How to use the desk lamp correctly?
|Today, there are many types of lamps, and the bulbs are divided into: energy-saving lamps, incandescent lamps, and LED bulbs. Control methods include: switch control, touch control, brightness adjustment, and even voice control. But what consumers need is a practical, energy-efficient, and reliable product. Under the “Eleventh Five-Year Plan” of the country, the promotion of LED and other energy-saving products has been further promoted.|
The height of the desk lamp is also very important. Usually, when the eyes are 30 cm away from the book, they can not only see the writing, but also do not fatigue. It is estimated that the height of the desk lamp is 40-50 cm in length, so as to ensure sufficient reading illumination and the surrounding environment is also certain. Brightness. If the desk lamp is too low, it will cause the light to be too small and the surroundings will be dark. Losing the reference object for far-sightedness, the eye's various adjustment systems are in a tight compression state that only looks close, and it is easy to make the eyes fatigue and accumulate rapidly, resulting in "light source myopia." And if the desk lamp is too high, the light will directly shine into our eyes and produce glare. At the same time, close-range glare will cause light retention on the retina, which will make the eye muscles tighten and accelerate the decline of vision, so it usually treats myopia. Also have some mastery.
The placement of the desk lamp also has a great impact on vision. Because most people write with their right hand, the desk lamp should be placed on the left front of the body. When writing, it will not form a shadow on the paper because of the cover of the hand. The light shining on the paper will not reflect into our eyes and cause glare. In this way, it will not affect my vision and cause problems such as myopia.
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