1、 IEC 61947-1 Edition 1.0 2002-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Electronic projection Measurement and documentation of key performance criteria Part 1: Fixed resolution projectors Projection lectronique Mesure et documentation des critres principaux de performance Partie 1: Projecteurs
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16、2002-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Electronic projection Measurement and documentation of key performance criteria Part 1: Fixed resolution projectors Projection lectronique Mesure et documentation des critres principaux de performance Partie 1: Projecteurs rsolution fixe INTERNATIO
17、NAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE V ICS 35.180; 37.020; 33.160.60 PRICE CODE CODE PRIX ISBN 978-2-83220-632-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sur
18、e that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 61947-1 IEC:2002 CONTENTS FOREWORD . 3 INTRODUCTION . 4 1 Scope . 5 2 Normative references 5 3 Definitions 6 4 General requirements
19、. 10 5 Light output measurement and specification 11 5.1 Light output specifications 12 5.2 Light output uniformity . 13 5.3 Contrast ratio . 13 5.4 Light transmission for fixed resolution projection systems: liquid-crystal imaging devices (LCD) used with an overhead projector (OHP) 13 5.5 Small are
20、a contrast ratio for alternating black and white pixel lines . 14 6 Fixed resolution projectors characteristics . 15 6.1 Displayable format (IEC resolution) 15 6.2 Aspect ratio . 15 6.3 Viewing angle (half/gain) specification for devices with an integral screen 15 6.4 Input signal format compatibili
21、ty . 16 6.5 Response time 16 6.6 Colour measurements 16 6.7 Number of colours . 17 6.8 Keystone correction . 17 7 Range of focus and image size . 17 8 Audio characteristics . 18 9 Light source specification. . 18 10 Maximum acoustical noise level 18 11 Power consumption 18 12 Weight 19 13 Dimensions
22、 . 19 14 Sync hierarchy Recommended practice 19 Annex A (normative) Figures 20 Annex B (normative) Pattern generator specifications . 23 Annex C (informative) Considerations in formulating this standard 24 Annex D (normative) Complete sample specification . 26 Annex E (informative) Conversion equati
23、ons. 27 Annex F (informative) Possible causes of photometric measurement errors 28 Annex G (informative) Photometer precision and veiling glare . 29 Annex H (informative) Light measuring devices 31 Annex I (Informative) Figure of merit for projection display colour gamut . 32 Bibliography 34 61947-1
24、 IEC:2002 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRONIC PROJECTION MEASUREMENT AND DOCUMENTATION OF KEY PERFORMANCE CRITERIA Part 1: Fixed resolution projectors FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all n
25、ational electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standard
26、s. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC coll
27、aborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opin
28、ion on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides a
29、nd they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IE
30、C Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is draw
31、n to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61947-1 was prepared by IEC technical committee 100: Audio, video and mul
32、timedia systems and equipment. This bilingual version (2013-03) corresponds to the monolingual English version, published in 2002-08. The text of this standard is based on the following documents: FDIS Report on voting 100/501/FDIS 100/537/RVD Full information on the voting for the approval of this
33、standard can be found in the report on voting indicated in the above table. The French version of this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain un
34、changed until 2004. At that date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 4 61947-1 IEC:2002 INTRODUCTION This standard was developed to ensure a common, meaningful description of key performance parameters for fixed resolution projectors. The measu
35、rement methods and test signals correlate closely to typical uses involving computer-generated text and graphics displays. These measurements evaluate the actual viewable image that emanates from fixed resolution projectors. The resulting performance specifications are conservative in nature and all
36、ow any display device to be used beyond its rated specifications with degraded performance. The point at which this degraded performance is no longer useful is highly subjective and strongly affected by the environment and the application. This standard is designed to specify a means of measuring an
37、d quantifying the performance of fixed resolution projectors and is not intended to provide design goals for manufacturers of such equipment. 61947-1 IEC:2002 5 ELECTRONIC PROJECTION MEASUREMENT AND DOCUMENTATION OF KEY PERFORMANCE CRITERIA Part 1: Fixed resolution projectors 1 Scope This part of IE
38、C 61947 specifies requirements for measuring and documenting key performance parameters for electronic projection systems with fixed resolution projectors in which the light source and projection/magnification optics are an integral part of the system (i.e. individual pixel light sources or matrix d
39、isplays such as liquid crystal, DMD, plasma, or electroluminescent panels). It also applies to LCD panels or other fixed resolution imaging devices themselves that are used with overhead projectors. The provisions of this standard are designed to codify the measurement of the performance of variable
40、 resolution projectors and are not intended to provide design goals for manufacturers of such equipment. This standard is intended for fixed resolution projectors that are primarily designed for use with discrete colour (RGB) raster-scanned video, text, and graphics signals generated by computer equ
41、ipment. NOTE These devices may also accept composite or component television video signals encoded in ITU/R publications, which are not within the scope of this standard. In this standard, all of these signals are referred to as television video (TV video). Projectors and projection systems with mul
42、tiple variable resolutions, such as cathode-ray tubes and laser projectors, are not fully addressed by this standard, and reference should be made to IEC 61947-2. A discussion of considerations taken into account in the development of this standard appears in Annex C. 2 Normative references The foll
43、owing 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. IEC 61947-2, Electronic projection Measurement and docume
44、ntation of key performance criteria Part 2: Variable resolution projectors IEC 61966-4, Multimedia systems and equipment Colour measurement and management Part 4: Equipment using liquid crystal display panels IEC 61966-5, Multimedia systems and equipment Colour measurement and management Part 5: Equ
45、ipment using plasma display panels ISO 3741, Acoustics Determination of sound power levels of noise sources using sound pressure Precision methods for reverberation rooms ISO 7779, Acoustics Measurement of airborne noise emitted by information technology and telecommunication equipment 6 61947-1 IEC
46、:2002 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 active matrix display display that uses switches at each pixel to select those pixels to which a voltage will be applied 3.2 active viewing area horizontal and vertical dimensions in millimetres (inches) of t
47、he boundary of the array of pixels. It may also be expressed in square millimetres or square inches 3.3 aperture ratio (fill factor) light transmitting/reflecting area of a pixel times the number of pixels divided by the active viewing area (light transmitting area and light blocking area) 3.4 aspec
48、t ratio proportions of a projected picture area, for example, the width compared to the height NOTE It is usually expressed in standard ratios such as 4:3, 16:9, or others. 3.5 blanking process of the beam turning off (blanking) which occurs during horizontal and vertical retrace (flyback) 3.6 CIE C
49、ommission Internationale de lEclairage, the international commission on illumination NOTE The CIE is an organization devoted to international cooperation and exchange of information among its member countries on all matters relating to the art and science of lighting. 3.7 CIE chromaticity values Cartesian coordinates used to define a colour in CIE colour space NOTE The 1931 chromaticity values are designated x and y. In 1976
