Now, LED flashlight can throw different colors of lights, the wavelengths are also different, energy consumption different, in practice, they are not the same. Currently LED flashlight light colors mainly include white, yellow, red, and blue lights, violet light LED does not belong to the scope of the discussion here .

1, white light.

White LED flashlight is the most widely used one, white is close to the sun, in darkness, white lighting is more in line with the visual experience of our eyes, so the eyes do not need to spend much time to adapt, your eyes should be the most comfortable. And in terms of brightness and color temperature, white color is higher than other lights, giving the most intense and bright feel.

2, yellow

Yellow light is mostly used in jade identification LED flashlight, yellow light is different from that emitted by incandescent bulbs. Strictly speaking, the latter is a white, but because the color temperature is lower and shows warm yellow . And according yellow light from jade identification flashlight is not kind of a mixing light, which features the least refraction, scattering, and therefore, it has strongest penetration. Thanks to this feature, the fog light for car is yellow light.

3, red.

Red is widely used in outdoor hunting activities, for good results. This is mainly because a lot of animals have few stem cells or pyramidal cells, resulting they are not sensitive in color or no color vision . Hunting at night they can do anything to let prey mysteriously, greatly improving the efficiency of hunting with red flashlight.

For non-hunting friends, outdoor activities are also useful in the red light color. Red light to the human eye has good adaptability, when the illumination color light changes, the eyes need to adjust an adaptation process so that we can adapt. When we use white flashlight lighting in outdoor activities, when the line of sight to the transition from light at the dark, are dark adaptation, it takes a long time, there will be a brief “blind”, and red requires a shorter time when dark adaptation, well to avoid the temporary “blindness” of the problem, let us treat nocturnal better when our eyes and maintain good night vision.

4, blue light.

In fact, most of the white light LED flashlight is an integral part of the blue, in fact, the white LED illumination by blue LED phosphor to produce white light. Compared to white light, the blue light is softer, not so strongly reflected glare even feel, in addition to Blu-ray also has a special skill, animal blood in the faint blue light will emit fluorescence.

Because blue light refracted through the air, scattering rate, usually spread not far away, it is penetrating poor, which may explain why the LED white light penetration is weak.