this way, it is possible to exchange the data set using extremely low radio power to establish communication between the first wireless communication means and the second wireless communication means. In addition, the positioning at the front face of the first antenna and the second antenna minimizes the quantity of waves absorbed by the head of the user of the pair of adaptive glasses. Generally speaking, sufficient power radiated by the first antenna or the second antenna is approximately 50 pW, which corresponds to an emitted power which is several orders of magnitude below the standards in force.

Advantageously, the inclusion of the first antenna in the first hinge makes it possible to simplify the architecture of the first wireless communication member.

According to one embodiment, the first calculator comprises a first microcontroller. According to one embodiment, the second calculator comprises a second microcontroller.

According to one embodiment, at least one antenna chosen from the first antenna and the second antenna is electrically connected to at least one electronic control device chosen from the first electronic control device and the second electronic control device, via of a flexible circuit so as to allow the transmission of the set of data.

According to one embodiment, the first hinge and the second hinge comprise a metallic material.

According to one embodiment, the first hinge and the second hinge have an elongated shape along an axis parallel to a hinge axis, so that the first hinge is parallel to the second hinge.

Thus, and advantageously, the fact that the first hinge and the second hinge are positioned as two parallel segments separated by a few centimeters makes it possible to optimize the coupling between the first antenna and the second antenna.

According to one embodiment, the first hinge constitutes the first antenna, and/or the second hinge constitutes the second antenna.

It is therefore well understood that the first hinge and/or the second hinge serve as antennas to allow the exchange of data between the first wireless communication member and the second wireless communication member. The design of the pair of adaptive glasses is therefore simplified.

According to one embodiment, the first antenna is arranged at the first link end portion, and the second antenna is arranged at the second link end portion.

According to one embodiment, the first wireless communication member and the second wireless communication member are configured to exchange the set of data with each other via a wireless transmission technique. For example, the wireless transmission technique includes low-energy Bluetooth, near-field magnetic field communication, near-field communication, ultrasound, electromagnetic waves of other frequencies, or any other means.

According to one embodiment, at least one electronic control device chosen from the first electronic control device and the second electronic control device comprises a user interface configured to receive at least one command coming from the user of the pair of glasses adaptive, said at least one command being configured to be included in the data set.

The aim of the invention can also be achieved by implementing a control method for controlling a pair of adaptive glasses of the type of one of those described above, the control method comprising: a step of reception in which a set of data is received by at least one electronic control device chosen from the first electronic control device and the second electronic control device, said set of data comprising at least one parameter chosen from: a distance between the pair adaptive glasses and an external object, a focusing distance, a user control of the pair of adaptive glasses, an optical power value of the first lens, and an optical power value of the second lens; an exchange step, in which the data set is exchanged by a wireless transmission technique between the first wireless communication member and the second wireless communication member; an optical power correction step, in which the optical power of the first lens and the optical power of the second lens are corrected according to the data set. The arrangements previously described make it possible to propose a control method for controlling a pair of adaptive glasses in order to adapt the correction provided by the pair of glasses in relation to a set of data received by the pair of adaptive glasses. Such a process makes it possible in particular to correct presbyopia, or to coordinate the vision offered by virtual reality glasses. In the case of optical correction, the method is advantageous in that it makes it possible to provide an optical correction which is carried out on the two ophthalmic lenses and in a coordinated manner.

The control method may also have one or more of the following characteristics, taken alone or in combination.

According to one embodiment, during the optical power correction step, the optical power of at least one lens chosen from the first lens and the second lens is corrected by the application of an electric field in order to change the refractive index of said at least one lens. According to one embodiment, the exchange step comprises the following steps, implemented simultaneously or not: a first transmission step in which the first wireless communication member transmits at least one first parameter of the set of data intended for the second wireless communication unit; a second transmission step in which the second wireless communication unit transmits at least one second parameter of the data set to the first wireless communication unit; a first reception step in which the first wireless communication device receives said at least one second parameter of the data set transmitted by the second wireless communication device; a second reception step in which the second wireless communication unit receives said at least one first parameter of the data set transmitted by the first wireless communication unit.

According to one embodiment, the optical power correction step is implemented so as to cause the optical power value of the first lens and the second lens to tend towards the same optical power value. In this way, the optical correction provided on the two lenses is identical at the end of the optical power correction step, the user's vision comfort is then improved.

According to one embodiment, the control method comprises a step of determining an optical synchronization power, the optical power correction step then comprising the correction of the optical power of the first lens and the second lens so as to that the optical power of said lenses is equal to the optical synchronization power thus determined.

According to one embodiment, the step of determining an optical synchronization power comprises at least one of the following steps: a first step of calculating a first desired optical power value, equal to the inverse of a first distance between the pair of adaptive glasses and an external object; a second step of calculating a second desired optical power value, equal to the reciprocal of a second distance between the pair of adaptive glasses and an external object; a step of selecting the optical synchronization power, in which the optical synchronization power is determined to be equal to the greater value between the first desired optical power value, and the second desired optical power value.

According to one embodiment, the optical power correction step is implemented during a correction period strictly less than 2 s, and in particular less than or equal to 1 s.

In this way, it is possible to synchronize the optical powers of the two lenses in a correction period comparable to the time of adaptation of the focus, or the convergence of the eyes.

According to one embodiment, during the optical power correction step, the optical power of the at least one lens chosen from the first lens and the second lens is corrected by deforming the deformable part of the membrane in a corrected position , said corrected position corresponding to a deformation of the deformable part so as to vary a volume of the first lens chamber, and a volume of the second lens chamber.

According to one embodiment, the optical power correction step is implemented so that the optical power of the first lens is substantially equal to the optical power of the second lens.

According to one embodiment, the deformation of the deformable part of the membrane is carried out by a variation in capacitance between two electrodes offset relative to the membrane. Thus, the optical power correction step may include a step of establishing a capacitance value in which a capacitance variation value is determined. For example, said capacitance variation value to be provided for the correction can be determined by a correspondence table recorded in a memory of the first electronic control device and/or the second electronic control device. Said correspondence table being configured to associate an optical power value to be applied to the lens with a capacitance value to be applied between the two electrodes. The step of correcting the optical power can then comprise a step of applying said capacitance variation value between the two electrodes, so as to cause a movement of the deformable part of the membrane.

According to one embodiment, the ordering method comprises a step of updating the correspondence table.

According to one embodiment, the pair of adaptive glasses comprises at least one measurement system configured to detect the presence of an external object, and in which the step of receiving a set of data comprises: a step of measuring in in which a distance is measured between the measuring system and the external object, and a communication step in which said distance is communicated by the measuring system to at least at least one electronic control device chosen from the first electronic control device and the second electronic control device, the data set then comprising said distance.

According to one embodiment, the first electronic control device is electrically connected to a first measuring system, and the second electronic control device is electrically connected to a second measuring system, the measuring step comprising a first measuring step in which a first distance is measured between the first measuring system and the external object, and a second measuring step in which a second distance is measured between the second measuring system and the external object; the communication step then comprising the communication of the first distance by the first measuring system to the first electronic control device and the communication of the second distance by the second measuring system to the second electronic control device, the set of data then comprising said first distance and the second distance.

Thus and advantageously, the optical power correction step allows both the correction made during this step to be synchronized at any time between the first lens and the second lens, and also allows the exchange of the assembly data which includes the data measured by the first measurement system and the second measurement system respectively equipping the first branch and the second branch. This is particularly advantageous for improving the correction of the pair of adaptive glasses because the first measurement system and the second measurement system measure different data on the first branch and on the second branch. Synergistically, the measurement of the first distance by the first measuring system and the second distance by the second measuring system makes it possible to obtain measurement redundancy making this measurement more reliable.

According to one embodiment, the control method further comprises a data encryption step implemented before the exchange step, in which the set of data is encrypted, the exchange step then comprising the exchange of the encrypted data set between the first wireless communication unit and the second wireless communication unit.

In this way, it is possible to prevent two pairs of adaptive glasses close to each other from exchanging their data set with each other. Furthermore, it is also possible to avoid consultation of the data set by any other detection system.

Summary description of the drawings

Other aspects, aims, advantages and characteristics of the invention will appear better on reading the following detailed description of preferred embodiments thereof, given by way of non-limiting example, and made with reference to the appended drawings. on which ones :

Figure 1 is a schematic view of the pair of adaptive glasses seen from above according to one embodiment of the invention.

Figure 2 is a schematic perspective view of the pair of adaptive glasses, according to one embodiment of the invention.

Figure 3 is a schematic sectional view of a lens of the pair of adaptive glasses according to one embodiment of the invention.

Figure 4 is a schematic view of a fluid displacement member according to one embodiment of the invention.

Figure 5 is a schematic view of a control method according to one embodiment of the invention.

detailed description

In the figures and in the remainder of the description, the same references represent identical or similar elements. In addition, the different elements are not represented to scale so as to favor the clarity of the figures. Furthermore, the different embodiments and variants are not exclusive of each other and can be combined with each other.

As illustrated in Figures 1 and 2, the invention relates to a pair of adaptive glasses 1. The pair of adaptive glasses 1 comprises a face front 3 comprising a first lens 100a and a second lens 100b. The first lens 100a is generally included in a first circle which is connected with a second circle including the second lens 100b, via a bridge forming all or part of a nasal part 5 of the front face 3.

The pair of adaptive glasses 1 further comprises a first branch 10 extending between a first free end portion 11, also called the first sleeve, and a first connecting end portion 12. The first branch 10 cooperates with the front face 3 at the first connecting end portion 12. For example at least one portion of the first branch 10 is configured to pivot relative to the front face 3 via a first hinge 14. More particularly, it is possible for the entirety of the first branch 10 to cooperate by pivoting with the front face 3 via the first hinge 14. The first hinge 14 then comprising a first tenon fixed to an external end of the first opposite circle at the nasal part 5 relative to the second circle. The pair of adaptive glasses 1 also comprises a second branch 30 distinct from the first branch 10 extending between a second free end portion 31, also called the second sleeve, and a second connecting end portion 32. The second branch 30 then cooperates with the front face 3 at the level of the second connection end portion 32, on the side opposite the first branch 10 with respect to the front face 3. In the same way as for the first branch 10, the second branch 30 can cooperate by pivoting with the front face 3 via a second hinge 34. For example the second hinge 34 can comprise a second tenon fixed to an external end of the second circle opposite the nasal part 5 in relation to in the first circle. In general, the first hinge 14 and/or the second hinge 34 comprise a larger dimension of the order of a few centimeters, and comprise a metallic material.

As illustrated in Figure 1, the pair of adaptive glasses 1 can be symmetrical with respect to a plane denoted "X" passing through the nasal part 5 of the front face 3. Thus, in the remainder of the description, any characteristic technique of the first branch 10 or the elements associated with it, and of the first lens 100a can be applied for the second branch 30, and for the second lens 100b.

Generally speaking, the first electronic control device 44 and the second electronic control device 45 are configured to vary respectively the optical power of the first lens 100a and the optical power of the second lens 100b as a function of said set of data by via a correction member 701, or a fluid displacement member 700.

Thus, according to a first variant, the electronic control device 44, 45 is configured to vary the optical power of at least one lens chosen from the first lens 100a and the second lens 100b via a correction member 701 comprising liquid crystals. The correction member 701 can in particular be configured to allow the orientation of said liquid crystals by the application of an electric field in order to change the refractive index of said at least one lens.

Those skilled in the art can, for example, refer to the following document: “Li, Guoqiang, et al. "Switchable electro-optic diffractive lens with high efficiency for ophthalmic applications." Proceedings of the National Academy of Sciences 103.16 (2006): 6100-6104,” describing a technology using liquid crystals to vary the optical power of a lens.

According to a second variant, illustrated in Figure 3, at least one lens chosen from the first lens 100a and the second lens 100b is an ophthalmic lens corresponding to one of the embodiments described in document WO2018/007425.

Generally speaking, the first lens 100a and the second lens 100b have an identical architecture and comprise a primary lens 120, a secondary lens 160, a main chamber 140, a membrane 400, a primary fluid and a secondary fluid.

The primary glass 120 may include a first transparent material, and has a first primary surface 210 and a second primary surface 220. These surfaces may be configured to transmit light from one side or end to the other. More specifically, the primary glass 120 may be configured to transmit light from the first primary surface 210 to the second primary surface 220 through the first transparent material. Light can travel further and can pass through the main chamber 140 and the membrane 400 to reach the secondary glass 160. The secondary glass 160 can include a second transparent material, and can have a first secondary surface 610 and a second secondary surface 620. These surfaces can also be configured to transmit light from one side or end to the other. More specifically, the secondary glass 160 may be configured to transmit light from the first secondary surface 610 to the second secondary surface 620 through the second transparent material. The main chamber 140 delimits a main volume between the second primary surface 220 and the first secondary surface 610 and the main chamber 140 can be defined between the second primary surface 220 and the first secondary surface 610.

The membrane 400 comprises a deformable part 470 located at least partially in the main chamber 140, and which separates the main chamber 140 into at least a first lens chamber 110 and a second lens chamber 115. The first lens chamber 110 can be configured to comprise the primary fluid and can be included between the second primary surface 220 and the deformable part 470. On the other side of the membrane 400, between the deformable part 470 and the first secondary surface 610, is located the second chamber of lens 115 which can be configured to understand the secondary fluid.

In the embodiment illustrated in Figure 3, said at least one lens chosen from the first lens 100a and the second lens 100b comprises a primary fluid passage 111 comprising a primary channel configured to transport the primary fluid and to open into the first lens chamber 110; and a secondary fluid passage 121 including a secondary channel configured to transport the secondary fluid and to open into the second lens chamber 115. The primary fluid passage 111, and the secondary fluid passage 121 may be configured to fluidly communicate with a fluid displacement member 700 which will be described later.

Referring again to Figures 1 and 2, the pair of adaptive glasses comprises: a first electronic control device 40 comprising a first computer 41, a first battery 43, and a first wireless communication member 45; and a second electronic control device 50 distinct from the first electronic control device 40 comprising a second computer 51, a second battery 53, and a second wireless communication unit 55.

The first wireless communication member 45 and the second wireless communication member 55 are also configured to exchange between them a set of data comprising at least one parameter chosen from: at least one distance between the pair of adaptive glasses 1 and a external object, a focusing distance, a command from a user of the pair of adaptive glasses 1, a optical power value of the first lens 100a, and an optical power value of the second lens 100b.

As will be detailed below, the first lens 100a and the second lens 100b are respectively characterized by an optical power value which can vary between an initial optical power value and a final optical power value. Initially, the first lens 100a is therefore characterized by a first initial optical power value, and the second lens is characterized by a second initial optical power value. These optical power values can be included in the set of data and be exchanged between the first electronic control device 40, and the second electronic control device 50. Subsequently, the first calculator 41, and the second calculator 51 can determine a synchronization optical power value intended to be exchanged between the first electronic control device 40, and the second electronic control device 50 in order to vary the initial optical power values towards final optical power values which tend towards said synchronization optical power value.

According to one embodiment, the first computer 41 comprises a first microcontroller, and the second computer 51 comprises a second microcontroller.

Generally speaking, the first electronic control device 40 is arranged on the first branch 10, and the second electronic control device 50 is arranged on the second branch 30. Figure 1 illustrates in particular an embodiment in which the first computer 41 and the first wireless communication member 45 are arranged on an electronic card at a central position of the first branch 10, and are electrically connected to the first battery 43 which is arranged at the level of the first sleeve, that is to say at the level of the first free end portion 11. Symmetrically, the second calculator 51 and the second wireless communication member 55 are arranged on an electronic card at a central position of the second branch 30, and are electrically connected to the second battery 53 which is arranged at the level of the second sleeve, that is to say at the level of the second free end portion 31.

Advantageously, the arrangement of the first electronic control device 40 on the first branch 10 and the second electronic control device 50 on the second branch 30 makes it possible to design a greater variety of models for the front face 3. In fact, the fact of having connection wires in the front face 3 imposes constraints on the materials, shapes, and fasteners of the nasal part 5. Such a constraint is absent for the pair of adaptive glasses 1 object of the invention.

Furthermore, the arrangement of the first electronic control device 40 on the first branch 10 and the second electronic control device 50 on the second branch 30 makes it possible to guarantee a good balance of the electrical masses between the first electronic control device 40, and the second electronic control device 50, and also makes it possible to balance the weights carried by the pair of adaptive glasses 1.

In addition, the presence of the first battery 43 and the second battery 53 allows the first branch 10 and the second branch 30 to operate with energy autonomy. This makes it possible to offer a pair of adaptive glasses 1, where each lens 100a, 100b is controlled by an associated electronic control device 40, 50.

In particular, in the case where the exchange of the set of data is no longer possible between the first wireless communication member 45 and the second wireless communication member 55, the pair of adaptive glasses 1 can continue to operate. in a degraded mode where each branch 10, 30 of the pair of adaptive glasses 1 is autonomous.

It is well understood that the arrangements previously described allow the first wireless communication member 45 and the second wireless communication member 55 to communicate with each other without necessarily requiring connection to an element external to the glasses such as a smartphone, or any other device. what other type of control unit.

Generally speaking, the first wireless communication member 45 and the second wireless communication member 55 are electrically connected respectively to a first antenna 16 and to a second antenna 36. These first and second antennas 16, 36 are configured to allow the exchange of the set of data between the first wireless communication member 45 and the second wireless communication member 55. The first antenna 16 and the second antenna 36 can be electrically connected respectively to the first electronic control device 40 and to the second electronic control device 50 via a flexible circuit so as to allow the transmission of the set of data.

As illustrated in Figures 1 and 2, the first antenna 16 can be included in the first hinge 14, and the second antenna 36 can be included in the second hinge 34. More precisely, the first hinge 14 constitutes the first antenna 16, and the second hinge 34 constitutes the second antenna 36. It is therefore well understood that the first hinge 14 and/or the second hinge 34 serve as antennas to allow the exchange of data between the first communication member without wire 45 and the second wireless communication member 55. The design of the pair of adaptive glasses 1 is therefore simplified.

The arrangements previously described make it possible to arrange the first antenna 16 and the second antenna 36 respectively at the level of the first connection end portion 12, and at the level of the second connection end portion 32. In this way, it is possible to exchange the set of data using extremely low radio power to establish communication between the first wireless communication member 45 and the second wireless communication member 55. In addition the positioning at the level of the front face 3 of the first antenna 16 and the second antenna 36 minimizes the quantity of waves absorbed by the head of the user of the pair of adaptive glasses 1. Generally, the sufficient power radiated by an antenna will be around 50 pW, this which corresponds to an emitted power which is several orders of magnitude below the standards in force 20 mW.

According to one embodiment, the first hinge 14 and the second hinge 34 have an elongated shape along an axis parallel to a hinge axis, so that the first hinge 14 is parallel to the second hinge 34. Thus, and advantageously, the fact that the first hinge 14 and the second hinge 34 are positioned as two parallel segments separated by a few centimeters makes it possible to optimize the coupling between the first antenna 16 and the second antenna 36.

The first wireless communication member 45 and the second wireless communication member 55 are configured to exchange the data set with each other via a wireless transmission technique. For example, the wireless transmission technique includes low-consumption Bluetooth called BLE or “Bluetooth Low Energy” according to the established Anglo-Saxon name, near-field magnetic field communication called NFMI or “Near-Field Magnetic Induction communication” according to the established Anglo-Saxon name, near field communication called NFC or “Near Field Communication” according to the established Anglo-Saxon name, ultrasound, electromagnetic waves of other frequencies, or any other means.

The first electronic control device 40 and the second electronic control device 50 are further configured to vary respectively the optical power of the first lens 100a and the optical power of the second lens 100b as a function of said set of data. For this, it can be provided that the electronic control devices 40, 50 are configured to implement all or part of the steps of the control method which will be described later.

According to one embodiment, the optical powers of the first lens 100a and the second lens 100b can be varied as a function of a distance between the pair of adaptive glasses 1 and an external object. For this, the pair of adaptive glasses 1 may comprise at least one measuring system 47, 57 configured to detect the presence of an external object, and to communicate to at least one electronic control device chosen from the first electronic control device 40 and control and the second electronic control device 50, a value of a distance separating said at least one measuring system 47, 57 and said external object. In this case, the data set includes the value of the distance separating the measuring system 47, 57 and the external object. As shown in Figures 1 and 2, the at least one measuring system 47, 57 is arranged on at least one connection end portion chosen from the first connection end portion 12 and the second portion d connecting end 32. In order to offer a pair of symmetrical adaptive glasses 1, and to make the distance measurement more reliable, it is generally provided that the at least one measuring system 47, 57 comprises a first measuring system 47 arranged on the first branch 10, for example at the first connection end portion 12, and a second measuring system 57 arranged on the second branch 30, for example at the second connection end portion 32. According to this non-limiting variant, the first electronic control device 40 and the first measuring system 47 are arranged on the first branch 10, and the second electronic control device 50 and the second measuring system 57 are arranged on the second branch 30 of so that the front face 3 is devoid of electronic element. In this way, it is possible for an eyewear manufacturer to design and design a new frame for the pair of adaptive glasses 1 while retaining the possibility of controlling the lenses 100a, 100b via the first and second electronic control devices 40, 50 arranged on the first and second branch 10, 30.

The type of measurement system 47, 57 used is not limited, and may include for example a time of flight sensor or ToF for “Time of Flight” according to the established Anglo-Saxon name, or an angle sensor. aiming configured to determine the value of a distance separating said at least one measuring system 47, 57 and said external object by an angle measurement, or any other type of system or sensor making it possible to measure a distance. In particular, the measuring system 47, 57 is configured to detect the presence of the external object when said external object is placed in a detection volume of the measuring system 47, 57. For example said detection volume is delimited by cone having a vertex coinciding with the measurement system 47, 57, and a directing line directed in a direction of observation of the use of the pair of adaptive glasses 1. In other words, the detection volume is directed towards the front of the pair of adaptive glasses 1. As will be described later, and in particular with reference to the method of controlling the pair of adaptive glasses 1, the distances measured by the measuring systems 47, 57, will be added to the set of data, in order to correct the value of the optical power of the lenses 100a, 100b in relation to these distances.

As indicated previously, the optical power value to be applied to the first lens 100a, and the optical power value to be applied to the second lens 100b can be determined by a calculator chosen from the first calculator 41 and the second calculator 51. For example the optical power value to be applied to the first lens 100a can be proportional to the inverse of a first distance between the first branch 10 and an external object. This first distance can be measured by the first measuring system 47. Furthermore, the optical power value to be applied to the second lens 100b can be proportional to the inverse of a second distance between the first branch 10 and an external object. . This second distance can be measured by the second measuring system 57.

However, it is particularly advantageous for the comfort of the user of the pair of adaptive glasses 1 to have synchronized correction on both eyes. Thus, following the determination of the inverse of the first distance and the inverse of the second distance, these data can be exchanged between the first wireless communication member 45 and the second wireless communication member 55. The values of optical power to be applied to the first lens 100a and the second lens 100b are then set to be equal to the synchronization optical power value, which is proportional to the inverse of the smallest distance between the first distance and the second distance. In this case the optical power value of the second final lens 100b is then equal to the final optical power value of the first lens 100a, and to the synchronization optical power value. Then, each electronic control device 45, 55 can be configured to vary the optical power of the first lens 100a and the second lens 100b via at least one fluid displacement member 700 which is configured: to allow moving the primary fluid into or out of the first lens chamber 110 through the primary fluid passage 111; and/or to allow movement of the secondary fluid into or out of the second lens chamber 115 through the secondary fluid passage 121.

Advantageously, the at least one fluid displacement member 700 comprises a first fluid displacement member disposed on the first branch 10 which is associated with the first lens 100a, and a second fluid displacement member disposed on the second branch 30 which is associated with the second lens 100b.

According to one embodiment, the fluid displacement member 700 is an electrostatic actuation device of the type of one of those described in the embodiments described in document WO2018/041866.

An example of a fluid displacement member 700 is shown in Figure 4. This fluid displacement member 700 is described below for the displacement of the primary fluid and the secondary fluid between the fluid displacement member 700 and the first lens 100a, but it is well understood that a second similar fluid displacement member 700 can be implemented in the same manner to allow the movement of said fluids between this second fluid displacement member 700 and the second lens 100b. As shown in Figure 4, the fluid displacement member 700 comprises a first buffer chamber 710 configured to include the primary fluid, and a second buffer chamber 720 configured to include the secondary fluid. The primary fluid can be configured to pass through the primary fluid passage 111 opening into the first buffer chamber 710, which fluidly communicates with the primary fluid passage 111 of the first lens 100a. The secondary fluid may be configured to pass through the secondary fluid passage 121 which fluidly communicates with the secondary fluid passage 121 of the first lens 100a. It is therefore well understood that the first buffer chamber 710 communicates with the first lens chamber 110 via the primary fluid passage 111, and that the second buffer chamber 720 communicates with the second lens chamber 115 via the secondary fluid passage 121.

The first buffer chamber 710 may be at least partially defined by a primary separation wall 200 comprising a plurality of primary fluid passage orifices 230 configured to allow the passage of the primary fluid. The second buffer chamber 720 may be at least partially defined by a secondary separation wall 300 comprising a plurality of secondary fluid passage orifices 330 configured to allow the passage of the secondary fluid.

An electrode chamber 500 can then be located between the first buffer chamber 710 and the second buffer chamber 720, and in particular be defined at least partially by the primary separation wall 200 and the secondary separation wall 300. The electrode chamber may include a deformable electrode 600 disposed in the electrode chamber 500 so as to form a first electrode chamber 615 and a second electrode chamber 625 which are isolated from each other, such that no fluid cannot pass through the deformable electrode 600. On the other hand, the first electrode chamber 615 can fluidly communicate with the first buffer chamber 710 via at least one primary fluid passage orifice 230, and the second electrode chamber 625 can fluidly communicate with the second buffer chamber 720 via at least one secondary fluid passage port 330.

The fluid displacement member 700 may also include electrodes which form part of the primary separation wall 200 and the secondary separation wall 300. These electrodes can then be configured to cooperate with the deformable electrode 600 so as to actuate the deformable electrode 600 between different positions to move the primary fluid and the secondary fluid. This movement of fluid at the level of the fluid movement member generates a movement of the fluids also at the level of the first lens 100a, in order to vary the position of the membrane 400 of the first lens 100a, and thus allow the variation of the optical power value of the first lens 100a.

Finally, and according to an embodiment not shown, at least one electronic control device chosen from the first electronic control device 40 and the second electronic control device 50 comprises a user interface configured to receive at least one command coming from the user of the pair of adaptive glasses 1, said at least one command being configured to be included in the data set. For example this command can correspond to a user instruction to stop the correction provided by the pair of adaptive glasses 1, or to manually set a synchronization optical power value to be applied to the first lens 100a, or to the second lens 100b.

The arrangements previously described make it possible to propose a pair of adaptive glasses 1 with variable optical power for which coordination between the first lens 100a and the second lens 100b is achieved via wireless communication members 45, 55. Thus, it is possible to adjust and coordinate the correction provided by the lenses 100a, 100b, which may for example be variable ophthalmic lenses, without requiring the presence of electrical wires passing through the front face 3. The pair of adaptive glasses 1 can therefore be configured to correct presbyopia, or be a virtual reality or augmented reality mask.

The invention also relates to a control method for controlling a pair of adaptive glasses 1 of the type of one of those described above. One embodiment of such a control method is illustrated in Figure 5.

The control method firstly comprises a reception step El in which a set of data is received by at least one electronic control device chosen from the first electronic control device 40 and the second electronic control device 50. set of data comprises at least one parameter chosen from: a distance between the pair of adaptive glasses 1 and an external object, a focusing distance, a command from a user of the pair of adaptive glasses 1, an optical power value of the first lens 100a, and an optical power value of the second lens 100b. It is well understood that this list is not exhaustive, and that depending on the embodiment, the data set may include any data or parameter useful for the operation of electro-variable lenses, for example: an indirect measurement of convergence of eyes, or pupil size, position of the pupils of the wearer of the pair of adaptive glasses, brightness data, perception of the environment, temperature.

As illustrated in Figure 5, and according to a variant in which the pair of adaptive glasses 1 comprises at least one measurement system 47, 57 configured to detect the presence of an external object, the reception step El d' a data set comprises: a measuring step E10 in which a distance is measured between the measuring system 47, 57 and the external object, and a communication step E13 in which said distance is communicated by the measuring system 47, 57 to at least at least one electronic control device chosen from the first electronic control device 40 and the second electronic control device 50, the whole of data then comprising said distance.

More particularly, if the pair of adaptive glasses 1 comprises a first measuring system 47 electrically connected to the first electronic control device 40, and a second measuring system 57 electrically connected to the second electronic control device 50, the measuring step E10 comprises a first measuring step Eli in which a first distance is measured between the first measuring system 47 and the external object, and a second measuring step E12 in which a second distance is measured between the second measuring system 57 and the external object.

In this case, the communication step E13 then comprises the communication of the first distance by the first measuring system 47 to the first electronic control device 40 and the communication of the second distance by the second measuring system 57 to the second electronic device control 50, and the data set then includes the first distance and the second distance.

The control method further comprises an exchange step E3, in which the set of data is exchanged by a wireless transmission technique between the first wireless communication member 45 and the second wireless communication member 55. According to a non-limiting variant, the control method may include a data encryption step E2 implemented before this exchange step E3. During this encryption step E2, the data set is encrypted, using any encryption method accessible to those skilled in the art. In this case, the exchange step E3 then comprises the exchange of the encrypted data set between the first wireless communication member 45 and the second wireless communication member 55. In this way, it is possible to prevent two pairs of adaptive glasses 1 close to each other from exchanging their set of data with each other. Furthermore, it is also possible to avoid consultation of the data set by any other detection system.

Generally speaking, the exchange step E3 comprises the following steps, implemented simultaneously or not: a first transmission step E31 in which the first wireless communication unit 45 transmits at least one first parameter of the data set to the second wireless communication unit 55; a second transmission step E33 in which the second wireless communication unit 55 transmits at least one second parameter of the data set to the first wireless communication unit 45; a first reception step E32 in which the first wireless communication unit 45 receives said at least one second parameter of the data set transmitted by the second wireless communication unit 45; a second reception step E34 in which the second wireless communication unit 55 receives said at least one first parameter of the data set transmitted by the first wireless communication unit 55.

For example, if the control method comprises a first measurement step Eli, the first transmission step E31 may include the transmission by the first wireless communication unit 45 of the first distance to the second wireless communication unit 55. The reverse process can be implemented in the other direction if the control method includes a second measurement step E12.

Once the data has been exchanged between the electronic control devices 45, 55, the control method may include a step of determining an optical synchronization power E4, for example implemented by the first calculator 41 and/or the second calculator 51. The step of determining an optical synchronization power E4 comprises at least one of the following steps: a first step of calculating E41 of a first desired optical power value, equal to the inverse of a first distance between the pair of adaptive glasses 1 and an external object; a second step E42 of calculating a second desired optical power value, equal to the reciprocal of a second distance between the pair of adaptive glasses 1 and an external object; a step E43 of selecting the optical synchronization power, in which the optical synchronization power is determined to be equal to the greater value between the first desired optical power value, and the second desired optical power value.

Thus, at the end of the step of determining an optical synchronization power E4, an optical synchronization power value is determined.

The control method then comprises an optical power correction step E5, in which the optical power of the first lens 100a and the optical power of the second lens 100b is corrected according to the set of data. As indicated above, before implementing the optical power correction step E5, the first lens 100a can be characterized by a first initial optical power value, and the second lens can be characterized by a second initial optical power value. Following the implementation of the optical power correction step E5, the values of the optical powers of the lenses 100a, 100b are varied to achieve a first final optical power value for the first lens 100a, and a second power value final optics for the second lens 100b. It is particularly advantageous for the optical power correction step E5 to be implemented so as to fix the first final optical power value and the second final optical power value towards the same value, and in particular towards the optical power value synchronization determined during the step of determining an optical synchronization power E4. In this way, the optical correction provided on the two lenses 100a, 100b is identical at the end of the optical power correction step E5, and the user's viewing comfort is then improved. Generally speaking, the optical power correction step E5 is implemented during a correction period strictly less than 1 s, and in particular less than or equal to 2 s. In this way, it is possible to synchronize the optical powers of the two lenses 100a, 100b in a correction period comparable to the adaptation time of the focus of the eyes.

To implement the optical power correction step E5, different solutions can be considered.

According to a first variant in which the pair of adaptive glasses comprises a correction member, the optical power correction step E5 can be implemented by the application of an electric field in order to change the refractive index of one or both lenses from the first lens 100a and the second lens 100b. According to a second variant using a fluid displacement member 700, the optical power of the at least one lens chosen from the first lens 100a and the second lens 100b can be corrected by deforming the deformable part 470 of the membrane 400 in a position corrected. This corrected position corresponds for example to a deformation of the deformable part 470 so as to vary a volume of the first lens chamber 110, and a volume of the second lens chamber 115. For example, such a variation can be implemented implemented by actuation of the fluid displacement member 700 in a manner as described above. In other words, the deformation of the deformable part 470 of the membrane 400 can be carried out by a variation in capacitance between two electrodes offset relative to the membrane 400. These electrodes can be included in the primary separation wall 200 and the secondary separation wall 300. Thus, the optical power correction step E5 may include a step of establishing a capacitance value E51 in which a capacitance variation value is determined. For example, said capacitance variation to be made for the correction can be determined by a correspondence table recorded in a memory of the first electronic control device 40 and/or the second electronic control device 50. Said correspondence table being configured to associate an optical power value to be applied to the lens 100a, 100b with a capacitance value to be applied between the two electrodes.

An example of a correspondence table is given in table 1 below, the optical power being expressed in hundredths of a diopter and the capacitance applied between the electrodes in pico farad.

[Table 1]

Table 1: Correspondence between the optical power of the lens and the capacitance applied between two electrodes of the fluid displacement member 700. A negative sign (respectively positive) is applied to the capacitance, by convention, when the voltage is applied to the electrode which allows the low index liquid to be pushed (respectively high index)

The step of correcting the optical power E5 can then comprise a step of applying E52 of said capacitance variation value between the two electrodes, so as to cause a movement of the deformable part 470 of the membrane 400.

Thus and advantageously, the optical power correction step E5 allows both the correction made during this step to be synchronized at any time between the first lens 100a and the second lens 100b, and also allows the exchange of the set of data which includes the data measured by the first measuring system 47 and the second measuring system 57 respectively equipping the first branch 10 and the second branch 30. This is particularly advantageous for improving the correction of the pair of adaptive glasses 1 because the first measuring system 47 and the second measuring system 57 measure different data on the first branch 10 and on the second branch 30. Synergistically, the measurement of the first distance by the first measuring system 47 and of the second distance by the second measuring system 57 makes it possible to obtain measurement redundancy making this measurement more reliable.

Finally, the control method may include a step E6 of updating the correspondence table, in which the correspondence table is updated in order to provide a finer or more adapted correction to the pair of adaptive glasses 1.

The arrangements previously described make it possible to propose a control method for controlling a pair of adaptive glasses 1 in order to adapt the correction provided by the pair of adaptive glasses 1 in relation to a set of data received by the pair of adaptive glasses 1. such a process makes it possible in particular to correct presbyopia, or to coordinate the vision offered by virtual reality glasses. In the case of optical correction, the control method is advantageous in that it makes it possible to provide an optical correction by focusing which is carried out on the two ophthalmic lenses 100a, 100b, and in a coordinated manner.

Claims

1. Pair of adaptive glasses (1) including:

- a front face (3) comprising a first lens (100a) and a second lens (100b);

- a first branch (10) extending between a first free end portion (11) and a first connecting end portion (12), said first branch (10) cooperating with the front face (3) at the level of the first connection end portion (12);

- a second branch (30) distinct from the first branch (10) extending between a second free end portion (31) and a second connecting end portion (32), said second branch (30) cooperating with the front face (3) at the level of the second connecting end portion (32), on the side opposite the first branch (10) relative to the front face (3);

- a first electronic control device (40) comprising a first computer (41), a first battery (43), and a first wireless communication device (45);

- a second electronic control device (50) distinct from the first electronic control device (40) comprising a second computer (51), a second battery (53), and a second wireless communication unit (55); the first wireless communication member (45) and the second wireless communication member (55) being configured to exchange between them a set of data comprising at least one parameter chosen from: at least one distance between the pair of adaptive glasses ( 1) and an external object, a focusing distance, a user control of the pair of adaptive glasses (1), an optical power value of the first lens (100a), and an optical power value of the second lens (100b), the first electronic control device (40) and the second electronic control device (50) being further configured to vary respectively the optical power of the first lens (100a) and the optical power of the second lens (100b) based on said data set.

2. Pair of adaptive glasses (1) according to claim 1, in which the electronic control device (45, 55) is configured to vary the optical power of at least one lens chosen from the first lens (100a) and the second lens (100b) via a correction member (701) comprising liquid crystals, said correction member (701) being configured to allow the orientation of said liquid crystals by the application of an electric field in order to change the refractive index of said at least one lens. Pair of adaptive glasses (1) according to claim 1, in which at least one lens chosen from the first lens (100a) and the second lens (100b) comprises:

- a primary glass (120) comprising a first transparent material, and having a first primary surface (210) and a second primary surface (220), said primary glass (120) being configured to transmit light between the first primary surface ( 210) and the second primary surface (220);

- a secondary glass (160) comprising a second transparent material, and having a first secondary surface (610) and a second secondary surface (620), said secondary glass (160) being configured to transmit light between the first secondary surface ( 610) and the second secondary surface (620);

- a main chamber (140) delimiting a main volume between the second primary surface (220) and the first secondary surface (610); And

- a membrane (400) comprising a deformable part (470), said deformable part (470) being at least partially included in the main chamber (140), and completely separating the main chamber (140) into at least a first lens chamber (110) configured to comprise at least one primary fluid and a second lens chamber (115) configured to comprise at least one secondary fluid, the first lens chamber (110) being comprised between the second primary surface (220) and the portion deformable (470), and the second lens chamber (115) being included between the deformable part (470) and the first secondary surface (610). Pair of adaptive glasses (1) according to claim 3, wherein said at least one lens selected from the first lens (100a) and the second lens (100b) comprises a primary fluid passage (111) comprising a primary channel configured to transport the primary fluid and to unblock in the first lens chamber (110); and a secondary fluid passage (121) including a secondary channel configured to transport the secondary fluid and to open into the second lens chamber (115).

5. Pair of adaptive glasses (1) according to claim 4, in which the electronic control device (45, 55) is configured to vary the optical power of said at least one lens chosen from the first lens (100a) and the second lens (100b) via a fluid displacement member (700) configured:

- to allow movement of the primary fluid into or out of the first lens chamber (110) through the primary fluid passage (111); and or

- to allow movement of the secondary fluid into or out of the second lens chamber (115) through the secondary fluid passage (121).

6. Pair of adaptive glasses (1) according to any one of claims 1 to 5, comprising at least one measuring system (47, 57) configured to detect the presence of an external object, and to communicate to at least one electronic control device chosen from the first electronic control device (40) and control and the second electronic control device (50), a value of a distance separating said at least one measuring system (47, 57) and said external object.

7. Pair of adaptive glasses (1) according to claim 6, in which the at least one measuring system (47, 57) is arranged on at least one connection end portion chosen from the first end portion of connection (12) and the second connection end portion (32).

8. Pair of adaptive glasses (1) according to any one of claims 1 to 7, in which at least one portion of the first branch (10) is configured to pivot relative to the front face (3) via a first hinge (14), in which at least one portion of the second branch (30) is configured to pivot relative to the front face (3) via a second hinge (34), and in which the first wireless communication member (45), and the second wireless communication member (55) are electrically connected respectively to a first antenna (16) and to a second antenna (36), said first and second antennas (16 , 36) being configured for allow the exchange of the set of data between the first wireless communication unit (45) and the second wireless communication unit (55); the first antenna (16) being included in the first hinge (14), and the second antenna (36) being included in the second hinge (34).

9. Pair of adaptive glasses (1) according to claim 8, in which the first hinge (14) constitutes the first antenna (16), and/or in which the second hinge (34) constitutes the second antenna (36).

10. Pair of adaptive glasses (1) according to any one of claims 8 or 9, in which the first antenna (16) is arranged at the first connection end portion (12), and the second antenna ( 36) is arranged at the second connecting end portion (32).

11. Pair of adaptive glasses (1) according to any one of claims 1 to 10, in which at least one electronic control device chosen from the first electronic control device (40) and the second electronic control device (50) comprises a user interface configured to receive at least one command from the user of the pair of adaptive glasses (1), said at least one command being configured to be included in the data set.

12. Control method for controlling a pair of adaptive glasses (1) according to any one of claims 1 to 11, the control method comprising:

- a reception step (El) in which a set of data is received by at least one electronic control device chosen from the first electronic control device (40) and the second electronic control device (50), said set of data comprising at least one parameter chosen from: a distance between the pair of adaptive glasses (1) and an external object, a focusing distance, a command from a user of the pair of adaptive glasses (1), an optical power value of the first lens (100a), and an optical power value of the second lens (100b);

- an exchange step (E3), in which the set of data is exchanged by a wireless transmission technique between the first wireless communication unit (45) and the second wireless communication unit (55); - an optical power correction step (E5), in which the optical power of the first lens (100a) and the optical power of the second lens (100b) are corrected according to the set of data.

13. Control method according to claim 12, of a pair of adaptive glasses (1) according to claim 2, wherein during the optical power correction step (E5), the optical power of at least one lens chosen from the first lens (100a) and the second lens (100b) is corrected by the application of an electric field in order to change the refractive index of said at least one lens.

14. Control method according to claim 12, of a pair of adaptive glasses (1) according to any one of claims 3 to 5, in which during the optical power correction step (E5), the optical power of the at least one lens chosen from the first lens (100a) and the second lens (100b) is corrected by deforming the deformable part (470) of the membrane (400) in a corrected position, said corrected position corresponding to a deformation of the deformable part (470) so as to vary a volume of the first lens chamber (110), and a volume of the second lens chamber (115).

15. Control method according to any one of claims 12 to 14, in which the pair of adaptive glasses (1) comprises at least one measuring system (47, 57) configured to detect the presence of an external object, and in which the step of receiving (El) a set of data comprises:

- a measuring step (E10) in which a distance is measured between the measuring system (47, 57) and the external object, and

- a communication step (E13) in which said distance is communicated by the measuring system (47, 57) to at least at least one electronic control device chosen from the first electronic control device (40) and the second electronic device control (50), the data set then comprising said distance.

16. Control method according to any one of claims 12 to 15, further comprising a data encryption step (E2) implemented before the exchange step (E3), in which the set of data is encrypted, the exchange step (E3) then includes the exchange of all of encrypted data between the first wireless communication unit (45) and the second wireless communication unit (55).