Gotham 11 LAF Square Lens SpecSheet User Manual
Page 3
© 2006-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 04/10/14. Specifications subject to change without notice.
PAGE 3 OF 3
LAF-11-SquARE-LEnS
LAF 2/26DTT 11RW T73
(2) 26W F26DTT/27K LAMP, 1.3 S/MH, 3600 RATEDLUMENS, TEST NO. 2192100502
PH
OTO
M
ET
RY
Distribution Curve
Distribution Data
Output Data
Coefficient of Utilization
Illuminance: Single Luminaire 30” Above Floor
11” LAF
Square Lens
Wet Location, Horizontal Lamp, Double Twin-Tube or Triple-Tube
From 0°
cp. Lumens
0°
662
5°
657
63
15°
637
181
25°
593
274
35°
508
318
45°
374
287
55°
210
193
65°
111
113
75°
55
60
85°
11
16
90°
0
Zone Lumens %lamp
0°-30° 515
14.33
0°-40° 833
23.15
0°-60° 1312
36.46
0°-90° 1500
41.16
90°-180° 0
0.0
0°-180° 1500
41.16*
* Fixture efficiency
50%
10%
beam angle 63.6° beam angle 102.4°
Initial fc
fc at
fc at
Mount at beam
Beam beam
Beam beam
height center
diameter edge
diameter edge
8'
21.9
6.8' 10.9
13.7'
2.2
10'
11.8
9.3' 5.9
18.7'
1.2
12'
7.3
11.8' 3.7
23.6'
0.7
14'
5.0
14.3' 2.5
28.6'
0.5
16'
3.6
15.8' 1.8
33.6'
0.4
ρ f
20%
ρc
80%
50%
30%
ρw 50% 30% 50% 30% 50% 30%
1 45 43 42 41 40 40
2 40 38 38 36 37 35
3 36 33 35 32 33 32
4 33 30 31 29 31 28
5 30 27 29 26 28 25
6 27 24 26 23 25 23
7 25 21 24 21 23 20
8 22 19 22 19 21 18
9 20 17 20 17 19 17
10 19 15 18 15 18 15
0°
45°
140
280
420
560
700
90°
PHOTOMETRY NOTES
•
Tested to current IES and NEMA standards under stabilized laboratory conditions.
•
Actual performance may differ as a result of end-user environment and application.
•
Consult factory or IES file for microgroove baffle, black cone or other photometric reports.