Determination And O.d. Of Protection Goggles - Datalogic VLASE IR 1PWX-TLS2 User Manual

N.O.H.D. DETERMINATION AND O.D. OF PROTECTION GOGGLES
In order to determine the characteristics of the protection goggles, it is essential to determine the
characteristics of the radiation, knowing its optical path, the dimensions of the beam and its divergence.
In particular, it is very important to know the real divergence of the beam in output from the objective (F-
Theta).
With all this optical data available, it is possible to calculate the Nominal Ocular Hazard Distance (N.O.H.D.)
and the optical density (O.D.) required by the laser radiation protection filters (goggles).
Calculations have been done following the CEI EN 60825-1 (2014) Normative regarding nominal
distance and optical risk in the worst condition and in case of accidental exposure of 10 seconds for
direct radiation and 100 seconds for diffused radiation.
Wavelength
Application type
Emission type
Observation type
Pulse energy
Pulse duration
Beam Diameter at 9X Beam Expander Output (1/e2)
Beam divergence on the lens
Focal of the F-Theta lens
Real divergence after the lens
Exposition time
1064 nm
Marking
Q-Switched
Direct radiation
IR 1109-TFS2: 480 J @ 10 kHz
TM
Vlase
IR 1209-TFS2: 550 J @ 20 kHz
TM
Vlase
TM
Vlase IR 1109-TFS2: 15 ns
TM
Vlase IR 1209-TFS2: 8 ns
TM
Vlase IR 1109-TFS2: 6.0 mm
TM
Vlase IR 1209-TFS2: 5.0 mm
TM
Vlase IR 1109-TFS2: 0.6 mrad
TM
Vlase IR 1209-TFS2: 0.8 mrad
160 mm
TM
Vlase IR 1109-TFS2: 37,5 mrad
TM
Vlase IR 1209-TFS2: 31,2 mrad
10 s
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