Lighting device, local device, lighting control system, and lighting control method

A lighting control system, comprising:

• a plurality of lighting devices each including visible light sources for emitting visible light based on dimmer levels of the visible light sources;
• at least one local device including a visible light sensor for measuring an amount of visible light in the at least one local device, one of the lighting devices and the at least one local device including an invisible beam source for emitting invisible beams simulating characteristics of visible light, and another of the lighting devices and the at least one local device including an invisible beam sensor for measuring an amount of invisible beams emitted from the invisible beam emitting source;
• and
• a controller configured to acquire an influence coefficient of each of the lighting devices on the at least one local device based on the measured amount of the invisible beams and the measured amount of visible light, the influence coefficient representing an influence level of the lighting devices on the at least one local device, and to acquire a dimmer level of each of the visible light sources based on a corresponding one of the influence coefficients to control the amount of the visible light measured at a position of the at least one local device such that the measured amount of the visible light reaches or approaches a target lighting amount in the at least one local device.

A lighting device, comprising:

• visible light sources for emitting visible light to at least one local device based on a dimmer level thereof;
• an invisible light beam emitting source for emitting invisible beams simulating characteristics of visible light;
• an invisible beam sensor for measuring an amount of invisible beams emitted from the invisible light beam emitting source, the invisible light beam emitting source and the invisible beam sensor being located inside the at least one local device;
• and
• a lighting device controller configured to acquire an influence coefficient of the lighting device based on the measured amount of invisible beams and an amount of visible light measured by the at least one local device, the influence coefficient representing an influence level of the lighting device on the at least one local device, and to acquire a dimmer levels of the visible light sources based on the influence coefficient to control the amount of the visible light measured at a position of the at least one local device such that the measured amount of the visible light reaches or approaches a target lighting amount in the at least one local device.

A local device, comprising:

• a visible light sensor for measuring an amount of visible light emitted from a plurality of lighting devices;
• an invisible light beam emitting source for emitting invisible beams simulating characteristics of visible light;
• an invisible beam sensor for measuring an amount of invisible beams emitted from the invisible light beam emitting source, the invisible light beam emitting source and the invisible beam sensor being located inside each of the lighting devices;
• and
• a local device controller configured to acquire an influence coefficient of each of the lighting devices on the local device based on the measured amount of the invisible beams and the measured amount of visible light, the influence coefficient representing an influence level of each of the lighting devices on the local device, and to transfer target dimmer levels of respective visible light sources to the lighting devices based on the acquired influence coefficients to cause the visible light amount measured by the local device to reach or approach a target lighting amount in the local device.