This is a 40X DIN-standard objective lens for compound microscopes. It features achromatic color-correction, and plan field-correction.
Features & Specifications:
Magnification: 40X
NA: .65
Optical Working Distance: 0.633mm
Thread: RMS
Mechanical Tube Length: 160mm
Cover Glass Thickness:0.17mm
Color Correction: achromatic
Field Correction: plan
Immersion Medium: none
Nosecone: spring