Don't be deceived by the eye protection lamp, how to choose is the key!
For friends who often write, draw and read, desk lamps are one of the essential supplies. Although there are many so-called eye protection table lamps on the market, in fact, the quality of many of these products is not good enough, and if they are used too much, they will hurt the eyes.
How to judge whether the eye protection effect of table lamps is real or boasted by unscrupulous merchants? The following are several parameters that must be learned and understood before purchasing table lamps for study and work organized by eye protection table lamp manufacturers, as well as a few things to understand related knowledge.
Color temperature
The color temperature of the study lamp cannot exceed 4000K. This color temperature value is almost equivalent to the sun at 8 o'clock in the morning, which is the most comfortable for the eyes. Exceeding the color temperature of this stage will cause greater damage to the eyes.
Illumination
Illuminance is the intensity of light, which refers to the luminous flux of visible light received per unit area. The national standards for illuminance are A-level and AA-level, the latter is better for eye protection.
Color rendering index
The color rendering index refers to the index that can correctly express the original color of the material. The closer the value is to 100, the better the color rendering. If it is a work that requires accurate color contrast, such as painting, the color rendering index needs to be above 90.
Blu-ray
The blue light hazard safety levels of LED light source products are RG{{0}}, RG1 and RG2 from high to low, with RG0 being the best.
Strobe
Flicker is the constant fluctuation of light during the switching cycle. High-frequency flashing lights can cause a lot of damage to the eyes. The method of judging the strobe situation of the station is very simple: turn on the camera of the mobile phone and face the light to see if there is any flickering phenomenon. A good quality desk lamp has no flicker.
glare
Glare refers to the visual conditions that cause visual discomfort and reduce the visibility of objects due to unsuitable brightness distribution or extreme brightness contrast in space or time. Glare is not only harmful to people's eyes, but also affects emotions.
In order to reduce glare, some table lamp shades have specially built-in lattice reflectors to reduce the brightness contrast between illuminated areas and non-illuminated areas, thereby protecting eyes. Eye protection table lamp manufacturers recommend that you try to choose table lamps with these devices when purchasing.
