PRG VL6C+ User Manual
Page 61
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VL6C+ ™ SPOT LUMINAIRE USER MANUAL
53
Photometric Data
VL6C+ Luminaire with 700W Short Arc Metal Halide Lamp
1
Multiply throw distance by Tn to determine coverage.
To calculate center beam illuminance (I) at a specific distance (D):
-- if (D) is in feet, (I) is in foot candles
-- if (D) is in meters, (I) is in lux
* All data taken with seasoned light source at 20 hours of life.
ZOOM LENS
POSITION
CANDELA*
(cd)
BEAM ANGLE
(degrees)
BEAM DIAMETER
(Tn)
1
FIELD ANGLE
(degrees)
FIELD DIAMETER
(Tn)
1
NFOV
297,000
15.0°
.263
18.5°
.326
MFOV
104,000
25.0°
.443
30.5°
.545
WFOV
50,000
34.5°
.621
42.5°
.777
I =
cd
D
2
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