MediaLas Spooky blue Bedienungsanleitung Seite 18

J
−
3
= ⋅
H 5 10
single impulse
2
m
The irradiance relates to the exposure through the impulse duration. Hence, the irradiance of the single
impulse is calculated to:
H
single impulse
=
E
single impulse
t
impulse
Taking the circular laser-emitting area into account, the maximal permissible laser power for this criterion is
expressed in:
= ⋅ =
P E A 324,89
laser Laser
Result a): P = 25,51mW
laser, max
b) The average exposure of a pulse repetition of the exposure duration T may not exceed the MPE value of a
single impulse of the exposure duration T ( T= 0,25s, "eyelid reflex")
The total exposure time of a single-impulse of duration T is restricted considering Table 6
J
0,75
= ⋅ ⋅ =
H 18 T C 6,36
T 6
2
m
As N = 32,5 is the total number of pulses that occur within the total exposure duration, this criterion leads to
an average exposure of a single impulse to:
H
= T
H
single impulse, averaged
N
The related irradiance apprises to:
H
single
=
E
single impulse, averaged
Hence, the maximum permissible for this criterion is calculated to:
= ⋅ =
P E A 12,72
laser tunnel
Result b): P = 998,55 mW
laser, max
Seite - 18 –
J
−
3
⋅ = ⋅
C 5 10
6
2
m
J
−
3
⋅
5 10
2
m
= =
324,89
−
6
⋅
15,39 10 s
W
−
6 2
⋅ ⋅ =
78,53 10 m
2
m
J
2
m
J
6,36
2
m
−
3
= = ⋅
195,69 10
32,5
195,69
impulse, averaged
=
t
15,39
impulse
W
−
3 6 2
⋅ ⋅ ⋅
10 78,53 10 m
2
m
W
2
m
25,51 mW
1
to:
J
2
m
J
−
3
⋅
10
2
m
3
= ⋅
12,72 10
−
6
⋅
10 s
=
998,55 mW
Spooky Blue
W
2
m