Integrating Spheres ISP

Precise luminous flux measurement of LEDs and luminaires 

Instrument Systems has developed a complete family of integrating spheres for individual LEDs as well as lamps and luminaires. As accessories to the CAS series of spectroradiometers they are needed for a wide range of measurement tasks in the lab and production. Thanks to optimized geometry inside the sphere, all integrating spheres from Instrument Systems exhibit high measurement accuracy. The high-quality barium sulfate coating is extremely stable in the long term, and suitable for the spectral range from 240 to 2600 nm.

The decisive factor for selection of the right sphere is the maximum size of the light source to be measured. Small ISP Integrating spheres (75–150 mm) were specially developed for the measurement of individual LEDs and are to be found in many labs and production lines. Medium-sized ISP spheres (250­­–1000 mm) are suitable for a wide range of LED modules and luminaires, while the ISP 2000 integrating sphere is used for the measurement of particularly large and heavy luminaires and SSL products. 

Key Features

- Barium sulfate coating with 97% reflection in the visible range

- Minimal aging effects and extremely low fluorescence level of coating

- Cover the spectral range between 240 and 2600 nm

- Ideally tailored to the spectrometer portfolio from Instrument Systems

- Spectrometer can be connected by means of a fiber optic cable