METHOD FOR CONTROLLING AN OPHTALMIC SYSTEM USING INFORMATION OBTAINED FROM A MEASUREMENT AND WITH THE AID OF AN EXTERNAL ELECTRONIC DEVICE

Abstract

The invention relates to a method for controlling an ophthalmic system (1) comprising at least one optical element (2), at least one measuring sensor (5), at least one interface for communication (8) with a communicating external electronic device (9), and at least one processor (4) connected to the optical element (2) and used to control a variation of a functionality relating to the optical element (2), the method comprising the steps consisting in obtaining at least one measurement using the sensor (5) of the ophthalmic system (1), selecting at least one piece of information obtained by a communicating external electronic device (9), determining an instruction on the basis of the measurement acquired by the sensor (5) and the information obtained by the communicating external electronic device (9), and executing the instruction by means of the processor (4) in order to control the variation of the functionality relating to the optical element (2).

Description

Method for controlling an ophthalmic system based on a measurement and information obtained by an external electronic device The invention relates to an ophthalmic system comprising at least one optical element, such as a spectacle lens, in which the control of a variation in a function is improved. Ophthalmic systems are known, such as frames incorporating electrochromic lenses, whose transmission value can vary automatically according to the ambient light level in which the user is located. The electrochromic lens is electrically connected to a self-contained control processor and to one or more sensors adapted to measure luminous flux, the processor being adapted to control the transmission value of the variable-transmission lens according to the measured luminous flux. However, it is difficult to effectively control such an ophthalmic system based solely on the light flux measured by its sensors. Indeed, the sensors integrated into the frame do not necessarily provide sufficiently precise measurements, for example, when the sensors are poorly positioned relative to the light flux, which limits the performance of the lens transmission control. Furthermore, integrating a large number of sensors into a single ophthalmic system to ensure the reliability of the acquired measurements and optimize the control of the ophthalmic system can prove challenging. Finally, controlling the variation of an optical element's function may also depend on other data specific to the user of the ophthalmic system, such as their personal sensitivity to light or their activities (reading, sports, driving).The command may also depend on external information, for example geolocation or meteorological data (presence of a nearby light source, low sun, tunnel passage / exit, etc.), as well as information related to the user's immediate environment (presence of interlocutors or a large crowd, for example). The invention aims to resolve at least partially the disadvantages described above and, more particularly, aims to control the variation of a function of an optical element, without necessarily requiring the ophthalmic system to have a large number of sensors, in order to provide improved visual comfort to the user. Thus, the invention relates to a method for controlling an ophthalmic system comprising: at least one optical element, at least one measurement sensor, a communication interface with an external communicating electronic device, - at least one processor connected to the optical element and capable of controlling a variation of a function related to the optical element, the process comprising the steps of: acquire at least one measurement via the ophthalmic system sensor select at least one piece of information obtained by an external communicating electronic device, determine an instruction from the measurement acquired by the sensor and the information obtained by the external communicating electronic device, and execute the instruction by the processor to control the variation of the functionality related to the optical element. Selecting certain external information, combined with the measurement(s) acquired by the system's sensors, improves the relevance of the instruction used to control the variation in functionality related to the optical element. The user experience provided by the optical element is therefore significantly enhanced. According to one embodiment, the instruction is determined by the electronic device, the process further comprising the step of: transmit the instruction from the electronic device to the processor of the ophthalmic system before executing the instruction to control the variation of the functionality related to the optical element. According to one embodiment, the instruction determination is performed by the ophthalmic system processor, the process further comprising the step of: transmit the selected information from the electronic device to the ophthalmic system processor before determining the instruction from the measurement acquired by the sensor and the selected information. According to one embodiment, the determination of the instruction from the measurement acquired by the sensor and the information obtained by the electronic device is carried out from a predetermined model of the functionality of the optical element. In particular, after the control of the variation in functionality related to the optical element, the process further includes the steps of: modify the functionality of the ophthalmic system via a human-machine interface, and adapt the functionality model of the optical element according to the modification of the functionality made from the human-machine interface. According to one implementation, the selected information is associated with a location and / or a period of time corresponding to that(s) of the measurement acquired by the sensor. According to one embodiment, the measurement acquired by the sensor includes at least one element from among: a local measure; a geolocation measure; an acceleration measure; a gyroscopic measurement; a pressure measurement; a temperature measurement; a measure of tracking the movement of at least one eye; a telemetry measurement; energy collection, including mechanical, electrical or thermal energy; an audio signal; a video signal; a measurement of light intensity, in at least one frequency band of the electromagnetic spectrum. According to one embodiment, the electronic device is a mobile phone, a digital tablet, a smartwatch, a desktop computer, a laptop, a remote server accessible for example via the internet, a device integrated into a motor vehicle or into a GPS, an item of clothing, a pair of shoes, a mask, a connected accessory or into a GPS, or a pair of glasses with connected lenses. According to one embodiment, the information obtained by the electronic device includes at least one element or a combination of elements from among: - weather information; - geolocation information; - time-stamped information; - Information relating to the user's environment of the ophthalmic system. - Information relating to a previously acquired sensor measurement and / or a previously commanded function variation value of the ophthalmic system. According to one implementation, a plurality of information is selected from a plurality of external electronic devices adapted to communicate with the communication interface of the ophthalmic system. According to one embodiment, the optical element is an electroactive type ophthalmic lens, and in which the variation of the functionality related to the lens involves a modification of at least one characteristic of an electroactive cell included in the lens. In particular, the optical element is an electrochromic glass, and the functionality associated with the optical element includes the transmission of the glass. According to one embodiment, the process further comprises the steps of: to time-stamp the measurement acquired by the sensor and the information obtained by the electronic device, and store the measurement and / or time-stamped information in a memory of the electronic device or in an external database, the database being adapted to communicate with the electronic device via a data network. According to one implementation, the process also includes the following steps: to geolocate the measurement acquired by the sensor and the information obtained by the electronic device, and store the measurement and / or geolocated information in a memory of the electronic device or in an external database, the database being adapted to communicate with the electronic device via a data network. The invention also relates to a computer program comprising instructions for implementing the method according to the invention, when the computer program is executed by a processor. The invention also relates to an assembly comprising: an ophthalmic system comprising: • at least one optical element, • at least one measurement sensor, • a communication interface with an external communicating electronic device, and • a processor connected to the optical element and capable of controlling a variation of a function related to the optical element, an electronic device suitable for performing the following operations: • receive a measurement acquired by the sensor; • select at least one piece of information; • determine, from the measurement acquired by the sensor and the information, an instruction to the processor to control the variation of the functionality related to the optical element. The invention is now described using drawings, in which: Figure 1 is a schematic representation of an assembly comprising an ophthalmic system and an electronic device according to a first embodiment; Figure 2 is a schematic representation of the ophthalmic system of Figure 1; Figure 3 is a schematic representation of an assembly comprising an ophthalmic system and a plurality of electronic devices according to a second embodiment; and Figure 4 is a schematic representation of an assembly comprising a plurality of optical systems and a plurality of electronic devices according to a third embodiment. It should be noted that in the figures, structural and / or functional elements common to the different embodiments may have the same reference numerals. Thus, unless otherwise stated, such elements have structural, dimensional, and material properties. identical. For the sake of clarity, only the elements useful for understanding the described implementation methods have been represented and will be detailed. Figure 1 is a schematic view of an assembly comprising an ophthalmic system 1 and an external communicating electronic device 9. By "external," it is understood that the electronic device 9 is separate from, or external to, the ophthalmic system 1. The ophthalmic system 1 comprises at least one optical element 2. In particular, as shown in Figure 1, the system 1 comprises a frame 3, having, notably, two arms 3a, 3b. According to the embodiment in Figure 1, the ophthalmic system 1 comprises two optical elements 2a, 2b mounted in the frame 3. The invention is described hereafter with respect to a single optical element 2. However, it is understood that the invention can also be applied to an ophthalmic system 1 comprising several optical elements 2, as illustrated in Figure 1. An optical element 2 can be any optical device intended to be placed in, on, near, substantially opposite, or upstream of a visual organ, such as an eye, in the direction of a ray of light generated by a light source. In particular, optical element 2 is an ophthalmic lens mounted on the ophthalmic system 1, such as a pair of eyeglasses, intended for a human being. Such an optical element 2 may or may not have a corrective effect. For example, optical element 2 may be opacifying (sunglasses) or informative (information display). Optical element 2 has variable functionality. According to one embodiment, the optical element 2 is an electroactive type glass. In this embodiment, the variation in functionality related to the glass involves a modification of at least one characteristic of an electroactive cell included in the glass. The term "electroactive glass" refers to an optical device in which at least one characteristic changes under the influence of an electrical and / or electromagnetic signal. Typically, this involves a change in the amplitude of an electrical signal applied to the electroactive glass. modifies a function of this glass. In one embodiment, the optical element 2 may be a variable-amplitude lens, for example, electrically controlled transmission, a color-changing lens (for example, using liquid crystals), and / or an actively polarized lens. More specifically, the optical element 2 may be an electrochromic lens, in which the functionality associated with the optical element 2 includes the lens's transmission. This functionality may, for example, relate to switching on / off, the transmission level, the minimum / maximum transmission ranges, the number and value of transmission steps when transmission steps are used, and / or the speed of transition between two transmission steps of the optical element 2. However, the invention is not limited to electrochromic glass and may also relate to other types of electroactive glass, such as liquid crystal display (LCD) glass, for example. In another embodiment, optical element 2 is an informative glass, comprising, for example, a passive glass combined with a holographic mirror. Varying the functionality of this optical element 2 allows information to be displayed on the glass for the user. More generally, optical element 2 can be any active device comprising a variation of a functionality. As schematically illustrated in Figure 2, the ophthalmic system 1 includes a processor 4 connected to the optical element 2 and capable of controlling the variation of the functionality linked to the optical element 2. The ophthalmic system 1 also includes a sensor 5, located on the frame 3 or directly at the level of an optical element 2. The sensor 5 is for example located at the level of the nasal bridge of the frame 3 as illustrated in figure 1. Sensor 5 can be an illuminance sensor, such as a photodiode, or a micro-illuminance sensor (also called an ALS for "Ambient Light Sensor"). Sensor 5 can thus measure illuminance as the luminous flux received per unit area (in lux or Wm²). "2 Alternatively, sensor 5 can also The sensor 5 can measure other luminous flux values, such as intensity, or visual or photometric luminance. For example, sensor 5 can measure luminous flux in the visible and / or ultraviolet range. Sensor 5 can also be adapted to measure the degree of polarization of light, particularly to enable a polarization cutoff function. Sensor 5 can also be adapted to measure the visible and / or non-visible light spectrum to enable a wavelength-selective cutoff function. Sensor 5 is thus suitable for measuring the ambient luminous flux reaching the ophthalmic system 1. "Ambient" refers to the luminous flux surrounding the ophthalmic system 1.The ambient luminous flux therefore varies according to conditions external to the ophthalmic system 1, such as weather conditions when the ophthalmic system 1 is outdoors, or the lighting of a room when the ophthalmic system 1 is indoors, for example. The measuring sensor 5 can also measure a parameter other than luminous flux, and can therefore be: a proximity sensor operating for example via a measurement of the emission / reception time of an electromagnetic wave. The proximity measurement can be made between the ophthalmic system 1 and its user, between the ophthalmic system 1 and an external electronic device, between the ophthalmic system 1 and another ophthalmic system, etc.; a sensor for a location measurement, for example geolocation. The geolocation measurement can correspond to at least one element among a geographical location (for example via a latitude and longitude), a position in space (for example in a Galilean frame of reference), a proximity measurement relative to another object, a proximity or presence measurement at a particular site (cinema, restaurant, tourist site, etc.). Such a sensor is typically a GPS device (for "global positioning system"); an inclinometer for acquiring an inclination measurement, allowing for example to determine the measurement of the user of the ophthalmic system 1; a gyroscope for acquiring a gyroscopic measurement; - a rangefinder for acquiring a distance measurement; a pressure gauge for acquiring a pressure measurement; a thermometer for acquiring a temperature measurement; an "eye tracker" device (for eye movement tracking device in French) capable of acquiring a measurement of the tracking of a movement of at least one eye of the user of the ophthalmic system 1; a microphone for acquiring a sound signal; a camera for acquiring a video signal, for example a plenoptic camera; a sensor for measuring light intensity, in at least one frequency band of the electromagnetic spectrum; - a collection device capable of collecting electrical energy, for example acquired via a solar sensor (photovoltaic cell) or a sensor of mechanical energy (vibration sensor, for example on a face), thermal energy, etc. The ophthalmic system 1 may further comprise a plurality of sensors 5, in particular two sensors 5, measuring the same value or different values. The following description relates the invention to a single sensor 5. However, it is understood that the invention may also be applied to an ophthalmic system 1 comprising a plurality of sensors 5. The ophthalmic system 1 may include other elements, such as a battery 6 to power the electronic components of the ophthalmic system 1. The ophthalmic system 1 may also include a memory 7 suitable for storing parameters or data related to the functionality of the optical element 2. The fact that this data is stored directly on a memory 7 of the ophthalmic system 1 prevents it from being lost, for example, if this data were stored on another electronic device. The ophthalmic system 1 also includes a communication interface 8. The communication interface 8 is connected (for example via a wired or wireless link) to the optical element 2. The communication interface 8 is adapted to transmit / receive data between the ophthalmic system 1 and the electronic device 9. The electronic device 9 can be a mobile phone, a digital tablet, a smartwatch, a desktop or laptop computer, a remote server accessible for example via the internet, a terminal integrated into a motor vehicle or GPS, a dedicated terminal used for the manufacture and / or configuration of ophthalmic lenses, a Clothing, a pair of shoes, a mask, a connected accessory, or a GPS device. Generally, the electronic device 9 can be any electronic device capable of being connected to the ophthalmic system 1. The electronic device 9 may also include a sensor as described above for the ophthalmic system 1 with reference 5. In particular, the electronic device 9 may also be another ophthalmic system as described above, for example, a pair of glasses. The connection between the electronic device 9 and the ophthalmic system 1 may be wired, wireless, optical, inductive, etc. More specifically, the ophthalmic system 1 can be connected to the electronic device 9 via a communication network C. Thus, for a short-range radio link (typically less than 100 meters), the communication network C can be Bluetooth (trademarked) or ZigBee (trademarked) for very low-bandwidth applications. The communication network C can also be Wi-Fi for high-speed applications or a home automation network. For a long-range radio link (typically greater than one kilometer), the communication network C can be ZigFox (trademarked), LoRa (trademarked) based on the LoRaWAN protocol (for "Long Range Wide-area network"), GSM (for "Global System for Mobile Communication"), 3G, or 4G. For a short-range optical link (typically capable of covering the interior of a room), the communication network C can be a LiFi network (trademarked) or a Q1 network for a very short-range magnetic induction link. Other protocols can be used, such as, for example, an IP network, Ethernet, TCP / UDP, the Internet, a network using a universal asynchronous transmitter-receiver, for example, of the UART type (Universal Asynchronous Receiver Transmitter), a network based on the HTTP protocol (Hyper Text Transfer Protocol), etc. The electronic device 9 can also be connected to a data network D. "Data network" means any type of network capable of providing complementary data to the data of the communication network C. In one embodiment, the data network D is distinct from the communication network C. In particular, when the communication network C is a local network (for example Bluetooth), the data network D can, for example, be a wide area network (for example Internet via a 4G connection). The following is described the method for controlling the variation of the functionality linked to an optical element 2 according to a first embodiment of the invention illustrated by figure 1. According to this first embodiment, a single user of an ophthalmic system 1 is considered, for example a wearer of a pair of glasses. In the first step of the process, called the measurement acquisition step, a measurement is acquired by the sensor 5 of the ophthalmic system 1. In the second step of the process, the acquired measurement is transmitted to an external communicating electronic device 9. The measurement is transmitted, in particular, via the communication interface 8 of the ophthalmic system 1 to the electronic device 9 through the communication network C. During this second step, other data related to the optical element 2 can also be transmitted, which may be used to determine the instruction for controlling the variation of the functionality. This data may concern the user profile, including, for example, their preferences regarding light sensitivity.This data may also relate to usage data of the ophthalmic system 1, such as the number of operating hours, current consumption, statistics on transmission levels used, statistics on transmission change dynamics, battery level 6, etc. This data transmitted by the ophthalmic system 1 to the electronic device 9 is subsequently referred to as internal data. In a third step, called the acquisition step, the electronic device 9 obtains, in addition to the internal data, one or more pieces of information. The information obtained may be data previously stored on a memory (not shown) of the electronic device 9 or measured by a sensor of the electronic device 9, as applicable. The information may also be previously stored on a database 10 and transmitted to the electronic device 9 by a server 1 1 via the data network D. Thus, the information obtained by the electronic device 9 is described as external, as opposed to internal data from the user's ophthalmic system 1. The external information obtained by the electronic device 9 includes at least one element or combination of elements from: - meteorological information (e.g., local data on pressure, humidity, temperature, sunshine, wind speed, rainfall / snowfall, etc.); - geolocation information, allowing in particular to determine an activity of the user of the ophthalmic system 1 (if the user is in a restaurant or at the cinema for example); - time-stamped information; - information relating to the user's environment of the ophthalmic system 1, for example, regarding the presence of an obstacle, a particular place (such as a tunnel), or other people in the vicinity of the user of the ophthalmic system 1; and / or - information relating to a previously acquired sensor measurement and / or a previously ordered function variation value of the ophthalmic system 1. In a fourth step of the process, called the selection or aggregation step, at least one piece of information obtained by the electronic device 9 is selected. In particular, the selected information preferably corresponds to a location and / or a time period matching that(s) of the measurement acquired by the sensor 5 of the ophthalmic system 1. It is thus possible to associate internal data transmitted by the ophthalmic system 1 with external information corresponding to identical or similar time / location measurements. It is also possible to select several pieces of information if necessary. In a fifth step, at least one instruction is determined from the measurement acquired by the sensor and the selected information. According to one embodiment, the instruction determination is performed by the processor 4 of the ophthalmic system 1. According to this embodiment, the information is transmitted beforehand The selected instruction is sent from the electronic device 9 to the processor 4 of the ophthalmic system 1 before determining the instruction based on the measurement acquired by the sensor 5 and the selected information. According to another preferred embodiment, the instruction determination is performed by a processor (not shown) of the electronic device 9. Indeed, the electronic device 9 is likely to have greater computing power than the ophthalmic system 1, and therefore to determine the instruction for controlling the variation in the functionality of the optical element 2 more quickly. This also makes it possible to limit the consumption of energy stored by the battery 6 of the ophthalmic system 1, and thus increase the operating time of the ophthalmic system 1. In one embodiment, the instruction is determined from the measurement acquired by sensor 5 and the selected information using a predetermined model of the functionality of the optical element 2. The functionality model can be of any type, including fuzzy logic or modal logic. The functionality model thus includes, at least as input data, the value of the measurement acquired by sensor 5 and the selected information. The model can also take into account other input parameters, such as other internal data concerning the ophthalmic system 1 or the user. As a purely illustrative example, the model may stipulate that, when the user is located in a particular place, for example at their work desk, the optical element 2 must allow all light to pass through regardless of the luminous flux measured by a sensor 5 of the ophthalmic system 1. The model then determines an instruction to this effect to be transmitted to the optical element 2. In another example, the model may anticipate that, when the user is driving (electronic device 9 being, for example, the car's on-board computer), optical element 2 must be constantly opaque so that the user has better visibility throughout their journey. The model then determines an instruction to command a constant reduced transmission value for optical element 2 as long as the information obtained by electronic device 9 indicates that the user is in the car or driving it. In yet another example, the model may anticipate decreasing the transmission of the element optical 2 of the user when the user is in the presence of interlocutors. The model then determines a reduced transmission level based on the light intensity in which the user is located, measured by sensor 5, and based on information obtained by the electronic device 9 indicating the presence of other people around the user. In a sixth step, the instruction is transmitted to the processor 4 of the ophthalmic system 1, notably via the communication interface 8 of the ophthalmic system 1 where applicable. Finally, in a seventh step, the processor 4 of the ophthalmic system 1 executes the instruction to control the variation of the functionality related to the optical element 2. Thus, the functionality of the optical element 2 can be controlled automatically. By "automatically," we mean that there is no need for physical interaction with the user of the ophthalmic system in order to control the functionality of the optical element 2. In particular, the ophthalmic system 1 preferably does not include any means of interaction with the user of the ophthalmic system 1, for example, a touch interface or a button. However, in an optional eighth step, if the user is not satisfied with the variation in the functionality of the optical element 2, they can modify the functionality of the ophthalmic system via a human-machine interface. According to this eighth step, the model can be adapted through learning based on the user's modification of the functionality. The functionality model of the optical element can thus be modified and progressively optimized to achieve greater comfort and a preferred control setting for the user of the ophthalmic system 1. According to one embodiment, all the data necessary for modifying the functionality, as well as the control model, can be stored in memory 7 of the ophthalmic system 1. Thus, the ophthalmic system 1 can allow access to this data from a human-machine interface of an electronic device. Access to the human-machine interface from the electronic device can also be used to perform updates, troubleshoot the ophthalmic system 1, save a user profile, etc. Once transmitted to the electronic device 9, the internal data, including the measurement from sensor 5, and the external information obtained by the electronic device can be time-stamped and then stored in a memory (not shown) of the electronic device 9. Alternatively, internal data and external information are stored in an external database 10, the database 10 being adapted to communicate with the electronic device 9 via the data network D. Similarly, internal data transmitted by the ophthalmic system, and in particular the measurement from sensor 5, and external information obtained by the electronic device 9 can be geolocated and then stored in a memory of the electronic device 9 or in the database D. This previously acquired internal and external data concerning the usage history of the ophthalmic system 1 can thus be reused subsequently. In particular, it can be used to retain certain data concerning the user, for example, the weather history in the user's area, the user's activities, their past location, etc. It is also possible to track the history of certain data concerning optical element 2, for example the on / off rate of optical element 2, its transmission or images displayed to know if the user is in reading phase. Thus, the internal data and external information previously acquired and stored can be used to improve user comfort, to enable monitoring of user-related information (e.g., UV exposure levels or consumption of the ophthalmic system 1), and to monitor potential malfunctions of the ophthalmic system 1 (consumption of the ophthalmic system 1, difficulties in achieving the desired functionality of the optical element 2, etc.). Due to the transmission of this internal data and external information, the monitoring and / or control of the ophthalmic system 1 can be performed remotely. The method is described below according to a second and a third embodiment of the invention, illustrated respectively by Figures 3 and 4. According to the second embodiment, an assembly comprises an ophthalmic system 1 and a plurality of external communicating electronic devices 9a, 9b, 9c. According to this second embodiment, the ophthalmic system can transmit and / or receive information external information from the various electronic devices 9a, 9b, 9c. For example, each electronic device 9a, 9b, 9c can transmit, via the same communication network C or several different networks Ca, Cb, Ce, external information necessary to determine the control instruction for the functionality linked to the optical element 2. According to the third embodiment, an assembly comprises a plurality of ophthalmic systems 1a, 1b, 1c and a plurality of external communicating electronic devices 9a, 9b, 9c. According to this third embodiment, the ophthalmic system 1a can transmit and / or receive external information from the various electronic devices 9a, 9b, 9c as well as from the other ophthalmic systems 1b, 1c. Thus, users of other ophthalmic systems can transmit data enabling the control of the variation of functionality related to optical element 2. For example, a group of carriers distributed across a geographical area can independently measure ambient light data. Based on these measurements and geographical and meteorological information obtained by electronic devices 9a, 9b, and 9c, it may be possible to anticipate an imminent change in light levels for the user, such as the passage of a group of clouds, which has already been measured by other carriers. Similarly, it may be possible to anticipate the presence of an upcoming obstacle, such as a tunnel. Obviously, the invention is not limited to the embodiments described above and provided solely by way of example. It encompasses various modifications, alternative forms, and other variations that a person skilled in the art might consider within the scope of the present invention, and in particular all combinations of the different modes of operation described above, which may be taken separately or in combination.

Claims

Demands Method for controlling an ophthalmic system (1) comprising: at least one optical element (2), at least one measuring sensor (5), at least one communication interface (8) with an external communicating electronic device (9), at least one processor (4) connected to the optical element (2) and capable of controlling a variation of a functionality linked to the optical element (2), the process comprising the steps of: acquire at least one measurement by the sensor (5) of the ophthalmic system (1), select at least one piece of information obtained by an external communicating electronic device (9), determine an instruction from the measurement acquired by the sensor (5) and the information obtained by the external communicating electronic device (9), and execute the instruction by the processor (4) to control the variation of the functionality related to the optical element (2). Method according to claim 1, wherein the determination of the instruction is carried out by the electronic device (9), the method further comprising the step of: - transmitting the instruction from the electronic device (9) to the processor (4) of the ophthalmic system (1) before executing the instruction to control the variation of the functionality related to the optical element (2). A method according to claim 1, wherein the instruction determination is performed by the processor (4) of the ophthalmic system (1), the method further comprising the step of: transmit the selected information from the electronic device (9) to the processor (4) of the ophthalmic system (1) before determining the instruction from the measurement acquired by the sensor (5) and the selected information. A method according to any one of the preceding claims, wherein the determination of the instruction from the measurement acquired by the sensor (5) and the information obtained by the electronic device (9) is carried out from a predetermined model of the functionality of the optical element (2). A method according to claim 4, wherein, after controlling the variation in functionality related to the optical element (2), the method further comprises the steps of: modifying the variation in functionality of the ophthalmic system (1) from a human-machine interface, and adapt the functionality model of the optical element (2) according to the modification of the functionality carried out from the human-machine interface. A method according to any one of the preceding claims, wherein the selected information is associated with a location and / or a period of time corresponding to that(s) of the measurement acquired by the sensor (5). A method according to any one of the preceding claims, wherein the measurement acquired by the sensor (5) comprises at least one element from: a local measure; a geolocation measure; an acceleration measure; a gyroscopic measurement; a pressure measurement; a temperature measurement; a measure of tracking the movement of at least one eye; a telemetry measurement; energy collection, in particular electrical, mechanical or thermal energy; an audio signal; a video signal; a measurement of light intensity in at least one frequency band of the electromagnetic spectrum. A method according to any one of the preceding claims, wherein the electronic device (9) is a mobile phone, a digital tablet, a smartwatch, a desktop computer, a laptop computer, a remote server accessible via the internet, a device integrated into a motor vehicle, a garment, a pair of shoes, a mask, an accessory or a pair of glasses having connected lenses.

9. A method according to any one of the preceding claims, wherein the information obtained by the electronic device (9) comprises at least one element or combination of elements from: - weather information; - geolocation information; - time-stamped information; - information relating to the user's environment of the ophthalmic system (1); - information relating to a previously acquired sensor measurement (5) and / or a previously ordered function variation value of the ophthalmic system (1).

10. A method according to any one of the preceding claims, wherein a plurality of information is selected from a plurality of external electronic devices (9a, 9b, 9c) adapted to communicate with the communication interface (8) of the ophthalmic system (1). 1 1. A method according to any one of the preceding claims, wherein the optical element (2) is an electroactive type ophthalmic lens, wherein the variation in functionality related to the lens involves a modification of at least one characteristic of an electroactive cell included in the lens.

12. Method according to claim 1 1 , wherein the optical element (2) is an electrochromic glass, wherein the functionality related to the optical element includes the transmission of the glass.

13. A method according to any one of the preceding claims, further comprising the steps of: - to time-stamp the measurement acquired by the sensor (5) and the information obtained by the electronic device (9), and store the measurement and / or time-stamped information in a memory of the electronic device (9) or in an external database (10), the database (10) being adapted to communicate with the electronic device (9) via a data network (D).

14. A method according to any one of the preceding claims, further comprising the steps of: to geolocate the measurement acquired by the sensor (5) and the information obtained by the electronic device (9), and store the measurement and / or geolocated information in a memory of the electronic device (9) or in an external database (10), the database (10) being adapted to communicate with the electronic device (9) via a data network (D).

15. A computer program comprising instructions for implementing the method according to any one of the preceding claims, when the computer program is executed by a processor.

16. An assembly comprising: an ophthalmic system (1) comprising: • at least one optical element (2), • at least one measuring sensor (5), • at least one communication interface (8) with an external communicating electronic device (9), and • at least one processor (4) connected to the optical element (2) and capable of controlling a variation of a function linked to the optical element (2), an external communicating electronic device (9) adapted to perform the following operations: · receive a measurement acquired by the sensor (5); • select at least one piece of information; • determine, from the measurement acquired by the sensor (5) and the information, an instruction to the processor (4) to control the variation of the functionality linked to the optical element (2).