Photometric Report

BLRD-1x4-2.5L-840-L18.ies

LTI Optics - www.ltioptics.com/ies Tested Thu May 22 14:56:00 2025 LM-63-2002
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Luminaire lumens
2,536 lm
Calculated from the candela data
Efficacy
121 lm/W
At 21.0 W input
Peak intensity
1,355 cd
At 0° vertical, 0° horizontal
Luminaire efficiency
74%
Of 3,417 rated lamp lumens
Polar Candela Distribution

Each curve is a vertical slice through the luminaire: the listed plane on the right, the plane 180° opposite on the left. 0° is straight down.

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3D Candela Distribution

Intensity in every direction. Distance from the centre is candela. Drag to rotate.

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Iso Candela Diagram

Looking up at the luminaire. The centre is straight down and the outer ring is the horizon (90°). Horizontal angles run clockwise from 0° at the top.

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Cone of Light

Light level directly below the luminaire, and the beam width on the floor where intensity falls to 50% of peak. Two widths are listed when the luminaire's 0–180° and 90–270° beams differ.

Mtg Height Light Level Beam Diameter (0°-180°) Beam Diameter (90°-270°)
6.0 ft 37.6 fc 10.9 ft 9.7 ft
8.0 ft 21.2 fc 14.5 ft 13.0 ft
10.0 ft 13.5 fc 18.1 ft 16.2 ft
12.0 ft 9.4 fc 21.7 ft 19.4 ft
14.0 ft 6.9 fc 25.3 ft 22.7 ft
16.0 ft 5.3 fc 28.9 ft 25.9 ft
24.0 ft 2.4 fc 43.4 ft 38.9 ft
32.0 ft 1.3 fc 57.9 ft 51.8 ft
40.0 ft 0.8 fc 72.4 ft 64.8 ft
48.0 ft 0.6 fc 86.8 ft 77.7 ft
56.0 ft 0.4 fc 101.3 ft 90.7 ft
64.0 ft 0.3 fc 115.8 ft 103.6 ft
File Details
File
BLRD-1x4-2.5L-840-L18.ies
Format
LM-63-2002
Photometric type
Type C
Horizontal symmetry
Symmetric in each quadrant
Angles
19 vertical × 5 horizontal
Light sources
96 × 35.6 lm
Luminous opening (W × L × H)
0.986703 × 3.98832 × 0.291673 ft
Input watts
21 W
Ballast factor
1
Candela multiplier
1
Ballast-lamp factor
1
Test lab
LTI Optics - www.ltioptics.com/ies
Test date
Thu May 22 14:56:00 2025
Test number
1
Lamp
LED 0.17875W 2835 MID POWER (65MA)
Lamp catalogue number
SPMWH1228MD5WATUVK