Head worn electronic device

Abstract

An electronic device is disclosed comprising: a frame configured to be worn on a head of a user; a first light emitter mounted on the frame and configured to illuminate a first eye of the user, wherein an intensity and a spectrum of the first light emitter is adjustable; a second light emitter mounted on the frame and configured to illuminate a second eye of the user, wherein an intensity and a spectrum of the second light emitter is adjustable; a clock; a memory configured to store a target light profile comprising time-resolved data on an amount of light to be accumulated over time by the first and/or second eye of the user, wherein the time-resolved data comprises information about spectrum and intensity; and a controller configured to control the intensity and spectrum of the first and second light emitter based on the time and the target light profile.

Claims

1. An electronic device comprising: a frame configured to be worn on a head of a user; a first light emitter mounted on the frame and configured to illuminate a first eye of the user, wherein a first intensity and a first spectrum of the first light emitter is adjustable; a second light emitter mounted on the frame and configured to illuminate a second eye of the user, wherein a second intensity and a second spectrum of the second light emitter is adjustable; a first driver motor configured to adjust a first direction of the first light emitter; a second driver motor configured to adjust a second direction of the second light emitter; a clock configured to determine a time of day; a memory configured to store a target light profile; and a controller configured to control the first intensity the second intensity and the first spectrum and the second spectrum of the first light emitter and the second light emitter, respectively, based on the time of day, a circadian rhythm of the user, and the target light profile, such that a first accumulated light exposure and a second accumulated light exposure to the first eye and the second eye, respectively, of the user is aligned with the target light profile over the predetermined timespan; wherein the target light profile comprises time-resolved data on a first amount of light and a second amount of light and a first angle of incidence and a second angle of incidence to be received by the first eye and the second eye, respectively, of the user over the predetermined timespan, wherein the controller further controls the first driver motor to control a first direction of light emitted from the first light emitter based on at least one of: the first angle of incidence or the first intensity and the first spectrum of the first light emitter, of the time-resolved data, and wherein the controller further controls the second driver motor to control a second direction of light emitted from the second light emitter based on at least one of: the second angle of incidence, or the second intensity and the second spectrum of the second light emitter, of the time-resolved data.

2. The electronic device according to claim 1, wherein the controller is further configured to individually control the first and second light emitters.

3. The electronic device according to claim 1, wherein the first and/or second light emitter is adjustably mounted on the frame.

4. The electronic device according to claim 1, further comprising: a light sensor configured to sense ambient light; and wherein the controller is further configured to adjust the first intensity and the second intensity and the first spectrum and the second spectrum of the first and the second light emitter, respectively, based on the sensed ambient light.

5. The electronic device according to claim 1, further comprising optics mounted to the frame, wherein the optics are configured to filter and/or refract ambient light.

6. The electronic device according to claim 5, wherein the optics comprises a display, wherein an intensity and a spectrum of each of light emitters associated with the display are adjustable; and wherein the controller is further configured to control the intensity and spectrum of each of the light emitters associated with the display based on the time and the target light profile.

7. The electronic device according to claim 1, further comprising an eye sensor configured to determine eye characteristics of the first and/or second eye of the user.

8. The electronic device according to claim 7, wherein the controller is further configured to, based on the eye characteristics, determine an identity of the user.

9. The electronic device according to claim 8, wherein the controller is further configured to, based on the eye characteristics, adjust the target light profile.

10. The electronic device according to claim 7, wherein the controller is further configured to determine a size of the pupil of the first and/or second eye of the user based on the eye characteristics.

11. The electronic device according to claim 7, wherein the controller is further configured to determine an optical transfer function of the first and/or the second eye of the user based on the eye characteristics.

12. The electronic device according to claim 1, further comprising a transceiver configured to communicate with one or more of: a server; an external sensor; and an external light emitter.

13. The electronic device according to claim 1, further comprising sensors configured to sense one or more of: a movement of the user; a position of the user; and a health status of the user.

14. The electronic device according to claim 1, further comprising a brain sensor configured to determine brain characteristics of the user.

15. The electronic device according to claim 14, wherein the controller is further configured to determine a state of the brain of the user based on the brain characteristics.

16. The electronic device according to claim 14, wherein the controller is further configured to control the first and/or second light emitter based on the brain characteristics.

17. The electronic device according to claim 1, wherein the first driver and the second driver motor comprises a first pan/tilt motor and a second pan/tilt motor, respectively.

18. The electronic device according to claim 17, wherein the controller is further configured to control tilting and rotating the first driver motor and the second driver motor.

19. An electronic device comprising: a frame configured to be worn on a head of a user; a first light emitter mounted on the frame and configured to illuminate a first eye of the user, wherein a first intensity and a first spectrum of the first light emitter is adjustable; a second light emitter mounted on the frame and configured to illuminate a second eye of the user, wherein a second intensity and a second spectrum of the second light emitter is adjustable; a clock configured to determine a time of day; a memory configured to store a target light profile; a controller configured to control the first intensity and the second intensity and the first spectrum and the second spectrum of the first light emitter and the second light emitter, respectively, based on the time of day, a circadian rhythm of the user, and the target light profile, such that a first accumulated light exposure and a second accumulated light exposure to the first eye and the second eye, respectively, of the user is aligned with the target light profile over the predetermined timespan, wherein the target light profile comprises time-resolved data on a first amount of light and a second amount of light and a first angle of incidence and a second angle of incidence to be received by the first eye and the second eye, respectively, of the user over the predetermined timespan, wherein the controller is further configured to control direction of light emitted from the first light emitter and the second light emitter based on the time-resolved data on the angle of incidence along with the intensity and the spectrum of the first light emitter and the second light emitter, wherein the controller is further configured to control a first direction of light emitted from the first light emitter based on at least one of: the first angle of incidence, or the first intensity and the first spectrum of the first light emitter, of the time-resolved data, wherein the controller is further configured to control a second direction of light emitted from the second light emitter based on at least one of: the second angle of incidence, or the second intensity and the second spectrum of the second light emitter, of the time-resolved data, and wherein the first light emitter and second light emitter each comprises a plurality of light sources which are arranged in directional groups, the plurality of light sources in different directional groups being configured to emit light in different directions, and the direction of light emitted from the first light emitter and the second light emitter is controlled by enabling the plurality of light sources in the one or more directional groups.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The above and other aspects of the present invention will now be described in more detail, with reference to appended drawings showing variants of the present disclosure. The figures should not be considered limiting the inventive concept to the specific embodiment; instead they are used for explaining and understanding the inventive concept.

(2) 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 variants of the present disclosure. Like reference numerals refer to like elements throughout.

(3) FIG. 1 illustrates an isometric view of an electronic device.

(4) FIG. 2 illustrates an inside of the frame of the electronic device.

(5) FIG. 3 illustrates an inside of the frame of the electronic device.

(6) FIG. 4 illustrates a light emitter comprising a light source and a driver.

(7) FIG. 5 illustrates an isometric view of an electronic device comprising a brain sensor and a display.

(8) FIG. 6 illustrates an inside of the frame of the electronic device comprising a brain sensor and a display.

(9) FIG. 7 illustrates an inside of the frame of the electronic device comprising a brain sensor and a display.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(10) The present inventive concept will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred variants of the inventive concept are shown. This inventive concept may, however, be implemented in many different forms and should not be construed as limited to the variants set forth herein; rather, these variants are provided for thoroughness and completeness, and fully convey the scope of the present inventive concept to the skilled person.

(11) An electronic device according to the present disclosure will now be described with reference to FIG. 1-FIG. 7.

(12) FIG. 1 illustrates an isometric view of an electronic device 10. The electronic device 10 comprises a frame 100 configured to be worn on a head of a user. The frame 100 comprises a rim 130. The frame 100 further comprises a first temple 110 and a second temple 120. The first temple 110 is connected to a first side of the rim 130. The second temple 120 is connected to a second side of the rim 130. The first side of the rim 130 and the second side of the rim 130 are connected by a bridge. The frame 100 may further comprise nose pads. The frame 100 may further comprise a first opening 136 and/or a second opening 138 for incoming ambient light.

(13) A skilled person realizes that other frames may be used for the electronic device 10. For instance, the frame 100 may comprise an elastic strap instead of temples as shown in FIG. 1. The frame 100 may be configured to fit tightly around the eyes of the user. A tight fit of the frame 100 may reduce an amount of ambient light entering through gaps between the frame 100 and the user.

(14) The electronic device 10 further comprises a first light emitter 142 mounted on the frame 100 and configured to illuminate a first eye of the user. An intensity and a spectrum of the first light emitter 142 are adjustable.

(15) The electronic device 10 further comprises a second light emitter 144 mounted on the frame 100 and configured to illuminate a second eye of the user. An intensity and a spectrum of the second light emitter 144 are adjustable.

(16) The first and second light emitter 142, 144 may comprise a plurality of light sources. The light sources of the plurality of light sources may be configured to emit light of different spectra. The spectra of light emitted by the first and second light emitters 142, 144 may be adjusted by adjusting the spectra of the plurality of light sources of respective light emitter 142, 144. It is to be understood that the electronic device 10 may comprise a further number of light emitters configured to illuminate the first and second eyes of the user.

(17) The electronic device 10 further comprises a controller 112 configured to control the intensity and spectrum of the first and second light emitter 142, 144. The controller 112 may be configured to individually control the first and second light emitters 142, 144. For example, the controller 112 may compensate for non-uniform ambient light conditions by individually controlling the first and second light emitter 142, 144. It is to be understood that, in case the electronic device 10 comprises a further number of light emitters, the controller 112 may be configured to individually control each light emitter.

(18) The first and/or second light emitter 142, 144 may be adjustably mounted on the frame 100. For instance, the direction and/or position of the light emitters 142, 144 may be adjustable. Therefore, it may allow the electronic device 10 to be adjustable to different users. It may also allow the electronic device 10 to imitate natural lighting conditions. For instance, a blue sky may be imitated by letting blue light impinge from a position above the eyes of the user.

(19) The electronic device 10 may further comprise a first driver configured to adjust the first light emitter 142 and a second driver configured to adjust the second light emitter 144. An example of a light emitter and a driver will be described in relation to FIG. 4. The controller 112 may be further configured to control the first and/or second driver. A driver may be configured to control a position of a light emitter 142, 144 and/or a direction of light emitted by a light emitter 142, 144. Thereby, it may allow the electronic device 10 to imitate evolving natural lighting conditions. For example, the electronic device 10 may imitate a position of a sun in the sky.

(20) The electronic device 10 may further comprise a clock 122 configured to determine a time. The clock 122 may be further configured to determine a date. The electronic device 10 may thereby imitate lighting conditions of a sunset at a time where the sun usually sets. The electronic device 10 may further comprise a memory 114 configured to store a target light profile comprising time-resolved data on an amount of light to be received by the first and/or second eye of the user. The target light profile may be associated with the user. The target light profile may comprise an optical transfer function of the eye of the user. The optical transfer function of the eye may describe how an intensity and a spectrum of light impinging on the eye relates to an intensity and a spectrum of light reaching a retina in the eye. The target light profile may comprise a chemical transfer function of the eye of the user. The chemical transfer function of an eye may describe a relation between an intensity and spectrum of light reaching a retina in the eye and a generation of hormones. The time-resolved data may comprise information about spectrum and intensity.

(21) The controller 112 may be further configured to adjust the intensity and spectrum of the first and/or second light emitter 142, 144 based on the time and the target light profile.

(22) The target light profile may further comprise time-resolved data on angle of incidence for light to be received by the first and/or second eye of the user. The controller 112 may be further configured to control the first and/or second driver based on the time-resolved data on angle of incidence.

(23) The electronic device 10 may further comprise a light sensor 132 configured to sense ambient light. The controller 112 may be further configured to adjust the intensity and spectrum of the first and/or second light emitter 142, 144 based on the sensed ambient light. The light sensor 132 may sense a spectrum and/or an intensity of ambient light. The controller 112 may adjust the intensity and spectrum of the first and/or second light emitter 142, 144 based on time of day and/or date.

(24) The electronic device 10 may further comprise optics 134 mounted to the frame 100. The optics 134 may be configured to filter and/or refract ambient light. For example, the optics 134 may be one or more of a blue-light filter, an intensity-reducing filter, a corrective lens, and a polarizing filter. The optics 134 may be adjustable. For instance, an intensity reduction of an intensity-reducing filter may be adjustable.

(25) The optics 134 may comprise a display 480 as exemplified in FIG. 5-FIG. 7. An intensity and a spectrum of each of light emitters associated with the display 480 may be adjustable. The controller 112 may be further configured to control the intensity and spectrum of each of the light emitters associated with the display 480 based on the time and the target light profile. The controller 112 may be further configured to control the intensity and the spectrum of each of the light emitters associated with the display 480 further based on the eye characteristics. The display 480 may be configured to display information to the user. The display 480 in FIG. 5-FIG. 7 is specifically shown to be comprised in the left optic 134, however, it is to be understood that the display 480 may alternatively be comprised in the right optic 134. Additionally, both the left and the right optic 134 may comprise a display 480.

(26) At times when the display 480 is not in use, for example in case the display 480 is not currently showing information, the light emitters associated with the display may be used in a similar manner as the first and/or second light emitter 142, 144 of the device. Thus, the light emitters associated with the display 480 may thereby be configured to illuminate the first and/or second eye of the user and to display information for the user.

(27) The electronic device 10 may further comprise an eye sensor 146, 148 configured to determine eye characteristics of the first and/or second eye of the user.

(28) For example, in case the eye sensor 146, 148 determines that the eyes of the user are shut, the light emitters 142, 144 may be switched off to conserve power. Eye characteristics may further be used to determine if the user is sleeping.

(29) The controller 112 may be further configured to determine a size of the pupil of the first and/or second eye of the user based on the eye characteristics. The size of the pupil may be determined by an imaging sensor, e.g. a camera.

(30) The controller 112 may be further configured to determine an optical transfer function of the first and/or second eye of the user based on the eye characteristics. The electronic device 10 may comprise additional components, e.g. a tunable laser diode and/or beamsplitters, in order to determine eye characteristics related to the optical transfer function of the first and/or second eye of the user. The optical transfer function may be determined using a double-pass method. The method obtains information about the light that enters the eye, crosses the ocular media, reflects in the fundus and returns. By combining the size of the pupil of the first and/or second eye and the optical transfer function of the first and/or second eye, information related to the amount of light reaching the retina(s) and/or other photoreceptor cells of the first and/or second eye may be improved compared to when using only the size of the pupil or the optical transfer function.

(31) The controller 112 may be further configured to, based on the eye characteristics, determine an identity of the user. For example, the identity of the user may be determined by detecting features of a retina of the eye of the user.

(32) The controller 112 may be further configured to, based on the eye characteristics, adjust the target light profile. For example, in case the eye characteristics indicate that the user is tired, the target light profile may be updated in order to boost the energy of the user. Such an energy boost may be realized by increasing an amount of blue light of the light illuminating the eyes of the user.

(33) The electronic device 10 may further comprise a transceiver 116 configured to communicate with one or more of a server, an external sensor and an external light emitter. For example, the electronic device 10 may retrieve information relating to the user from the server. An example of such information may be the target light profile or updates to the target light profile.

(34) A transceiver 116 configured to communicate with an external light emitter may allow the electronic device 10 to adjust a total light exposure of the user. For example, the electronic device 10 may adjust the first and second light emitters 142, 144 based on information relating to the external light emitter. It is to be understood that the electronic device 10 may adjust an intensity and spectrum of the external light emitter by communicating via the transceiver 116. Thus, the electronic device 10 may adjust the total light exposure of the user by adjusting the first light emitter 142, the second light emitter 144, and the external light emitter.

(35) A transceiver 116 configured to communicate with an external sensor may allow for the electronic device 10 to sense additional data relating to the user. For example, the electronic device 10 may communicate with a continuous blood glucose monitor, which may allow the electronic device 10 to retrieve information relating to a blood glucose level of the user. As a further example, the electronic device 10 may communicate with a sensor monitoring a quality of air, e.g. carbon dioxide levels, in a vicinity of the user. The electronic device 10 may then adjust the first and/or second light emitter 142, 144 based on a sensed quality of air in the vicinity of the user.

(36) The electronic device 10 may further comprise sensors 124, 126 configured to sense one or more of a movement of the user, a position of the user, and a health status of the user. For instance, the movement of the user may be determined by an accelerometer 124. The position of the user may be determined by a gyro, and/or a GPS. By a GPS, the electronic device 10 may determine a global position of the user, and adjust the intensity and spectrum of the first and second light emitter 142, 144 further based on the global position. For instance, a user in a Scandinavian country may need different intensity and spectrum settings of the light emitters 142, 144 than a user in a country in southern Europe do.

(37) Sensors configured to sense the health status of the user may comprise a heart-rate monitor 126 to determine a pulse of the user. It is to be understood that the movement of the user, the position of the user, and the health status of the user may be determined by a combination of a plurality of sensors.

(38) A skilled person realizes that, even though not explicitly depicted in FIG. 1, the electronic device 10 may comprise an internal and/or external power source.

(39) FIG. 2 illustrates an inside of the frame 100 of the electronic device 10. As is seen, the first light emitter 142 is configured to illuminate the first eye of the user. The first light emitter 142 comprises a first light source 143. Likewise, the second light emitter 144 is configured to illuminate the second eye of the user. The second light emitter 144 comprises a second light source 145. It is to be understood that the first and/or second light emitters 142, 144 may be positioned in other parts of the rim 130 of the frame 100 than illustrated in FIG. 2. For instance, the first and second light emitter 142, 144 may be positioned in a lower part of the rim 130. It is to be understood that additional light emitters may be mounted to the frame 100. As an example, a third light emitter may be mounted to the frame 100 and configured to illuminate the first eye of the user. In such case, the third light emitter may be mounted at a different position than the first light emitter 142. It is to be understood that a fourth light emitter corresponding to the third light emitter may be mounted to the frame 100 and configured to illuminate the second eye of the user.

(40) The frame 100 may comprise an eye sensor 146, 148. A first eye sensor 146 may be configured to determine eye characteristics of the first eye of the user. A second eye sensor 148 may be configured to determine eye characteristics of the second eye of the user.

(41) FIG. 3 illustrates an alternative arrangement of an inside of the frame 100 of the electronic device 10. As is seen, the first light emitter 242 is configured to illuminate the first eye of the user. The first light emitter 242 comprises a first plurality of light sources. Likewise, the second light emitter 244 is configured to illuminate the second eye of the user. The second light emitter 244 comprises a second plurality of light sources. It is to be understood that spacing between each light source in the first and second plurality of light sources may be smaller or larger than is depicted in FIG. 3.

(42) The light sources in the first and/or second plurality of light sources may be configured to emit light having varying spectra. The light sources in the first and/or second plurality of light sources may be adjustably mounted to the frame 100.

(43) A third light emitter 252, comprising a third plurality of light sources, may be mounted to the frame 100. The third light emitter 252 may be configured to illuminate the first eye of the user. A fourth light emitter 254, comprising a fourth plurality of light sources, may be mounted to the frame 100. The fourth light emitter 254 may be configured to illuminate the second eye of the user. It is to be understood that spacing between each light source in the third and fourth plurality of light sources may be smaller or larger than is depicted in FIG. 3.

(44) The light sources in the third and/or fourth plurality of light sources may be configured to emit light having varying spectra. The light sources in the third and/or fourth plurality of light sources may be adjustably mounted to the frame 100.

(45) FIG. 4 illustrates an example of a light emitter 30 comprising a light source 340 and a driver. The driver may be a pan/tilt motor 330 as is seen in FIG. 4. The pan/tilt motor 330 may be configured to rotate the light source 340 about a first axis 310. The pan/tilt motor 330 may be further configured to tilt the light source 340 about a second axis 320. The controller 112 may be further configured to control the rotation and tilt of the pan/tilt motor 330, and the controller 112 may thereby control a direction of light emitted by the light source 340 mounted on the pan/tilt motor 330.

(46) Alternatively, a light emitter may comprise a plurality of light sources arranged in a matrix. Light sources in the plurality of light sources may be light emitting diodes (LEDs). The light sources in the plurality of light sources may be arranged in color groups. The light sources in each color group may be configured to emit light having similar spectra. The light sources in different color groups may be configured to emit light of the different spectra. It is to be understood that the light sources in a color group may be mounted to the frame in a spatially dispersed manner. The light sources in the plurality of light sources may be arranged in directional groups. The light sources in each directional group may be configured to emit light having similar propagation directions. The light sources in different directional groups may be configured to emit light having different propagation directions. It is to be understood that the light sources in a directional group may be mounted to the frame in a spatially dispersed manner. It is to be understood that a light source in the plurality of light sources may simultaneously be arranged in a color group and a directional group. A spectrum light emitted by the light emitter may be controlled by enabling the light sources in one or more of the color groups of the light emitter. A direction of light emitted by the light emitter may be controlled by enabling the light sources in one or more of the directional groups of the light emitter.

(47) A skilled person realizes that positions of the first light emitter 142, the second light emitter 144, the controller 112, the clock 122, the memory 114, the light sensor 132, the optics 134, the eye sensor 146, 148, the transceiver 116, and further sensors indicated in FIG. 1-FIG. 3 are examples only, and may be varied in other variants of present disclosure. For example, the controller 112 may be positioned in the rim 130 instead of in the temple as indicated in FIG. 1.

(48) The electronic device 10 may further comprise a brain sensor 470 configured to determine brain characteristics of the user as exemplified in FIG. 5-FIG. 7. The brain sensor 470 may comprise a plurality of EEG sensors. The EEG sensors may be mounted on the inside of the frame 100, such that the EEG sensors are arranged on the head of the user when the user is wearing the electronic device 10. As is shown in the example in FIG. 5-FIG. 7, the brain sensor 470 may be mounted on the inside of the frame 100 such that the brain sensor 470 is in contact with the forehead of the user (which is exemplified by brain sensor 470a in FIG. 5-FIG. 7) and/or behind the ears of the user (which is exemplified by brain sensor 470b/470c in FIG. 5-FIG. 7). Alternatively, or additionally, the brain sensor 470 may be arranged to be in contact with a temple of the user (not shown in FIG. 5-FIG. 7). It is to be understood that the brain sensor 470 may be arranged to be in contact with other areas of the head of the user.

(49) The controller 112 may be further configured to determine a state of the brain of the user based on the brain characteristics. By measuring the brain waves of the user, the state of the brain may be determined. For instance, the controller may determine if the user has a strongly engaged mind or if the user is daydreaming.

(50) The controller 112 may be further configured to control the first and/or second light emitter 142, 144 based on the brain characteristics. For example, in case the mind of the user is determined to be strongly engaged, the first and/or second light emitter 142, 144 may be adjusted in order to help the user maintain the focus. Alternatively, the controller 112 may use a plurality of different sensors to determine if the first and/or second light emitter 142, 144 need to be adjusted in order for the user to reach a desired state of the brain. For instance, if the controller 112 determines that the user is lying in bed at night (using the clock 122 and a motion sensor/accelerometer 124), and the state of the brain is dominated by beta waves (beta waves are associated with a focused mind), the first and/or second light emitter 142, 144 may be controlled to help the user relax, i.e. affecting the state of the brain to be dominated by alpha waves. Thus, the active and automatic control of the electronic device 10 is improved.

(51) The person skilled in the art realizes that the present inventive concept by no means is limited to the preferred variants described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.

(52) For example, the electronic device 10 described above comprises optics 134, however variants without optics 134 may also be realized.

(53) Furthermore, the direction and or focus of light emitted from a light source may be controlled by a tuneable lens.

(54) Furthermore, the electronic device 10 may comprise additional optics and light emitters arranged such that the electronic device is enabled to display information for the user. The information may relate to the user itself, e.g. information related to health or calendar appointments, or be transmitted to the electronic device 10 (e.g. news flashes, traffic information etc.). The additional light emitters used for displaying the information may further be adjusted in the same manner described above for the first and second light emitter 142, 144.

(55) Additionally, variations to the disclosed variants 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.