PIP Consumables Catalogue JULY 2024 ED1 DIGITAL V3 - Flipbook - Page 122
PRO CHOICE SAFETY GEAR
PROTECTIVE
EYEWEAR
When it comes to safety glasses, the term 8visible light transmission9 or 8VLT9 relates
only to the visible light that we can see in the 400-700 nanometre range
(refer to the UV/Visible light scale).
When it comes to safety glasses, the term 8visible light
transmission9 or 8VLT9 relates only to the visible light that we
can see in the 400-700 nanometre range (refer to the UV/
Visible light scale).
The higher the VLT percentage, the lighter the lens tint will be
(for example, lenses with a 9% VLT will be darker than lenses
with a 15% VLT).
So what is a VLT% and what does it mean when it comes to
choosing safety glasses?
If you live in a bright and sunny environment, you will want a
lens with a lower VLT% but if you live in an area which is often
cloudy, then it9s worth considering a lens with a higher VLT%.
Simply put, the VLT% is the degree of the lens tint 3 i.e. the
amount (or percentage) of visible light that passes through
the lens.
Fortunately, there is an established convention for categorising
lenses according to their VLT% which is shown in the
table below.
LENS SELECTION GUIDE
LENS
CATEGORY
VLT%
RANGE
DESCRIPTION
0
100-80%
VERY LOW REDUCTION OF SUN GLARE
1
80-43%
LIMITED SUN GLARE REDUCTION
2
43-18%
MEDIUM REDUCTION OF SUN GLARE
3
18-8%
HIGH REDUCTION OF SUN GLARE
4
8-3%
VERY HIGH REDUCTION OF SUN GLARE
USE
DAY DRIVING
NIGHT DRIVING
*This table is a general guide only 3 refer to manufacturer test report for the specioc lens category and VLT%
122
AMOUNT OF SUNLIGHT
PROCHOICESAFETYGEAR.COM
CLEAR
AMBER
LIGHT BROWN
BLUE MIRROR
SMOKE
POLARISED
PROTECTIVE EYEWEAR
LENS SUNLIGHT CHART
