Display system, electronic device, and lighting system

A display system comprising:

• a device including a light-emitting element that emits toward a user display light used for image display, and first special light within a wavelength range of 360 nm to 400 nm, inclusive, that suppresses the onset and the progression of myopia of the user;
• acquisition means for acquiring personal data indicating a given activity of the user within a predetermined past period;
• and
• a control unit that controls irradiation of the first special light on the basis of the acquired personal data when an image is displayed by the display light, wherein
• the control unit specifies a period when the user is outdoors in a time band during the day for the predetermined period as an outdoor location period on the basis of the acquired personal data, acquires (1) weather information indicating the weather in the time band during the day and (2) an average value of spectral irradiance of the first special light for each weather type observed outdoors in the time band during the day, calculates an energy amount of the first special light included in sunlight to which the user is exposed during outdoor activity in the time band during the day as a dosed energy amount on the basis of the specified outdoor location period and the acquired weather information and average value, and irradiates the first special light while determining an illuminance and an irradiation period of the first special light on the basis of the calculated dosed energy amount and an irradiated energy amount of the first special light acquired in advance that exhibits an effect of suppressing the onset and the progression of myopia.

A lighting system comprising:

• a light source configured by a light-emitting element that irradiates a first special light that suppresses the onset and the progression of myopia of a user and is within a wavelength range of 360 nm to 400 nm, inclusive, and a fluorescent material that covers a periphery of the light-emitting element;
• acquisition means for acquiring personal data indicating data of a given activity of the user within a predetermined past period;
• and
• a control unit that controls emission of the first special light by the light source on the basis of the acquired personal data when the fluorescent material emits light, wherein
• the control unit specifies a period when the user is outdoors in a time band during the day for the predetermined period as an outdoor location period on the basis of the acquired personal data, acquires (1) weather information indicating the weather in the time band during the day and (2) an average value of spectral irradiance of the first special light for each weather type observed outdoors in the time band during the day, calculates an energy amount of the first special light included in sunlight to which the user is exposed during outdoor activity in the time band during the day as a dosed energy amount on the basis of the specified outdoor location period and the acquired weather information and average value, and irradiates the first special light while determining an illuminance and an irradiation period of the first special light on the basis of the calculated dosed energy amount and an irradiated energy amount of the first special light acquired in advance that exhibits an effect of suppressing the onset and the progression of myopia.

A display system comprising:

• a display element that emits display light used for image display toward a user;
• a light-emitting element that emits toward the user first special light within a wavelength range of 360 nm to 400 nm, inclusive, that suppresses the onset and the progression of myopia of the user;
• and
• a control unit that controls at least irradiation of the first special light emitted by the light-emitting element, wherein
• the control unit determines an illuminance and an irradiation period on the basis of an energy amount of the first special light required to exhibit an effect of suppressing the onset and the progression of myopia, the energy amount reliably recovering effects that occur in the eyes of the user by irradiation of the first special light within a predetermined period, controls the light-emitting element on the basis of the determined illuminance and an irradiation period, and irradiates the first special light on the user.