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ISD-15 Integrating sphere detector base sphere

The ISD-15 is used as a base sphere for setting up of integrating sphere detectors. Its measurement port has a 38.1mm diameter. The detector port is aligned at a 55° angle to the measurement port. A socket with an M6 connector is used for mounting.

Reflective coating made of barium sulfate

The ISD-15 is coated with Gigahertz-Optik‘s self-manufactured ODP97 barium sulfate diffusely reflective coating. The multilayer coating guarantees diffuse reflective properties over the entire usable spectral range.

Standard options

  • Port reducer for the measurement port
  • Baffle between the measurement port and detector. Necessary for highly divergent radiation beams
  • SMA light guide connector
  • Opening with plug for auxiliary lamp

Complementary products and services

For further enhancement of the ISD-15, Gigahertz-Optik offers a wide range of port adapters and sphere accessories. These can be connected with radiation detectors and light meters for various applications. In addition, the Gigahertz-Optik calibration laboratory for optical radiation measurands performs traceable calibrations of the integrating sphere radiation detectors.


Preconfigured hollow sphere of the UM series modular construction integrating spheres with detector applications for 2π sources

Sphere diameter

150 mm / 6 inch



spectral range




Measurement port

UMPF-1.5, Free diameter: 38,1 mm

Detector port

UMPF-0.5, Free diameter: 12,7 mm


see download section

Type Description File-Type Download
Datasheet ISD-15 PDF
Datasheet Dimensions ISD-15 (UMBB-150-S20-D) PDF
Produktname Product Image Description Show product
PD-11 series Detector head with DP-11 mount.

Features: modular detector for use with integrating spheres, front lenses etc, Si, SiLP, InGaAs, SiC, GaP photodiodes, for use with optometers and signal amplifiers

TD-11VL01 Photometric, temperature stabilized detector with DP-11 mount.

Features: for use with integrating spheres, Operation temperature 50 °C, for use with optometers and signal amplifiers

VL-1101 Photometric detector head with VL-11 mount.

Features: modular detector for use with integrating spheres, front lenses etc. For use with optometers and signal amplifiers

UFC-11 Fiber adapter for use with UP and UM type integrating spheres.

Features: SMA, FC, SC and ST connectors.
Article-Nr Modell Description Request / Compare
15298501 ISD-15

ISD-15 Integrating sphere detector base sphere

15298500 ISD-15-Z01

Baffle between measurement port and detector port

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