ISO 8038:2011

INTERNATIONAL ISO
STANDARD 8038
Second edition
2011-04-15
Microscopes — Screw threads for
objectives and related nosepieces
Microscopes — Filetages de fixation des objectifs et des porte-objectifs
correspondants
Reference number
©
ISO 2011
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Foreword
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ISO 8038 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 5,
Microscopes and endoscopes.
This second edition cancels and replaces the editions of ISO 8038-1:1997 and ISO 8038-2:2001, which have
been technically revised.
INTERNATIONAL STANDARD ISO 8038:2011(E)

Microscopes — Screw threads for objectives and related
nosepieces
1 Scope
This International Standard specifies the dimensions of screw thread types for connecting a microscope
objective to the nosepiece.
NOTE 1 The use of these screw thread types is recommended for microscopes unless other fittings are required for
optical or design reasons.
NOTE 2 A specific combination of eyepiece, objective and tube lens (if provided, e.g. in an infinity-corrected optical
system) is frequently used to correct aberrations. Therefore the combination of an objective from one manufacturer and
the tube lens or eyepiece from another manufacturer, although conforming to this International Standard, may cause error
in magnification and/or loss of image quality.
2 Types of screw thread
Types of screw thread are listed in Table 1.
Table 1 — Types of screw thread
Name of
...