Microscope Objective Adapters


These adapters are compatible with most major brands of infinity-corrected microscope objectives.


The standard PSM ships with a Nikon objective (shown here as NIK C60) and an adapter with M25 x 0.75 threads. The MIT adapter is for Mitutoyo objective with M26 x 36 threads/inch (TPI), and the RMS is for many older objectives with Royal Microscope Society threads, 0.800” x 36 TPI. The C mount adapter mates with Edmund Optics objectives and lens tubes with 1.000” c 32 TPI, and the THOR adapter mates with Thorlabs SM1 threads (1.035” x 40 TPI) in their lens tubes.

These last 2 adapters are useful for adding other optics in front of the PSM or using a simple doublet to get a longer working distance objective. The PSM has a 100 mm efl tube lens so a 100 mm efl doublet will give 1:1 magnification. The standard Nikon 10x objective gives 5x magnification with the PSM.

The adapters are held in the PSM by 4 set screws, two on either side of the PSM body. A 2.5 mm hex wrench is used to loosen the M3 set screws.

Disclaimer: All specifications and prices are subject to change.

Worldwide Representatives


Armstrong Optical
+44(0) 1604 654220

All Asian Countries Except China

清 原 耕 輔   Kosuke Kiyohara
清原光学 営業部   Kiyohara Optics / Sales

Kiyohara Optics Inc.
3-28-10 Funado Itabashi-Ku Tokyo, Japan 174-0041


Langxin (Suzhou) Precision Optics Co., Ltd
1st floor, Building 10, Yisu Science and Technology Innovation Park, 100 meters west of the intersection of Xinhua Road and Weimeng Road, Kunshan City, Suzhou City, Jiangsu Province, 215345

Telephone: +860512-57284008
Contact: Wang Zengkun

Australia & New Zealand

Mersenne Optical Consulting


Fiber Optic Services
Joshi Pravin: Info@foservice.com

Optical Perspectives Group, LLC

Copyright ©
Website by CS Design Studios
Headquarters: 7011 E Calle Tolosa, Tucson, AZ 85750
Laboratory: 1661 S Research Loop, Tucson, AZ 85710