Panasonic ET-D3QW200, Operating Instructions Manual

4-ENGLISH

Read this fi rst! (continued)

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Hazard distance (IEC 62471-5:2015)

The distance from the projection lens surface, at which the emission reaches the 

Accessible Emission Limit (AEL) of risk group 2, is known as the hazard distance (HD) 

or safety distance. The area where the emission exceeds the Accessible Emission Limit 

of risk group 2 is called the hazard zone (HZ).

Within the hazard zone, never look into the light projected from the projector. The eyes 

may be damaged by direct irradiation even if you look at the light just for a moment. If 

you are outside the hazard zone, it is considered to be safe in all circumstances except 

deliberately staring into the light projected from the projector.

HZ

HZ

D3

D4

HD

HD

D1
D2

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Risk group

The combination of the projector and the projection lens is categorized as risk group 2 

when the hazard distance is 1 m (39-3/8") or less. It is categorized as risk group 3 when 

the hazard distance exceeds 1 m (39-3/8"), and it will be for professional use instead of 

consumer use.

In case of risk group 3, there is a possibility of damaging the eyes by direct irradiation 

when looking into the projection light from inside the hazard zone even for a moment.

In the case of risk group 2, safe use without damaging the eyes is possible in all 

circumstances except deliberately staring into the light projected from the projector.

The risk group for the combination of the projection lens and a compatible projector is as 

follows.

Projector model

Risk group

PT-RQ50K

Risk group 2