ISO 12312-1:2022

Overview

ISO 12312-1:2022 - Eye and face protection - Sunglasses and related eyewear - Part 1: Sunglasses for general use - is the international standard that defines safety, optical and construction requirements for afocal (plano power) sunglasses and clip‑ons intended for protection against solar radiation, including road use and driving. It specifies test methods, labeling and information requirements and covers both conventional sunglass filters and advanced electro‑optical and photochromic options (with some features optional).

The standard does not apply to eyewear for artificial light sources, medically prescribed solar‑attenuating spectacles, sport‑specific goggles, devices for direct solar observation (ISO 12312‑2), or occupational eye protection (e.g., ISO 16321 series).

Key topics and technical requirements

ISO 12312‑1:2022 addresses technical areas critical to consumer safety and product performance:

• Construction and materials: safe frame/edge finishes, smooth contact areas and recommendations for screw sizes.
• Filter material and surface quality: visual defect limits and exclusion zones to avoid impaired vision.
• Transmittance: test methods, filter categories, uniformity, wide‑angle scatter and road/ driving‑specific requirements.
• Optical properties: refractive power, spatial deviation, prism imbalance and related optical tolerances.
• Robustness and mechanical performance: minimum filter robustness, frame deformation and optional impact‑resistance strength levels and endurance tests.
• Resistance tests: resistance to solar radiation, ignition and optional abrasion resistance.
• Protective coverage: area coverage and temporal protective requirements for transient solar exposure.
• Information and labelling: mandatory information to accompany each pair and additional user guidance.
• Annexes: Annex A (use of sunglass filters), Annex B (electro‑optical sunglare filters) and Annex C (requirements for unmounted replacement filters).

Notable updates in the 2022 edition include added specifications for electro‑optical filters, replacement of “local variations in refractive power” with spatial deviation, and optional photochromic activation temperature reporting.

The standard references test methods from the ISO 18526 series and other ophthalmic and colorimetry documents.

Practical applications and who uses it

ISO 12312‑1:2022 is essential for:

• Sunglass and lens manufacturers and designers ensuring compliance and consistent quality.
• Test laboratories performing optical, mechanical and environmental testing.
• Importers, retailers and product compliance teams verifying labeling and safety claims.
• Regulators and procurement officers specifying minimum requirements for consumer safety.
• Brand and product development teams integrating electro‑optical or photochromic technologies.

Following ISO 12312‑1 helps reduce optical hazards, ensures suitability for road use and improves consumer confidence in sunglasses marketed for solar protection.

Related standards

• ISO 12312‑2 (direct solar observation)
• ISO 18526 (test methods for eye and face protection)
• ISO 4007 (vocabulary for eye and face protection)
• ISO 16321 (occupational eye protection series)

Keywords: ISO 12312-1, sunglasses standard, eye and face protection, sunglass filters, transmittance, electro‑optical filters, photochromic lenses, sunglass testing.