ISO 19012-4:2024 PDF

Microscopes — Designation of microscope objectives — Part 4: Polarization characteristics

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Title (English):

ISO 19012-4:2024

Microscopes — Designation of microscope objectives — Part 4: Polarization characteristics

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 5
Publication date:: May 15, 2024
Edition:: ISO IS 19012 edition 1 version 1
ICS:: 37.020

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Description (English):

This document specifies the use of the marking on objectives for polarization microscopes and defines measurands and measurement procedures of polarization characteristics of the objectives for qualitative polarization imaging. These measurements are defined on the image plane of the objective lens. This marking is consistent with ISO 8578. NOTE This document does not apply to objectives exclusively used on stereomicroscopes.

Technical details

Technical committee: ISO/TC 172/SC 5 - Microscopes and endoscopes
SKU: ISO 19012-4:2024

Abstract

Overview

ISO 19012-4:2024 is an international standard that specifies the designation and polarization characteristics of microscope objectives used in polarization microscopy. It defines the marking system for polarization microscope objectives and establishes standardized measurement procedures to evaluate their polarization performance. This ensures consistent qualitative polarization imaging by detailing the extinction ratio measurement on the image plane of the objective lens. The standard aligns with ISO 8578 regarding marking conventions but excludes objectives used exclusively on stereomicroscopes.

This standard supports manufacturers and users in verifying and communicating objective lenses' polarization properties, essential for accurate microscopy applications where polarization effects are critical.

Key Topics

Polarization Characteristics of Objectives The standard focuses on minimizing the influence of objective lenses on polarization imaging by defining measurable polarization parameters.
Extinction Ratio Definition and Requirements The extinction ratio (r) is key to assessing polarization performance, calculated as the ratio of transmitted intensity through parallel polarizers to that through crossed polarizers. Required minimum extinction ratios vary by numerical aperture (NA) ranges:
- NA

Related standards

Mentioned in the description and other ISO standards

Overview

Key Topics

Polarization Characteristics of Objectives The standard focuses on minimizing the influence of objective lenses on polarization imaging by defining measurable polarization parameters.
Extinction Ratio Definition and Requirements The extinction ratio (r) is key to assessing polarization performance, calculated as the ratio of transmitted intensity through parallel polarizers to that through crossed polarizers. Required minimum extinction ratios vary by numerical aperture (NA) ranges:
- NA

ISO 19012-4:2024 PDF

Technical details

Abstract

Overview

Key Topics

Related standards

Abstract

Overview

Key Topics

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