Colored LED lights can be used for many things, from work to play. There are now LED flashlights that use green, red, blue, and ultraviolet lights. There are many ways to use them, and each colour is best for certain things. All of the different colours of lights work well for night vision because they don't bleach out the chemicals that let the human eye see at night.
The red LED bulb in flashlights helps you see better at night. It has a lot of contrast and can't be seen by the human eye from far away. It also works well with scopes and goggles that let you see in the dark. When taking pictures at night, photographers use red light because it gives contrast while keeping the natural shadows that come with darkness. It cuts through smoke better than white light and, with the exception of red lines and marks on maps and charts, makes it possible to read in low or no light. For nighttime operations, police and military units like the red LED because it doesn't interfere with night vision technology and is hard to pick up.
Hunters and fisherman like the green LED light because it is a soft light that won't scare away their prey. Green light also doesn't make bugs come out like white or yellow light does. It is hard to find unless you look right at it, so it can be used in secret operations. It is another colour that helps in places with a lot of smoke.
The blue LED hand-held light is good for reading maps or charts in situations where it is important to see in the dark and not be seen. Blue light can also help find blood and other bodily fluids at crime scenes or during search and rescue operations. Hunters can also use the blue light to find the blood trails of animals that have been hurt. Blue lights are often used in small keychain lights because they give off a soft light that is good for lighting locks, keys, and other small things. It doesn't shine as brightly as the bright white LED. These lights can also cut through fog well.
UV LED lights are used in many different ways in the business world. They are used to find fake art, antiques, and money. They can also find small amounts of blood proteins and chemicals in the soil at crime scenes. Just like blue light, this one can see blood and other fluids in the body that the naked eye might miss. In fun ways, ultraviolet light works like a black light. It can find hidden messages and make neon and fluorescent colours stand out more. UV lights can be used to make things glow again, like fishing lures, watch faces, compass needles, SAR signals, and so on. It is important not to shine ultraviolet LED lights directly into the eyes because it can hurt them.
Whether you're hunting at night and want to keep your night vision or you're in a burning building and need to see through the smoke, coloured LED lights are a great choice. Because they can be used for so many things, everyone needs them. Flashlights can have one colour of light or more than one bulb so you can choose how much light you want. This means that when the right light is needed, it will always be there. So, coloured LED flashlights are a great choice whether you need one colour of light for a specific task or more than one for whatever comes up.
~ Ben Anton, 2008
