prEN ISO 10322

SLOVENSKI STANDARD
01-maj-2025
Očesna optika - Napol zgotovljena stekla očal (ISO/DIS 10322:2025)
Ophthalmic optics - Semi-finished blanks (ISO/DIS 10322:2025)
Augenoptik - Einseitig fertige Brillenglasblanks (ISO/DIS 10322:2025)
Optique ophtalmique - Verres de lunettes semi-finis (ISO/DIS 10322:2025)
Ta slovenski standard je istoveten z: prEN ISO 10322
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 10322
ISO/TC 172/SC 7
Ophthalmic optics — Semi-finished
Secretariat: DIN
blanks
Voting begins on:
Optique ophtalmique — Verres de lunettes semi-finis
2025-03-27
Voting terminates on:
ICS: 11.040.70
2025-06-19
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 10322:2025(en)
DRAFT
ISO/DIS 10322:2025(en)
International
Standard
ISO/DIS 10322
ISO/TC 172/SC 7
Ophthalmic optics — Semi-
Secretariat: DIN
finished blanks
Voting begins on:
Optique ophtalmique — Verres de lunettes semi-finis
ICS: 11.040.70 Voting terminates on:
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 10322:2025(en)
ii
ISO/DIS 10322:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 1
5 Requirements . 1
5.1 General .1
5.2 Optical requirements for the finished surface .2
5.2.1 General .2
5.2.2 Surface power .2
5.2.3 Uniformity of the surface power of blanks with nominally spherical single-
vision and multifocal surfaces .3
5.2.4 Intended surface cylindrical power of blanks with single-vision or multifocal
surfaces .3
5.2.5 Surface addition power or variation power for blanks with multifocal or power-
variation surfaces .3
5.3 Geometrical tolerances .4
5.3.1 Classification of and tolerances on the size .4
5.3.2 Thickness .4
5.3.3 Segment tolerances for blanks with multifocal surfaces .4
5.4 Orientation requirement for polarizing blanks .5
5.5 Packaging .5
6 Test methods . 5
6.1 General .5
6.2 Determination of surface power .5
6.3 Verification method for addition power or variation power .6
6.3.1 General .6
6.3.2 Addition power for blanks with multifocal surfaces .6
6.3.3 Variation power for blanks with power-variation surfaces .8
6.4 Segment dimensions and position measurement method for multifocal blanks .8
6.5 Inspection method for material and surface quality .8
7 Marking and identification . 8
7.1 Marking .8
7.1.1 Blanks with spherical and aspherical surfaces . .8
7.1.2 Blanks with power-variation surfaces .8
7.2 Identification required for labelling on the package .9
7.2.1 All blanks .9
7.2.2 Multifocal blanks.9
7.2.3 Power-variation blanks .9
7.3 Information to be made available .9
8 Reference to ISO 10322 .10
Annex A (informative) Material and surface quality .11
Annex B (informative) Conversion of surface power and surface power tolerances from the
refractive index of the blank to that of an instrument's fixed reference .12
Bibliography . 14

iii
ISO/DIS 10322:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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 organizations,
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO [had/had not] received notice of
(a) patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 7,
Ophthalmic optics.
This fifth edition cancels and replaces the fourth editions (ISO 10322-1:2016 and ISO 10322-2:2016), which
have been combined and technically revised.
The main changes are as follows:
— The two original parts have been combined;
— Blanks have been classified by the type of finished surface, not by their intended use, since what were
termed single-vision blanks may be used to make multifocal or power-variation surfaces by using free
form technology;
— A cross reference has been made in 5.1 to the requirements in ISO 14889;
— The description of blank diameters has been amended with effective diameter now called actual diameter
and different tolerances;
— The text on addition power or variation power measurement has been made more similar to that
in ISO 8980-1 and -2, where appropriate.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
DRAFT International Standard ISO/DIS 10322:2025(en)
Ophthalmic optics — Semi-finished blanks
1 Scope
This document specifies requirements for the optical and geometrical properties of semi-finished blanks.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 photonics — Reference wavelengths
ISO 8598-1, Optics and optical instruments — Focimeters — Part 1: General purpose instruments
ISO 13666, Ophthalmic optics — Spectacle lenses — Vocabulary
ISO 14889, Ophthalmic optics — Spectacle lenses — Fundamental requirements for uncut finished lenses
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 13666 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Classification
Semi-finished blanks (shortened to blanks in the remainder of this document for easier reading) shall be
classified according to the finished surface as follows:
a) blanks with spherical finished surfaces;
b) blanks with aspherical, toroidal and atoroidal finished surfaces;
c) blanks with multifocal finished surfaces;
d) blanks with power-variation finished surfaces.
5 Requirements
5.1 General
The tolerances shall apply at a temperature of (23 ± 5) °C. It shall be possible for lenses made from these
blanks according to the manufacturer’s instructions to comply with the requirements of ISO 14889.

ISO/DIS 10322:2025(en)
5.2 Optical requirements for the finished surface
5.2.1 General
The optical tolerances shall apply to the manufacturer’s stated values at the reference points of the blank at
one of the two reference wavelengths specified in ISO 7944.
The reference point should be specified by the manufacturer. If no reference point is specified, the blank's
geometrical centre may be assumed to be the reference point.
The power ranges and tolerances in Tables 1, 2, 3 and 4 are expressed as surface power values, in dioptres,
in the refractive index of the material of the blank being measured.
5.2.2 Surface power
The tolerances on the surface power of blanks with spherical, aspherical, toroidal, atoroidal and multifocal
surfaces as specified in Table 1 shall apply at the reference point and shall be measured using the method
described in 6.2.
Table 1 — Tolerances on the surface power of blanks with spherical, aspherical, toroidal, atoroidal
and multifocal surfaces
All values in dioptres (D) in the refractive index of the material – see Annex B
a, b a, b
Nominal surface power Tolerance on surface power Tolerance on surface cylindrical
c
power
(Absolute value)
FF−
≥ 0,00 and ≤ 2,00 ±0,09 0,06
> 2,00 and ≤ 10,00 ±0,06 0,06
> 10,00 and ≤ 15,00 ±0,09 0,06
> 15,00 and ≤ 20,00 ±0,12 0,08
> 20,00 ±0,25 0,08
a
For blanks that are intended to have either no surface cylindrical power or a surface cylindrical power < 0,25 D, these
FF+
nominal surface powers and the tolerances apply to the mean sphere: , where F and F are the maximum and minimum
1 2
absolute values of the surface power.
b
For blanks that are intended to have an absolute surface cylindrical power ≥ 0,25 D, these nominal surface powers and the
tolerances apply to the principal meridian of numerically lower power.
c
Relative to zero, or to any intended surface cylindrical power of the blank's design, where this is < 0,25 D and where F and F
1 2
are the maximum and minimum values of the surface power.
See Table 3 for the tolerances to be applied to the intended cylindrical power when this is ≥ 0,25 D.
The tolerances on the surface power of blanks with power-variation surfaces as specified in Table 2 shall
apply at the primary reference point and shall be measured using the method described in 6.2.

ISO/DIS 10322:2025(en)
Table 2 — Tolerances on the surface power at the primary reference point of blanks with
power-variation surfaces
All values in dioptres (D) in the refractive index of the material – see Annex B
Tolerance on surface cylindri-
Tolerance on the surface mean sphere
a
cal power
Nominal surface power
FF+
FF−
≥ 0,00 and ≤ 10,00 ±0,09 0,09
> 10,00 and ≤ 15,00 ±0,12 0,12
NOTE F and F are the maximum and minimum values of the surface power.
1 2
a
Relative to zero, or to any intended surface cylindrical power of the blank's design.
5.2.3 Uniformity of the surface power of blanks with nominally spherical single-vision and
multifocal surfaces
Over a zone of 40 mm diameter centred around the reference point, the surface power shall comply with
the requirements of 5.2.2 and not deviate by more than 0,06 D from the surface power measured at the
reference point.
The uniformity shall be determined using a suitable instrument and the method described in 6.2.
5.2.4 Intended surface cylindrical power of blanks with single-vision or multifocal surfaces
The tolerances on the intended surface cylindrical power as specified in Table 3 shall apply at the reference
point and shall be measured using the method described in 6.2.
Table 3 — Tolerances on the intended surface cylindrical power
All values in dioptres (D) in the refractive index of the material – see Annex B
Intended cylindrical power Tolerance
(Absolute Value)
≥ 0,25 and ≤ 4,00 ±0,06
> 4,00 and ≤ 6,00 ±0,09
> 6,00 ±0,12
NOTE The tolerance on the power of the principal meridian with lower absolute power is given in Table 1.
5.2.5 Surface addition power or variation power for blanks with multifocal or power-variation
surfaces
The tolerances on the addition or variation power as specified in Table 4 shall apply at the reference points
and shall be measured using the method described in 6.3.
This subclause applies to power-variation blanks only if they have both a primary and a secondary
reference point.
Table 4 — Tolerances on the surface addition power or variation power
All values in dioptres (D) in the refractive index of the material – see Annex B
Surface addition power Tolerance
≤ 4,00 ±0,12
> 4,00 ±0,18
ISO/DIS 10322:2025(en)
5.3 Geometrical tolerances
5.3.1 Classification of and tolerances on the size
The sizes are classified as follows:
a) Nominal size, d The label or packaging value;
n
b) Actual size, d The largest physical diameter, in millimetres, of the blank;
a
c) Useable size, d The diameter, in millimetres, of the blank that the manufacturer states is usable.
u
For blanks that are intentionally not round, or that have different horizontal and vertical dimensions, the
manufacturer shall state the equivalent sizes for the horizontal and vertical dimensions, separated by '×'.
This typically applies to elliptical shaped blanks. It also applies to polarizing blanks with notches indicating
the intended horizontal orientation of the lens, where the notching may result
...