Light Source Spectrum Data

Relative spectral power distributions spds of cie illuminants a b and c from 380 nm to 780 nm.

Light source spectrum data.

Standard illuminants provide a basis for comparing images or colors recorded under different lighting. The emission spectrum for natural light generally follows the planck distribution in the visible part of the spectrum as we can see below. Full spectrum typically refers to the completeness of a light source s spectral energy particularly when compared to natural light sources such as natural daylight. The 175w xe light source xe spectrum is a compact and light weight high intensity light source.

It is especially suitable as a light source for spectroscopy microscopy optical scanning and industrial uses as well as for use with sp s popular digikröm monochromators and spectrographs. The sun is the most obvious. Double click the spectrum name or click the arrow to the right of the spectrum name to add the spectrum to the plotting window and the plotting legend. A standard illuminant is a theoretical source of visible light with a profile its spectral power distribution which is published.

This light is given different names depending on its wavelength and energy radio waves long wavelength low energy microwaves infrared visible light ultraviolet x rays and gamma rays short wavelength high energy. Visible light comprises only a tiny fraction of the entire electromagnetic radiation spectrum yet it contains the only region of frequencies to which the rods and cones of the human eye will respond. The exact spectral composition of a light source can only be determined by specialized photometric equipment such as a spectrometer. For example the sun and other stars are sources of white light.

White light can be generated by a variety of sources both in space and by artificial sources on earth. The emission spectrum of visible light arriving at the earth s surface from the sun. About light most objects in space give off radiate light.