Header
About this publication
Preface
1 Scope
2 Normative references
3 Definitions
4 Construction and materials
4.1 Construction
4.2 Filter material and surface quality
4.3 Physiological compatibility
5 Transmittance
5.1 Test methods
5.2 Transmittance and filter categories
5.3 General transmittance requirements
5.3.1 Uniformity of luminous transmittance
5.3.2 Requirements for road use and driving
5.3.2.1 General
5.3.2.2 Spectral transmittance
5.3.2.3 Detection of signal lights
5.3.2.4 Driving in twilight or at night
5.3.3 Wide angle scattering
5.3.4 Additional transmittance requirements for specific filter types
5.3.4.1 Photochromic filters
5.3.4.2 Polarizing filters
5.3.4.3 Gradient filters
5.3.4.3.1 General
5.3.4.3.2 Determination of the filter category
5.3.5 Claimed transmittance properties
5.3.5.1 Blue-light absorption/transmittance
5.3.5.1.1 Blue-light absorption
5.3.5.1.2 Blue-light transmittance
5.3.5.2 UV absorption/transmittance
5.3.5.2.1 General
5.3.5.2.2 Solar UV absorption
5.3.5.2.3 Solar UV transmittance
5.3.5.2.4 Solar UV-A absorption
5.3.5.2.5 Solar UV-A transmittance
5.3.5.2.6 Solar UV-B absorption
5.3.5.2.7 Solar UV-B transmittance
5.3.5.2.8 UV400 (or other nominated wavelength)
5.3.5.3 Antireflective coated sunglasses
5.3.5.4 Enhanced infrared absorption
6 Refractive power
6.1 Spherical and astigmatic power
6.2 Local variations in refractive power
6.3 Prism imbalance (relative prism error)
7 Robustness
7.1 General
7.2 Frame deformation and retention of filters
7.3 Robustness and filter retention
7.4 Increased endurance of sunglasses (optional specification)
7.5 Resistance to perspiration (optional specification)
7.6 Impact resistance of the filter (optional specification)
8 Resistance to solar radiation
9 Resistance to ignition
10 Resistance to abrasion (optional specification)
11 Protective requirements
11.1 Coverage area
11.2 Temporal protective requirements
12 Information and labelling
12.1 Information to be supplied with each pair of sunglasses
12.2 Additional information
12.3 Methods of marking and labelling
12.3.1 Form of labelling
12.3.2 Durability
12.3.3 Legibility
13 Selection of test samples
13.1 General
13.2 Preparation and conditioning of test samples
14 Testing
14.1 Testing schedule for complete sunglasses
14.2 Testing of unmounted filters
14.3 Testing schedule of complete clip-ons
Appendix A
A1 Daytime
A2 Reduced light
A3 Photochromic sunglass filters
A4 Blue-light hazard
A5 Infrared risk
A6 UV risk
A7 Road use and driving
Appendix B
B1 Scope
B2 Spherical and astigmatic power
B3 Prismatic tolerance
B4 Prism imbalance (relative prism error)
B5 Replacement filters
B5.1 General
B5.2 Determination of the filter luminous transmittance and category
B5.3 Uniformity of the luminous transmittance
B6 Polarizing filters
B7 Robustness and filter retention
B8 Information and labelling
Appendix C
C1 General
C2 Discussion of test methods
C3 Discussion of requirements
C4 Bibliographic references for Appendices A and C
Bibliography
Amendment control sheet
AS 1670.1:2018
Amendment No. 1 (2021)
Revised text amendment
