1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 6719:2010Anodizing of aluminium andits alloys Measurementof reflectance characteristicsof aluminium surfaces usingintegrating-sphere instrumentsBS EN ISO 6719:2010 BRIT
2、ISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 6719:2010.It supersedes BS EN 12373-12:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee STI/32, Anodic oxidation coatings on aluminium.A list of organizations repr
3、esented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 66002 3ICS 25.220.20Compliance with a British Standard cannot confer i
4、mmunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2010.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6719 October 2010 ICS 25.220.20 Supers
5、edes EN 12373-12:2000English Version Anodizing of aluminium and its alloys - Measurement of reflectance characteristics of aluminium surfaces using integrating-sphere instruments (ISO 6719:2010) Anodisation de laluminium et de ses alliages - Mesurage des caractristiques de rflectivit des surfaces da
6、luminium laide dinstruments sphre dintgration (ISO 6719:2010) Anodisieren von Aluminium und Aluminiumlegierungen - Messung der Reflexionseigenschaften von Aluminiumoberflchen mit Hilfe Ulbrichtscher Kugeln (ISO 6719:2010) This European Standard was approved by CEN on 14 October 2010. CEN members are
7、 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 concerning such national standards may be obtained on application to t
8、he CEN Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN Management Centre has the same
9、 status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
10、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any mean
11、s reserved worldwide for CEN national Members. Ref. No. EN ISO 6719:2010: EBS EN ISO 6719:2010EN ISO 6719:2010 (E) 3 Foreword The text of ISO 6719:2010 has been prepared by Technical Committee ISO/TC 79 “Light metals and their alloys” of the International Organization for Standardization (ISO) and h
12、as been taken over as EN ISO 6719:2010 by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by
13、 April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such paten
14、t rights. This document supersedes EN 12373-12:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finlan
15、d, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 6719:2010 has been approved by CEN as a EN ISO
16、 6719:2010 without any modification. BS EN ISO 6719:2010ISO 6719:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Principle1 4 Apparatus.1 4.1 General .1 4.2 Geometrical specifications of the apparatus2 4.3 Specular-included and specular-excluded d
17、eterminations 2 4.4 Irradiation beam.2 4.5 Housing 3 5 Calibration and operation of the reflectometer 7 5.1 General .7 5.2 Reference standards .8 6 Measurement .8 7 Expression of results8 7.1 Calculation of reflectance values 8 8 Test report9 BS EN ISO 6719:2010ISO 6719:2010(E) iv ISO 2010 All right
18、s reservedForeword ISO (the International Organization 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
19、 which a technical committee has been established has 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 a
20、ll matters of electrotechnical standardization. International 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
21、 circulated to the member bodies for voting. Publication 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 re
22、sponsible for identifying any or all such patent rights. ISO 6719 was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee SC 2, Organic and anodic oxidation coatings on aluminium. This second edition cancels and replaces the first edition (ISO 6719:1986), which has
23、 been technically revised. BS EN ISO 6719:2010INTERNATIONAL STANDARD ISO 6719:2010(E) ISO 2010 All rights reserved 1Anodizing of aluminium and its alloys Measurement of reflectance characteristics of aluminium surfaces using integrating-sphere instruments 1 Scope This International Standard specifie
24、s a method of measuring the total and diffuse luminous reflectance characteristics of aluminium surfaces, using integrating-sphere instruments. The method described is also applicable to the measurement of specular reflectance (principal gloss value), specularity and diffuseness. The method is unsui
25、table for use with lighting reflectors. 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 amendme
26、nts) applies. ISO 7724-2, Paints and varnishes Colorimetry Part 2: Colour measurement ISO 11664-2:2007, Colorimetry Part 2: CIE standard illuminants 3 Principle Measurement, using an integrating-sphere reflectometer, of the total and diffuse reflected light at different angles of incidence, close to
27、 the normal surface of a test specimen. 4 Apparatus 4.1 General The reflectometer, suitable for measuring the reflectance of metallic surfaces, consists of a suitable light source, an integrating sphere and a photometer comprising a photo-electric cell with a signal multiplier and recording, indicat
28、ing, or computing equipment. Figures 1 to 5 show the optical systems and geometry of typical instruments. The incident light beam is allowed to fall onto the specimen and is reflected into the sphere, the interior of which is white, where it is automatically integrated. The average light flux, as me
29、asured by the photometer, is a measure of the quantity of the reflected light. The spectral product of the light source, spectral filters, and spectral response of the light detector shall closely simulate the spectral product of the CIE source C (or D65) and the spectral luminous efficiency V() for
30、 photopic vision, in accordance with ISO 11664-2. BS EN ISO 6719:2010ISO 6719:2010(E) 2 ISO 2010 All rights reserved4.2 Geometrical specifications of the apparatus 4.2.1 Integrating sphere The interior of the sphere, white-coated and fitted with a device to permit measurement of reflectance, either
31、including or excluding specular reflectance, serves to collect the reflected light flux. Any diameter of sphere is satisfactory, provided that the total port area does not exceed 5 % of the total internal surface. The internal surface shall be diffusing and of a highly reflective white for the whole
32、 of the visible spectrum. The entrance and specimen ports of the instrument shall be centred on the same great circle with an arc of more than 170 between their centres. The specimen port shall subtend 8 1 of arc in relation to the centre of the entrance port. The irradiating beam shall pass through
33、 the centreline of the entrance and specimen ports. A photometer shall be positioned on the sphere at 90 0,5 from the entrance port. 4.3 Specular-included and specular-excluded determinations 4.3.1 Pivotable sphere In the pivotable-sphere type of instrument (Figures 1 to 4), the sphere can turn abou
34、t a vertical axis passing through the specimen port, rotating 9 1 to provide for the measurements of specular-included or total reflectance (Q) and specular-excluded or diffuse reflectance (Qd). 4.3.2 Fixed sphere (Type 1) In the fixed-sphere Type 1 instrument, the specimen is held so that the incid
35、ent beam falls on it at an angle of 9 1 to the normal. A port, of the same dimensions as the entrance port, is provided in order to accept the specular reflection. Interchangeable caps are provided for this port, a black one to absorb the specular reflection for diffuse reflectance (Qd) measurements
36、 and one coated with the same material as the inside of the sphere for total reflectance (Q) measurements. 4.3.3 Fixed sphere (Type 2) In the fixed-sphere Type 2 instrument (see Figure 5), the sphere is fixed and only the specimen can be inclined. A wedge, as shown in Figure 5, designed to exclude a
37、mbient light, and white-coated like the sphere interior, allows adjustment of the angle of the specimen surface. For measurement of diffuse reflectance (Qd), the specimen surface is adjusted to be perpendicular to the incident beam. For measurement of total reflectance (Q), the specimen surface is i
38、nclined at 9 1 from the normal incident beam by insertion of the wedge. 4.4 Irradiation beam The light beam shall be substantially unidirectional with a maximum angle of any ray being less than 3 from the axis of the beam. It shall not be vignetted at either port. The incident light beam shall have
39、a circular cross-section concentric with the specimen port and shall have an annulus of 1,3 0,1 subtended at the entrance port. On reflection from a first surface mirror, the specular-excluded beam shall be concentric with the centre of the port when the sphere is in the specular-excluded position.
40、The mirror-reflected beam shall have a concentric circle with the port and shall have an annulus of 0,6 0,2 subtended at the level of the exit port. The size of the exit port shall be not more than 0,1 greater than that of the annulus. NOTE The dimensions of this beam can be most easily measured at
41、a point beyond the sphere at a distance corresponding to the diameter of the integrating sphere, with no obstruction at either port. However, this will not ensure alignment when specularly reflected. BS EN ISO 6719:2010ISO 6719:2010(E) ISO 2010 All rights reserved 34.5 Housing A housing shall be pro
42、vided to prevent ambient light from entering the entrance port. Key 1 photoelectric cell 7 mirror 2 test piece 8 light source 3 lens 9 lens 4 0 incidence for diffuse reflectance 10 aperture 5 9 1 incidence for total reflectance 11 spectral filter 6 photoelectric cell for comparison aTo the amplifier
43、s and recorders. Figure 1 Schematic optical plan of one type of pivotable-sphere reflectometer BS EN ISO 6719:2010ISO 6719:2010(E) 4 ISO 2010 All rights reservedKey 1 sphere in axial position 8 light beam at exit port 2 sphere in pivoted position 9 source 3 test piece 10 convex lens 4 specular pivot
44、 11 specular filter 5 specular beam sphere in pivoted position 12 aperture 6 incoming light beam from the axial position 13 lens 7 incoming light beam at entrance port (axis positions) 14 receiver Figure 2 Schematic optical plan of another type of pivotable-sphere reflectometer BS EN ISO 6719:2010IS
45、O 6719:2010(E) ISO 2010 All rights reserved 5Key 1 spectral filter 6 lens 2 lens 7 in pivoted position 3 test piece 8 in axial position 4 sphere pivot 9 recorder 5 light source Figure 3 Geometry of typical pivotable-sphere reflectometers BS EN ISO 6719:2010ISO 6719:2010(E) 6 ISO 2010 All rights rese
46、rvedKey 1 light source 4 lens 2 spectral filter 5 receiver 3 lens 6 test piece Figure 4 Geometry of typical pivotable-sphere reflectometers (specular-excluded) BS EN ISO 6719:2010ISO 6719:2010(E) ISO 2010 All rights reserved 7Key 1 receiver 4 specular beam 2 test piece 5 wedge 3 wedge (white-coated)
47、 aExit port. Figure 5 Geometry of a typical fixed-sphere (Type 2), specimen-inclining reflectometer (specular-excluded) 5 Calibration and operation of the reflectometer 5.1 General The reflectometer shall be operated and calibrated in accordance with the manufacturers instructions. BS EN ISO 6719:20
48、10ISO 6719:2010(E) 8 ISO 2010 All rights reserved5.2 Reference standards 5.2.1 A white primary standard shall be employed, consisting of a pressed barium sulfate powder tablet prepared in accordance with ISO 7724-2. 5.2.2 The zero of the instrument shall be calibrated using a black-surface or light-
49、trap standard by recording the values of total and diffuse reflectance. A black-velvet textile surface should read 0,2 % to 0,5 % of the total reflectance. 5.2.3 A first surface mirror, calibrated for both total and diffuse reflectance against the primary standard, shall be used as a working standard. The total reflectance shall be greater than 90 % and the diffuse reflectance 0,2 % to 1,5 %. 6 Measurement Take three measurements of both total and diffuse reflectance on
