Front Optics

Focusing Optics

The specbos radiometers in their basic configuration can measure in Luminance mode only with diameters of 4 mm and more.

JETI offers three focusing optics to reduce the measuring diameter. Their data are shown in the following table.

Focusing Optics #1 #2 #3
Measuring diameter 3 mm 1 mm 0.5 mm
Measuring distance (from front face of the optics) 70 mm 26 mm 46 mm
Field of view 2.1° 1.9° 0.6°
Length of optics 77 mm 26 mm 77 mm
Part number (specbos 1201 focus) ACC 006 ACC 007 ACC 008
Part number (specbos 1211 focus) ACC 006/1 ACC 007/1 ACC 008/1

It is only possible to use the focusing optics with specbos 1201 focus/ specbos 1211 focus. These optics cannot be used with the standard versions of the instruments.

Focusing optics for spectraval are also avaiable on request.

Special imaging Optics

In some applications it is necessary to create a specified measuring diameter in a specified distance. This can be realized with customer specific optics. Send both data and you will get an offer for this specification:

Part number:         ACC 009/d_D (measuring diameter d (mm) in the measuring distance D (mm))

 front optic sceme
Example ACC 009/20_2050: d = 20 mm and D = 2050 mm