AS1067-2003 Lens Classes

The full AS1067 specification cannot be published here but a table of Lens Classes is below

The AS1067 standard is highly technical with large numbers of equations and test methods. Understanding it would take an expert in optics. It divides sunglasses into categories and specifies the labelling required for each category.

There are two tables in the standard, the first setting out the classes of sunglasses with the light and UV characteristics required and the second which sets out the sunglass usage and the labelling (additional Information) required.

The table below is a compilation of the two tables with the classes, visible light luminous transmittance allowed plus the usage and labelling requirements to enable comparison with visor requirements.

 

Lens
Category
Visible Light
% Luminance
Transmittance


Description

Additional
Info Required

Required
Symbol
 

0

80.0 to 100
Fashion Spectacles - not sunglasses
Very low glare reduction
Some UV protection

None

None
 

1

43.0 to 80.0
Fashion Spectacles - not sunglasses
Limited glare reduction
Some UV protection

Not suitable for
driving at night

None
 

2

18.0 to 43.0
Sunglasses
Medium Glare Reduction
Good UV protection

None

None
 

3

8.0 to 18.0
Sunglasses
High Glare Reduction
Good UV protection

None

None
 

4

3.0 to 8.0
Sunglasses - Special Purpose
Very High glare reduction
Good UV protection

Must not be used
when driving

Figure 1
min 5mm
 
AS1609 Visor Classes (not updated since 1981)
 
Clear
85.0 to 100
Glare reduction and UV protection ?
 
 
 
Tinted
50.0 to 85.0
Glare reduction and UV protection ?
Not for use at night
 
 
VESC-8 Visor Classes (not updated since 1980)
 
Clear
85.0 to 100
 
 
VESC-8 or V-8
 
Tinted
20.0 to 85.0
 
Day use only
VESC-8 or V-8
 
FMVSS 218 (US DOT)

There has been no specification for visors until a proposal to use VESC-8 in 2011

 

Note the disparity in light transmittance & labelling requirements between visors and sunglass classes 2 & 3.

Car rear windscreen tinting can be down to 35% visible light transmittance.