10
120
40
100
2
50 m 200 lm
200 m
200 lm
© 2024 Petzl Distribution - Lafouche
Different Beam Types
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.
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.
Brightness (lumens)
This measurement is taken between 30 and 120 seconds
after the headlamp is turned on. It indicates the maximum
light output when the lamp is first turned on using new
batteries (included).
Burn time (hours)
This is the length of time for which lighting remains
optimal, from the moment the lamp is turned on until it
drops to 10% of maximum light output. It then switches
to reserve lighting.
Lighting distance (meters)
This is the maximum distance between the lamp and
the location where only 0.25 lux of illumination remains.
The measurement is taken when the lamp is turned on,
using new batteries. Lighting distance depends directly
on brightness, but mainly on the shape of the beam.
Reserve lighting
(outside of the ANSI/PLATO FL 1 protocol)
In addition to these measures, Petzl offers reserve
lighting. Reserve lighting provides a minimum light level
to be able to move around. However, the lighting may
be insufficient for certain activities (such as precision
work or inspection).
Lighting Performance: How Is It Measured?
Lighting performance as def ined by the ANSI/PLATO FL 1 protocol
Petzl has chosen to comply with the ANSI (American National Standards Institute) FL 1 protocol to measure and demonstrate the lighting
performance of our headlamps. This voluntary move allows users to easily compare the lighting performance of different headlamp models
using standardized criteria.
Hours
or
Brightness
(lumens)
Burn time
(hours)
Focused beam
Focused beam allows focused lighting on a target
in order to see objects or people at a distance.
Mixed beam
Mixed beam consists of a wide beam and a focused
component, allowing both proximity lighting and
longer-range vision for moving around.
Wide beam
Wide beam designed for proximity lighting, to see up
close or around your feet. The wide angle provides
a very large and comfortable field of view.
Optimized lighting performance:
REACTIVE LIGHTING
®
Brightness varies according to the user’s need.
Intelligent lighting optimizes battery life, offering
longer burn time.
Prioritizing guaranteed brightness over time:
CONSTANT LIGHTING
Brightness stays constant as the batteries drain.
When the batteries are almost drained, the headlamp
switches automatically to reserve lighting, providing
reduced brightness with longer burn time.
Example of REACTIVE LIGHTING
Example of CONSTANT LIGHTING
Example of STANDARD LIGHTING
Prioritizing burn time: STANDARD LIGHTING
Brightness decreases gradually as the batteries
are drained. It is the most common technology.
A Question of Balance
Brightness and burn time are two inextricably
linked parameters of any headlamp, regardless
of its lighting technology. For a given quantity of
energy, increasing the brightness automatically
decreases burn time, and vice versa.
Different Lighting Technologies
Prioritizing burn time
over brightness
Lumens
Lumens
Actions
Hours
Lumens
Prioritizing brightness
over burn time
Brightness and Burn Time