EN ISO 10322-1:1997

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Augenoptik - Einseitig fertige Brillenglasblanks - Teil 1: Anforderungen an Ein- und Mehrstärken-Brillenglasblanks (ISO 10322-1:1996)Optique ophtalmique - Verres de lunettes semi-finis - Partie 1: Spécifications pour les verres unifocaux et multifocaux (ISO 10322-1:1996)Ophthalmic optics - Semi-finished spectacle lens blanks - Part 1: Specifications for single-vision and multifocal lens blanks (ISO 10322-1:1996)11.040.70Oftalmološka opremaOphthalmic equipmentICS:Ta slovenski standard je istoveten z:EN ISO 10322-1:1997SIST EN ISO 10322-1:2000en01-januar-2000SIST EN ISO 10322-1:2000SLOVENSKI
STANDARD



SIST EN ISO 10322-1:2000



SIST EN ISO 10322-1:2000



SIST EN ISO 10322-1:2000



SIST EN ISO 10322-1:2000



SIST EN ISO 10322-1:2000



INTERNATIONAL STANDARD Is0 10322-l Second edition 1996-02-01 Ophthalmic optics - Semi-finished spectacle lens blanks - Part 1: Specifications for single-vision and multifocal lens blanks Optique ophtalmique - Verres de lunettes semi-finis - Partie 7: Spkifications pour /es verres unifocaux et multifocaux Reference number IS0 10322-I : 1996(E) SIST EN ISO 10322-1:2000



IS0 10322=1:1996(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 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 in the work. IS0 collaborates closely with the International Electrotechnical Commission (I EC) on all matters of electrotechnical standardization. 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. International Standard IS0 10322-I was prepared by Technical Committee ISO/TC 172, Optics and optical instruments, Subcommittee SC 8, Ophthalmic optics. This second edition cancels and replaces the first edition (IS0 10322-I :I 991), which has been technically revised. IS0 10322 consists of the following parts, under the general title Ophthalmic optics - Semi-finished spectacle lens blanks: - Part 7: Specifications for single-vision and multifocal lens blanks - Part 2: Specifications for progressive power lens blanks Annex A of this part of IS0 10322 is for information only. 0 IS0 1996 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 10322-1:2000



INTERNATIONAL STANDARD 0 ISO IS0 10322=1:1996(E) Ophthalmic optics - Semi-finished spectacle lens blanks - Part 1: Specifications for single-vision and multifocal lens blanks 1 Scope This part of IS0 10322 specifies requirements for the optical and geometrical properties of semi-finished single-vision and multifocal spectacle lens blanks. The requirements for semi-finished progressive power lens blanks are given in IS0 10322-2. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 10322. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 10322 are encouraged to investi- gate the possibility of applying the most recent edi- tions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 7944:1984, Optics and optical instruments - Reference wavelengths. I SO 13666:--J’, Ophthalmic optics - Spectacles lenses - Vocabulary. 3 Definitions For the purposes of this part of IS0 10322, the defi- nitions given in IS0 13666 apply. 1) To be published. 4 Classification Semi-finished lens blanks are classified as 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 + 5 "C. - 5.1 Optical requirements on the finished surface 5.1 .I General The optical tolerances shall apply at the reference points of the semi-finished lens blank at one of the reference wavelengths specified in IS0 7944. The as-worn position can result in the apparent power to the eye being different from that determined as a result of the focimeter measurements. If the manufacturer has applied corrections to com- pensate for the as-worn position, then the tolerances shall apply to the corrected value and this corrected value shall be stated by the manufacturer on the package or in an accompanying document (see 7.1). SIST EN ISO 10322-1:2000



IS0 10322=1:1996(E) 0 IS0 5.1.2 Tolerances on the surface power of semi-finished single-vision and multifocal lens blanks The tolerances on the surface power as specified in table 1 shall apply at the design reference point and shall be measured using the method described in 61 . . 5.1.3 Uniformity of the surface power of lenses with spherical surfaces Over a zone of 40 mm diameter centred around the design reference point, the surface power shall not deviate by more than 0,06 D from the surface power measured at the design reference point. The uni- formity shall be determined using one of the methods described in 6.2. 5.1.4 Tolerances on the surface cylindrical power The tolerances on the surface cylindrical power as specified in table2 shall apply at the design reference point and shall be measured using the method de- scribed in 6.1. 5.1.5 Tolerances on the addition power and prismatic power for multifocal lens blanks 5.1.5.1 Tolerances on the addition power The tolerances on the addition power as specified in table3 shall apply at the design reference points and shall be measured using the method described in 63 . . 5.1.5.2 Tolerances on the prism in the segment The deviation from the prism shall not exceed 0,25 A when measured at the near design reference point. Table 1 - Tolerances on the surface power for nominally spherical surfaces Values in dioptres (D) Surface power of the meridian with the highest absolute surface power 3 0,OO and < 2,00 Tolerance on surface power Tolerance on astigmatism for spherical surfaces F, + F2 2 IF, -41 + 0,09 - 0,04 I + 0,06 - I 0,04 I + 0,09 - 0,04 I If: 0,12 0,06 I -F, and F2 are the surface powers of the principal meridians. + 0,25 - 0,06 I Table 2 - Tolerances on the surface cylindrical Table 3 - Tolerances on the addition power power for cylindrical surfaces Values in dioptres (D) Values in dioptres (D) Cylindrical power > 0,25 and < 4,00 > 4,00 and < 6,00 > 6,00 Tolerance + 0,06 - + 0,09 - + 0,12 - 2 SIST EN ISO 10322-1:2000



0 IS0 IS0 10322=1:1996(E) 52 . Geometrical tolerances 5.2.1 Tolerances on the size of lens blanks If sold as a matched pair, each of the segment di- mensions (width, depth and intermediate depth) shall not deviate from its nominal value by more than -#- 0,7 mm. - The sizes of lens blanks are classified as follows: 5.2.3.2 Positions a) nominal size (d,): dimension(s) in millimetres indi- cated by the manufacturer; b) effective size (d,): actual dimension(s) in milli- metres of the lens blank; c) usable size (d,): dimension(s) in millimetres of the area that is opt
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