Imaging Optics

Focusing Optics

The specbos and spectraval 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 1211 focus ACC 006/1 ACC 007/1 ACC 008/1
Part number spectraval ACC 006/2 ACC 007/2 ACC 008/2

It is only possible to use the focusing optics with type focus of specbos and spectraval model. These optics cannot be used with the standard versions of the instrument.

Special imaging optics on customer request