5X 10X 20X Infinity Plan Objective Lens M26 Thread for Metallurgical Microscope

  
5X 10X 20X Infinity Plan Objective Lens M26 Thread Infinite Corrected Optical System for Nikon Metallurgical Microscope Specifications: Connecting threads: M26 Magnification: 5X, 10X, 20X for choosing Optical working distance: 5X-23.6, 10X-17.8, 20X-5 This series objectives are designed specially used for Nikon Industry Microscope LU series, could instead of CFI-60 Plan Fluor semi-apo objectives. Apply for microscope of infinite corrected optical system with tube lens FL 200mm, such as nikon CFI-60 optical system. This objective could be used as a substitute objecive lens of Nikon CFI-60 Plan Fluor semi-apo objective lens. DIN 60mm standard, All optics are AR coated between 400nm700nm. 20X objectives have spring-loaded(retractable) front ends. Specifications: Material: High-quality optical glass Magnification: 5X, 10X, 20X options Connecting Threads: M26 standard Optical Working Distance: 5X-23.6mm, 10X-17.8mm, 20X-5mm Coating: AR coating between 400nm700nm Design: Spring-loaded (retractable) front end for 20X objective.