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Phone: +49 (0)8193-93700-0

Gigahertz-Optik, Inc. (US office)
Phone: +1-978-462-1818


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This product is no longer manufactured. Remaining stock may still be available. Please refer to the alternatives listed below under "Similar products" or contact us directly.

Alternative Products for this discontinued product:

BTS256-LED Tester
Compact BiTec Spectroradiometer LED Tester for the Measurement of Total Luminous Flux of Single VIS and NIR LEDs


Integrating sphere detector for radiant power in W of 2π sources

  • 50 mm sphere diameter
  • 12.5 mm port diameter
  • 400 nm - 1100 nm radiometric responsivity
  • for the usage with optometers and signal amplifiers
  • Calibration certificate

Compact Integrating Sphere Detector

The ISD-5-VISNIR integrating sphere detector employs a 50 mm / 2 inch diameter Barium Sulfate (ODP97) coated integrating sphere with 12.7 mm / 0.5 inch diameter measurement port and a (400-1100) nm radiometric detector. 

Diffuser Window 

The sphere mounted photometric sensor is equipped with a diffusor so that the detector integrates reflected light from almost the complete integrating sphere surface. This greatly reduces hot spot effects caused by the first reflection of the light.


The sensor is positioned close to the measurement port to produce a large acceptance angle within the sphere without direct irradiation of the detector.

Traceable calibration

Calibration of radiant power responsivity in W is performed at Gigahertz-Optik’s Calibration Laboratory for Optical Radiation Quantities.

Typical Spectral Responsivity

Typical Spectral Responsivity

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Detector for fast, time-resolved (ns) radiant power measurement of pulsed laser diodes and LEDs

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