This series has a professional Koehler illumination unit with an adjustable field diaphragm, with infinity optical system. A variety of modular systems, such as a swing-out condenser, various eyepieces, objectives, color filters, phase contrast units, a dark field condenser, a simple polarising unit, butterfly tube, through to complete fluorescence units are optionally available. A C-mount adapter is required to connect a camera (optional).
- Trinocular
 - Tube 30° inclined, 360° rotatable
 - Eyepiece: HWF 10x/20 mm (OBN 147: WF 10x/20 mm)
 - Diopter adjustment: both-sided
 - Quintuple nosepiece
 - Objective quality: Infinity Plan
 - Coaxial pre-and fine focussing
 - Models with 20W halogen or 3W LED illumination
 - Dust Cover, eyepiece rubber caps and manual instruction included
 
For translucent, thin, low-contrast, challenging samples (e.g. immunofluorescence, FISH, DAPI staining, etc.).
OBN 141:- Objectives 4x, 10x, 20x, 40x, 100x
 - 3W LED transmitted illumination unit and 3W LED epi-fluorescence incident illumination unit
 - With B/G fluorescence filter with changeover slider
 - Centering and height-adjustable 1.25 Abbe condenser with adjustable aperture diaphragm
 - Incl. centering objective for fluorescence adjustment
 
OBN 147 / OBN 148:- Objectives 4x, 10x, 20x, 40x, 100x
 - 20 W halogen transmitted illumination unit and 100 W epi-fluorescent incident illumination unit
 - 6-position filter wheel with B/G or B/G/UV/V fluorescence filter
 - Centering and height-adjustable 1.25 Abbe condenser with adjustable aperture diaphragm
 - Incl. centring objective for adjusting the fluorescence
 
| Manufacturer: | Kern & Sohn GmbH | 
| Article description 1: | Transmitted light microscope OBN 148 | 
| Article description 2: | 6V, 20W Halogen (transmitted) 100W HBO (reflected) |