EN ISO 8598:1998
(Main)Optics and optical instruments - Focimeters (ISO 8598:1996)
Optics and optical instruments - Focimeters (ISO 8598:1996)
Specification of minimum requirements in order to guarantee a sufficient quality of use.
Optik und optische Instrumente - Scheitelbrechwert-Meßgeräte (ISO 8598:1996)
Diese Internationale Norm legt Anforderungen an kontinuierlich anzeigende Scheitelbrechwert-Meßgeräte und digital rundende Scheitelbrechwert- Meßgeräte fest, die zur Messung der Scheitelbrechwerte und prismatischen Wirkungen von sphärischen und astigmatischen Brillengläsern, einschließlich Brillengläser montiert in Brillenfassungen und Kontaktlinsen, sowie der Orientierung und Markierung von Brillengläsern dienen.
Optique et instruments d'optique - Frontofocomètres (ISO 8598:1996)
La CEI 61076-2-106:2011 décrit les connecteurs circulaires qui possèdent un degré de protection IP40 ou IP65/67, généralement utilisés dans le domaine des mesures et commandes des processus industriels. Ces connecteurs se composent d'embases et de fiches, pouvant être recâblées ou non, à vis M16 x 0,75. Les connecteurs mâles possèdent des contacts ronds de Ø 1,5 mm ou Ø 1,0 mm.
Optika in optični instrumenti - Fokometri (ISO 8598:1996)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 8598:2000
01-januar-2000
2SWLNDLQRSWLþQLLQVWUXPHQWL)RNRPHWUL ,62
Optics and optical instruments - Focimeters (ISO 8598:1996)
Optik und optische Instrumente - Scheitelbrechwert-Meßgeräte (ISO 8598:1996)
Optique et instruments d'optique - Frontofocometres (ISO 8598:1996)
Ta slovenski standard je istoveten z: EN ISO 8598:1998
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
SIST EN ISO 8598:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 8598:2000
INTERNATIONAL Is0
STANDARD 8598
First edition
1996-08-o 1
Optics and optical instruments -
Focimeters
Op tique et instruments d ‘op tique - Fron tofocom8 tres
Reference number
IS0 8598: 1996(E)
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SIST EN ISO 8598:2000
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 rep-
resented 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 8598 was prepared by Technical Committee
lSO/TC 172, Optics and optical instruments, Subcommittee SC 7, Oph-
thalmic, endoscopic, metrological instruments and test methods.
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 Orga nization for Standardization
Case postale 56 l CH-121 1 Geneve 20 l Switzerland
Printed in Switzerland
ii
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SIST EN ISO 8598:2000
IS0 8598: 1996(E)
INTERNATIONAL STANDARD 0 IS0
Focimeters
Optics and optical instruments -
3 Definitions
1 Scope
For the purposes of this International Standard, the
This International Standard specifies requirements for
focimeters and digitally following definitions apply.
continuously indicating
rounding focimeters with which the vertex powers
and prismatic powers of spherical and astigmatic
3.1 focimeter: Instrument that is used to measure
lenses, including lenses mounted in frames and
vertex powers and prismatic effects of spectacle and
contact lenses, can be measured and with which
contact lenses, to orientate and mark uncut lenses,
lenses can be orientated and marked.
and to verify the correct mounting of lenses in spec-
tacles frames.
NOTE 1 For the measurement of vertex powers of contact
lenses, see IS0 9337:- 1), Optics and optical instruments~
3.2 continuously indicating focimeter: Focimeter
- Contact lenses - Determination of back vertex power.
with a continuous scale.
3.3 digitally rounding focimeter: Focimeter which
2 Normative references
displays measured values rounded to the nearest
incremental value.
The following standards contain provisions which,
through reference in this text, constitute provisions of
3.4 lens support: Aperture on the instrument
this International Standard. At the time of publication,
against which the lens or the contact lens is placed
the editions indicated were valid. All standards are
for measurement.
subject to revision, and parties to agreements based
NOTE 2 The focimeter measures the vertex power rela-
on this International Standard are encouraged to
tive to the surface placed against the lens support.
investigate the possibility of applying the most recent
editions of the standards indicated below. Members
of IEC and IS0 maintain registers of currently valid
3.5 adjusting rail: Movable rail or bar used as the
International Standards.
reference axis for spectacles during measurement,
which is aligned perpendicularly to the optical axis of
IS0 7944:-z), Optics and optical ins
...
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