EN ISO 11381:1996

SLOVENSKI STANDARD
01-januar-2000
2SWLNDLQRSWLþQLLQVWUXPHQWL2þHVQDRSWLND1DYRMLYLMDNRY,62
Optics and optical instruments - Ophthalmic optics - Screw threads (ISO 11381:1994)
Optik und optische Instrumente - Augenoptik - Schraubgewinde (ISO 11381:1994)
Optique et instruments d'optique - Optique ophtalmique - Filetages (ISO 11381:1994)
Ta slovenski standard je istoveten z: EN ISO 11381:1996
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
ISO
STANDARD
First edition
1994-12-15
Optics and Optical instruments -
Ophthalmic optics - Screw threads
Optique et instrumen ts d ’optique - Optique ophtalmique - Filetages
Reference number
ISO 11381:1994(E)
ISO 11381:1994(E)
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. Esch member body interested in a subject for
which a technical committee has been established has the right to be re-
presented 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.
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 ISO 11381 was prepared by Technical Committee
lSO/TC 172, Optics and optica/ instruments, Subcommittee SC 8,
Oph thalmic op tics.
Annex A of this International Standard is for information only.
0 ISO 1994
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronrc or mechanrcal, rncluding photocopyrng and
microfilm, without permrssion in writing from the publisher.
International Organization for Standardiza tion
Case Postale 56 l CH-121 1 Geneve 20 l Switzerland
Printed in Switzerland
INTERNATIONAL STANDARD 0 ISO ISO 11381:1994(E)
Optics and Optical instruments - Ophthalmic
optics - Screw threads
1 Scope 3 Screw threads
The screw threads shall be either
This International Standard specifies requirements for
ISO metric screw threads for use with spectacle
- ISO metric threads of size SO,8 x 0,2, complying
frames. Provision is made for screw threads of the
with the requirements of lSO/R 1501, or
following nominal sizes: SO,8 x 02; M1,O x 0,25;
M1,2 x 0,25; Ml,4 x 0,3; M1,6 x 0,35 and
- ISO metric screw threads of sizes Ml ,O x 0,25;
M2,O x 0,4 and for related taps and gauges.
Ml,2 x 0,25; M1,4 x 0,3; M1,6 x 0,35
or
M2,O x 0,4, complying with the requirements of
ISO 965-3.
The class of fit shall be as given in table 1.
2 Normative references
Table 1
- Class of fit of screw threads
Th
...