1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58and management Part 6: Front projection displays The European Standard EN 61966-6:2006 has the stat
2、us of a British StandardICS 33.160.60; 17.180.20Multimedia systems and equipment Colour measurement BRITISH STANDARDBS EN61966-6:2006BS EN 61966-6:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006ISBN 0 580 48885 3Cros
3、s-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of B
4、ritish Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a f
5、ront cover, an inside front cover, the EN title page, pages 2 to 30, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations represented on t
6、his committee can be obtained on request to its secretary. present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.N
7、ational forewordThis British Standard is the official English language version of EN 61966-6:2006. It is identical with IEC 61966-6:2005.The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems and equipment, which has the responsibili
8、ty to: aid enquirers to understand the text;EUROPEAN STANDARD EN 61966-6 NORME EUROPENNE EUROPISCHE NORM May 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue
9、de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61966-6:2006 E ICS 33.160.60; 17.180.20 English version Multimedia systems and equipment - Colour measurement and management Part 6: Front proj
10、ection displays (IEC 61966-6:2005) Systmes et appareils multimdia -Mesure et gestion de la couleur Partie 6: Ecrans de projection frontale (CEI 61966-6:2005) Multimediasysteme und -gerte -Farbmessung und Farbmanagement Teil 6: Elektronische Projektoren fr Aufprojektion (IEC 61966-6:2005) This Europe
11、an Standard was approved by CENELEC on 2006-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
12、concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member
13、into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ita
14、ly, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of the International Standard IEC 61966-6:2005, prepared by IEC TC 100, Audio, video and multimedia systems and equip
15、ment, was submitted to the formal vote and was approved by CENELEC as EN 61966-6 on 2006-03-01 without any modification. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-0
16、3-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61966-6:2005 was approved by CENELEC as a European Standard without any modification. _ E
17、N 61966-6:2006 2 EN 61966-6:2006 CONTENTS INTRODUCTION.5 1 Scope 6 2 Normative references .6 3 Terms and definitions .6 4 Letters and symbols .7 5 Conditions8 5.1 Environmental conditions.8 5.2 Conditions for measurements.8 5.3 Input digital data10 6 Measurement equipment.10 6.1 Spectroradiometer .1
18、0 6.2 Colorimeter .11 7 Spectral characteristics and intensity of the primaries and white11 7.1 Characteristics to be measured11 7.2 Measurement conditions 11 7.3 Method of measurement 12 7.4 Presentation of results.12 8 Basic colorimetric characteristics 13 8.1 Characteristics to be measured13 8.2
19、Method of measurement 13 8.3 Presentation of results.14 9 Tone characteristics .14 9.1 Characteristics to be measured14 9.2 Measurement conditions 14 9.3 Method of measurement 15 9.4 Presentation of results.15 10 Other characteristics.18 10.1 Inter-channel dependency18 10.1.1 Characteristics to be m
20、easured 18 10.1.2 Measurement conditions 19 10.1.3 Method of measurement.19 10.1.4 Presentation of results .21 10.2 Spatial non-uniformity22 10.2.1 Characteristics to be measured 22 10.2.2 Measurement conditions 22 10.2.3 Method of measurement.22 10.2.4 Presentation of results .26 Bibliography .29 A
21、nnex ZA (normative) Normative references to international publications with their corresponding European publications30 3 EN 61966-6:2006 Figure 1 Equipment arrangement for measurements (side view)9 Figure 2 Size of colour patch9 Figure 3 Example of the spectral radiance distributions )(),(),( bgr .
22、12 Figure 4 Measured points and interpolated curves .16 Figure 5 Measurement points for spatial non-uniformity (25 points) .22 Figure 6 Measurement points for spatial non-uniformity (9points) 24 Figure 7 Measurement points for spatial non-uniformity (13 points) .25 Table 1 Input data for peak primar
23、ies and peak white .12 Table 2 Example of reporting form for colours in maximum excitations 13 Table 3 Example of reporting form14 Table 4 Example set of basic normalized data for tone characteristics.17 Table 5 Digital driving levels to generate colour patches for measurement of interchannel depend
24、ency 19 Table 6 Example of normalized tristimulus values (matrix A) .21 Table 7 Example of reporting form27 Table 8 Example of reporting form27 Table 9 Example of reporting form28 4 EN 61966-6:2006 INTRODUCTION The IEC 61966 series of standards defines methods and parameters for colour measurements
25、and colour management for use in multimedia systems and equipment, applicable to colour production and reproduction. Part 6 deals with front projection displays. The methods of measurement standardized in this part are designed to make possible the objective characterization of colour reproduction o
26、f front projection displays which accept red-green-blue analogue and/or digital signals from electrical input terminals and output light corresponding to the intended colour. The measured results are intended to be used for the purpose of equipment-specific colour control in order to attain colour m
27、anagement in open multimedia systems and should generally be adequate for this purpose. However, in some cases, it may be necessary to consider additional factors not addressed in this part of IEC 61966, such as the actual environment in which the front projection display will be used, to achieve th
28、e desired colour reproduction. Readers of this standard are also encouraged to review IEC 61947-1 and IEC 61947-2, which apply to the measurement and documentation of key performance criteria for multimedia projectors. 5 EN 61966-6:2006 MULTIMEDIA SYSTEMS AND EQUIPMENT COLOUR MEASUREMENT AND MANAGEM
29、ENT Part 6: Front projection displays 1 Scope This part of IEC 61966 defines input test signals, measurement conditions, methods of measurement and reporting of the measured data, to be used for colour characterization and colour management of front projection displays in multimedia systems. Colour
30、control within equipment is outside the scope of this part. It does not specify limiting values for various parameters. 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
31、references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-845:1987, International Electrotechnical Vocabulary (IEV) Chapter 845: Lighting/CIE 17.4: 1987, International Lighting Vocabulary (Joint IEC/CIE publication) IEC 61947 (all parts), Electronic proj
32、ection Measurement and documentation of key performance criteria ISO/CIE 10527:1991, CIE standard colorimetric observers CIE 15.2:1986, Colorimetry 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-845 and CIE 17.4, as well as the following, appl
33、y. 3.1 background data corresponding to an image surrounding the target colour patch to be measured 3.2 colour control effort to convert equipment-dependent colour image data to equipment-independent data for a specific colour space including tone characteristics 3.3 colour patch, test area square c
34、olour image on a virtual screen of the front projection display subject to be measured for colour reproduction, in which input data for the red, green and blue channels are kept constant within the image area 6 EN 61966-6:2006 3.4 CRT colorimetrically well-controlled equipment using cathode ray tube
35、s to present colour images with digital inputs for reference 3.5 effective screen height vertical dimension of the effective screen area 3.6 effective screen area area where a picture can be produced 3.7 normalized (image) signal input signal normalized by its full-scale value, whose level is of int
36、erest in calculation and evaluation of colour control function within front projection display (see also equation (1) in 5.3) 3.8 uncertainty (of measurement) parameter, associated with the result of a measurement, that characterizes the dispersion of the values that could reasonably be attributed t
37、o the particular quantity subject to measurement (see also the IEC Guide to the expression of uncertainty in measurement,1995) 3.9 virtual screen perfect reflecting diffuser-to-image input data 4 Letters and symbols The notations consistently adopted in this part of IEC 61966 are summarized below. A
38、 display area ratio N number of bits in digital data for each channel M maximum integer for non-negative N -bits system; M = 12 NRD digital data applied for red channel GD digital data applied for green channel BD digital data applied for blue channel R normalized input level to red channel G normal
39、ized input level to green channel B normalized input level to blue channel X one of measured raw data using spectroradiometers and colorimeters corresponding to tristimulus values Y one of measured raw data using spectroradiometers and colorimeters corresponding to tristimulus values in candela per
40、square metre Z one of measured raw data using spectroradiometers and colorimeters corresponding to tristimulus values R linearized data for red channel taking into account the tone characteristics of the channel 7 EN 61966-6:2006 G linearized data for green channel taking into account the tone chara
41、cteristics of the channel B linearized data for blue channel taking into account the tone characteristics of the channel X one of the tristimulus values normalized by nY (candela per square metre) for peak white Y one of the tristimulus values normalized by nY (candela per square metre) for peak whi
42、te Z one of the tristimulus values normalized by nY(candela per square metre) for peak white 5 Conditions 5.1 Environmental conditions All measurements specified in this document shall be carried out in a dark room. Particular attention should be paid to prevent reflected illumination caused by the
43、ambient objects (desktop, wall, etc.) and direct illumination from light-emitting indicators of measuring instruments. An hour warm-up time should precede this measurement, if not specified by the manufacturer of the equipment. The mains voltage and frequency shall be at the rated value specified by
44、 the manufacturer. If the mains voltage fluctuates, a regulated power supply shall be used to maintain the supply voltage to within 5 % of the rated value. Other environmental conditions such as room temperature and relative humidity shall be reported together with the results of measurements. If ad
45、ditional environmental conditions are described in the manufacturers specifications, these should be taken into account. 5.2 Conditions for measurements Contrast, brightness and additional adjustments shall be set to the preset positions specified by the manufacturer. If the adjustment is set to ano
46、ther position than the preset, the position or corresponding value shall be reported with the results of measurements. Geometrical adjustment shall be set to default position. The arrangement of equipment for measurements shall be as shown in Figure 1. It incorporates a spectroradiometer or a non-co
47、ntact colorimeter, depending on the characteristics to be measured. The diagonal image size on the screen shall be set to the preset size specified by the manufacturer. If no size is specified, it shall be set to 102 cm. The height of front projection display (H) and the distance between the screen
48、and the head of the front projection display (L) shall be set to the preset positions specified by the manufacturer. They depend on the screen size. 8 EN 61966-6:2006 14 h H Ld32IEC 458/05 Key 1 Screen 2 Perfect reflecting diffuser 3 Front projection display 4 Spectroradiometer or colorimeter d Dist
49、ance between screen and measuring instrument h Effective screen height H Height projected image L Distance from the screen Figure 1 Equipment arrangement for measurements (side view The instrument optical axis should be perpendicular to the screen. If another measurement angle is recommended by the manufacturer, it shall be reported together with the results of measurements. The distance d shall be hdh 5,54 . A perfect refl
