Features:
*For use with corrected optics with 160mm focal length tubes, such as biological microscopes.
*Standard DIN 45mm focal length with coated optical parts.
*40x, 60x, 100x objectives are spring loaded to prevent slide damage.
*The 100x objective is equipped with pine pitch to achieve the design of numerical aperture.
*Corrected for chromatic aberration, spherical aberration, and paraxial coma in two bands.

Specifications:
Part Name:Objective Lens
Material: for copper core
Size:As shown
Color:Black
Magnification: 4X//20X/40X/60X/100X
Mounting size: 20.2mm
Tube length: 160mm
4X: Numerical aperture () 0.1; Working distance 18mm
: Numerical aperture () 0.25; Working distance 7mm
20x: Numerical aperture () 0.4; Working distance 0.55mm
40X: Numerical aperture () 0.65;
60X: Numerical aperture () 0.85; Working distance 0.18mm
100X: numerical aperture () 1.25; working distance 0.13 mm

Package Content:
1*Objective Lens