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Modular integrating sphere concept

The modular integrating sphere concept from Gigahertz-Optik offers a high flexibility level when it comes to individual configuration of integrating spheres. In addition to the various components such as port frames, baffles and sockets that can be directly mounted onto the integrating sphere, numerous other accessories are offered for configuration of application-ready integrating spheres and integrating sphere measurement systems.

Base sphere with 150mm / 6 inch diameter

The starting point of every individually configured integrating sphere is a hollow sphere. The hollow sphere of the UMTK-150 has a 150mm (6 inches) internal diameter.

Reflective coating made of synthetic ODM98

The UMTK-150 has a diffusely reflective coating made of ODM98. The coating ODM98 guarantees excellent diffuse reflective properties, high reflectance from 250 to 2500nm and UV Radiation stability.


The UMTK-150 is offered with a fix socket and optinal plate to fix the filterwheels FW-170 to the sphere.

Sphere ports with port frames

Sphere ports are usually designed with a port frame onto which the accessories can be mounted. Port frames with free ports with diameters ranging from 12.5 to 63.5mm are hereby offered.


Baffles are placed between sphere openings or in front of detectors and light sources to prevent direct illumination. Different baffle designs and sizes made by ODM98 are available.

Complementary products

Gigahertz-Optik offers a wide range of port adapters, sphere accessories, radiation detectors and light meters which can be assembled for various applications. Such applications include integrating sphere detectors, integrating sphere light sources and integrating spheres for material properties.

Version with baseplate available
max. port frame size

UMPF-2.5 (63.5mm dia)

max. opening

UMMP-100 (100mm dia) 


see download section

Sphere diameter

150mm / 6 in


ODM98, thickness 10mm



Aluminum, natural anodized

Type Description File-Type Download
Datasheet UMTK-150 PDF
Datasheet Dimensions UMTK-150 PDF
Produktname Product Image Description Show product
UMPF Port frames for the hollow spheres of the UM series modular construction integrating spheres.

Features: Different diameters. Frame with V-groove for accessory mount.

UMPF-LSOK30 Port frame for use with the lamp LS-OK30.

Features: Optional diffuse window for use between LS-OK30 and the sphere.

UMPB Detector baffle for the hollow spheres of the UM series modular construction integrating spheres.

Features: Schading of ports to ports, ports to light sources, ports to detectors etc. Barium sulfate or synthetical coating.
Article-Nr Modell Description Request / Compare
101422 UMTK-150

Integrating sphere base model with 150mm diameter

15297233 UMT-Z01 Bottom plate to be mount to the stand of UMTP-150.

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