... 000 hours Kson led ceiling light 9 W ORSAM LEDCeiling lamps specially made in Kson applied plane-emitting LED plane source without glare, ... shadowing to make lamp ray uniform.Compared with LED point source, this bulb light has best heat rejection efficiency, less luminous decay ... sacrificed when we wish eliminate glare of point source bulb, the LED plane source bulb can emit uniform, soft ray to ...