1、BRITISH STANDARDBS EN ISO 10322-2:2006Ophthalmic optics Semi-finished spectacle lens blanks Part 2: Specifications for progressive power lens blanksThe European Standard EN ISO 10322-2:2006 has the status of a British StandardICS 11.040.70g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g
2、44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 10322-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 8 March 2006 BSI 8 March 2006ISBN
3、 0 580 47935 8National forewordThis British Standard is the official English language version of EN ISO 10322-2:2006. It is identical with ISO 10322-2:2006. It supersedes BS EN ISO 10322-2:1997 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee CH/172, Op
4、hthalmic optics, to Subcommittee CH/172/3, Spectacles, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in thi
5、s document may be found in the BSI Catalogueunder the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contr
6、act. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals fo
7、r change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii and iii, a blank
8、 page, pages 1 to 8, 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 CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 10322-2February 2006ICS 11.040.70
9、Supersedes EN ISO 10322-2:1997 English VersionOphthalmic optics - Semi-finished spectacle lens blanks - Part 2:Specifications for progressive power lens blanks (ISO 10322-2:2006)Optique ophtalmique - Verres de lunettes semi-finis - Partie2: Spcifications pour les verres progressifs (ISO 10322-2:2006
10、)Augenoptik - Einseitig fertige Brillenglasblanks - Teil 2:Festlegungen fr Gleitsicht-Brillenglasblanks (ISO 10322-2:2006)This European Standard was approved by CEN on 6 January 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving t
11、his EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (En
12、glish, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Cze
13、ch 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 COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN
14、 DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 10322-2:2006: EForeword This document (EN ISO 10322-2:2006) has been prepa
15、red by Technical Committee ISO/TC 172 “Optics and optical instruments“ in collaboration with Technical Committee CEN/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 tex
16、t or by endorsement, at the latest by August 2006, and conflicting national standards shall be withdrawn at the latest by August 2006. This document supersedes EN ISO 10322-2:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
17、bound to implement this European Standard: Austria, Belgium, 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, Switzerl
18、and and United Kingdom. Endorsement notice The text of ISO 10322-2:2006 has been approved by CEN as EN ISO 10322-2:2006 without any modifications. EN ISO 10322-2:2006Reference numberISO 10322-2:2006(E)INTERNATIONALSTANDARDISO10322-2Third edition2006-02-01Ophthalmic optics Semi-finished spectacle len
19、s blanks Part 2: Specifications for progressive power lens blanksOptique ophtalmique Verres de lunettes semi-finis Partie 2: Spcifications pour les verres progressifs EN ISO 10322-2:2006iiiiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national stand
20、ards 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 which a technical committee has been established has the right to be represented on that committee. International orga
21、nizations, governmental and non-governmental, in liaison with ISO, also take part 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
22、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 circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75
23、% 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 responsible for identifying any or all such patent rights. ISO 10322-2 was prepared by Technical Committee ISO/TC 172, Op
24、tics and photonics, Subcommittee SC 7, Ophthalmic optics and instruments.This third edition cancels and replaces the second edition (ISO 10322-2:1996), which has been technically revised. ISO 10322 consists of the following parts, under the general title Ophthalmic optics Semi-finished spectacle len
25、s blanks: Part 1: Specifications for single-vision and multifocal lens blanks Part 2: Specifications for progressive power lens blanks EN ISO 10322-2:2006blank1Ophthalmic optics Semi-finished spectacle lens blanks Part 2: Specifications for progressive power lens blanks 1 Scope This part of ISO 1032
26、2 specifies requirements for the optical and geometrical properties of semi-finished progressive power spectacle lens blanks. NOTE The requirements for semi-finished single-vision and multifocal lens blanks are given in ISO 10322-1. 2 Normative references The following referenced documents are indis
27、pensable 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. ISO 7944, Optics and optical instruments Reference wavelengthsISO 8598, Optics and optical in
28、struments FocimetersISO 13666, Ophthalmic optics Spectacle lenses Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 13666 and the following apply. 3.1focal-point-on-axis focimeter FOA focimeter focimeter in which the focal point of the beam
29、remains on the axis of the focimeter when the lens under test is measured at a point on the lens where prism is not zero See Figure 1. NOTE Examples of this design include all manual focusing focimeters and some automatic focimeters. 3.2infinite-on-axis focimeter IOA focimeter focimeter in which the
30、 collimated beam coincides with the focimeter axis and the focal point of the beam goes off the axis of the focimeter when the lens under test is measured at a point of the lens where prism is not zero See Figure 2. NOTE Some automatic focimeters use this design. EN ISO 10322-2:20062Key Key 1 focime
31、ters optical axis 1 focimeters optical axis 2 lens 2 lens 3 focimeter lens support 3 focimeter lens support 4 focal point on the optical axis 4 parallel incident beam coincides with optical axis Figure 1 FOA Focimeter Figure 2 IOA Focimeter 4 Classification Semi-finished lens blanks are classified a
32、s follows: a) single-vision semi-finished lens blanks; b) multifocal semi-finished lens blanks; c) progressive power semi-finished lens blanks. 5 Requirements The tolerances shall apply at a temperature of 23 C r 5 C. 5.1 Optical requirements for the finished surface 5.1.1 General The optical tolera
33、nces shall apply to the manufacturers stated values at the reference points of the semi-finished lens blank at one of the reference wavelengths specified in ISO 7944. EN ISO 10322-2:200635.1.2 Tolerances on the surface power of semi-finished progressive power lens blanks The tolerances on the surfac
34、e power as specified in Table 1 shall apply at the distance design reference point and shall be measured using the method described in 6.1. Table 1 Tolerances on the surface power Values in dioptres (D) Tolerance on the distance surface power Tolerance on astigmatic surface power specified by the ma
35、nufactureraDistance surface power of the principal meridian with the higher absolute surface power 122F F12F FW 0,00 and u 10,00 r 0,09 0,09 ! 10,00 and u 15,00 r 0,12 0,12 F1and F2are the surface powers of the principal meridians. aRelative to the intended surface astigmatism of the lens design. 5.
36、1.3 Tolerances on the addition power for progressive power lens blanks The tolerances on the addition power as specified in Table 2 shall apply at the design reference points and shall be measured using the method described in 6.2. Table 2 Tolerances on the addition power Values in dioptres (D) Addi
37、tion power Tolerance u 4,00 r 0,12 ! 4,00 r 0,18 5.2 Geometrical tolerances 5.2.1 Tolerances on the size of lens blanks The sizes of lens blanks are classified as follows: a) nominal size (dn): dimension(s), in millimetres, indicated by the manufacturer; b) effective size (de): actual dimension(s),
38、in millimetres, of the lens blank; c) usable size (du): dimension(s), in millimetres, of the area that is optically usable; 1) effective size, de:dn 1 mm u deu dn 2 mm 2) usable size, du:duW dn 1 mm for dnu 65 mm duW dn 2 mm for dn! 65 mm EN ISO 10322-2:200645.2.2 Tolerances on thickness 5.2.2.1 Cen
39、tre thickness The centre thickness of the lens blank, when measured at its geometric centre (unless otherwise stated by the manufacturer), shall be neither less than the minimum thickness stated by the manufacturer nor exceed this minimum thickness by more than 3 mm. 5.2.2.2 Edge thickness When meas
40、ured at the point stated by the manufacturer, the edge thickness of the lens blank shall be neither less than the minimum thickness stated by the manufacturer nor exceed this minimum thickness by more than 3 mm. 6 Test methods Alternative measurement methods are acceptable if shown to perform equiva
41、lently to the reference test methods in this clause. NOTE A lens blank measured with a focimeter calibrated for the mercury e-line reference wavelength can show a difference in power when compared to the same lens blank measured at the same point using a focimeter calibrated for the helium d-line. 6
42、.1 Determination of the convex surface power at the distance design reference point Determine the surface power at the distance design reference point by measurement of the concave spherical curve, thickness and back vertex power and then deriving, by calculation, the convex surface power. 6.2 Addit
43、ion power measurement 6.2.1 General Addition power shall be measured using a focimeter meeting the requirements of ISO 8598. The surface chosen for measurement shall be the progressive side unless otherwise stated by the manufacturer. There are two addition power measurement methods: front surface a
44、nd back surface measurement. NOTE Differences can occur between measurements made with different focimeters at points on a lens blank where prism is not zero. This is because of effects in the measurement, such as the different focimeter design (IOA, FOA), the non-linearity error of focimeters, the
45、positioning of the lens blank or the extent of tilt when the lens blank is placed on thesupport and the subjective focusing error. 6.2.2 Front surface method for addition power measurement Place the lens blank so that the front surface is against the focimeter lens support, position the lens blank a
46、t the near design reference point and measure the near power. Keeping the front surface against the focimeter support, position the lens blank at the distance design reference point and measure the distance power. Calculate the addition power as the difference between the near power and the distance
47、 power. Near power and distance power may be either the power measured using the nearer to vertical lines of the target or the spherical equivalent power. EN ISO 10322-2:200656.2.3 Back surface method for addition power measurement Place the lens blank so that the back surface is against the focimet
48、er lens support, position the lens blank at the near design reference point and measure the near power. Keeping the back surface against the focimeter support, position the lens blank at the distance design reference point and measure the distance power.Calculate the addition power as the difference
49、 between the near power and the distance power. Near and distance power may be either the power measured using the nearer to vertical lines of the target or the spherical equivalent power. 6.3 Material and surface quality See Annex A.7 Marking 7.1 Permanent marking The lens blank shall be permanently marked on the finished surface with at least the following: a) the alignment reference markings comprising two marks located 34 mm apart, equidistant to a vertical plane through the fitting point or prism reference poin
