Lighting: radiant power measurements

Radiant power is the amount of power [light] emitted from a source irrelevant of the direction it is emitted, expressed in Watt [W]. Applied to light sources, it is known as spectral power and defines the total amount of power in Watts emitted for each wavelength in each direction. Admesy offers complete solutions with integrating spheres to carry out spectral power measurements for various types of light sources from UV, VIS to UV-NIR.

sphere drawing






A typical radiant power measurement setup consists of a spectrophoto- or spectroradiometer connected to an integrating sphere. This combination allows precise determination of spectral power distribution, dominant and peak wavelengths, CRI, CCT, PAR and colour. Admesy’s combined spectro- and colorimeter, the Cronus, additionally allows flicker measurements without the need for a separate device. For more information about radiant power measurements of LEDs, please take a look at our corresponding application guide.

 Spectral colour analysisXXX
 Dominant & peak wavelengthXXX
 Radiance & irradianceXXX
 Luminance & illuminanceXXX
 Radiant intensityXXX
 Luminous intensityXXX
 Radiant powerCombined with sphereCombined with sphereCombined with sphere *
 Luminous powerCombined with sphereCombined with sphereCombined with sphere *
 Flicker analysis X
 Low luminance measurements  

 *Cronus Bhaskar measures relative flux