IR 850nm VS 940nm Infrared Light

The Human Eye’s Sensitivity to Infrared Light

The human eye can see the light wavelengths in the range of about 380nm to 700nm. Light above 700nm in the infrared spectrum (IR Light) is not visible to the human eye. The shorter “near-infrared” wavelengths, which are closer to visible light, from about 700nm to 900nm, can appear as a faint red glow when looking directly at a high powered IR LED source. However, it is invisible to human eye as “light” that illuminates other objects.

850nm VS 940nm IR Lights – What is the Difference?

What is the difference between an IR illuminator 850nm and 940nm?

Radiation intensity: The radiation intensity of the 850nm Infrared LED is about two to three times higher than that of the 940nm IR light.

FAQ IR Illuminators, Security Lighting

Are all cameras IR compatible/sensitive to IR light?

Answer: Only the true Day/Night cameras using a physically removable IR cut filter perform well with IR illuminators.

Read More

About IR Light for Security Cameras

A video surveillance system has to be functional 24 hours a day in order to aid in the prevention of crime and the perpetrators prosecution. While designing a security system, it is important to consider lighting conditions as a factor that significantly affects camera image quality. Poor lighting conditions can compromise an entire system. Adding AXTON white or infrared (IR) security lighting will increase the effectiveness of your camera in adverse lighting conditions.

Read More

AXTON ISO Certified Lighting

© AXTON 2026 All Rights Reserved