Lighting system and controller

A lighting system comprising:

• a plurality of lighting devices;
• a controller which controls each of the plurality of lighting devices;
• a sensor which detects brightness of a region illuminated by at least two lighting devices among the plurality of lighting devices;
• and
• a communication terminal which communicates with the controller, wherein:
• the plurality of lighting devices each include:
• a light source;
• and
• a light source controller which controls the light source in accordance with an instruction transmitted from the controller,
• the communication terminal includes:
• a receiver which receives input of a predetermined dimming level and a target value of the brightness of the region;
• and
• a communicator which transmits, to the controller, the predetermined dimming level and the target value received by the receiver,
• the controller includes:
• a storage storing the predetermined dimming level and the target value transmitted by the communication terminal;
• and
• a lighting controller operable in a plurality of operation modes, the plurality of operation modes include a sensor mode for controlling the at least two lighting devices to cause the brightness of the region to approach the target value, and
• when the lighting controller obtains an instruction to operate in the sensor mode, the lighting controller performs (a) transition control for controlling the at least two lighting devices, by transmitting a transition instruction, to cause the at least two lighting devices to provide illumination at the predetermined dimming level, without using a result of detection by the sensor, and (b) dimming control for controlling the at least two lighting devices to cause the brightness indicated by the result of detection by the sensor to approach the target value, after transmitting the transition instruction.

A controller which controls each of a plurality of lighting devices, the controller comprising:

• a storage storing a predetermined dimming level and a target value of brightness of a region illuminated by at least two lighting devices among the plurality of lighting devices;
• and
• a lighting controller operable in a plurality of operation modes including a sensor mode for controlling the at least two lighting devices to cause the brightness of the region to approach the target value, wherein:
• when the lighting controller obtains an instruction to operate in the sensor mode, the lighting controller performs (a) transition control for transmitting, to the at least two lighting devices, a transition instruction to provide illumination at the predetermined dimming level, without using a result of detection by the sensor which detects the brightness of the region, and (b) dimming control for transmitting, to the at least two lighting devices, a dimming control instruction to cause the brightness indicated by the result of detection by the sensor to approach the target value, after transmitting the transition instruction.

A lighting system comprising:

• a plurality of lighting devices;
• a controller which controls each of the plurality of lighting devices;
• and
• a sensor which detects brightness of a region illuminated by at least two lighting devices among the plurality of lighting devices, wherein:
• each of the plurality of lighting devices includes:
• a light source;
• and
• a light source controller which controls the light source in accordance with an instruction transmitted from the controller,
• the controller includes:
• a storage storing a transition dimming level and a target value of the brightness of the region;
• and
• a lighting controller operable to control the lighting devices in a plurality of operation modes,
• the plurality of operation modes include a forced control mode and a sensor control mode,
• in the sensor control mode, the lighting controller controls the at least two lighting devices to cause the brightness of the region to approach the target value by using a result of detection by the sensor,
• in the forced control mode, the lighting controller controls the at least two lighting devices to cause the lighting devices to operate at the predetermined dimming level, without using the result of detection by the sensor, and
• when the lighting controller obtains an instruction to equalize the at least two lighting devices, the lighting controller controls the at least two lighting devices in the forced control mode, and thereafter transitions to the sensor control mode.