Do you want to improve the sensitivity of the bees on the flowers?

Light perception means that in front of your eyes 1m, you can only perceive light but can't recognize the shaking of your fingers. Most blind people retain residual vision and light perception. Generally speaking, absolute brightness is meaningless, but relative brightness is more meaningful. Relative brightness refers to the contrast between light intensity and background, which is called relative value. In a dark background, the light with low brightness can be seen clearly, but in a bright background, the same light may not be seen. This phenomenon can be illustrated by the example that the stars cannot be seen during the day. According to the characteristics of light perception, in visual design, in order to make light or some information composed of light easily felt by people, it is necessary to improve its difference from the background and increase the area of light. On the contrary, if we don't want to do this, we should handle it in the opposite way. The key to the problem is not the absolute brightness of light, but its difference from the background and the size of the area.