Refers to the light / living

The “Refers to the light ” uses the principle of infrared projection onto the ground , So since in the daily life , we can know the bus is a few road is coming . even if we do not look up at it , so we do not miss the bus .Especially the elderly because their eyesight is poor , it is a difficult time to see clearly the numbers on the bus , when they look up easy to feel dizzy and there is no anyone to ask .Therefore they always take the wrong bus .If in the evening , the infrared projection onto the ground will more obvious and more clealy The ”Refers to the light“ infrared projection onto the ground is only when the bus to a station