How NIST Uses Blue Light to See Through Fire (IMAGE)

National Institute of Standards and Technology (NIST)

How NIST Uses Blue Light to See Through Fire

Caption

Graphic illustrating the NIST narrow-spectrum illumination method for imaging through fire. Blue LED light is directed through a gas fire, reflects off the target object behind the flames and is captured by a camera after passing through an optical filter. This reduces the observed intensity of the flame by 10,000-fold and yields highly detailed images.

Credit

Graphic created by N. Hanacek/NIST based on a concept by M. Hoehler/NIST

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