Light emission control device, electronic device, and control method

A light emission control device comprising:

• a light emission controller which controls a light emitter and performs normal control and wake-up control, the normal control being control for causing the light emitter to emit light having a color temperature and luminance according to an instruction of a user, the wake-up control being control for causing the light emitter to emit light at increasing luminance over time to wake up the user who is sleeping,
• wherein maximum luminance of light emitted by the light emitter in the wake-up control is greater than maximum luminance of light emitted by the light emitter in the normal control,
• in the wake-up control, when the light emission controller causes the light emitter to emit light at increasing luminance over time according to a predetermined brightening pattern, the light emission controller further performs boost control, the boost control being control for causing the light emitter to emit light at more steeply increasing luminance than in the predetermined brightening pattern, and
• the light emission controller starts the boost control at a time when the user is determined to be in any one of a wakeful state, a hypnagogic state, and a light sleep state,
• the light emitter includes a first light source and a second light source which emits light having a color temperature higher than a color temperature of light emitted by the first light source,
• the maximum luminance of the light emitted by the light emitter in the normal control is equivalent to maximum luminance of light which the user is allowed to cause the first light source to emit, and
• in the wake-up control, the light emission controller causes the light emitter to emit light having luminance greater than the maximum luminance of the light emitted by the light emitter in the normal control, by causing, out of the first light source and the second light source, the second light source to emit light.

A method for controlling a light emitter, the method comprising:

• performing normal control and wake-up control, the normal control being control for causing the light emitter to emit light having a color temperature and luminance according to an instruction of a user, the wake-up control being control for causing the light emitter to emit light at increasing luminance over time to wake up the user who is sleeping,
• wherein maximum luminance of light emitted by the light emitter in the wake-up control is greater than maximum luminance of light emitted by the light emitter in the normal control,
• the light emitter includes a first light source and a second light source which emits light having a color temperature higher than a color temperature of light emitted by the first light source, and
• the maximum luminance of the light emitted by the light emitter in the normal control is equivalent to maximum luminance of light which the user is allowed to cause the first light source to emit, and
• in the wake-up control, light emitted by the light emitter has luminance greater than the maximum luminance of the light emitted by the light emitter in the normal control, by causing, out of the first light source and the second light source, the second light source to emit light.