Led lamp, good point light source or surface light source
Desk lamp to see is to choose lamp holder types use the bedroom or in the study, the study USES led is very good choice, monochromatic light color cold light source, can help clear your mind to learn reading; But the bedroom use or suggest using incandescent lamp, mild color, adjust the mood to sleep. Get to the point, it is recommended to use surface light source, light area is larger, help reading and prevention of myopia.
Not good surface light source,, the advantage is that the good anyway
Led has blue light damage, not only with long time eye fatigue This is my least favorite Use dc after light lamp, now is very good Basic do not have the feeling of fatigue
