EN ISO 8980-1:1997

Ophthalmic optics - Uncut finished spectacle lenses - Part 1: Specifications for single-vision and multifocal lenses (ISO 8980-1:1996)

Specification of minimum requirements which are necessary for a sufficient quality of function.

Augenoptik - Rohkantige fertige Brillengläser - Teil 1: Anforderungen an Ein- und Mehrstärken-Brillegläser (ISO 8980-1:1996)

Dieser Teil von ISO 8980 legt Anforderungen an die optischen und geometrischen Eigenschaft von rohkantigen fertigen Ein- und Mehrstärken-Brillengläsern fest.

Optique ophtalmique - Verres de lunettes finis non détourés - Partie 1: Spécifications pour les verres unifocaux et multifocaux (ISO 8980-1:1996)

Očesna optika - Nebrušena zglajena stekla očal - 1. del: Specifikacije za enogoriščna in večgoriščna stekla (ISO 8980-1:1996)

General Information

• Status: Withdrawn
• Publication Date: 22-Jul-1997
• Withdrawal Date: 31-Jan-2004
• ICS: 11.040.70 - Ophthalmic equipment
• Technical Committee: CEN/TC 170 - Ophthalmic optics
• Drafting Committee: CEN/TC 170 - Ophthalmic optics
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Feb-2004
• Completion Date: 01-Feb-2004
• Ref Project: SIST EN ISO 8980-1:2000 - Ophthalmic optics - Uncut finished spectacle lenses - Part 1: Specifications for single-vision and multifocal lenses (ISO 8980-1:1996)

Relations

• Replaced By: EN ISO 8980-1:2004 - Ophthalmic optics - Uncut finished spectacle lenses - Part 1: Specifications for single-vision and multifocal lenses (ISO 8980-1:2004)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 8980-1:2000
01-januar-2000
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HQRJRULãþQDLQYHþJRULãþQDVWHNOD,62
Ophthalmic optics - Uncut finished spectacle lenses - Part 1: Specifications for single-
vision and multifocal lenses (ISO 8980-1:1996)
Augenoptik - Rohkantige fertige Brillengläser - Teil 1: Anforderungen an Ein- und
Mehrstärken-Brillegläser (ISO 8980-1:1996)
Optique ophtalmique - Verres de lunettes finis non détourés - Partie 1: Spécifications
pour les verres unifocaux et multifocaux (ISO 8980-1:1996)
Ta slovenski standard je istoveten z: EN ISO 8980-1:1997
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
SIST EN ISO 8980-1:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 8980-1:2000

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SIST EN ISO 8980-1:2000

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SIST EN ISO 8980-1:2000

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SIST EN ISO 8980-1:2000

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SIST EN ISO 8980-1:2000

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SIST EN ISO 8980-1:2000
INTERNATI0N.A.L IS0
STANDARD 8980-I
Second edition
1996-02-01
Ophthalmic optics - Uncut finished
spectacle lenses -
Part 1:
Specifications for single-vision and multifocal
lenses
Verres de lunettes finis non d&our& -
Op tique oph talmique -
Partie 1: Spkcifications pour /es verres unifocaux et multifocaux
Reference number
IS0 8980-I :1996(E)

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SIST EN ISO 8980-1:2000
IS0 8980=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
(IEC) 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 8980-I was prepared by Technical Committee
lSO/TC 172, Optics and optical instruments, Subcommittee SC 8,
Ophthalmic optics.
This second edition cancels and replaces the first edition
(IS0 8980-I :I 992), which has been technically revised.
IS0 8980 consists of the following parts, under the general title
Ophthalmic optics - Uncut finished spectacle lenses:
- Part 7: Specifications for single-vision and multifocal lenses
- Part 2: Specifications for progressive power lenses
- Part 3: Transmittance specifications and test methods
Annex A of this part of IS0 8980 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

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SIST EN ISO 8980-1:2000
IS0 8980=1:1996(E)
INTERNATIONAL STANDARD Q ISO
Ophthalmic optics - Uncut finished spectacle
lenses -
Part 1:
Specifications for sing le-v slon and multltoca I lenses
4 Classification
1 Scope
This part of IS0 8980 specifies requirements for the Finished lenses are classified as follows:
optical and geometrical properties for uncut f inished
a) single-vision finished lenses;
single-vision and multifocal spectacle lenses.
b) multifocal finished lenses;
2 Normative references
c) progressive power finished lenses.
The following standards contain provisions which,
. .
through reference in this text, constitute provtsjons
of this part of IS0 8980. At the time of publication, the 5 Requirements
editions indicated were valid. All standards are subject
The tolerances shall apply at a temperature of
to revision, and parties to agreements based on this
23 “C + 5 “C.
part of IS0 8980 are encouraged to investigate the -
possibility of applying the most recent editions of the
standards indicated below. Members of IEC and IS0
5.1 Optical requirements
maintain registers of currently valid International
Standards.
5.1 .l General
IS0 7944: 1984, Optics and optical instruments -
Reference wavelengths.
The optical tolerances shall apply at the reference
points of the lens at one of the reference wavelengths
I SO 8598:-J, Optics and optical instruments -
specified in IS0 7944.
Focime ters.
The as-worn position can result in the apparent power
I SO 13666:--J’, Ophthalmic optics - Spectacles
to the eye being different from that determined as a
lenses - Vocabulary.
result of the focimeter measurement.
If the manufacturer has applied corrections to com-
pensate for the as-worn position, then the tolerances
3 Definitions
shall apply to the corrected value and this corrected
For the purposes of this part of IS0 8980, the defi- value shall be stated by the manufacturer on the
nitions given in IS0 13666 apply. package or in an accompanying document (see 7.1).
I) To be published.
1

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SIST EN ISO 8980-1:2000
0 IS0
IS0 8980=1:1996(E)
meridian, A, and with the tolerances on the cylindrical
5.1.2 Tolerances on the power of single-vision
power, B (see table 1).
lenses and multifocal lenses for the distance
portion (back vertex power)
Tolerances on the direction of cylinder
5.1.2.2
axis
The optical power shall be determined using a
focimeter complying with ‘IS0 8598 or an equivalent
The tolerances on the direction of cylinder axis as
method.
specified in table2 shall be measured using the
method described in 6.1.
5.1.2.1 Tolerances on the power of lenses
These tolerances apply to multifocal lenses and to
I single-vision lenses with a predetermined orientation,
Spherical, aspherical and cylindrical power lenses shal
e.g. prism base setting.
comply with the tolerances on the power of each
Table 1 - Tolerances on the power of lenses
Values in dioptres (D)
Tolerance on Tolerance on the cylindrical power, B
Power of meridian
the power of
with highest
3 0,OO and > 0,75 and > 4,00 and
each
> 6,00
absolute power
meridian, A < 0,75
< 4,00 < 6,00
3 0,OO and <
3,00 + 0,12
+ - 0,09 + - 0,12 + - 0,18
+ - 0,25
_
> 3,00 and < 6,00
+ 0,12 + - 0,12 + - 0,12
+ - 0,18 + - 0,25
_
>6,00 and <
9,00 + 0,12 + - 0,12
+ - 0,18 + - 0,18
+ - 0,25
_
> 9,00 and < 12,00 + 0,18
+ - 0,12 + - 0,18
+ - 0,25 + 0,25
_
> 12,00 and < 20,OO + 0,25
+ - 0,18 + - 0,25
+ - 0,25 + 0,25
_
> 20,oo
+ 0,37 - + 0,25
+ - 0,25 + - 0,37
+ 0,37
-
Table 2 - Tolerances on the direction of cylinder axis
> 0,5 and > 0,75 and
< 0,50 > I,50
Cylindrical power, in dioptres
< 0,75
< I,50
Tolerance on the axis, in degrees
+7 +5 IL-3 33
2

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SIST EN ISO 8980-1:2000
IS0 8980=1:1996(E)
0 IS0
duction prism and the measured prismatic power
5.1.3 Tolerances on the addition power for
does not exceed the values given in table4.
multifocal lenses
The tolerances on the addition power as specified in Tolerances on the base setting of prism
5.1.5
table3 shall be measured using the method described
in 6.2. The tolerances on the base setting of any prism shall
be determined by verifying that the horizontal and
5.1.4 Tolerances
...