What's the difference between a desk lamp and a household lamp?

The traditional desk lamp is lit with 50HZ AC signal, which has light and dark changes (that is, stroboscopic), and the brightness of light is unstable and discontinuous. In addition, incandescent lamp and quartz lamp are both point light sources with uneven illumination, which is easy to produce shadows. These problems easily lead to visual fatigue and myopia. The human eye grows in natural light. The best reading light source for people is the natural light scattered around 10 am. It has the following physical characteristics.

1, continuous illumination, no light and shade change, that is, no stroboscopic.

2. The color temperature is about 5000K (the color temperature is low, the light is red, and the color temperature is dazzling white. The color temperature of natural light is 2000K-3000K at dusk and close to 7000K at noon.

3. It is a mixed light composed of red, orange, yellow, green, cyan, blue and purple visible light in a certain proportion.

4, scattered light, no shadow.