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Please Note:
All prices are in Australian dollars
and include
GST of
10%
If the item is a bicycle light
pricing also includes postage.
All international purchases will
have GST
removed.
Click here for Specials.
Click here for
light comparison page.
LED Calculations
Triple Cree XRE Q5 at 1000ma
Min 107 x
2.25 x 3 x 0.92 = 664.47
Max 114 x
2.25 x 3 x 0.92 = 707.94
Triple Cree XRE R2 at 1000ma
Min 114 x
2.25 x 3 x 0.92 = 707.94
Max 121 x
2.25 x 3 x 0.92 = 751.41
Quad Cree XRE R2 at 1000ma
Min 114 x
2.25 x 4 x 0.92 = 943.92
Max 121 x
2.25 x 4 x 0.92 = 1001.88
Explanation.
Cree XRE
R2 LED generates 114-121 Lumens.
The LED
lumen output is not linear and slightly decreases as the current
increases thus 2.25@1000ma not 2.86 as I previously thought.
Multiply
by the number of LEDs
0.92 is
the efficiency of the optic. (92% transmission)
Lumen8r-10W
~550
Lumens
Lumen8r-LED
Triple Cree R2
~720
Lumens
Prototype
Quad Cree R2
~1000
lumens
LED Calculations
Triple Cree XRE Q5 at 1000ma
Min 107 x 2.25 x 3 x 0.92 = 664.47
Max 114 x 2.25 x 3 x 0.92 = 707.94
Triple Cree XRE R2 at 1000ma
Min 114 x 2.25 x 3 x 0.92 = 707.94
Max 121 x 2.25 x 3 x 0.92 = 751.41
Quad Cree XRE R2 at 1000ma
Min 114 x 2.25 x 4 x 0.92 = 943.92
Max 121 x 2.25 x 4 x 0.92 = 1001.88
Explanation.
Cree XRE R2 LED generates 114-121 Lumens.
The LED lumen output is not linear and slightly decreases as the current increases thus 2.25@1000ma not 2.86 as I previously thought.
Multiply by the number of LEDs
0.92 is the efficiency of the optic. (92% transmission)
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Lumen8r-10W ~550 Lumens |
Lumen8r-LED Triple Cree R2 ~720 Lumens |
Prototype Quad Cree R2 ~1000 lumens |
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