What does NM mean in infrared?
nanometers
IR or Infrared wavelengths are measured in ‘nm’ or nanometers, which are used to specify the wavelength of electromagnetic radiation near the visible part of the light spectrum.
Can IR LEDs hurt your eyes?
Infrared, visible or ultraviolet electromagnetic radiation, in sufficient concentrations, can cause damage to the human eye. To date, Light-emitting Diodes (LEDs) have not been found to cause any damage.
What color is 850nm?
red glow
The majority of more accessible CCTV systems will use 850nm (nanometers). This infrared light is completely invisible to the human eye however will produce a red glow when looking directly into the camera lens.
Can some humans see IR?
Louis discovered that contrary to prior beliefs, the human eye is in fact capable of seeing infrared light — but only under certain conditions. In the study, researchers shot quick pulses of laser light into their eyes, which triggered a “double hit,” allowing them to see flashes of green light, which was infrared.
What is the range of IR radiation?
Infrared radiation (IR), sometimes referred to simply as infrared, is a region of the electromagnetic radiation spectrum where wavelengths range from about 700 nanometers (nm) to 1 millimeter (mm). Infrared waves are longer than those of visible light, but shorter than those of radio waves.
Is 850 nm light harmful?
The lighting industry has standards upon which we can reference concerning LED light energy and safety. According to the IEC standards, IR light at a wavelength of 850 nm light should not exceed 10 mW/cm² if exposure time will exceed 1000 seconds to be considered safe.
Is IR camera harmful?
In long, an infrared camera just picks up light that is at a lower frequency than visible light. Just like a normal camera, it does not radiate any harmful radiation.
What Colour is 810nm light?
850nm – 810nm – Nearly invisible, a very dull red glow can sometimes be observed when viewed directly.
Is infrared light harmful to eyes?
The most common eye disease associated with near-infrared radiation is cataracts. Prolonged exposure to IR radiation causes a gradual but irreversible opacity of the lens. Other forms of damage to the eye from IR exposure include scotoma, which is a loss of vision due to the damage to the retina.
