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What are some of the uses of LED colored lights in the defense industry?

Green LEDs of wavelength 495nm along with red LEDs are useful for military pilots who have special devices that are made for night vision. Blue LEDs are useful for pilots who need to read maps at night. Special infra-red LEDs are used to light areas at night without making the target aware that they are being viewed. This is facilitated through special IR night vision equipment.

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