Effective Lumen Measurement
All the
research and all the leg was done for you!
LED
Technology differs from all
previous light engine designs, in that the light output of any LED lamp is
wholly
directional. Previous light technologies consist of omni directional
light sources, emitting light in all directions. Various housings around
the actual lamp have attempted to focus light into wanted directions.
However even the most efficient of reflector designs still result in
significant losses. A fluorescent tube, by mere design, emits light in all
directions. The luminous flux rating manufacturers put to their lamps is
representative of this.
Below is an example of the mean lumens rating of standard Halophosphate T8
Fluorescent Tubes
Description
Power (Watts) Mean Lumens
600mm T8 Fluorescent, 4000K 18
1000
1200mm T8 Fluorescent, 4000K 36
2200
1500mm T8 Fluorescent, 4000K 58
3300
1800mm T8 Fluorescent, 4000K 70
4000
Standard T8
Halophosphate has a luminous efficacy of approximately 58 lumens per watt.
It should be noted that many manufacturers only quote the initial lumens
on their lamps. The initial lumens represents the light output of the lamp
in the first 1000 hours or less of operation. Mean lumens is more
representative of the light output after this initial ‘burn in’ period and
can be 20% less than the initial lumen rating.
By comparison
the LED T8 tubes emit light in one direction only at a beam angle of 120º,
which is 1/3rd the light radiation pattern of standard fluorescent tubes.
The vast majority of fluorescent tube fixtures are designed to emit light
in one direction, with a similar 120º beam spread, a large proportion of
the total light output from a tube is lost, even with chrome reflectors
which have been shown to improve light output by only 20 to 30%.
Therefore when
comparing LED T8 Tubes against a fluorescent T8, a more representative
measure is needed to indicate a comparative light output. With
various tests that have been performed, the actual light utilization of a
standard T8 fluorescent tube has been determined to be 65% on average. Our
LED Tubes have a utilization efficiency of 95% due to their directional
nature. This results in a 46% increase in Effective Lumens output when
compared against a standard T8 Tube.
Description
Power (Watts) Actual Lumens Effective Lumens
600mm LED T8, Commercial Grade - 5000K 8 950
1390
1200mm LED T8, Commercial Grade - 5000K
15 1500
2190
1200mm LED T8, Commercial Grade, HP - 5000K 18
1900
2770
1500mm LED T8, Commercial Grade - 5000K
20 2300
3360
LED Tubes utilize 46%
more of their total light output when compared against a standard T8
Types of
LED
Lighting
Today there are
LED Plug & Play
products that can replace virtually any type of general bulb or lamp, commercial lighting products like,
spot and flood lights, track lights, down
lights, side lights, electronic displays, remote controlled, motion activated,
recessed can, in-ground, color washers, street and parking lot lighting, solar powered and
more.
We are not currently cataloging all these options here, but, you are
welcome to
Contact Us with any special requests
for any of these types of products.
We are initially focusing on
T-8 Fluorescent Replacement
Tubes,
MR-16 Spots,
and
Grow Lighting.
On this site we have selected products that we think will gain wider acceptance,
and do more good, sooner.
