ITL Boulder - The Light Center of the Industry since 1955

Integrating Sphere (Photometric/Color) Testing for Lamps or Luminaires

ITL’s Standard Integrating Sphere (color) test reports include: Spectral measurements from 380nm to 780nm, Total Radiant Flux (Watts) from 380nm to 780nm, Total Luminous Flux (Lumens), Spectral Flux Distribution Curve, Efficacy (Lumens/Watt), Electrical Data from precision power analyzers and much more. 

ITL’s Standard Integrating Sphere Test Reports Include:

• Spectral measurements from 380nm to 780nm
• Total Radiant Flux (Watts) from 380nm to 780nm
• Total Luminous Flux (Lumens)
• Spectral Flux Distribution Curve
• Efficacy (Lumens/Watt) – with wattage from Power Meter
• Correlated Color Temperature
• Average Color Rendering Index (CRI Ra)
• CRI R9 (Strong Red)
• All other CRI values (RI-15)
• ANSI C78.376 or C78.377 Duv
• Chromaticity Coordinates (1931 x,y / 1976 u’v’)
• Ratio of Scotopic to Photopic Lumens
• 1931 CIE Diagram
• Report presented in Postscript, Adobe Portable Document Format (PDF)

Optional Data Available:

• Spectral Flux tabulated in 5nm increments on report with 1nm increments tabulated in a Comma Separated Values (CVS) file
• Extended Spectral Measurements from as low as 250 nm to as high as 1300 nm