The measuring geometry of the basic device is restricted by its viewing angle of 1.8° and a minimum measuring diameter of 4 mm. A specific measuring diameter can be achieved only in a fixed distance.

JETI offers a variety of add-on optics to achive certain different measuring geometries. Two kinds of optics are available:

1. 1. Optics for specified measuring diameters in a specified distance
   2. Optics for different measuring angle than 1.8°

In addition, customized Add-on optics are possible.

Please note:
It is not possible to equip an existing standard model with these optics. It can only be used with the focus version of spectraval or specbos.

A) Specified measuring diameter in a specified distance

Add-on optics for spectroradiometer JETI specbos

Add-on optics for spectroradiometer JETI spectraval

B) Specified measuring angle (only spectraval)

Add on imaging optics with customized design

If you need another geometry for your application, we will check if it is possible. Please send us the desired measuring diameter d (in mm) with the measuring distance D (in mm) and you will receive an offer from us, if the realization is possible.
Example: If you would like to have an optics with a measuring diameter of 200 mm and a measuring distance of 2050 mm, request this as follows: ACC 009/20_2050