Illumination apparatus and illumination control system

An illumination control system, comprising:

• an illumination apparatus comprising:
• a light emitter which emits first illumination light that is illumination light for illuminating a display screen, wherein, in a u′v′ chromaticity diagram which is a CIE 1976 uniform chromaticity scale diagram, the first illumination light has a correlated color temperature in a range from 4000 K to 5800 K, and u′v′ chromaticity coordinates in a range which satisfies 0.7125u′+0.3284<v′<0.7125u′+0.3339, and wherein the first illumination light is emitted onto the display screen;
• a controller which controls the light emitter, wherein:
• the controller controls the light emitter to cause the first illumination light to have a constant correlated color temperature in a range from 4000 K to 5000 K during a first time period from a predetermined time in morning to around 3:00 p.m.,
• the controller controls the light emitter to cause the first illumination light to have a correlated color temperature which increases in a range from 5000 K to 5800 K as time elapses during a second time period from around 3:00 p.m. to sunset, and
• the controller controls the light emitter to cause the first illumination light to have a constant color in a range from 4000 K to 5000 K during a third time period from sunset to a predetermined time in night;
• a light color detector which detects a light color, wherein the controller controls the light emitter, based on the light color detected by the light color detector, to cause the first illumination light to have a color according to color tuning control schedule information predetermined;
• and
• a storage which stores the color tuning control schedule information;
• and
• an operation input controller which operates the illumination apparatus, wherein the color tuning control schedule information is created according to a user operation on the operation input controller, and stored into the storage.

An illumination control system comprising:

• a plurality of illumination apparatuses each of which comprises a light emitter which emits first illumination light that is illumination light for illuminating a display screen, wherein:
• in a u′v′ chromaticity diagram which is a CIE 1976 uniform chromaticity scale diagram, the first illumination light has a correlated color temperature in a range from 4000 K to 5800 K, and u′v′ chromaticity coordinates in a range which satisfies 0.7125u′+0.3284<v′<0.7125u′+0.3339,
• the first illumination light is emitted onto the display screen,
• the plurality of illumination apparatuses each include an illuminance detector which detects an illuminance in a predetermined space, and
• a controller included in a first illumination apparatus changes output of the first illumination light emitted by the light emitter included in the first illumination apparatus, to cause an illuminance in the predetermined space detected by the illuminance detector included in the first illumination apparatus to match an illuminance in the predetermined space detected by the illuminance detector included in a second illumination apparatus different from the first illumination apparatus, the first illumination apparatus and the second illumination apparatus being included in the plurality of illumination apparatuses.

An illumination control system, comprising:

• an illumination apparatus comprising a light emitter which emits first illumination light that is illumination light for illuminating a display screen;
• and
• an operation input controller which receives input to operate the illumination apparatus,
• wherein, in a u′v′ chromaticity diagram which is a CIE 1976 uniform chromaticity scale diagram, the first illumination light has a correlated color temperature in a range from 4000 K to 5800 K, and u′v′ chromaticity coordinates in a range which satisfies 0.7125u′+0.3284<v′<0.7125u′+0.3339, and
• wherein the first illumination light is emitted onto the display screen.