SAFEGUARD | Hardlines, Softlines NO. 052/16
In October 2015, a draft GB standard for sunglasses and sunglare filters (part 1: requirements; part 2: test methods) was proposed and the approved standard is expected to be published in 2016.
The draft standard adopts ISO 12312-1: 2013 as a reference standard with modifications:
The main differences between the draft GB standard and the ISO standard are
1. Cancelled ISO 12312-1: 2013, clause 6.2 Local variations in refractive power
2. Modified ISO 12312-1: 2013, clause 7 (impact resistance of filter); requirements of Polarizing filters
Newly added requirements:
- Integrity (adhesion) of external coating
- Requirements of specification of spectral transmittance
And following are proposed mandatory requirements:
transmittance and filter categories
uniformity of luminous transmittance
requirements for road use and driving
wide angle scattering
additional transmittance requirements for photochromic filters and polarizing filters
claimed transmittance properties
- Refractive power
spherical and astigmatic power
- Endurance of sunglasses
- Frame deformation and retention of filters
- Resistance to solar radiation
- Resistance to Ignition
- External coating properties
Resistance to perspiration
Adhesion of external coating
- Coverage area of sunglasses
- Information and Labelling
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