Page 152 - Petzl-catalog-pro-2018

Making an informed choice
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Brightness or burn time: a question of balance

Brightness and burn time are two inextricably Brightness Burn time
linked parameters of any headlamp, regardless (lumens) (hours)
of its lighting technology. For a given quantity of
energy, increasing the brightness automatically
decreases burn time, and vice versa.

Prioritizing brightness or Prioritizing burn time
over burn time over brightness

The different lighting technologies used in Petzl headlamps make it possible to meet your needs, depending on what you want:

• Prioritizing the burn time: Lumens Example of STANDARD LIGHTING
STANDARD LIGHTING 100
Brightness decreases gradually as the batteries
are drained. It is the most common technology.

120 Hours

• Prioritizing guaranteed brightness Lumens Example of CONSTANT LIGHTING
over time: CONSTANT LIGHTING
Brightness stays constant as the batteries 180
drain. When the batteries are almost drained,
the headlamp switches automatically to reserve 120
mode, with weaker output that prolongs lighting
time.

2 40 Hours

Brightness: the shape of the beam directly affects lighting distance

Lighting distance depends directly on brightness, but mainly
on the shape of the beam. In fact, given the same brightness,
lighting distance will vary depending on the shape of the
beam.
100 lumens 40 m
Petzl indicates the different lighting modes available for each
headlamp. These modes correspond to specific conditions of
use: close-range work, moving around, seeing at a distance.
100 lumens 100 m

Tetragon Distributors Inc.
sales@tetragon.ca www.tetragon.ca
905-828-9803