Many people have given a lot of professional data and evaluations on the purchase of desk lamps, but those are only tests that can be done by professional institutions, and many times when we buy desk lamps, we mostly experience the purchase on the Internet or in physical stores. In order to buy a more reliable eye protection lamp, you can try this simple method: 1 look, 2 try, 3 shots.
1. Watch
a) Look at the light-emitting surface. It is best to choose a surface light source with a larger light-emitting surface, so that the light uniformity will be better. It is necessary to avoid the light emitting area is small, the energy is concentrated, the light is dazzling, and there is dazzling reflection on the table.
b) See if the light is dimmable or the height can be adjusted. Different people have very different sensitivity to light. Therefore, it is important to adjust the illumination of the desktop by adjusting the light or adjusting the height, so as to achieve a comfortable state for your eyes. There are still more LED desk lamps with dimming function on the market.
c) Look at the nominal color temperature of the lamp. Warm light is easy to make people drowsy, which is not good for reading, white light and blue light are too much, and use at night is not good for sleep, so about 4000K is more suitable.
d) See if there is a 3C mark, which can generally be seen on the lamp body or power supply of the desk lamp. CCC is the "China Compulsory Certification", which has been implemented since September 1, 2009, and implements a compulsory certification system for products related to human health and safety, animal and plant life and health, and environmental protection and public safety. With the 3C logo, it means that the electrical safety of the lamp is guaranteed.
2. Try
This is to test the color rendering performance with bare hands. Reach out your hand and put it under the light to see if your palm is bloody pale or ruddy. If it is pale, the color rendering performance is poor, and if it is ruddy, the color rendering performance is good. The effect of the same hand under the three different color rendering properties, the hand under the CRI 95 light is obviously redder than the hand under the CRI 65 light, and the color of the hand under the CRI 65 light is obviously distorted. Lights with good color rendering can reduce eye fatigue.
3. Shoot
Shooting refers to using your mobile phone to switch to the camera mode, facing the light, if the light flashes, you can see light and dark stripes. Or you can turn the phone to the video mode and face the light. If the light has a strobe, you can see that it is constantly flickering. If there is no strobe, the light is very stable. Through these three simple methods, it is of great help to purchase high-quality eye-protection desk lamps. Don't make mistakes in the shape and appearance of the color.
