Red light is also used by many outdoor people, especially in Europe and the United States. Night hunting are popular in many countries in Europe and America. Red light hunting flashlights are popular among European and American hunting enthusiasts. The human retina contains two kinds of photosensitive tissues: pyramidal cells, rod cells, pyramidal cells to distinguish colors, and rod cells to distinguish contours.
The reason why people can produce color is precisely because of the pyramidal cells that are present in the retina. Many animals have only rod cells or few pyramidal cells, resulting in color insensitivity or even no color perception.
Many animals are particularly insensitive to red light. When hunting at night, they can use the red light flashlight to sweep unscrupulously and let the prey unconscious, greatly improving the efficiency of hunting.
Domestic outdoor enthusiasts rarely have the experience of hunting, but the red light is still a very useful light color in outdoor activities. The eye is adaptable – when the illumination color changes, the eye needs an adaptive adjustment process to adapt.
Adaptation is divided into two types: dark adaptation and bright adaptation. Dark adaptation is a process from light to dark, which takes a long time. Bright adaptation is a process from dark to bright, which takes a short time.
When we use the white light flashlight for outdoor activities, when the line of sight changes from bright to dark, it is a dark adaptation, it takes a long time, there will be a short “blindness”, and red light takes a short time in dark adaptation. It is a good way to avoid the short-term “blindness” problem, let us better treat our eyes and maintain good night vision when we are at night, so the red light hunting flashlight is more suitable for hunting at night!