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ISO 12312-2:2015(en)
Eye and face protection ? Sunglasses and related eyewear ? Part 2: Filters for direct observation of the sun
Table of contents
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements and associated test methods
4.1 Transmittance
4.2 Material and surface quality
4.3 Mounting
5 Labelling
Annex A Use of filters for direct observation of the sun
Annex B Solar eclipse eye safety: User?s guide[23]
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The committee responsible for this document is ISO/TC 94, Personal safety ? Protective clothing and equipment, Subcommittee SC 6, Eye and face protection.
ISO 12312 consists of the following parts, under the general title Eye and face protection ? Sunglasses and related eyewear:
  • ? Part 1: Sunglasses for general use
  • ? Part 2: Filters for direct observation of the sun

1   Scope

This part of ISO 12312 applies to all afocal (plano power) products intended for direct observation of the sun, such as solar eclipse viewing.
Information on the use of filters for direct observation of the sun is given in Annex A and Annex B.
This part of ISO 12312 does not apply to the following:
  • a) afocal (plano power) sunglasses and clip-ons for general use intended for protection against solar radiation;
  • b) eyewear for protection against radiation from artificial light sources, such as those used in solaria;
  • c) eye protectors specifically intended for sports (e.g. ski goggles or other types);
  • d) sunglasses that have been medically prescribed for attenuating solar radiation;
  • e) prescription sunglass lenses.

2   Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
  • ISO 12311:2013, Personal protective equipment ? Test methods for sunglasses and related eyewear
  • ISO 4007, Personal protective equipment ? Eye and face protection ? Vocabulary

3   Terms and definitions

For the purposes of this document, the terms and the definitions given in ISO 4007 apply.
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[16]J.M. Pasachoff Field Guide to the Stars and Planets. Houghton Mifflin, Boston, Massachusetts, Fourth Edition, 2000, 578 p.
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[18]J.M. Pasachoff, M. Covington Cambridge Guide to Eclipse Photography. Cambridge University Press, Cambridge, New York, 1993, 143 p.
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[21]M.D. Reynolds, R.A. Sweetsir Observe Eclipses, Astronomical League, Washington, DC, 1995, 92 pp
[22]P.C. Sherrod A Complete Manual of Amateur Astronomy. Prentice-Hall, 1981, 319 p.
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