
Mcd vs. Angle
Operating temperature of the Cree LED Module LMR4 is between 0 °C and 50 °C. The lifetime and performance esti-
mates described in this document apply only if the product’s Thermal Management Guidelines (below) are adhered to
and no modifications are made except as described in this document.
The LED module is flexible; use of the detachable mounting plate or optional heat sink depends on the design require-
ments. Secondary optics may be added to the module diffuser and lens but will likely reduce light output and could
also alter the color characteristics of the final luminaire design.
Thermal Management Guidelines
The Cree LED module LMR4 is designed to perform in a variety of environments; however, the LED module lifetime is
highly dependent upon the operating temperature. To achieve lifetime and performance estimates, and maintain the
warranty, the final design cannot exceed 70 degrees Celsius at thermal equilibrium, based on the thermocouple (Tc)
location shown in the Form Factor section above.
Photometry
The following photometry results are based on independent testing.
Intensity (Candlepower )
Summary
a Freeware IES viewer that I downloaded
Zonal Lumens Summary
Angle
0
5
15
25
35
45
55
65
75
85
90
Mean CP
365.33
362.08
340.77
300.22
245.59
184.32
124.33
71.01
37.00
27.62
0.10
Zone
0-30
0-40
0-60
0-90
Lumens
242.9
381.5
607.6
700
%Lamp
35%
55%
87%
100%
%Fixt
35%
55%
87%
100%
Copyright ? 2010 Cree, Inc. All rights reserved. The information in this document is subject to change
without notice. Cree, the Cree logo and TrueWhite are registered trademarks and EasyWhite is a
trademark of Cree, Inc.
3 CLM-DS03-LMR4-EZW Rev 0
Cree, Inc.
4600 Silicon Drive
Durham, NC 27703
USA Tel: +1.919.313.5300
www.cree.com/modules