N125-DE
13
4．Technical Specifications
4.1 Main specifications
Optical System
Viewing Head
Eyepiece
Nosepiece
Objective
Focusing
Condenser
Stage
Illumination
Seidentopf Binocular Head, 30°Inclined,Interpupillary Distance 48-75 mm
WF 10X / WF 20X
Limited optical system/Infinite optical system
Backward Quadruple Nosepiece
Achromatic Objective 4×，10×，40×、100×
Coaxial Coarse and Fine Adjustment, Moving Range 0.002mm，Fine Division 20mm
Abbe Condenser,NA1.25
Double Layers Mechanical Stage160×140，Moving Range74×50
1W S-LED /6V20W Halogen Lamp
4.2 Eyepieces and Objectives
4.2.1. Achromatic Objective
Magnification
Numerical
Ap erture（NA） Focal Length(mm)
Working Length
（mm）
Focal distance
（mm）
Objective
4× 0.10 0.17 31.05 37.5 Dry
10× 0.25 0.17 17.13 7.316 Dry
40× 0.65 0.17 4.65 0.632 Dry
100× 1.25 0.17 2.906 0.198 Oil
4.2.2. Eyepiece
Eyepiece Magnification Focal Length （mm） Field of View（mm）
Wide field eyepiece 10× 24.95 Φ18
Wide field eyepiece 20× 12.5 Φ12
4.2.3. Total Magnification
Eyepiece
Objective
Total Magnification
20×
10×
4×
40×
40×
400×
100×
1000×
10×
100×
4×
80×
40×
800×
100×
2000×
10×
200×
