Can smart eye-protecting desk lamps really protect eyes? Here are some more suggestions on choosing a desk lamp

Can smart eye-protecting desk lamps really protect eyes? Here are some more suggestions on choosing a desk lamp

At present, the myopia rate among children and teenagers is increasing year by year. Besides eye hygiene and genetic factors in daily life, the cause of myopia is also closely related to light. As companions for reading at night, all types of desk lamps nowadays are filled with beautiful things and their prices vary greatly. How to choose a desk lamp correctly? What should I pay attention to when using a desk lamp?

First of all, we need to figure out what our country needs? What we need is a desk lamp that can be used for studying and reading to protect our eyes from damage. Let's first take a look at the comparison of several types of table lamps

Incandescent lamp

Incandescent bulbs are partially yellow, generally lack brightness, and have a serious flickering phenomenon. In high temperatures, especially in the muggy summer, they can easily make people feel irritable. Although it is full-spectrum, due to its low luminous efficacy, it has gradually been phased out of production and sales.

Eye-protecting lamp

A good eye protection lamp uses three primary color bulbs. A good three-color bulb has a better color reduction effect than ordinary energy-saving lamps, and it also has higher brightness and softer light.

Some eye-protecting lamps claim to be flicker-free. In fact, it is to increase the current frequency through high-frequency electronic ballasts, making the flickering of the light reach a frequency that is difficult for the human eye to recognize, but this only makes the eyes relatively comfortable.

LED desk lamp

LED table lamps use LED semiconductor light sources. The characteristics of semiconductor light sources determine that they must be powered by direct current to function, which eliminates the need for stroboscopic lamps. They are small in size and have a long service life. However, bead chips and driving power are the key technologies. The market is even more chaotic, with a wide range of good and bad products.

In fact, each of these three types of desk lamps has its own advantages and disadvantages. It is very important to identify the products certified by the state and purchase them through regular channels. In addition, attention should also be paid to its usage.

1. It is necessary to master the brightness distribution within the field of view well

Some families, in order to save electricity, have their children learn to only turn on the desk lamp. Sometimes, if you are worried that the brightness information is not sufficient, you will switch to a lamp tube with a higher wattage. If the light is only on under a desk lamp (eye-protecting lamp), and the surroundings are dark or the illuminance under the desk lamp is very high, while the illuminance in the non-reading area is very low, the eyes have to constantly adapt and adjust to the contrast of too high or too low brightness within the field of vision, which can also easily cause visual fatigue and, in turn, easily induce myopia. Generally speaking, in addition to turning on a desk lamp, it is also necessary to provide a relatively soft background lighting, which can improve eyesight and reduce visual fatigue.

2. Avoid glare interference in the reading area

Indoors, direct glare from lamps should be avoided, and the uniform glare value should comply with national standards. In some home decorations or desktop materials such as metal and glass plates, the indirect glare caused by mirror reflection can lead to subjective reactions of visual discomfort, and sometimes it is even difficult to see the details of the characters in the book. Some children, due to their young age or poor subjective response, are exposed to glare for a long time, resulting in a sharp decline in their vision.

3. Home decoration should make full use of natural light

The desks for primary school students to read and do homework at home should be placed as close as possible to the light Windows.

4. The height of the lamp is also very important

Usually, when the eyes are 30 centimeters away from the book, the handwriting can be seen clearly and there is no excessive fatigue. Based on this calculation, it is appropriate for the height of the desk lamp to be 40 to 50 centimeters away from the desk.

Generally, the distance between them is 30 to 45 centimeters, and the light forms a 45-degree Angle with the line of sight. In this way, sufficient reading lighting is ensured, and the surrounding environment also has a certain degree of brightness. Because Chinese table lamps are typical point light sources, the contrast between light and dark can vary greatly depending on the distance. If a table lamp is too low, it will cause the ambient light to reach a very small area, while the surrounding area will be pitch black.

5. The placement of a desk lamp also has a significant impact on eyesight.

Since most of them write with their right hands, the desk lamp should be placed in front of the left side of the students' bodies. When writing, there won't be a shadow formed due to the hands blocking the paper, and the light shining on the paper won't be reflected into our eyes and cause glare. Of course, in interior design, lighting should not be blocked by objects either, so as not to fail to serve as the social background light for the reading area.