In life, many parents are always struggling with whether the light is better white or yellow when their children read and write, for fear that the adjustment is not suitable and will affect their children's eye health. As parents, we must first understand that "yellow light, white light" is actually a popular term for the color temperature level. It's not so much about tuning different colors of light as it is about choosing the right level of color temperature. So what is color temperature? How should parents choose the color temperature level of the table lamp? And how to choose an eye-protecting table lamp? Let's get it clear.
1. What is color temperature? How do parents choose the color temperature level of the table lamp?
1. Color temperature definition
Color temperature is a quantitative way of describing the color of a light source in Kelvin (K). The color temperature value is directly related to the color of the light we see: the high color temperature (about 6000K or more) presents a cool white close to the noon sun, giving people a fresh and spiritual feeling; On the other hand, the low color temperature (about 3000 K) tends to be a warm yellow, creating a cozy, relaxing atmosphere.
Scientific studies have found that color temperature plays a significant role in the regulation of the body's biological clock, the impact of emotional state, and the clarity of vision during specific tasks. Especially for children, the correct color temperature can not only protect their young eyes, but also promote healthy growth and improve learning efficiency.
2. How do parents choose the color temperature of the table lamp?
Parents choose the color temperature level of the eye-protecting table lamp only need to follow one principle: choose according to your needs.
First of all, it is necessary to understand the optimal color temperature for different activities: 4000K color temperature is recommended for learning and reading; Before resting or sleeping, it is recommended to use warm colors below 3000K.
Secondly, understand the operation and use of adjustable color temperature products: for parents who have purchased adjustable color temperature products, they must understand the performance of the selected table lamp, and know which gears represent what level of color temperature, so that they can be adjusted on demand.
Finally, for the average consumer, it is not necessary to choose a product with adjustable color temperature. If the desk lamp is only used for reading and writing at night, then the constant 4000K color temperature product can fully meet the demand, and consumers no longer need to spend a higher cost to buy a product with adjustable color temperature function. For example, Manshuyu K1, Shuke L2PRO, etc. all adopt a constant 4000K color temperature design, which has not affected the sales of these products in the slightest.
2. How do ordinary consumers choose eye-protecting table lamps?
In addition to the color temperature levels mentioned above, consumers should also consider the following factors when buying table lamps.
1. Illuminance and illumination uniformity
Illuminance refers to the luminous flux per unit area and measures the intensity of light. The national recommendation for reading and writing jobs is at least 500 lux, but the actual value should be higher for a better visual experience.
Illuminance uniformity refers to the ratio of maximum illuminance to average illumination in the lighting area, and the national standard recommends that the uniformity should be less than 3. An excellent eye-protecting desk lamp should ensure that the light is evenly distributed throughout the reading area, avoid local over-brightness or over-darkness, and reduce eye pressure.
2. Color Rendering Index (CRI)
The color rendering index reflects the ability of the light source to reproduce the true color of the object, and the higher the CRI value, the more realistic the color reproduction. For reading and fine assignments, a CRI of at least 90 can reduce eye discomfort caused by color distortion.
3. Strobe protection
Although the flicker phenomenon is difficult to detect with the naked eye, long-term exposure can exacerbate eye fatigue and even cause headaches. When purchasing, you need to pay attention to whether the product has passed the flicker-free certification to ensure the safety of use.
4. Blue light hazard level
Although blue light is a part of natural light, excessive exposure to high-intensity blue light can cause damage to the retina, especially in children, whose lenses are thinner than those of adults, and cannot completely block blue light. Therefore, the preference is given to eye-friendly desk lamps marked with the "RG0" level, which means that the risk of blue light is almost zero. It should be noted that some table lamps such as Manshuyu K1 and Berman Halo PRO use purple lamp beads to excite, and their blue light protection effect will be better, which is more worthy of consumers' choice and trust.
5. Red Light Eye Protection Mode
In recent years, red light therapy has gained attention for its potential benefits for improving vision, relieving dry eyes, and more. Some high-end eye protection desk lamps have an integrated red light mode, which can be used between study and work, helping to reduce eye fatigue and maintain eye health. As a result, consumers can prioritize products that incorporate red light eye protection.