Patent Publication Number: US-2020286604-A1

Title: Method for generating a database

Description:
TECHNICAL FIELD 
     The present invention relates to a method for generating a database to be used to set illumination of an adjustable light source. A light control system is further provided. 
     BACKGROUND OF THE INVENTION 
     It has become known that many humans or animals have different lighting needs, that is they are affected by the light in their environment in different ways and therefore have different needs when it comes to the surrounding light. Some of these needs stem from physical conditions, for example, eye problems, some stem from mental conditions, for example, winter depressions and some stem from individual preference. 
     To this end, the health condition and/or behavior of a human and/or an animal is influenced by the light it is exposed to, i.e. light intensity and/or spectral content of the light. As an example, the blue component of the light in the morning stimulating alertness. In the evening, the natural light turns redder which improves relaxation. More specifically, it is known that the blue light in the morning increases cortisol and reduces melatonin increasing attentiveness and focus, while the warmer red tone increases the body&#39;s melatonin and reduces cortisol causing the relaxation. 
     There is therefore is a need for efficient methods and systems for providing light exposure which is adapted to the needs of individuals. 
     SUMMARY OF THE INVENTION 
     In view of the above, it is an object of the present invention to provide a method for generating a database to be used to set illumination of an adjustable light source. It is further an object to mitigate, alleviate or eliminate one or more of the above-identified deficiencies in the art and disadvantages singly or in any combination and solve at least the above mentioned problem. 
     According to a first aspect: a method for generating a database to be used to set illumination of an adjustable light source is provided. The method comprising: for a plurality of different users: identifying an individual user; setting a specific light profile of the adjustable light source, the specific light profile comprising information pertaining to a spectral content and/or intensity of light by which the individual user is exposed to; while exposing the individual user for the specific light profile, sensing data pertaining to a health condition and/or a behavior of the individual user; determining a data set linking the specific light profile, genomic data pertaining to the individual user, and the data pertaining to the health condition and/or the behavior of the individual user sensed while exposing the individual user to the specific light profile; and storing the linked data set in a database. 
     The database links light exposure from the adjustable light source, i.e. the spectral content and/or intensity of light exposure, of an individual user with the health condition and/or the behavior of the individual user as well as the genomic data of the individual user. The database is therefore obtained which allows for matching of a specific light exposure, genomic data and a health condition and/or a behavior of an individual user. 
     As an example, the linked data, e.g. stored as entries in the database allows for correlation of a given health condition, a specific light exposure to a specific genomic data. The database thereby provides light recipes, i.e. directives, for achieving a given health condition and/or a behavior of an individual user having a given genomic data. The database may therefore be used to set a suitable light exposure for a new user provided that the genomic data of the new user matches or at least partly matches genomic data stored of the database. As a result, a biocentric light exposure may be obtained in that the light exposure takes account of the individual genomic data and preference of the individual user. A better specificity in the light exposure may thereby be obtained. An improved starting point for achieving a desirable health condition and/or behavior of an individual user is further provided by the database providing information pertaining to the light exposure to be used to induce the desirable health condition and/or behavior. 
     The wording “genomic data” may be construed as data pertaining to the genome or at least a portion of the genome of an individual user. The genome may be understood as the genetic material of an organism such as a human, an animal or a plant. The genome comprises DNA. The genome is the total genetic material of an organism and includes both the genes and non-coding sequences. The genome further comprises genetic material of the mitochondria and chloroplasts. To this end, genomics aims at the collective characterization and quantification of genes, which direct the production of proteins with the assistance of enzymes and messenger molecules. Genomics further involves the sequencing and analysis of genomes. 
     The genomic data may comprise the genome of an individual. 
     The genomic data may comprise at least a portion of the genome of an individual user. 
     The wording “health condition” may relate to both physical health and mental health. An example of a mental health condition that is influenced by light is winter/darkness depressions which are often treated with light therapy. An example of physical health condition is eye problems which may render a user&#39;s eyes very sensitive to certain amounts of light. 
     The wording “behavior of an individual user” may be understood as the response of an individual such as a human or an animal to internal and external stimuli. The wording “behavior of an individual user” may be understood as the physical state and/or motion associated with the individual user. The “behavior of an individual user” may be an observable emotional state. The observable emotion may, for example, be a facial expression, a body posture or a movement pattern. 
     The wording “light profile” may be construed as the spectral content and/or intensity of light. The spectral content may further be construed as a measure of the amount of electromagnetic radiation emitted at different wavelengths. In other words, the spectral content may be referred to as the spectrum of the light. The spectral content of light or its spectrum may be determined by a spectrograph dispersing the light from a light source into its component wavelengths so that it can be recorded then analyzed. 
     The determining of the data set linking the specific light profile, genomic data pertaining to the individual user, and the data pertaining to the health condition and/or the behavior of the individual user sensed while exposing the individual user to the specific light profile may further comprise determining a point in time at which the individual user is exposed to the specific light profile. 
     An advantage being that the time the exposure took place may be determined. The point in time may further be correlated to the light exposure and stored in the database. 
     The determining of the data set linking the specific light profile, genomic data pertaining to the individual user, and the data pertaining to the health condition and/or the behavior of the individual user sensed while exposing the individual user to the specific light profile may further comprise determining a time of exposure during which the individual user is exposed to the specific light profile. 
     An advantage being that the dosage of the exposure may be determined. The time of exposure may further be stored in the database. 
     The method may further comprise, for a specific individual user: 
     exposing the specific individual user for different specific light profiles; 
     sensing data pertaining to a health condition and/or a behavior of the specific individual user for each different specific light profile; and 
     linking each different specific light profile, genomic data pertaining to the specific individual user, and the data pertaining to the health condition and/or the behavior of the specific individual user sensed while exposing the specific individual user for each different specific light profile. 
     The database may thereby be built up faster. A better correlation of the genomic data pertaining to an individual user to the different specific light exposures, and the associated health condition and/or a behavior of an individual user may further be obtained. 
     The wording “specific individual user” may be understood as a user selected among a plurality of different users. 
     Linking each different specific light profile, genomic data pertaining to the specific individual user, and the data pertaining to the health condition and/or the behavior of the specific individual user sensed while exposing the specific individual user for each different specific light profile may further comprise points in time at which the individual user is respectively exposed to each different specific light profile. 
     Linking each different specific light profile, genomic data pertaining to the specific individual user, and the data pertaining to the health condition and/or the behavior of the specific individual user sensed while exposing the specific individual user for each different specific light profile may further comprise times of exposure during which the individual user is respectively exposed to each different specific light profile. 
     A specific light profile may be selected from a set of predetermined specific light profiles. Light profiles known to influence the health condition and/or behavior of an individual may thereby be used. 
     Known light profiles may thereby be used for building up the database. 
     The act of sensing may comprise one or more of: pulse, heart rate variability, blood pressure, sleep pattern, eating habits, facial expression, oxygen level, body posture, tone of voice, hormone levels, movement pattern, and productivity. 
     According to a second aspect a light control system is provided. The light control system comprising: an adjustable light source, adjustable in spectral content and/or intensity of light emitted; a first sensor configured to identify an individual user among a plurality of individual users; a central control engine configured to set a specific light profile of the adjustable light source, the specific light profile comprising information pertaining to a spectral content and/or intensity of light by which the individual user is exposed to; a second sensor configured to sense data pertaining to a health condition and/or a behavior of the individual user while exposing the individual user to the specific light profile; a first database comprising genomic data pertaining to each of the plurality of individual users; and wherein the central control engine is further configured to: determine a data set linking the specific light profile, genomic data pertaining to the individual user, and the data pertaining to the health condition and/or the behavior of the individual user sensed by the second sensor; and store the linked data set in a second database. 
     The light control system allows for building up of a data base for providing customized light to individuals. 
     The first sensor and second sensor may be the same sensor. 
     The first sensor may be a camera. 
     The second sensor may be configured to sense pulse, heart rate variability, blood pressure, sleep pattern, eating habits, facial expression, oxygen level, body posture, tone of voice, hormone levels, movement pattern, and/or productivity. 
     The central control engine may further be configured to determine a point in time at which the individual user is exposed to the specific light profile. 
     The central control engine may further be configured to determine a time of exposure during which the individual user is exposed to the specific light profile. 
     The first database and the second database may be the same database. 
     The above mentioned features of the first aspect, when applicable, apply to this second aspect as well. In order to avoid undue repetition, reference is made to the above. 
     A further scope of applicability of the present invention will become apparent from the detailed description given below. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the scope of the invention will become apparent to those skilled in the art from this detailed description. 
     Hence, it is to be understood that this invention is not limited to the particular component parts of the device described or steps of the methods described as such device and method may vary. It is also to be understood that the terminology used herein is for purpose of describing particular embodiments only, and is not intended to be limiting. It must be noted that, as used in the specification and the appended claim, the articles “a,” “an,” “the,” and “said” are intended to mean that there are one or more of the elements unless the context clearly dictates otherwise. Thus, for example, reference to “a unit” or “the unit” may include several devices, and the like. Furthermore, the words “comprising”, “including”, “containing” and similar wordings do not exclude other elements or steps. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects of the present invention will now be described in more detail, with reference to appended drawings showing embodiments of the invention. The figures should not be considered limiting the invention to the specific embodiment; instead they are used for explaining and understanding the invention. 
       As illustrated in the figures, the sizes of layers and regions are exaggerated for illustrative purposes and, thus, are provided to illustrate the general structures of embodiments of the present invention. Like reference numerals refer to like elements throughout. 
         FIG. 1  is a schematic view of a space and a light control system. 
         FIG. 2  illustrates components of the light control system of  FIG. 1 . 
         FIG. 3  is a block scheme of a method for generating a database to be used to set illumination of an adjustable light source. 
         FIG. 4 a    is a schematic view of a space and a light control system wherein an individual user is exposed to light having a specific light profile. 
         FIG. 4 b    is a schematic view of the space and the light control system of  FIG. 4 a   , wherein the individual user is exposed to light having a specific light profile being different to the specific light profile of  FIG. 4   a.    
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and to fully convey the scope of the invention to the skilled person. 
     In the following a method for generating a database to be used to set illumination of an adjustable light source and a light control system are described in relation to  FIGS. 1 and 2 . 
       FIG. 1  is a schematic view of a space  100  and a light control system  200 , see also  FIG. 2  illustrating components of the light control system  200 . 
     The light control system  200  comprises an adjustable light source  102 , a first sensor  104 , a second sensor  106 , a central control engine  108 , a first database  109   a  and a second database  109   b.    
     The adjustable light source  102 , the first sensor  104 , the second sensor  106 , and the central control engine  108  may be configured to communicate via wired or wireless communication in a communication network. 
     The central control engine  108  is illustrated to be comprised in the first sensor  104 , but may be arranged as a separate unit. 
     The central control engine  108  may be arranged within the adjustable light source  102 . 
     In other words, the central control engine  108  may be physically separate from the first sensor  104 . 
     The central control engine  108  may form or be implemented in a separate unit in the space  100 . 
     The central control engine  108  may alternatively be implemented on a remote server or on a central server or as part of a cloud service. 
     The central control engine  108  and the first sensor  104  may communicate with each other over a wired or wireless communication network. The central control engine  108  may be comprised in a single device. Alternatively, the central control engine  108  may be distributed over a plurality of devices. 
     The adjustable light source  102  is adjustable in spectral content and/or intensity of light emitted. An individual user  110  may be exposed  112  to the light emitted by the adjustable light source  102 . 
     The first sensor  104  is configured to identify the individual user  110  among a plurality of individual users. 
     The first sensor  104  may be a digital camera. The digital camera may be arranged to identify the individual user  110  by capturing a single or a plurality of images. Image recognition may further be used to identify the individual user  110 . The camera and/or the central control engine may be configured to perform the identification on an image or images captured by the digital camera. The image or images may be stored in a memory of the first sensor and/or of the central control engine. 
     The central control engine  108  is configured to set a specific light profile of the adjustable light source  102 . The specific light profile comprises information pertaining to a spectral content and/or intensity of light by which the individual user  110  is exposed  112 . 
     The second sensor  106  configured to sense data pertaining to a health condition and/or a behavior of the individual user  110  while the individual user  110  is exposed  112  to the specific light profile. 
     The second sensor  106  may be a wearable electronic device carried by the individual use. The second sensor  106  may be a wearable electronic device that can be worn on the body of the individual user  110 . The second sensor  106  may be an implant or an accessory. 
     The second sensor may be configured to monitor the user&#39;s health condition and/or behavior. The second sensor may be in contact with the user to collect data about the user. The second sensor may measure the activity of the individual user. The second sensor may be referred to as an activity tracker. The activity tracker may monitor and track movement-related metrics such as distance covered by walking or running, calorie consumption. The second sensor may be configured to measure blood pressure. The second sensor may comprise a gyroscope and/or an accelerometer. The gyroscope and/or accelerometer, may be used to specify the movement of the individual user if the second sensor is worn by the individual user. The movement pattern determined by the second sensor may provide information about the health status and/or the behavior of the individual user. A gyroscope and/or an accelerometer may e.g. provide information about if the individual user is active or still. The gyroscope and/or an accelerometer may e.g. or if the user uses slow or fast movements providing information about the mood of the individual user. 
     The second sensor may communicate with the central control engine via wireless communication e.g. by Bluetooth, Zigbee, Wifi, RFID, or NFC. 
     The second sensor may e.g. be a mobile phone, a tablet, a keyfob, a smart watch, or a smart bracelet. 
     The first database  109   a  comprises genomic data pertaining to the each of the plurality of individual users. 
     The central control engine  108  is further configured to determine a data set linking the specific light profile, genomic data pertaining to the individual user  110 , and the data pertaining to the health condition and/or the behavior of the individual user  110  sensed by the second sensor  106 . The central control engine  108  in also configured to store the linked data set in a second database  109   b.    
     Thus, the light control system  200  allows for building up of a data base for providing customized light to individuals. 
     The first database  109   a  and/or the second database  109   b  may be software and/or hardware implemented. The databases  109   a  and/or  109   b  may be located in one specific device. Alternatively, the databases  109   a  and/or  109   a  may be distributed among a plurality of devices. The databases  109   a  and/or  109   a  may be accessible via a computer network such the internet. The databases  109   a  and/or  109   a  may be a part of a cloud  114 . 
     The first database  109   a  and the second database  109   b  may be the same data base. 
     The first sensor  104  may be configured to sense data pertaining to a health condition and/or a behavior of the individual user while the individual user is exposed to the specific light profile. The first sensor may for example be a digital camera. The digital camera may be used to capture an image or images of the individual user. 
     Image recognition may further be used to determine the health status and/or the behavior of the individual user. Image recognition may for example determine if the individual user is happy or depressed. The first sensor and/or the central control engine may be configured to perform the identification on an image or images captured by the digital camera. 
     The first sensor may communicate with the central control engine via wireless communication e.g. by Bluetooth, Zigbee, Wifi, RFID, or NFC. 
     Thus, the first sensor and/or the second sensor may be configured to sense data pertaining to a health condition and/or a behavior of the individual user. One or more sensors may therefore be used for the sensing. A combination of data obtained by more than one sensors may further be used. 
     The first sensor may be physically separate from the second sensor. 
     The second sensor may form or be implemented in a separate unit in the space. 
     The first sensor and the second sensor may communicate with each other over a wired or wireless communication network. 
     The light control system  200  may comprise one or more light sensors, see  FIGS. 1 and 2 . In the example of  FIG. 1 , the control system comprises one light sensor  116  worn by the user  110  of the light control system  200 . The second sensor  106  may comprise the light sensor  116 . The second sensor  106  may form the light sensor  116 . 
     The light sensor  116  is arranged inside the space  100 . 
     It is, however, realized that light sensors may also be arranged outside the space  100 . According to other embodiments the light sensor(s) may be arranged on a ceiling of the space  100 . The light sensor(s) may be arranged on a wall of the space  100 . The light sensor(s) may be arranged on a floor of the space  100 . Further, in case of the light control system comprising a plurality of light sensors one or more of the light sensors may be worn by users of the light control system and one or more of the light sensors may be arranged inside (or possibly also outside) the space  100 . 
     The first sensor  104  may comprise the light sensor. The first sensor  104  may form the light sensor  116 . 
     The light sensor(s) is arranged to measure illumination data in the space  100 . The illumination data may comprise parameters pertaining to a spatial distribution of the spectral content of the light in the space  100  and a spatial distribution of the light intensity in the space  100 . The illumination data represents the light exposure  112  of the individual user  110  in the space  100 . The light exposure  112  pertains to the light emitted by the adjustable light source  102 . The light sensor  116  may further measure ambient light present in the space. The ambient light may, for example, originate from light entering the space from a window. The ambient light may be natural light originating from sun light. 
     The light sensors, e.g. the light sensor  116 , are further configured to communicate the measurement to the central control engine  120 . As a non-limiting example, a light sensor may comprise an image sensor. Other non-limiting examples of light sensors are photo sensors, biosensors, gas ionic sensors. The image sensor may be comprised in a camera. 
     The camera may be a digital camera. 
     The adjustable light source  102  may have an integrated light sensor. The integrated light sensor may be configured to sense properties of the actual transmitted light from the adjustable light source  102 . 
     The light sensor may communicate with the central control engine via wireless communication e.g. by Bluetooth, Zigbee, Wifi, RFID, or NFC. 
     The central control engine  108  may further be configured to determine a data set linking the specific light profile, genomic data pertaining to the individual user  110 , and the data pertaining to the health condition and/or the behavior of the individual user  110  sensed by the second sensor  106 , and the illumination data comprising parameters pertaining to a spatial distribution of the spectral content of the light in the space  100  and a spatial distribution of the light intensity in the space  100 . As an example, the linked data, e.g. stored as entries in the database  109   b  allows for correlation of a given health condition, the light exposure of the individual user in the space  100  to a specific genomic data. The light exposure of the individual user  110  pertains to the light emitted by the adjustable light source  102  and the spatial distribution of the spectral content of the light in the space  100  and a spatial distribution of the light intensity in the space  100 . A better determination of the actual light content that the individual user is exposed to may thereby be achieved. 
     The light control system may further comprise a plurality of adjustable light sources. 
     The adjustable light source may be solid state based light source, e.g. light based on LED-, OLED-, AMOLED-, Electro Luminescent wire-, or LASER-technology. The adjustable light source may form part of a light panel comprising an adjustable light source or a plurality of adjustable light source. 
     The light panel may, for example, comprise different light sources, each emitting light with a certain spectral range such that an adjustable light source is achieved. One or several of the light sources within the light panel may emit visible light, ultra-violet light or infra-red light. 
     Next, an example of the method for generating a database to be used to set illumination of an adjustable light source is described with reference to  FIGS. 3, 4   a  and  4   b.    
     The method  300  comprises, for a plurality of different users, identifying  302  an individual user  110 . The identifying  302  may be performed by the first sensor described above, e.g. by face recognition. 
     The method  300  further comprises setting  304  a specific light profile of the adjustable light source  102 . The specific light profile comprises information pertaining to a spectral content and/or intensity of light by which the individual user  110  is exposed  112 . 
     The method  300  further comprises, while exposing  112  the individual user  110  for the specific light profile, sensing data  306  pertaining to a health condition and/or a behavior of the individual user, determining  308  a data set linking the specific light profile, genomic data, e.g. retrieved from the first database  109   a , pertaining to the individual user  110 , and the data pertaining to the health condition and/or the behavior of the individual user  110  as sensed  306  while exposing  112  the individual user  110  to the specific light profile, and storing  310  the linked data set in a database, e.g. the second database  109   b  as discussed above. 
     In  FIG. 4 a   , the sensing data  306  is exemplified by the first sensor  104 , being a digital camera, determining a health condition and/or behavior of the individual user  106 . The camera may, for example, determine that the individual user  106  has a happy facial expression  402  and/or an upright body posture  404  indicating a health condition and/or behavior of the individual user, which may be characterized as happy and strong. 
     The entry in the database formed by the method  300  thereby links the light exposure  112  from the adjustable light source  102  with the health condition and/or the behavior of the individual user  110  as well as the genomic data of the individual user  110 . The database  109   b  is therefore built up which allows for matching of a specific light exposure, genomic data and a health condition and/or a behavior of an individual user  110 . 
     The above example illustrates that a happy and strong health condition and/or behavior of the individual user may be linked to the specific light exposure  112  pertaining to the specific light profile, of an individual user having a specific genomic data. 
     The method  300  may further comprise, for a specific individual user  106 : exposing  312  the specific individual user  110  for different specific light profiles  406   a  and  406   b , illustrated by the light exposure  112  and  408  in  FIGS. 4 a  and 4 b   , respectively. 
     The method  300  further comprising sensing data  314  pertaining to a health condition and/or a behavior of the specific individual user  110  for each different specific light profile. The method  300  then links  316  each different specific light profile, genomic data pertaining to the specific individual user  110 , and the data pertaining to the health condition and/or the behavior of the specific individual user sensed  314  while exposing  112 ,  114  the specific individual user  110  for each different specific light profile. 
     The database may thereby be built up faster. A better correlation of the genomic data pertaining to an individual user to the different specific light exposures, and the associated health condition and/or a behavior of an individual user may further be obtained. 
     The different specific light profiles  406   a  and  406   b , illustrated by the light exposure  112  and  408  in  FIGS. 4 a  and 4 b   , respectively may be different in spectral content and/or light intensity. 
     In  FIG. 4 b   , the sensing data  314  is exemplified by the first sensor  104 , again being a digital camera, determining a health condition and/or behavior of the individual user  110 . The camera may, for example, determine that the individual user  110  has a sad facial expression  410  and a forward bent body posture  412  indicating a health condition and/or behavior of the individual user which may be described as sad and distressed. 
     Thus a sad and distressed health condition and/or behavior of the individual user may be linked to the light exposure  408  pertaining to a different specific light profile than the light exposure  112  above for the individual user having a given genomic data. 
     By way of example, the light exposure  112  may have a first spectral light distribution having a first main light intensity peak about a first peak wavelength providing light stimulation. The light exposure  408  may have a second light source configured to emit light having a second spectral light distribution having a second main light intensity peak about a second peak wavelength being different from the first peak wavelength. 
     The wording light stimulation may be construed as light suitable for inducing a biological and/or behavioral effect on a human or animal. The biological and/or behavioral effects may include a change in melatonin secretion, body temperature, cortisol secretion, heart rate, alertness, cognitive performance, psychomotor performance, brain blood flow and/or EEG response. 
     The first peak wavelength may be within the range of 450-512 nm, preferably 450-490 nm. 
     The adjustable light source may be a cold white light emitter and the first peak wavelength is within the range of 450-490 nm. 
     The adjustable light source may be a cold white light emitter and the first peak wavelength is within the range of 450-512 nm. 
     The light emitted by the adjustable light source may thereby have a stimulating effect as the sensitivity of the melanopsin receptors is reported to be in the span of 450-520 nm, typically having a peak sensitivity in the range 470-490 nm. The light emitted by the adjustable light source may thereby increases cortisol and suppress melatonin in humans whereby an increasing attentiveness and focus may be achieved for a user illuminated by the illumination apparatus. 
     The adjustable light source may be a cold white light emitter and the second peak wavelength is within the range of 440-450 nm or 490-500 nm. 
     These peak wavelength ranges are near but outside the wavelength range of the first peak wavelength, i.e. 450-490 nm. A lower suppression of melatonin may thereby be achieved by the light having the second peak wavelength. The light emitted by the adjustable light source may thereby have a less stimulating effect. 
     The database may thereby provide light recipes, i.e. directives, for achieving a given health condition and/or a behavior of an individual user having a given genomic data. The database may therefore be used to set a suitable light exposure for a new user provided that the genomic data of the new user matches or at least partly matches genomic data of the database. An improved starting point for achieving a desirable health condition and/or behavior of an individual user is further provided by the database providing information pertaining to the light exposure to be used to induce the desirable health condition and/or behavior. 
     To this end, it should be noted that the first database  109   a  and the second database  109   b  may be the same database. 
     The central control engine may further be configured to determine a point in time at which the individual user is exposed to the specific light profile. 
     The central control engine may further be configured to determine a time of exposure during which the individual user is exposed to the specific light profile. 
     The determining of the data set linking the specific light profile, genomic data pertaining to the individual user, and the data pertaining to the health condition and/or the behavior of the individual user sensed while exposing the individual user to the specific light profile may further comprise determining a point in time at which the individual user is exposed to the specific light profile. 
     An advantage being that the time the exposure took place may be determined. The point in time may further be correlated to the light exposure and stored in the database. 
     The point in time may further be understood as the time of day, day of week, and/or the day of a year. 
     By determining the time point and/or the duration of the light exposer a more accurate data base may be built up. 
     To this end, the determining of the data set linking the specific light profile, genomic data pertaining to the individual user, and the data pertaining to the health condition and/or the behavior of the individual user sensed while exposing the individual user to the specific light profile may further comprise determining a time of exposure during which the individual user is exposed to the specific light profile. 
     An advantage being that the dosage of the exposure may be determined. The time of exposure may further be stored in the database. 
     The linking each different specific light profile, genomic data pertaining to the specific individual user, and the data pertaining to the health condition and/or the behavior of the specific individual user sensed while exposing the specific individual user for each different specific light profile may further comprise points in time at which the individual user is respectively exposed to each different specific light profile. 
     The linking each different specific light profile, genomic data pertaining to the specific individual user, and the data pertaining to the health condition and/or the behavior of the specific individual user sensed while exposing the specific individual user for each different specific light profile may further comprise times of exposure during which the individual user is respectively exposed to each different specific light profile 
     A specific light profile may be selected from a set of predetermined specific light profiles. Light profiles known to influence the health condition and/or behavior of an individual may thereby be used. 
     Known light profiles may thereby be used for building up the database. 
     By way of example, genomic data comprising information on the PER3 gene polymorphisms may be used by the method and system described above. PER3 gene polymorphisms have been associated with differences in human sleep-wake phenotypes and sensitivity to light, see for example “Diurnal preference, mood and the response to morning light in relation to polymorphisms in the human clock gene PER3”, Nature Sci Rep. 2017 Jul. 31; 7(1):6967. In short, the Period (PER) gene family is an important component of the biological clock. The human PER3 gene shows a high level of polymorphism suggesting that PER3 may account for individual differences in human circadian and sleep phenotypes. There is further evidence that, in humans, PER3 may be related to diurnal preference, or the personal inclination to be more/less active at different times of the waking day. 
     The method and system therefore offers the possibility to link genomic data comprising information on the PER gene polymorphisms with a specific light profile and data pertaining to the health condition and/or the behavior of the individual user. 
     The act of sensing may comprise one or more of: pulse, heart rate variability, blood pressure, sleep pattern, eating habits, facial expression, oxygen level, body posture, tone of voice, hormone levels, movement pattern, and productivity. 
     To achieve this the second sensor may be configured to sense pulse, heart rate variability, blood pressure, sleep pattern, eating habits, facial expression, oxygen level, body posture, tone of voice, hormone levels, movement pattern, and/or productivity. 
     The second sensor may be assigned to the specific user. With reference to “A practical guide to measuring physical activity” by L. G. Sylvia et al, J. Acad. Nutr Diet., 2014, 114(2), 199-208 different sensors exist for measuring the health status and/or behavior of a human. 
     To this end, the second sensor may be a thermometer. The temperature of the human or animal may be measured by the thermometer. The second sensor may be a thermistor. 
     The second sensor may be an accelerometer. The accelerometer may measure acceleration in real time and detect movement in up to three orthogonal planes. The accelerometer may be worn in numerous places on the body of the human or animal, including waist, hip, and thigh. 
     The second sensor may be a pedometer. The pedometers measure number of steps taken by the human or animal when the hip of the human or animal accelerates vertically with a force beyond a chosen threshold, typically measured with by the deflection of a horizontal, spring-suspended lever arm. 
     The second sensor may be a heart rate monitor. The heart rate monitor provides a physiological indicator of activity and energy expenditure. The heart rate monitor may provide real-time data on the frequency, duration, and/or intensity of activity of the human or animal. 
     The second sensor may be an armband. The armband may use motion and/or heat-related sensors, i.e., heat flux, galvanic skin response, skin temperature, body temperature, to measure energy expenditure and monitor activity of the human or animal. 
     The first sensor and/or the second sensor may comprise one or several light sensors. The light sensors may be arranged on the individual person to be worn or to be mounted at certain points in an area. The light sensors may be arranged to measure the intensity of light it is being exposed to and/or the spectral content of the light. 
     The central control engine may comprise a controller. The controller may be implemented using instructions that enable hardware functionality, for example, by using executable computer program instructions in a general-purpose or special-purpose processor that may be stored on a computer readable storage medium such as a memory to be executed by such a processor. The controller may be configured to read instructions from the memory and execute these instructions to control the operation of the light control system. The memory may be implemented using any commonly known technology for computer-readable memories such as ROM, RAM, SRAM, DRAM, CMOS, FLASH, DDR, SDRAM or some other memory technology. 
     The person skilled in the art realizes that the present invention by no means is limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims. For example, the individual user is above described to be a human, but may alternatively be an animal. 
     The term individual user should be interpreted broadly and may be understood as the individual user being a plant. 
     The wording “health condition” may therefore be understood as to relate to the pathology of the plant, i.e. the presence of a plant disease in the plant caused by pathogens, i.e., by infectious organisms, and/or environmental conditions, e.g. physiological factors such as light exposure, draught, or temperature. 
     The wording “behavior of an individual user”. i.e. the behavior of the plant, may be understood as the response of to internal and external stimuli. The wording “behavior of an individual user” may therefore be understood as the physical state and/or motion associated with the plant. The physical state may, for example, relate to the form of the leaves of the plant. As an example curled or droopy leaves may imply that the plant is stressed. Yellow leaves may indicate that the plant has not produced enough chlorophyll. To this end, a plant with shiny, upright, and colorful leaves, e.g. dark green leaves may indicate that the plant is in a healthy state. 
     The observable motion may, for example, be the bending of a plant, e.g. the bending of the stem of the plant. As an example, plants such as seedlings which have stretched skinny stems and look fragile may lack sufficient light exposure by natural and/or artificial light. As a result, the plant may be bending forward rather than growing up straight with a strong stem. 
     The first sensor may be configured to identify an ID specific to the individual. The first sensor may be configured to read a QR, pin code, bar code, by which the individual user may be identified. 
     Additionally, variations to the disclosed embodiments can be understood and effected by the skilled person in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims.