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Hazard distance (IEC 62471-5:2015)
The distance at which the level of exposure has reached the level of the applicable Exposure Limit Value is known
as the hazard distance (HD) or safety distance.
Do not look into the projected light from inside the hazard distance (within RG3 range). The eyes may be damaged
by the direct irradiation. It is considered to be safe to look into the projected light from outside the hazard distance
(within RG2 range).
D1
RG2
D2
Lens
ET-ELW21
ET-ELW22
ET-ELW20
Standard Zoom Lens/
ET-ELS20
ET-ELT22
ET-ELT23
*1 HD: Hazard Distance
*2 D1, D2, D3, and D4 change in accordance with projection lens shift amount. Each value in this table represents the maximum range.
Note
f The values in the table comply with IEC 62471-5:2015.
10 - ENGLISH
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HD
RG3
HD
*1
D1
*2
0.97
0.89
0.62
< 1.0
0.47
0.29
0.19
HD
D3
RG2
RG3
D4
D2
*2
D3
*2
0.97
1.13
0.89
1.03
0.62
0.72
0.47
0.55
0.29
0.34
0.19
0.23
(Unit: m)
D4
*2
1.13
1.03
0.72
0.55
0.34
0.23
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