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To read at night to take notes or diary, perhaps your side will have a bright lamp, but give you bring convenient at the same time, perhaps the light are also influencing the next to you for the rest of the wife or colleagues, classmates, in fact, you need not too bright, as long as the writing area see clearly enough. In order to solve this problem, the design will be led into the pen body, and in the evening, it won't be like lamp as bright, but enough to let you see clearly to read and write area, also can reduce the influence of light pollution to others, and save energy.
Nan Chang University
Nan Chang, China