ISO 9241-303-2011 PDF

Full title and description

Ergonomics of human–system interaction — Part 303: Requirements for electronic visual displays. This international standard specifies image‑quality requirements and provides technology‑independent performance specifications and guidelines intended to ensure effective, comfortable viewing conditions for users with normal or adjusted‑to‑normal eyesight.

Abstract

ISO 9241-303:2011 defines generic image‑quality requirements for electronic visual displays (EVDs) and accompanying recommendations. Requirements are expressed as performance specifications and guidance covering viewing conditions, luminance and contrast, visual artefacts (flicker, jitter, moiré, reflections), legibility/readability, fidelity (colour, grey scale, motion) and conformance assessment to support comfortable, effective visual interaction across technologies and environments.

General information

• Status: Published (confirmed International Standard).
• Publication date: November 2011 (Edition 2, published 2011-11-09 / 2011-11-10 depending on national listing).
• Publisher: International Organization for Standardization (ISO), prepared by ISO/TC 159/SC 4 (Visual display requirements group).
• ICS / categories: 13.180 (Ergonomics); 35.180 (IT terminal and peripheral equipment).
• Edition / version: Edition 2 (ISO 9241-303:2011), replaces ISO 9241-303:2008.
• Number of pages: 43 pages (ISO published text).

Scope

Specifies image‑quality requirements and guidance for electronic visual displays in a technology‑neutral way. The standard addresses viewing conditions, measurement and performance criteria to reduce adverse visual effects and to improve legibility, readability and overall image fidelity for typical users (normal or corrected vision). It is not primarily an accessibility standard for people with disabilities, though many recommendations support older‑eye considerations and may be useful for some visual‑impairment assessments.

Key topics and requirements

• Viewing conditions and design viewing distance/direction, gaze and head posture considerations.
• Luminance, ambient lighting compatibility, luminance balance and glare control/adjustability.
• Visual artefacts: limits and requirements for flicker, jitter, moiré, geometric distortion, pixel/screen defects and unwanted reflections.
• Legibility and readability: minimum contrast, image polarity, character size/spacing and graphical object legibility rules.
• Legibility of coding and graphics: guidance on luminance, blink, colour and geometric coding.
• Fidelity: colour gamut, grey‑scale rendering, gamma, motion rendering, image formation time (IFT), spatial resolution and pixel density.
• Conformance and measurement: test/assessment framework and referenced test methods for declaring compliance with the requirements.

Typical use and users

Used by product designers, display engineers, usability and ergonomics professionals, test laboratories and procurement teams to specify, evaluate and verify visual display performance for office, industrial and specialist equipment. It supports manufacturers (design and quality), test houses (laboratory and field assessment), ergonomists and regulators concerned with human factors for display hardware and integrated systems.

Related standards

Part of the ISO 9241 series on ergonomics of human–system interaction. Closely related parts include ISO 9241‑300 (introduction to electronic visual display requirements), ISO 9241‑302 (terminology for EVDs), ISO 9241‑304 (user performance test methods), ISO 9241‑305 (optical laboratory test methods), ISO 9241‑306 (field assessment methods) and ISO 9241‑307 (analysis and compliance test methods), among others in the 300‑series addressing display measurement and evaluation.

Keywords

electronic visual displays, image quality, luminance, contrast, flicker, readability, legibility, display conformance, ISO 9241, ergonomics, visual ergonomics.

FAQ

Q: What is this standard?

A: ISO 9241-303:2011 is an International Standard that specifies image‑quality requirements and guidance for electronic visual displays to ensure comfortable and effective viewing. It is Edition 2 (2011).

Q: What does it cover?

A: It covers technology‑independent performance specifications for viewing conditions, luminance and contrast, visual artefacts (flicker, jitter, moiré, reflections), legibility/readability, fidelity (colour and motion) and methods for assessing conformance.

Q: Who typically uses it?

A: Display manufacturers, ergonomists, usability engineers, test laboratories, procurement/specification teams and organizations procuring or certifying displays for occupational, industrial or specialist applications.

Q: Is it current or superseded?

A: ISO 9241-303:2011 is the 2011 (second) edition that superseded ISO 9241-303:2008. The 2011 edition is listed as published and was confirmed in periodic review (stage 90.93). Users should check national/regional adopted editions or later revisions for updates before relying on the standard for compliance decisions.

Q: Is it part of a series?

A: Yes — it is part of the ISO 9241 multi‑part series (300‑series covers displays and display‑related hardware); related parts provide terminology, test methods and conformance procedures for electronic visual displays.

Q: What are the key keywords?

A: Image quality, luminance, contrast, flicker, legibility, readability, colour fidelity, visual artefacts, conformance, electronic visual displays (EVDs), ergonomics.