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Beam Spread Guide:
Ellipsoidals
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| Manufacturer |
Unit |
Beam |
Field |
Candela |
Lamp
|
Frame |
| ETC |
Source Four 5 |
0.1 |
0.12 |
1191900 |
HPL-575 |
14" x 14" |
| ETC |
Source Four 10 |
0.14 |
0.19 |
729060 |
HPL-575 |
12" x 12" |
| ETC |
Source Four 14 |
0.21 |
0.26 |
352159 |
HPL-575 |
7.50" x 7.50" |
| ETC |
Source Four 19 |
0.26 |
0.32 |
250560 |
HPL-575 |
6.25" x 6.25" |
| ETC |
Source Four 26 |
0.32 |
0.45 |
138330 |
HPL-575 |
6.25" x 6.25" |
| ETC |
Source Four 36 |
0.47 |
0.61 |
71340 |
HPL-575 |
6.25" x 6.25" |
| ETC |
Source Four 50 |
0.65 |
0.93 |
30363 |
HPL-575 |
6.25" x 6.25" |
| ETC |
Source Four 70 |
1.14 |
1.4 |
17593 |
HPL-575 |
7.50" x 7.50" |
| ETC |
Source Four 90 |
1.63 |
1.88 |
10537 |
HPL-575 |
7.50" x 7.50" |
| Altman |
360Q 4.5x6.5 |
0.61 |
0.95 |
38250 |
EHG-750 |
7.50" x 7.50" |
| Altman |
360Q 6x9 |
0.41 |
0.63 |
66000 |
EHG-750 |
7.50" x 7.50" |
| Altman |
360Q 6x12 |
0.3 |
0.46 |
115500 |
EHG-750 |
7.50" x 7.50" |
| Altman |
360Q 6x16 |
0.21 |
0.33 |
141000 |
EHG-750 |
7.50" x 7.50" |
| Altman |
360Q 6x22 |
0.14 |
0.19 |
164250 |
EHG-750 |
7.50" x 7.50" |
| Altman |
3.5Q 3.5x6 |
0.37 |
0.69 |
15000 |
EHD-500 |
4.125" x 4.125" |
| Altman |
3.5Q 3.5x8 |
0.37 |
0.5 |
16000 |
EHD-500 |
4.125" x 4.125" |
| Altman |
3.5Q 3.5x10 |
0.37 |
0.41 |
17300 |
EHD-500 |
4.125" x 4.125" |
| Altman |
3.5Q 3.5x12 |
0.3 |
0.32 |
20000 |
EHD-500 |
4.125" x 4.125" |
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| Parcan |
|
Beam |
Field |
Candela |
Lamp |
Frame
|
| ETC |
S4 Par VNSP |
0.14 |
0.26 |
310000 |
HPL-575 |
7.50" x 7.50" |
| ETC |
S4 Par NSP |
0.17 |
0.33 |
218000 |
HPL-575 |
7.50" x 7.50" |
| ETC |
S4 Par MFL (V) |
0.21 |
0.39 |
102000 |
HPL-575 |
7.50" x 7.50" |
| ETC |
S4 Par MFL (H) |
0.28 |
0.69 |
- |
- |
7.50" x 7.50" |
| ETC |
S4 Par WFL (V) |
0.3 |
0.57 |
40500 |
HPL-575 |
7.50" x 7.50" |
| ETC |
S4 Par WFL (H) |
0.48 |
0.87 |
- |
- |
7.50" x 7.50" |
Multiply ratio by throw distance to
calculate beam or field diameter.
Divide Candela number by the throw distance squared to calculate
foot-candles
All measurements are based on the lamp listed, see manufacturer for
additional data.
Definitions:
Field Diameter -The diameter of the
base of a cone shaped beam where the perimeter of the base is defined
by where the intensity is 10% of the maximum intensity.
Beam Diameter - The diameter of the
base of a cone shaped beam where the perimeter of the base is defined
by where the intensity is 50% of the maximum intensity.
| Generic Beam Spread Information |
| |
|
| Degree |
Beam |
| 5 |
0.088 |
| 10 |
0.174 |
| 15 |
0.26 |
| 20 |
0.36 |
| 25 |
0.44 |
| 30 |
0.54 |
| 35 |
0.64 |
| 40 |
0.72 |
| 45 |
0.82 |
| 50 |
0.94 |
| 55 |
1.04 |
| 60 |
1.16 |
| 65 |
1.28 |
| 70 |
1.4 |
| 75 |
1.54 |
| 80 |
1.68 |
| 85 |
1.84 |
| 90 |
2 |
This guide is intended as a quick
reference see manufacturer photometrics for actual performance.
For a downloadable and printable
version please click here
Altman rentals Carries a whole Range of
Lighting products for the entertainment industry. For more information
about the lighting fixtures we carry please check out the manufacturer
websites:
Electronic Theatre Controls
Altman Stage Lighting
Arri
Call 914-476-RENT or e-mail us at INFO@ALTMANRENTALS.COM
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