LED light emitting diode products with different light colors have different applications. In some products, the color of the LED has a fixed requirement, such as a red mouse, the most common color and its actual use:

       Red light, red light is usually used as night vision because it does not cause excessive contraction and red eyes do not need to adapt to the dark red pupil once it is extinguished. It is usually used as a "safe" color in monochrome printing because it is not damaged by the printed film.

       Yellow light, yellow light has some advantages of red light and white light, another advantage is that when you read light that reduces reflection and glare caused by long-term reading eye fatigue

       The green light and green light can also be used as a night vision, and the green light is especially suitable for nighttime reading, maps or charts. It is not so easy to be found in night vision devices that are easily found, human eyes, bright green below red.

       Blu-ray, blue light can be used to read maps, and nights are usually favored by military personnel, because contrast increases blue light, it can also be used as a theater and background office light color performance

       Cyan, blue and green light have similar green and blue night visions, but as the color characteristics of blue-green light improve, some users prefer to use blue-green light for this reason.

       White light, white light color features perfect, but it will damage dark vision, some light to spend some time to re-adapt.

       UV, UV is often used to determine the authenticity of the renminbi, some UV LED lighting is very popular in nightclubs and parties, they are used to make fluorescent substances emit brighter light

       Infrared red light, infrared red light is used in conjunction with night vision equipment, or people's eyes do not see infrared light.