DIN EN ISO 8980-3 E 2021-03 PDF

Full title and description

STB DIN EN ISO 8980-3 E 2021-03 — Ophthalmic optics — Uncut finished spectacle lenses — Part 3: Transmittance specifications and test methods. This designation appears to reference the March 2021 European draft/adoption stage (prEN/DIN prEN) of the international work on ISO 8980-3; the final international standard is published as ISO 8980-3:2022 with the title shown above.

Abstract

This part of ISO 8980 specifies requirements and test methods for the transmittance properties of uncut finished spectacle lenses, including criteria for attenuation of solar radiation and measurement procedures for determining optical transmittance. It covers typical optical transmittance parameters for spectacle lenses and identifies products or uses to which the document does not apply (for example lenses prescribed for specific medical reasons or for direct solar observation).

General information

• Status: Draft European/ national adoption stage (designation as prEN/DIN prEN in March 2021) — subsequently finalized at international level as ISO 8980-3:2022 (published).
• Publication date: Draft / national designation shown as March 2021; international publication (ISO 8980-3:2022) June 2022.
• Publisher: User-supplied designation includes STB and DIN/EN; the authoritative international publisher is ISO (ISO 8980-3:2022). National/adoption copies are published by national bodies (for example DIN/CEN members) when adopted.
• ICS / categories: 11.040.70 (Ophthalmic optics).
• Edition / version: The draft designation shows prEN/pr stage (2021-03); the current international edition is Edition 4, ISO 8980-3:2022.
• Number of pages: International version: 34 pages (ISO 8980-3:2022). Draft/national documents may have different pagination.

Scope

The standard applies to uncut, unmounted finished spectacle lenses and specifies transmittance requirements and measurement methods for determining visible and solar transmittance characteristics. It includes classification and limits relevant to attenuation of solar radiation and defines which lens types and product uses are excluded (for example, lenses with special medical prescriptions, products covered by PPE transmittance standards, and lenses for direct solar observation). The document also indicates applicability to mounted lenses by reference to related standards.

Key topics and requirements

• Definitions and classification of transmittance categories for finished spectacle lenses (visible and solar ranges).
• Required test methods and measurement procedures for spectral transmittance (instrumentation and measurement conditions).
• Limits and tolerances for transmittance values, including solar attenuation criteria.
• Reference to related parts (optical/geometrical requirements) and related standards for mounted lenses.
• Exclusions and special cases (medical prescription lenses, PPE, solar-eclipse viewing lenses).

Typical use and users

Primary users are spectacle-lens manufacturers, optical laboratories and test houses, quality and compliance teams in eyewear companies, standards bodies and conformity assessment organizations, and regulatory or procurement specialists specifying optical and solar transmittance performance. Eye-care professionals and product designers may also consult the standard when specifying lens performance.

Related standards

Commonly referenced companion documents include ISO 8980-1 and ISO 8980-2 (other parts of the series covering optical and geometrical requirements), ISO 21987 (requirements for mounted lenses) and other related test-method standards cited within ISO 8980-3. Users should consult the sequence of ISO 8980 parts for complete requirements across spectacle-lens properties.

Keywords

ophthalmic optics, spectacle lenses, uncut finished lenses, transmittance, solar attenuation, spectral transmittance, test methods, ISO 8980-3, measurement procedures, optical requirements.

FAQ

Q: What is this standard?

A: It is the part of the ISO 8980 series that specifies transmittance requirements and test methods for uncut finished spectacle lenses (designation shown in user input as STB DIN EN ISO 8980-3 E 2021-03 referencing a national/European draft stage). The finalized international publication is ISO 8980-3:2022.

Q: What does it cover?

A: The document covers spectral transmittance specifications, classification of lenses by transmittance/solar attenuation, and standardized measurement procedures and conditions for determining those transmittance values. It also lists exclusions such as certain medical or PPE lenses.

Q: Who typically uses it?

A: Spectacle-lens manufacturers, optical test laboratories, quality/compliance teams, standards bodies, and regulators or specifiers in eyewear procurement and safety. Eye-care professionals and designers consult it for specifying performance.

Q: Is it current or superseded?

A: The specific draft/national designation dated March 2021 (prEN / DIN prEN stage) was a draft step; the authoritative international standard was published as ISO 8980-3:2022 (June 2022). Users should apply the published ISO 8980-3:2022 text (and any national adoptions) for current normative requirements and check for any later amendments.

Q: Is it part of a series?

A: Yes — ISO 8980 is a multipart series on ophthalmic optics / finished spectacle lenses. Part 1 and Part 2 cover optical and geometrical requirements; Part 3 addresses transmittance. Other related documents (for mounted lenses, test methods and amendments) are referenced within the series.

Q: What are the key keywords?

A: ophthalmic optics; spectacle lenses; transmittance; solar attenuation; spectral measurement; uncut finished lenses; test methods; ISO 8980-3.