97
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
1064 nm
Application type
Marking
Emission type
Q-Switched
Observation type
Direct radiation
Pulse energy
Vlase
TM
IR 1109-TFS2: 480
J @ 10 kHz
Vlase
TM
IR 1209-TFS2: 550
J @ 20 kHz
Pulse duration
Vlase
TM
IR 1109-TFS2: 15 ns
Vlase
TM
IR 1209-TFS2: 8 ns
Beam Diameter at 9X Beam Expander Output (1/e2)
Vlase
TM
IR 1109-TFS2: 6.0 mm
Vlase
TM
IR 1209-TFS2: 5.0 mm
Beam divergence on the lens
Vlase
TM
IR 1109-TFS2: 0.6 mrad
Vlase
TM
IR 1209-TFS2: 0.8 mrad
Focal of the F-Theta lens
160 mm
Real divergence after the lens
Vlase
TM
IR 1109-TFS2: 37,5 mrad
Vlase
TM
IR 1209-TFS2: 31,2 mrad
Exposition time
10 s
Summary of Contents for VLASE IR 1PWX-TLS2
Page 1: ...USER S MANUAL VLASETM IR ...
Page 34: ...VLASETM IR 34 2 2 6 CONNECTION EXAMPLES Figure 27 Connection examples ...
Page 85: ...85 EXTERNAL LABEL PLACING Figure 67 Positioning of external labels rack ...
Page 86: ...86 Figure 68 Positioning of external labels resonator ...
Page 90: ...90 BLOCK DIAGRAM VLASETM SAFETY LOGIC DETAILS FOR AUTOMATIC PRODUCTION LINE ...
Page 108: ...108 APPENDIX G MECHANICAL DRAWINGS ...
Page 109: ...109 NOTE Please refer to Datalogic website for detailed drawings ...
Page 112: ......