LASER SAFETY
102
VLASE™ IR
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.
Objective
Scanning Head
Beam-Exp
Source
It is very important to know the real divergence of the laser beam at output of F-Theta
scan lens.
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 protec-
tion filters (goggles).
Below 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 acci-
dental exposure of 10 seconds for direct radiation and 100 seconds for diffused radia-
tion.
RIF
1064 nm
Q-Switched
Direct radiation
Vlase™ IR 1109-TFS2: 480 μJ @ 10 kHz
Vlase™ IR 1209-TFS2: 550 μJ @ 20 kHz
Vlase™ IR 1109-TFS2: 15 ns
Vlase™ IR 1209-TFS2: 8 ns
DL
Vlase™ IR 1109-TFS2: 6.0 mm
Vlase™ IR 1209-TFS2: 5.0 mm
2
Vlase™ IR 1109-TFS2: 0.6 mrad
Vlase™ IR 1209-TFS2: 0.8 mrad
F
160 mm
3
Vlase™ IR 1109-TFS2: 37,5 mrad
Vlase™ IR 1209-TFS2: 31,2 mrad
10 s
Wavelength
Laser 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
Exposure time
Summary of Contents for VLASE IR 1109-1 42 Series
Page 1: ...VLASE IR USER MANUAL InfraRed Laser Marker ...
Page 72: ...USE AND OPERATION 64 VLASE IR ...
Page 101: ...PERFORMANCE LEVEL PL USER MANUAL 93 BLOCK DIAGRAM ...
Page 121: ...THERMALIZATION AND SUPPRESSION OF GIANT PULSES USER MANUAL 113 ...
Page 133: ...USER MANUAL 125 APPENDIX G MECHANICAL DRAWINGS ...