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BS ISO 14997:2017

Current
Current

The latest, up-to-date edition.

Optics and photonics. Test methods for surface imperfections of optical elements
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

19-09-2017

This document specifies the physical principles and practical means for the implementation of methods for evaluating surface imperfections.

For imperfections specified using the visibility method, two inspection methods are described. The first is visual evaluation of the surface without any comparison standard (IVV). The second is a visibility assessment of a surface imperfection when compared to an artefact of known brightness (ISV).

For imperfections specified using the dimensional method, three methods are described. The first is visual evaluation of the surface without any comparison standard (IVD). The second is a dimensional assessment of a surface imperfection when compared to an artefact of known size (ISD). The third is the dimensional measurement of a surface imperfection using magnification and either a comparison artefact of known size or a reticle or ruler (IMD).

Instruments exist that allow objective measurement of brightness (digital scatterometry) or size (digital microscopy). While these instruments can be used for evaluation of surface imperfections, they are beyond the scope of this document.

This document applies to optical surfaces of components or assemblies such as doublets or triplets.

This document can be applied to optical plastic components; however, attention is drawn to the fact that impact damage to plastic materials often looks very different from that on harder materials as it does not always result in the removal of material but instead can displace material, causing ripples in the surface. Consequently, visual comparisons of scratch and dig damage to plastic with those on glass or crystalline materials can give very different results.

Committee
CPW/172
DevelopmentNote
Supersedes 99/703560 DC (08/2003) Supersedes 16/30316782 DC. (10/2017)
DocumentType
Standard
Pages
24
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 14997:2017 Identical

ISO/TR 21477:2017 Optics and photonics Preparation of drawings for optical elements and systems Surface imperfection specification and measurement systems
ISO 9211-1:2010 Optics and photonics Optical coatings Part 1: Definitions
ISO 10110-1:2006 Optics and photonics Preparation of drawings for optical elements and systems Part 1: General
ISO 11145:2016 Optics and photonics Lasers and laser-related equipment Vocabulary and symbols
ISO 10110-7:2017 Optics and photonics — Preparation of drawings for optical elements and systems — Part 7: Surface imperfections

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