Standard diffusor
JETI specbos 2501-NIR measures in spectral Radiance mode. It is possible to convert it into a spectral Irradiance meter by attaching a diffusor.

90° diffusor
The standard diffusor of the device acts in line to the device. If the Illuminance at a low height above a surface needs to be measured, then the 90° diffusor can be applied. It is also available with attenuation filters to extend the Illuminance measuring range.

In axis remote diffusor
If the measurement needs to be done in locations with limited space conditions then the remote diffusor can be used. It is a diffusor which is coupled to the spectraval device by an optical fiber bundle. The measurement is done in axis to the fiber bundle. Different fiber lengths are available.

90° remote diffusor
If the measurement needs to be done under limited space conditions and the in axis fiber coupled diffusor is not suited, then the 90° fiber coupled diffusor can be applied. Different fiber lengths are available.

Neutral density filter
JETI specbos 2501-NIR can measure up to 100 000 cd/m² (typical white LED spectrum). An additional neutral density filter allows to shift the measuring range towards higher Luminance levels.

Battery charger

Bluetooth USB adapter

Carrying case/ bag

Protective cap

Straylight protection tube
The straylight protection tube prevents the influence of surrounding light on Radiance measurements. It is mainly used for display measurements. The fixed length of the tube is 16 cm.

Tipod

Stray light correction matrix
In order to reduce stray light in array spectroradiometers while taking advantage of their portability, JETI offers a stray light correction matrix.