No matter whether the desk lamp uses white light or warm light, it is inevitable for children to do homework at night because of their heavy academic burden. Therefore, it is necessary to prepare a desk lamp for children to do homework at night. But there are many kinds of lamps, whether white or warm.
Whether the table lamp uses white light or warm light 1 whether the table lamp uses yellow light or white light is mainly determined by the color temperature. When the color temperature rises to a certain extent, the color begins to change gradually from crimson-light red-orange yellow-white blue.
During the day, the color temperature of the sunlight that we are in close contact with is not a constant value, which varies from 3 thousand K to 7 thousand K, so we can use any color temperature of the desk lamp during the day. There is no such thing as "yellow light is better or white light is better".
Only at night, because the color temperature is too high, it will affect sleep, so yellow light with low color temperature is better than white light with high color temperature.
Generally, the higher the color temperature, the cooler the color of light, and the higher the blue light content. Blue light is a sensitive light that regulates the circadian rhythm. The existence of high-intensity blue light will inhibit the secretion of melatonin, which is a neuroendocrine hormone that we must have when we sleep.
We need to sleep at night, and we should not let blue light inhibit the secretion of melatonin, making it difficult for us to fall asleep. To this end, when using the desk lamp to do homework and work overtime at night, we need to lower the color temperature of the desk lamp and reduce the blue light content that interferes with sleep until the light color turns yellow.
In the national standard for reading and writing lamps, the suitable color temperature value of table lamps at night is specifically mentioned. Regarding the product information of table lamps, if the upper limit of the nominal correlated color temperature range of LED lamps with adjustable color temperature exceeds 4000K, there should be a warning including the following contents: It is recommended to adjust the color temperature below 4000 at night. LED lamps with adjustable color temperature and nominal correlated color temperature higher than 4000K shall have the following warning: This lamp is not suitable for night use.
Therefore, in order to ensure the quality of sleep at night, the color temperature of the desk lamp should be adjusted below 4000K, yellow. If you just work overtime at night, you'd better buy a 3000K yellow desk lamp, the blue light content is low enough, and the brightness of the 3000K desk lamp is enough.
Whether a desk lamp is good or not does not depend on yellow or white light, nor can we choose a desk lamp just by looking at the color temperature. As far as the picture is concerned, the color temperature is also 3000K, but the spectra of these two lamps are different, which means that the color temperature is the same and the quality of the light source may be different.
To judge the quality of a desk lamp, the key point is not to have direct light, and the shading is better. More than 90% of the eye protection lamp shapes on the market are inseparable from the following two types. A desk lamp of this shape has poor shading performance, and there must be direct light entering the eyes at the moment when you look up carelessly at work or study.
The desk lamp is different from the lamp hanging on the roof, which is far from the eyes. The distance between the desk lamp and the eyes is only 30-50cm, which is very close. If the desk lamp is not well shaded, the direct light of the desk lamp will irritate the eyes, and the distance is too close and the energy is very large, which is very easy to hurt the eyes. A desk lamp of this shape, like the one above, is not good in shading, and it will definitely produce direct light to hurt the eyes. When choosing a desk lamp, don't choose this one. Choose a desk lamp with good shading, and then choose the color temperature of the desk lamp according to the time period of use.
White or warm light of table lamp 2. Which is more eye-protecting, yellow or white?
1, yellow light
Warm light is yellow light. For people who use desk lamps for a long time, yellow light will save more energy than white light. Therefore, yellow light is generally an energy-saving lamp, with small radiation, which reduces the cost of electricity. In fact, for most people, white light or yellow light is mainly used in space, and yellow light is preferred in bedrooms and living rooms because it is warmer and more emotional.
2. White light
Many people are struggling whether it is white light or yellow light when buying a desk lamp, but most people are more comfortable with white light. In fact, reading in white light is more eye-protecting. As long as the illuminance is adaptable, not too short and not too high, it can be within the acceptable range of human eyes. Therefore, it is not yellow light that must protect the eyes.
3. White light eye protection or warm light eye protection
The color temperature also determines the eye protection ability of the desk lamp, so whether it is yellow light or white light, as long as the light is stable and the color temperature is within the range, the eyes can look comfortable. Yellow light is not so dazzling, if it is similar to bedside lamp, as long as it is white light.
Second, use white light or warm light for homework.
Relatively speaking, it is better to use warm light when doing homework, because the light of warm light is yellow, the spectral distribution is the same, and the brightness is relatively stable, so it is suitable for doing homework. When choosing a light source, as long as the brightness is appropriate, it will not cause desktop reflection, and too bright light will also cause visual fatigue. It is also easy to stab the eyes. If possible, try to do your homework in natural light without direct sunlight.
Top ten brands of white or warm light 3 eye protection lamps for table lamps: Saiduo
Saiduo lighting is a world-class high-quality lighting. Saiduo's lighting products have both classical luxury and low-key temperament and modern fashion and smart style. You can strongly feel the heavy historical traces and cultural details, while abandoning the complicated texture and decoration and simplifying the lines.
Top Ten Eye Protection Lamp Brands: Opal
Opal lighting is a well-known brand-name product in the lighting industry, which has won many patents and authoritative certification in China, advanced production equipment and strict quality inspection system. Op now has a wide range of products, and eye protection lamp is also a very important product with good performance.
Top Ten Eye Protection Lamps Brands: Philips
Royal Philips Electronics is a global leader in quality life. You may know many of Philips' products, and Philips eye protection lamps are well-known. Friends who have used Philips products generally think that Philips is very good.
Top ten brands of eye protection lamps: Guanya
Guanya is a product brand produced by Zhongshan Sunshine Electric Appliance Co., Ltd., and its main products are movable eye protection lamps, fixed lamps and some electronic energy-saving lamps. Originally, Zhongshan was the lighting capital of China, and Guanya's products were still very trustworthy.
Top ten brands of eye protection lamps: Mingkeda
Mingkeda is one of the earliest manufacturers of lamps in China, and it is the first high-power fluorescent desk lamp in the world. The products are exported to the whole country, and the performance and quality of the products are very high, because its own enterprises have more advanced production equipment.
Top Ten Eye Protection Lamps Brands: OSRAM
Many people should know more about the brand Osram. Osram is a German lighting expert. Founded in 1906, it has a history of one hundred years. At present, OSRAM's motor vehicle lighting is the first brand in the world, and eye protection lamps are also very powerful products.
Top ten brands of eye protection lamps: Huayi
Huayi Lighting is located in Zhongshan Ancient Town, the furniture capital of China. After more than 20 years of development and adhering to the professional and high-quality route, Huayi has become a well-known comprehensive lighting brand in the industry, with a wide range of products, which is a model of green energy-saving lamps in China.