Instructions

HD2402 - 37 - V1.3
if Alpha > 100mrad it is assumed that C
α
= 100
if L
R_real
≤ 2.8
•
10
5
⇒ t > 10s (g limit satisfied)
if 2.8
•
10
5
≤ L
R_real
≤ 8.89
•
10
6
⇒ t_lim = (5
•
10
5
/L
R_100
)
4
[s] (h limit satisfied)
if 8.89
•
10
6
≤ L
R_real
⇒ t_lim < 10μs (i limit)
if 1.7mrad ≤ Alpha < 100mrad it is assumed that C
α
= Alpha
if L
R_real
≤ 2.8
•
10
7
/Alpha ⇒ t > 10s (g limit satisfied)
if 2.8
•
10
7
/Alpha ≤ L
R_real
≤ 8.89
•
10
8
/Alpha ⇒ t_lim = (5
•
10
7
/(L
R_real
•
Alpha))
4
[s]
(h limit satisfied)
if 8.89
•
10
8
/Alpha ≤ L
R_real
⇒ t_lim < 10μs (i limit )
• Diameter d [m] – Distance R [m]:
o Alpha [rad] angle subtended by the source.
o Omega [sr] solid angle subtended by the source.
o L
R
(100mrad) [W/(m² sr)] radiance calculated assuming that the source angular
dimension is 100mrad.
o L
R
(1.7mrad) [W/(m² sr)] radiance calculated assuming that the source angular
dimension is 1.7mrad.
o L
R
(real) [W/(m² sr)] real radiance calculated starting from the entered geomet-
ric parameters.
o t_lim [s] exposure time limit, that is the time period during which a source can
be observed without damages to the visual system. This value is calculated with
the following procedure:
if Alpha > 100mrad it is assumed that C
α
= 100
if L
R_real
≤ 2.8
•
10
5
⇒ t > 10s (g limit satisfied)
if 2.8
•
10
5
≤ L
R_real
≤ 8.89
•
10
6
⇒ t_lim = (5
•
10
5
/L
R_100
)
4
[s] (h limit satisfied)
if 8.89
•
10
6
≤ L
R_real
⇒ t_lim < 10μs (i limite)
if 1.7mrad < Alpha < 100mrad it is assumed that C
α
= Alpha
if L
R_real
≤ 2.8
•
10
7
/Alpha ⇒ t > 10s (g limit satisfied)
if 2.8
•
10
7
/Alpha ≤ L
R_real
≤ 8.89
•
10
8
/Alpha ⇒ t_lim = (5
•
10
7
/(L
R_real
•
Alpha))
4
[s]
(h limit satisfied)
if 8.89
•
10
8
/Alpha ≤ L
R_real
⇒ t_lim < 10μs (i limit)
if Alpha < 1.7mrad it is assumed that C
α
= 1.7
if L
R_1.7
≤ 1.65
•
10
7
⇒ t > 10s (g limit satisfied)
if 1.65
•
10
7
≤ L
R_1.7
≤ 5.23
•
10
8
⇒ t_lim = (2.94
•
10
7
/(L
R_1.7
))
4
[s] (h limit satis-
fied)
if 5.23
•
10
8
≤ L
R_1.7
⇒ t_lim < 10μs (i limit)
The exposure limit time in seconds is displayed aside radiance values.
If the Include in Report box is selected, table data will be included in the final report.