1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 8624:2011Ophthalmic optics Spectacle frames Measuring system and terminology (ISO 8624:2011)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Unc
2、ontrolled Copy, (c) BSIBS EN ISO 8624:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 8624:2011.It supersedes BS EN ISO 8624:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee CH/172/3, Spectacles.A list
3、of organizations represented 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 2011ISBN 978 0 580 65525 8ICS 11.040.70Compliance with a British Sta
4、ndard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2011.Amendments issued since publicationDate Text affectedLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, U
5、ncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8624 February 2011 ICS 11.040.70 Supersedes EN ISO 8624:2002English Version Ophthalmic optics - Spectacle frames - Measuring system and terminology (ISO 8624:2011) Optique ophtalmique - Montures de lunettes - Systme de
6、 mesure et terminologie (ISO 8624:2011) Augenoptik - Brillenfassungen - Masystem und Begriffe (ISO 8624:2011) This European Standard was approved by CEN on 5 February 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe
7、an 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 versions
8、(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, Belg
9、ium, 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 COMM
10、ITTEE 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 8624:2011: ELicensed Copy: Wang B
11、in, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011 EN ISO 8624:2011 (E) 3 Foreword This document (EN ISO 8624:2011) has been prepared by Technical Committee ISO/TC 172 “Optics and photonics“ in collaboration with Technical Committee CEN/TC 170 “Ophthalm
12、ic optics” the secretariat of which is held by DIN. 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 August 2011, and conflicting national standards shall be withdrawn at the latest by August 2011.
13、 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 patent rights. This document supersedes EN ISO 8624:2002. According to the CEN/CENELEC Internal Regu
14、lations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Ma
15、lta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 8624:2011 has been approved by CEN as a EN ISO 8624:2011 without any modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/
16、06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011ISO 8624:2011(E) ISO 2011 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is
17、normally carried out through ISO technical committees. Each member body interested in a subject for 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
18、in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all 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 pre
19、pare International Standards. Draft International Standards adopted by the technical committees are 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
20、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 rights. ISO 8624 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 7, Ophthalmic optics and instruments. This third
21、edition cancels and replaces the second edition (ISO 8624:2002), which has been technically revised. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontro
22、lled Copy, (c) BSIBS EN ISO 8624:2011INTERNATIONAL STANDARD ISO 8624:2011(E) ISO 2011 All rights reserved 1Ophthalmic optics Spectacle frames Measuring system and terminology 1 Scope This International Standard specifies a measuring system for spectacle frames and related terminology. It is applicab
23、le to fronts which are intended to be symmetrical. 2 Terms, definitions and symbols For the purposes of this document, the following terms, definitions and symbols apply. For complementary terms and definitions, see Annex A. 2.1 boxed centre C intersection of the horizontal centreline (A.1) and vert
24、ical centreline (A.2) of the rectangular box which circumscribes the lens shape (A.10) See Figure 1. 2.2 horizontal boxed lens size horizontal lens size a distance between the vertical sides of the rectangular box which circumscribes the lens shape (A.10) See Figure 1. NOTE For spectacle frames havi
25、ng a significant face form angle (A.13), the horizontal boxed lens size shall be measured in the “plane” of the individual lens shape. 2.3 vertical boxed lens size vertical lens size b distance between the horizontal sides of the rectangular box which circumscribes the lens shape (A.10) See Figure 1
26、. 2.4 boxed centre distance distance between centres c distance between the boxed centres (2.1) See Figure 1. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011ISO 8624:2011(E) 2 ISO 2011 All rights reservedNOTE For spectacle frames
27、 having a significant face form angle (A.13), the boxed centre distance shall be measured between the boxed centres (2.1) marked on the back surfaces of lenses of appropriate base curve fitted to the frame. See Figure 4. 2.5 distance between lenses d horizontal distance between the nasal vertical si
28、des of the rectangular boxes which circumscribe the right and left lens shapes (A.10) See Figure 1. NOTE Former users of the obsolete datum system should note that this is the datum measurement “minimum between lenses”. 2.6 overall length of side l length from the intersection of the dowel screws ax
29、is with the median plane of the joint to the end of the side and parallel to the centreline of it, the drop having been straightened See Figure 2. NOTE For sides without a joint, the side should be held open at (0590) to the front or to that part of the side that is intended to be attached to the fr
30、ont, and the length measurement is from the end of the side to the front less 10 mm. See Figure 3. 3 Measuring system The measuring system for spectacle frames shall be in accordance with Figures 1 to 4, as defined in Clause 2. If codes are used in spectacle frame documentation, the symbols given fo
31、r the terms defined in Clause 2 shall be employed. The measuring system comprises several horizontal and vertical dimensions and reference points. The knowledge of these is necessary for the manufacturing, ordering and adjustment of spectacle frames as well as for the exact mounting of spectacle len
32、ses into spectacle frames. The measuring system is based on the boxed lens (boxing) system, which uses a rectangle tangential to the lens shape as the basis for the determination of the dimensions of the spectacle front. The upper tangent is common to both lens shapes and shall be regarded as horizo
33、ntal, except in the case of spectacle frames having a significant face form angle, for which the line touching the uppermost edges of the right and left lens shapes shall be regarded as horizontal. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS
34、EN ISO 8624:2011ISO 8624:2011(E) ISO 2011 All rights reserved 3Key C boxed centre a horizontal lens size b vertical lens size c boxed centre distance d distance between lenses Figure 1 Measurements related to spectacle frames Spectacle fronts Key 1 axis of hinge or dowel screw axis 2 median plane of
35、 joint 3 centreline of side 4 length to bend (see Annex A) 5 length of drop (see Annex A) l overall length of side Figure 2 Measurements related to spectacle frames Spectacle sides Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011I
36、SO 8624:2011(E) 4 ISO 2011 All rights reservedDimensions in millimetres Key l overall length of side Figure 3 Measurement of overall length of side for sides without a joint Key C boxed centre c boxed centre distance Figure 4 Measurement of boxed centre distance in frame having significant face form
37、 angle Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011ISO 8624:2011(E) ISO 2011 All rights reserved 5Annex A (informative) Complementary terms and definitions Although the terms defined in this annex are not an integral part of t
38、he boxed lens system, they are frequently used in relation to lens shape or spectacle frames. A.1 horizontal centreline line located at an equal distance from the two horizontal tangents of the boxed lens (boxing) system See Figures A.1 and A.2. A.2 vertical centreline line located at an equal dista
39、nce from the vertical sides of the rectangular box which circumscribes the lens shape (A.10) See Figure A.1. A.3 vertical symmetry axis line located at equal distance from the nasal vertical sides of the rectangular boxes which circumscribe the right and left spectacle lens shapes (A.10) See Figure
40、A.1. A.4 bridge width line reference line for bridge measurements positioned 5 mm below the horizontal centreline (A.1) See Figures A.1 and A.2. A.5 bridge width minimum distance between the rims measured along the bridge width line (A.4) See Figures A.1 and A.2. NOTE For spectacle frames with adjus
41、table pads, bridge width applies to the rims, not the pads; for rimless spectacles, it applies to the minimum distance between the nasal edges of the spectacle lenses measured along the bridge width line. A.6 bridge height distance from the bridge width line (A.4) to the lower edge of the bridge, me
42、asured along the vertical symmetry axis (A.3) See Figure A.1. A.7 length to bend length from the intersection of the dowel axis with the median plane of the joint to the intersection point of the axis of the tip and side, measured along the axis of the side Licensed Copy: Wang Bin, ISO/EXCHANGE CHIN
43、A STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011ISO 8624:2011(E) 6 ISO 2011 All rights reservedSee Figure 2. A.8 length of drop length from the intersection point of the axes of the side and tip to the end of the side See Figure 2. A.9 effective diameter diameter of the s
44、mallest circular uncut lens that can be glazed to the lens shape (A.10) with its geometrical centre positioned at the boxed centre (2.1) See Figure A.3. NOTE This includes an allowance for edging. A.10 lens shape outline of the lens periphery with the nasal side and the horizontal indicated NOTE “Le
45、ns shape” refers to the shape of hypothetical spectacle lenses with: for a spectacle lens having a bevelled edge, the outermost edge of the spectacle lens, the lens having a bevel which includes a symmetrical angle of 120 and a bevel width greater than the width of the groove in the front; for a spe
46、ctacle lens having a flat or grooved edge, the outermost edge of the spectacle lens. A.11 plane of the spectacle front plane containing the vertical centrelines of the right and left boxed lens shapes NOTE This may be an approximation if the two centrelines are not parallel to each other. A.12 plane
47、 of the lens shape plane tangential to the front surface of a plano or demonstration or dummy lens at its boxed centre (2.1), when mounted in the frame NOTE A demonstration lens or dummy lens is the plano lens mounted in the frame by the manufacturer for display purposes. A.13 face form angle angle
48、between the plane of the spectacle front and the plane of the right lens shape, or of the left lens shape See Figure A.4. NOTE 1 The right or left face form angle is regarded as positive if the temporal side of the right or left lens plane is closer to the head than the plane of the spectacle front
49、(A.11). NOTE 2 The face form angles are often measured and specified as the average of the right (R) and left (L) angles, but the frame may be adjusted for a specific wearer so that they differ, and the angles should then be specified as R and L. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 03:53, Uncontrolled Copy, (c) BSIBS EN ISO 8624:2011ISO 8624:2011(E) ISO 2011 All rights reserved 7Dimensions in millimetres Key 1 horizontal centreline 2 vertical centreline 3 vertical symmetry axis 4 bridge w
