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Question:

LED street lights around 2800K, the highest color temperature, how many lumens per watt?

LED street lights around 2800K, the highest color temperature, how many lumens per watt?

Answer:

The light loss of the lens and the mask two is about 10%, and the light effect of LED is only 117LM/W, and the power loss is even lower. All of the lights need to be achieved 120lm/W, basically impossible to achieve.
The best lamp can do 140 lumens, but to do the whole lamp 120 is basically impossible, the restricting factors of power supply and the other is unable to achieve this level
Now LED 2800K color temperature, the maximum light effect is about 130LM/W

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