1、BSI Standards PublicationBS EN ISO 8624:2011+A1:2015Ophthalmic optics Spectacle frames Measuring system and terminology (ISO 8624:2011)BS EN ISO 8624:2011+A1:2015 BRITISH STANDARDNational forewordA list of organizations represented on this subcommittee can beobtained on request to its secretary.This
2、 publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication.ISBN 978 0 580 82849 2ICS 11.040.70Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the author
3、ity of theStandards Policy and Strategy Committee on 28 February 2011.Amendments/corrigenda issued since publicationDate Text affected30 September 2015 Implementation of ISO amendment 1:2015with CEN endorsement A1:2015 The British Standards Institution 2015.Published by BSI Standards Limited 2015 Th
4、e UK participation in its preparation was entrusted by Technical Committee CH/172, Ophthalmic Optics, to Subcommittee CH/172/3, Spectacles.This British Standard is the UK implementation of EN ISO 8624:2011+A1:2015. It supersedes BS EN ISO 8624:2011 which is withdrawn.The start and finish of text int
5、roduced or altered by amendmenttext carry the number of the ISO amendment. For example, text altered by ISO amendment 1 is indicated by !“.is indicated in the text by tags. Tags indicating changes to ISO EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8624:2011+A1 August 2015 ICS 11.040.70
6、English Version Ophthalmic optics - Spectacle frames - Measuring system and terminology (ISO 8624:2011) Optique ophtalmique - Montures de lunettes - Systme de mesure et terminologie (ISO 8624:2011) Augenoptik - Brillenfassungen - Masystem und Begriffe (ISO 8624:2011) This European Standard was appro
7、ved 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 European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
8、 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 (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language
9、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, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
10、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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 2
11、011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8624:2011: E3 Foreword This document (EN ISO 8624:2011) has been prepared by Technical Committee ISO/TC 172 “Optics and photonics“ in collaboration with Technical Committee CE
12、N/TC 170 “Ophthalmic 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 late
13、st by August 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 patent rights. This document supersedes EN ISO 8624:2002. According to the CEN/CEN
14、ELEC 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, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuan
15、ia, Luxembourg, Malta, 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. This document (EN ISO 8624:2011/A1:2015)
16、 has been prepared by Technical Committee ISO/TC 172 “Optics and photonics“ in collaboration with Technical Committee CEN/TC 170 “Ophthalmic optics” the secretariat of which is held by DIN. This Amendment to the European Standard EN ISO 8624:2011 shall be given the status of a national standard, eit
17、her by publication of an identical text or by endorsement, at the latest by February 2016, and conflicting national standards shall be withdrawn at the latest by February 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN a
18、nd/or CENELEC shall not be held responsible for identifying any or all such patent rights. 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, Cz
19、ech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingd
20、om. Endorsement notice The text of ISO 8624:2011/Amd 1:2015 has been approved by CEN as EN ISO 8624:2011/A1:2015 without any modification. to amendment A1 Foreword BS EN ISO 8624:2011+A1:2015 EN ISO 8624:2011+A1:2015 (E)INTERNATIONAL STANDARD ISO 2011 All rights reserved 1Ophthalmic optics Spectacle
21、 frames Measuring system and terminology 1 Scope This International Standard specifies a measuring system for spectacle frames and related terminology. It is applicable to fronts which are intended to be symmetrical. 2 Terms, definitions and symbols For the purposes of this document, the following t
22、erms, 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 vertical centreline (A.2) of the rectangular box which circumscribes the lens shape (A.10) See Figure 1. 2.2 horizontal boxed lens size ho
23、rizontal 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 having a significant face form angle (A.13), the horizontal boxed lens size shall be measured in the “plane” of the individual lens shape.
24、 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. 2.4 boxed centre distance distance between centres c distance between the boxed centres (2.1) See Figure 1. BS EN ISO 8624:2011+A1:2
25、015 ISO 8624:2011+A1:2015 (E)2 ISO 2011 All rights reservedNOTE For spectacle frames 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 Figur
26、e 4. 2.5 distance between lenses d horizontal distance between the nasal vertical sides 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 lense
27、s”. 2.6 overall length of side l length from the intersection of the dowel screws axis 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
28、) to the front or to that part of the side that is intended to be attached to the front, 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 i
29、n Clause 2. If codes are used in spectacle frame documentation, the symbols given for 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 a
30、nd adjustment of spectacle frames as well as for the exact mounting of spectacle lenses 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 fr
31、ont. The upper tangent is common to both lens shapes and shall be regarded as horizontal, 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. BS EN ISO 8624:201
32、1+A1:2015 ISO 8624:2011+A1:2015 (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
33、 of 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 BS EN ISO 8624:2011+A1:2015 ISO 8624:2011+A1:2015 (E)4 ISO 2011 All rights reservedDimensions in millimetres Key l o
34、verall 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 angle BS EN ISO 8624:2011+A1:2015 ISO 8624:2011+A1:2015 (E) ISO 2011 All right
35、s reserved 5Annex A (informative) Complementary terms and definitions Although the terms defined in this annex are not an integral part of the 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 t
36、he 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 distance 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 di
37、stance from the nasal vertical sides of the rectangular boxes which circumscribe the right and left spectacle lens shapes (A.10) See Figure 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 widt
38、h 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 adjustable 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
39、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, measured 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 joi
40、nt to the intersection point of the axis of the tip and side, measured along the axis of the side BS EN ISO 8624:2011+A1:2015 ISO 8624:2011+A1:2015 (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 s
41、ide See Figure 2. A.9 effective diameter diameter of the smallest 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
42、 with the nasal side and the horizontal indicated NOTE “Lens 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 gr
43、eater than the width of the groove in the front; for a spectacle 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
44、two centrelines are not parallel to each other. A.12 plane 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 manu
45、facturer for display purposes. A.13 face form angle angle 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
46、 closer to the head than the plane of the spectacle front (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 an
47、d L. BS EN ISO 8624:2011+A1:2015 ISO 8624:2011+A1:2015 (E) ISO 2011 All rights reserved A.14side angle, en GBangle of side, en GBframe pantoscopic angle, en USangle in the vertical plane, when the side is opened, between the perpendicular to a reference line touching the rear surface of the upper an
48、d lower rims along the vertical centreline and the line joining the middle of the joint to the point on the lower edge of the side that is assumed to make contact with the top of the earNote 1 to entry: See Figure A.5.Note 2 to entry: When the spectacle frame is of semi-rimless or rimless constructi
49、on, the reference line should be taken as the line joining the rear surface of the upper and lower edges of a plano or demonstration or dummy lens along the vertical centreline.Note 3 to entry: Unless otherwise stated, the side angle is regarded as positive if downwards from the perpendicular to the reference line.Note 4 to entry: From ISO 7998, the following are the equivalent terms in other languages: French: angle dinclinaison; German: Inklinationswinkel; Italian: inclinazione; Spanish: inclinacin.!“7BS EN ISO 862
