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BS EN ISO 9342-1:2005

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Optics and optical instruments. Test lenses for calibration of focimeters Test lenses for focimeters used for measuring spectacle lenses

Available format(s)

Hardcopy , PDF

Superseded date

19-07-2023

Language(s)

English

Published date

13-07-2005

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Design requirements and recommendations for test lenses
5 Tolerances
Annex A (informative) Manufacture of test lenses
                      for focimeters

Defines requirements for test lenses for the calibration of focimeters that are used for the measurement of spectacle form lenses.

This part of ISO9342 specifies requirements for test lenses for the calibration of focimeters that are used for the measurement of spectacle form lenses.

NOTE It is accepted that other test lenses can also be used with powers within the given range, manufactured to the same standard of accuracy and form, but different back vertex powers. However, only lenses with integer nominal powers, as described in AnnexA, can be used for the calibration of digitally-rounding focimeters.

Committee
CH/172/3
DevelopmentNote
Supersedes 03/119629 DC. (07/2005) Together with BS EN ISO 9342-2, it supersedes BS EN ISO 9342. (04/2010)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

ISO 7944:1998 Optics and optical instruments — Reference wavelengths

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£134.00
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