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Visible Light (400 nm-750 nm)

Visible light corresponds to light that can be seen by the human eye. It ranges in color from violet at the lower end to red at the higher end, with peak response coming at 555 nm, which is part of the color blue.

Although the spectrum is continuous between the colors, the following ranges can be used to distinguish between various light sources:

  • Violet (380-450 nm)
  • Blue (450-495 nm)
  • Green (495-570 nm)
  • Yellow (570-590 nm)
  • Orange (590-620 nm)
  • Red (620-750 nm)

Excelitas offers various detectors that can detect visible light, from common PN photodiodes to more high-performance sensors in cases where the amount of radiation is very minimal.
Excelitas is a leading supplier of optoelectronic sensors and modules that covers the entire electromagnetic spectrum, from Gamma rays all the way to the Far Infrared. Whether you are looking at visible photons for fluorescence measurements, long-wavelength infrared for motion sensing, gamma rays for nuclear medicine, or anything in-between, chances are we have the detector you are looking for. 
Did You Know?

Two of the earliest explanations of the optical spectrum came in the seventeenth century from Isaac Newton.