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601
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426-03
F70 Series
17
RA
TH
sw
PD
HD
DIFFUSE
s
w
RZ
s
w
s
w
PR
HD
REFLECTION
RESTRICTED
AREA
R
E
S
T
R
I
C
T
E
D
A
R
E
A
Image 1-3
RA
Restricted Access location (Enclosed projection
area)
PR
Projector.
TH
Theater (observation area).
RZ
Restriction Zone
PD
Projection Distan
SW
Separation Width. Must be minimum 1 meter.
Restriction zone (RZ) based on the HD continued.
For this type of setup 3 different HD shall be considered:
•
HD as discussed in "High Brightness precautions: Hazard Distance (HD)", page 6 , relevant for intrabeam
exposure.
•
HDreflection : the distance that has to be kept restrictive related to the reflected light from the rear
projection screen.
•
HDdiffuse : the relevant distance to be considered while observing the defuse surface of the rear projection
screen.
As described in "High Brightness precautions: Hazard Distance (HD)", page 6 , it is mandatory to create a
restricted zone within the beam areas closer than any NOHD. In the enclosed projection area the combination
of two restricted zones are relevant: The restricted zone of the projected beam toward the screen; taking into
account 1 meter Separation Width (SW) from the beam onward. Combined with the restricted zone related to
the rear reflection from the screen (HDreflection); also taking into account a 1 meter lateral separation.
The HDreflection distance equals 25% of the difference between the determined HD distance and the
projection distance to the rear projection screen. To determine the HD distance for the used lens and projector
model see graphs in chapter "HD in function of the lens Throw Ratio (TR)", page 8 .
HDreflection = 25% (HD
–
PD)
The light emitted from the screen within the observation shall never exceed the RG2 exposure limit,
determined at 10 cm. The HDdiffuse can be neglected if the measured light at the screen surface is below
5000 cd/m² or 15000 LUX.
1.6 HD in function of the lens Throw Ratio (TR)
TR (Throw Ratio)
The ratio of the distance to the screen (throw) to the screen width.
Summary of Contents for F70 - 4K6
Page 1: ...ENABLING BRIGHT OUTCOMES User Manual F70 Series...
Page 8: ...601 426 03 F70 Series 8 14 3 FS70 4K6 132 14 4 FS70 W6 134...
Page 26: ...601 426 03 F70 Series 26 Safety...
Page 38: ...601 426 03 F70 Series 38 Getting to know the projector...
Page 46: ...601 426 03 F70 Series 46 Lenses...
Page 68: ...601 426 03 F70 Series 68 Getting started...
Page 74: ...601 426 03 F70 Series 74 Source menu...
Page 76: ...601 426 03 F70 Series 76 Image 7 2 Image sub menu visible on the LCD Image menu...
Page 120: ...601 426 03 F70 Series 120 Status menu...
Page 124: ...601 426 03 F70 Series 124 3D...
Page 125: ...125 Overview Update Projector Firmware 601 426 03 F70 Series User Maintenance 12...
Page 127: ...127 601 426 03 F70 Series Cleaning the projector 13...