The table lamp for students has become a hot product in the lighting market. The reason why this kind of desk lamp is suitable for students is that the technical parameters of this type of desk lamp meet the national "Performance Requirements for Reading and Writing Desk Lamps", which is what we often say is good for the eyes. Therefore, this kind of table lamp is also called eye-protecting table lamp. In view of the complexity of the eye protection table lamp market, many products are mixed, so how to choose an eye protection table lamp has become a worry for many parents. In this article, we will analyze how to choose an eye-friendly table lamp and discuss which table lamps are worth buying?
1. How to choose a desk lamp for students?
Since it is a table lamp used by students, we must take into account the specific use needs when choosing. Generally speaking, when students write their homework, they prefer light with appropriate brightness, soft light, and no glare or dazzling. Of course, as parents, we have to think more, in addition to the quality of light, we also have to consider the hazards of blue light, and consider the actual eye protection effect.
1. Light quality
The light quality of the table lamp does not simply refer to the brightness of the table lamp, but needs to comprehensively consider the actual use needs and evaluate the illumination, color rendering level, strobe, color temperature and other indicators of the product. As a simple example, the light requirements of a classroom during the day are certainly different from those of a study room at night. Considering that students' homework is generally carried out in the study room at night, the examination of the quality of light should start from the following aspects.
(1) Illuminance and illumination uniformity.
Specific requirements are made in the "Performance Requirements for Desk Lamps for Reading and Writing Operations", as shown in the figure below.
(2) Color temperature.
In the "Performance Requirements for Desk Lamps for Reading and Writing Operations", it is recommended that reading and writing activities should be carried out at a color temperature of 4000K.
(3) The level of color rendering.
The "Performance Requirements for Reading and Writing Desk Lamps" stipulates that the general color rendering index (Ra) of LED lighting fixtures should not be less than 80, and the special color rendering index (R9) should be greater than 0. In addition, the measured value of the merchant's product should not be lower than that indicated on the product label.
(4) Strobe.
The "Performance Requirements for Reading and Writing Desk Lamps" stipulates that the light output fluctuation frequency of LED lighting fixtures should not be less than 3125HZ, otherwise the human eye will catch the light flickering and produce strobe hazards.
2. Blue light hazards
Traditional LED lighting fixtures use blue light excitation technology, so it is inevitable to produce high-energy short-wave harmful blue light. Manufacturers filter out harmful blue light through technical means, so that the blue light hazard meets the relevant requirements. The "Performance Requirements for Reading and Writing Desk Lamps" stipulates that the blue light hazard level of reading and writing desk lamps should be RG0 (zero blue light hazard).
3. Actual eye protection effect
Through the above explanation, most consumers should be able to see that the general eye-protecting table lamp is not actually eye protection, but "does not hurt the eyes". A true eye-friendly desk lamp refers to a product that uses eye-protecting or eye-friendly technology. In general, red light is used to benefit the eyes. The basic principle of the red light benefit technology is to emit long-wave red light from 650nm to 680nm through professional red light beads. This kind of red light can act on the retinal cells of the eye and stimulate the metabolism of the cells, thereby slowing down the accumulation of visual fatigue, accelerating the recovery of fatigue, reducing the probability of myopia, and truly achieving the effect of eye protection. At present, there are not many products that use this technology, so consumers who want red light eye protection function need to carefully identify and choose to ensure that they can choose a real red light eye protection table lamp.
2. What are the eye-protecting table lamps worth buying?
1. Philips A7 Xuanyuan
A7 Xuanyuan adopts AA illumination, wide-area illumination, and uniform natural light to give users a more comfortable lighting experience. The safety of A7 Xuanyuan is fully in line with national standards, and there is no blue light hazard and no video flash hazard. In addition, this product also adds functions such as automatic brightness, seat sensor switch, efficiency timer, and intelligent APP interconnection, which greatly increases the convenience of consumers.
2. Comic Book Rain K1
Compared with the parameters of various technical indicators, Manshuyu K1 can be said to be not weaker than any product in the market. The illumination and uniformity of the K1 eye-protecting desk lamp can reach ≧634LX and 1.90 respectively, the color rendering index can reach Ra 98 and R9 92, and the light output frequency can reach 9927HZ, far exceeding the standard value of 3125HZ. In addition, this product has also made great efforts in blue light protection, using violet light excitation technology to eliminate blue light hazards from the root. At the same time, Manshuyu K1 also adopts red light eye protection technology, using the same technology as the red light eye protection device in the medical field to give better eye care and help users effectively prevent myopia.
3. Honeywell X5
Honeywell is committed to creating classroom-level professional eye care products. In terms of X5, Honeywell adopts a more professional lighting design and uses diamond-level certified light sources to create a classroom-level light environment with large desks, so that users can feel like learning in the classroom. Honeywell has also cooperated with Huawei to create a more intelligent desk lamp product, and the X5 can automatically turn on and off the lights when entering and leaving the seat, and automatically detect ambient light.