（用系统标题和描述）Microscope Objective INFINITY PLAN 4X 20X 60X f/ For Olympus CX41 CX31

Brightfield objectives Plan N series (also known as brightfield PLN series objectives)

Biological microscope objective lens-infinity plan achromatic series objective lens (Special for Olympus)

Plan 4X work distance is:12.1mm,4x/0.1,Infinity/-

Plan 20X work distance is:2.4mm,20x/0.4,Infinity/0.17

Plan 60X work distance is:0.33mm,60X/0.8 Spring,Infinity/0.17

RMS thread (20.2mm Mounting in diameter)