LIGHTING SYSTEM AND PORTABLE TYPE TERMINAL APPARATUS

PROBLEM TO BE SOLVED: To provide a technique capable of reducing consumption power of a portable type terminal apparatus to be used for a lighting system.SOLUTION: A lighting system 1 comprises: an illumination section 11 having a light source 12 capable of performing lighting control and color matching; and a remote control section 31 having an optical sensor 32 for measuring an optical environment obtained by the light source 12, and a remote control side transmission/reception section 35 for transmitting a detection signal of the optical sensor 32 to the illumination section 11. The remote control section 31 comprises a drive control section 33 for limiting a transmission operation from the remote control section 31 during a stable period for which a predetermined index value reflecting the detection signal satisfies a predetermined determination condition, thereby it is determined that variation of the index value is small.