ISO 10935:2009

Microscopes - Interfacing connection type C

ISO 10935:2009 specifies the dimensions of a thread mount connection type C for a microscope imaging exit port (other than a monocular or binocular viewing tube) and the position of the image plane.

Microscopes — Raccord d'interface de type C

General Information

• Status: Published
• Publication Date: 29-Jul-2009
• ICS: 37.020 - Optical equipment
• Technical Committee: ISO/TC 172/SC 5 - Microscopes and endoscopes
• Drafting Committee: ISO/TC 172/SC 5 - Microscopes and endoscopes
• Current Stage: 9093 - International Standard confirmed
• Start Date: 16-Sep-2024
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 10935:1996 - Optics and optical instruments - Microscopes - Interfacing connection type C
• Effective Date: 24-Jul-2008

Overview

ISO 10935:2009 defines the mechanical interface for a microscope interfacing connection type C used at an imaging exit port (excluding monocular or binocular viewing tubes). The standard specifies the exact dimensions of the thread mount (male and female components) and the required position of the image plane, ensuring mechanical and optical compatibility between microscopes and cameras or other optical detectors. This second edition (2009) replaces the 1996 edition and was prepared by ISO/TC 172/SC 5 (Microscopes and endoscopes).

Key topics and requirements

• Scope: Applies to the thread mount connection type C for microscope imaging exit ports (not for monocular/ binocular tubes).
• Dimensional specification: The male and female component dimensions are defined in the standard and shown in Figure 1 and Figure 2 (values expressed in millimetres).
• Image plane position: The location of the image plane relative to the interface is specified; the standard notes the 17.53 mm distance is measured in air.
• Thread standard reference: Thread form and related details are referenced to ISO 263:1973 (inch screw threads - general plan and selection).
• Terms and definitions: Key definitions include male component (microscope imaging exit port that accepts a camera) and female component (camera fitting into which the microscope exit port is inserted).
• Normative references: Includes ISO 263 and ISO 10934-1 (vocabulary for microscopy - Part 1: Light microscopy), which are indispensable for correct application.

Applications and who uses it

ISO 10935:2009 is essential for ensuring interoperability between microscopes and third‑party imaging devices. Typical users include:

• Microscope manufacturers designing standard imaging ports and production tolerances.
• Camera and adapter manufacturers creating compatible mounts and optical detectors.
• Optical/mechanical engineers responsible for system integration and alignment.
• Quality assurance and procurement teams specifying compliance in purchase contracts.
• Laboratories and service technicians needing assurance that accessories and cameras will mate correctly and place the image plane at the proper location.

Practical applications include designing camera adapters, ensuring repeatable optical alignment, reducing mechanical incompatibility risk, and supporting interchangeable imaging accessories across microscope product lines.

Related standards

• ISO 263:1973 - Inch screw threads (threading details referenced by ISO 10935).
• ISO 10934-1 - Optics and optical instruments - Vocabulary for microscopy (terms and definitions).

Keywords: ISO 10935:2009, microscope interface, connection type C, imaging exit port, thread mount, image plane distance, microscope camera adapter, mechanical compatibility, microscope standards.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 10935
Second edition
2009-08-01
Microscopes — Interfacing connection
type C
Microscopes — Raccord d'interface de type C

Reference number
©
ISO 2009
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