1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 9241-303:2011Ergonomics of human-systeminteractionPart 303: Requirements for electronic visualdisplays (ISO 9241-303:2011)BS EN ISO 9241-303:2011 BRITISH STANDARDNation
2、al forewordThis British Standard is the UK implementation of EN ISO 9241-303:2011. It supersedes BS EN ISO 9241-303:2008 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PH/9, Applied ergonomics.A list of organizations represented on this committee can
3、be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 74193 7 ICS 13.180; 35.180 Compliance with a British Standard cannot confer immunity from legal
4、obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2011.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9241-303 November 2011 ICS 13.180; 35.180 Sup
5、ersedes EN ISO 9241-303:2008English Version Ergonomics of human-system interaction - Part 303: Requirements for electronic visual displays (ISO 9241-303:2011)Ergonomie de linteraction homme-systme - Partie 303: Exigences relatives aux crans de visualisation lectroniques (ISO 9241-303:2011) Ergonomie
6、 der Mensch-System-Interaktion - Teil 303: Anforderungen an elektronische optische Anzeigen (ISO 9241-303:2011) This European Standard was approved by CEN on 10 November 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eur
7、opean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versio
8、ns (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, B
9、elgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN C
10、OMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9241-303:2011: EBS EN ISO 9241
11、-303:2011EN ISO 9241-303:2011 (E) 3 Foreword This document (EN ISO 9241-303:2011) has been prepared by Technical Committee ISO/TC 159 “Ergonomics“ in collaboration with Technical Committee CEN/TC 122 “Ergonomics” the secretariat of which is held by DIN. This European Standard shall be given the stat
12、us of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of
13、patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 9241-303:2008. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this
14、 European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland
15、and the United Kingdom. Endorsement notice The text of ISO 9241-303:2011 has been approved by CEN as a EN ISO 9241-303:2011 without any modification. BS EN ISO 9241-303:2011ISO 9241-303:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword . v Introduction viii 1 Scope 1 2 Normative referen
16、ces 1 3 Terms and definitions . 1 4 Guiding principles . 1 5 Ergonomic requirements and recommendations 2 5.1 Viewing conditions 2 5.1.1 General . 2 5.1.2 Design viewing distance . 2 5.1.3 Design viewing direction 3 5.1.4 Gaze and head tilt angles . 4 5.1.5 Displays for virtual images . 4 5.2 Lumina
17、nce 4 5.2.1 General . 4 5.2.2 Illuminance . 4 5.2.3 Display luminance . 4 5.2.4 Luminance balance and glare 5 5.2.5 Luminance adjustment . 5 5.3 Special physical environments 5 5.3.1 General . 5 5.3.2 Vibration . 5 5.3.3 Wind and rain . 6 5.3.4 Excessive temperatures . 6 5.4 Visual artefacts 6 5.4.1
18、 General . 6 5.4.2 Luminance non-uniformity . 6 5.4.3 Colour non-uniformity . 6 5.4.4 Contrast uniformity . 7 5.4.5 Geometric distortions . 8 5.4.6 Screen and faceplate defects . 8 5.4.7 Temporal instability (flicker) 8 5.4.8 Spatial instability (jitter) 9 5.4.9 Moir effects 9 5.4.10 Other instabili
19、ties 10 5.4.11 Unwanted reflections 10 5.4.12 Unintended depths effects . 10 5.5 Legibility and readability 11 5.5.1 General . 11 5.5.2 Luminance contrast 11 5.5.3 Image polarity 11 5.5.4 Character height 11 5.5.5 Text size constancy . 12 5.5.6 Character stroke width 13 5.5.7 Character width-to-heig
20、ht ratio 13 5.5.8 Character format 13 5.5.9 Between-character spacing 13 5.5.10 Between-word spacing . 13 5.5.11 Between-line spacing 13 BS EN ISO 9241-303:2011ISO 9241-303:2011(E) iv ISO 2011 All rights reserved5.6 Legibility of information coding .14 5.6.1 General 14 5.6.2 Luminance coding .14 5.6
21、.3 Blink coding .14 5.6.4 Colour coding .14 5.6.5 Geometrical coding .14 5.7 Legibility of graphics .14 5.7.1 General 14 5.7.2 Monochrome and multicolour object size .14 5.7.3 Contrast for object legibility .15 5.7.4 Colour considerations for graphics .15 5.7.5 Background and surrounding image effec
22、ts 16 5.7.6 Number of colours .16 5.8 Fidelity 17 5.8.1 General 17 5.8.2 Colour gamut and reference white .17 5.8.3 Gamma and grey scale 17 5.8.4 Rendering of moving images .18 5.8.5 Image formation time (IFT) 19 5.8.6 Spatial resolution .19 5.8.7 Raster modulation or fill factor 19 5.8.8 Pixel dens
23、ity .20 6 Conformance 20 Annex A (informative) Overview of the ISO 9241 series 21 Annex B (informative) Attractivity, or subject visual quality 22 Annex C (informative) Usability aspects of installation 23 Annex D (normative) Basic concepts of visual perception for contrast and luminance of electron
24、ic displays 25 Annex E (informative) Virtual display Performance objectives .33 Annex F (informative) Electronic visual display accessibility Selected bibliography .40 Bibliography 42 BS EN ISO 9241-303:2011ISO 9241-303:2011(E) ISO 2011 All rights reserved vForeword ISO (the International Organizati
25、on for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established ha
26、s the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Inte
27、rnational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publica
28、tion as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rig
29、hts. ISO 9241-303 was prepared by Technical Committee ISO/TC 159, Ergonomics, Subcommittee SC 4, Ergonomics of human-system interaction. This second edition cancels and replaces the first edition (ISO 9241-303:2008), of which it constitutes a minor revision. Together with ISO 9241-302 and ISO 9241-3
30、05, ISO 9241-303:2008 cancelled and replaced ISO 9241-8, and together with ISO 9241-302, ISO 9241-305 and ISO 9241-307, it cancelled and replaced ISO 9241-7 and ISO 13406-2, and partially replaced ISO 9241-3: terms and definitions related to electronic visual displays were transferred to, and collec
31、ted in, ISO 9241-302; while the areas previously covered in ISO 9241 and by ISO 13406 remained essentially unchanged, test methods and requirements were updated to account for advances in science and technology; all generic ergonomic requirements were incorporated into ISO 9241-303; the application
32、of those requirements to different display technologies, application areas and environmental conditions including test methods and pass/fail criteria is specified in ISO 9241-307. ISO 9241 consists of the following parts, under the general title Ergonomic requirements for office work with visual dis
33、play terminals (VDTs): Part 1: General introduction Part 2: Guidance on task requirements Part 4: Keyboard requirements Part 5: Workstation layout and postural requirements Part 6: Guidance on the work environment Part 9: Requirements for non-keyboard input devices Part 11: Guidance on usability BS
34、EN ISO 9241-303:2011ISO 9241-303:2011(E) vi ISO 2011 All rights reserved Part 12: Presentation of information Part 13: User guidance Part 14: Menu dialogues Part 15: Command dialogues Part 16: Direct manipulation dialogues Part 17: Form filling dialogues ISO 9241 also consists of the following parts
35、, under the general title Ergonomics of human-system interaction: Part 20: Accessibility guidelines for information/communication technology (ICT) equipment and services Part 100: Introduction to standards related to software ergonomics Technical Report Part 110: Dialogue principles Part 129: Guidan
36、ce on software individualization Part 143: Forms Part 151: Guidance on World Wide Web user interfaces Part 171: Guidance on software accessibility Part 210: Human-centred design for interactive systems Part 300: Introduction to electronic visual display requirements Part 302: Terminology for electro
37、nic visual displays Part 303: Requirements for electronic visual displays Part 304: User performance test methods for electronic visual displays Part 305: Optical laboratory test methods for electronic visual displays Part 306: Field assessment methods for electronic visual displays Part 307: Analys
38、is and compliance test methods for electronic visual displays Part 308: Surface-conduction electron-emitter displays (SED) Technical Report Part 309: Organic light-emitting diode (OLED) displays Technical Report Part 310: Visibility, aesthetics and ergonomics of pixel defects Technical Report Part 4
39、00: Principles and requirements for physical input devices Part 410: Design criteria for physical input devices Part 411: Evaluation methods for the design of physical input devices Technical Specifiction Part 420: Selection of physical input devices BS EN ISO 9241-303:2011ISO 9241-303:2011(E) ISO 2
40、011 All rights reserved vii Part 910: Framework for tactile and haptic interaction Part 920: Guidance on tactile and haptic interactions The following parts are under preparation: Part 154: Interactive voice response (IVR) applications Human-centred design and evaluation methods, optical characteris
41、tics of autostereoscopic displays, and requirements, analysis and compliance test methods for the reduction of photosensitive seizures are to form the subjects of future parts 230, 331 and 391. BS EN ISO 9241-303:2011ISO 9241-303:2011(E) viii ISO 2011 All rights reservedIntroduction This part of ISO
42、 9241 addresses a large range of technologies, tasks and environments. ISO 9241 was originally developed as a seventeen-part International Standard on the ergonomics requirements for office work with visual display terminals. As part of the standards review process, a major restructuring of ISO 9241
43、 was agreed to broaden its scope, to incorporate other relevant standards and to make it more usable. The general title of the revised ISO 9241, “Ergonomics of human-system interaction”, reflects these changes and aligns the standard with the overall title and scope of Technical Committee ISO/TC 159
44、, Subcommittee SC 4. The revised multipart standard is structured as series of standards numbered in the “hundreds”: the 100 series deals with software interfaces, the 200 series with human-centred design, the 300 series with visual displays, the 400 series with physical input devices, and so on. Se
45、e Annex A for an overview of the entire ISO 9241 series. BS EN ISO 9241-303:2011INTERNATIONAL STANDARD ISO 9241-303:2011(E) ISO 2011 All rights reserved 1Ergonomics of human-system interaction Part 303: Requirements for electronic visual displays 1 Scope This part of ISO 9241 establishes image-quali
46、ty requirements, as well as providing guidelines, for electronic visual displays. These are given in the form of generic independent of technology, task and environment performance specifications and recommendations that will ensure effective and comfortable viewing conditions for users with normal
47、or adjusted-to-normal eyesight. This part of ISO 9241 does not address issues of accessibility for people with disabilities. However, it does take into account aspects of the eyesight of older people and could be of value to people dealing with issues of visual impairment in certain cases: the speci
48、fication of essential characteristics for normal viewing can be used to gauge the severity of different visual abnormalities so that appropriate solutions can be identified. NOTE In addition to the Bibliography, Annex F gives a selected bibliography of documents addressing the needs of people with d
49、isabilities, including people with poor, deteriorating or no eyesight. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9241-302, Ergonomics of human-system interaction Part 302: Terminology for electronic visua
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