PSM Precision Balls


10 Precision Balls for use with the PSM for alignment and assembly of optical systems.


These 0.5” (12.7 mm) diameter chrome steel balls are Grade 5, the best quality available as a commodity item. The balls are round to 125 nm with a surface finish of 1.25 nm rms. The balls are near diffraction-limited convex mirrors with a reflectivity of about 65%. They are ideal for use with the PSM in transferring optical to mechanical datums, and vice versa to better than 1 µm. Typically, the balls are supported on the ends of lens posts used as kinematic mounts. Where the mounting surface is not horizontal, use the magnetic nests listed under ball/nest pairs.

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:

Optical Perspectives Group, LLC

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