How to choose the table lamp that suits you

Table lamp can be said to have in every family, so how to choose a table lamp that suits oneself? Xiao Bian shares the following tips with you here:

There are four general types of light sources for writing desk lamps: incandescent lamps, tungsten halogen lamps, fluorescent lamps, and LEDs. Three types of light sources have their own advantages and disadvantages. Different people may prefer the light color and brightness of different light sources. In order to be able to project most of the light onto the table, the light source of the writing desk lamp is usually mounted horizontally or downwardly.

When the writing desk lamp is selected, in addition to checking the optical performance, it is also checked whether or not the other performance is acceptable.

One pull, two shifts, three shakes, four touches. “Pull” refers to pulling the plug of the power cord away from the socket and pulling the power cord to the outside of the lamp chamber to see if the connection of the power cord is firm. The power cord cannot be detached from the lamp chamber. “Adjustment” means adjusting the various working positions of the desk lamp. When adjusting, no sound can be generated. After adjustment, the working position should be able to be locked easily and reliably. “Shake” refers to adjusting the desk lamp to the most unfavorable working position, and then gently shaking the plane where the desk lamp is placed to see if the desk lamp is easy to tip over. If the desk lamp is not smooth, it is easy to fall over. "Touch" refers to lighting the desk lamp for a period of time (2 hours), and touching a lamp cover or the like to touch the heat-generating component that is easily accessible during use is not hot to prevent accidental burns in the future.

Many parents buy eye protection lamps for children in order to protect their eyesight. In fact, whether these lamps have eye protection effects still lacks solid and scientific evidence. Therefore, if you want to protect your eyesight, the key is to learn to use the desk lamp correctly, rather than blindly looking at the eye lamp. How to use the desk lamp correctly? Here we come to understand together:

First, the degree of light bulb should be appropriate. If the degree is too low, the light on the book is dark, and we cannot easily see the handwriting. This can cause asthenopia. If it takes a long time, it will lead to myopia. When it comes to treating myopia, it becomes a daily necessity. If the bulb is too high, excessive light will be reflected in our eyes through the white paper surface, causing glare and the pupil to shrink continuously, causing eye pain and headache. In general, the 25-45-watt incandescent lamp is most suitable for brightness.

Second, the height of the table lamp is also very important. Usually, when the eyes are 30 centimeters from the book, they can not only read the handwriting but also do not fatigue. As a result, the height of the table lamp is 40-50 centimeters written. This will not only ensure sufficient reading lighting, but also have a certain surrounding environment. The brightness. If the desk lamp is too low, it will cause the light to shine too small and the surroundings will be dark. Losing the reference for far-sightedness will cause the eye's various adjustment systems to be in a state of tension and compression that only looks at the near place, which can easily cause eyes to fatigue and quickly accumulate, causing “light-source myopia”. If the desk lamp is too high, the light will directly shine on our eyes and cause glare; at the same time, the close-range glare will cause the phenomenon of light retention on the retina, which will shrink the eye muscles and accelerate vision loss. Therefore, the treatment of nearsightedness is usually necessary. Also have some control.

Third, the size of the light bulb must be matched with the lampshade. It must be ensured that the light bulb is properly covered in the lampshade and light is not directed at our eyes.

Fourth, use a white light bulb. Scientific research has confirmed that we have the best vision in white light. Therefore, we should choose incandescent or matte lights that emit soft, uniform white light instead of color bulbs.