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 )
Narrow beam
Narrow 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 . This 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