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Unread 08-25-2012, 09:48 PM   #1
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Rigid Dually and Dually D2 Light Patterns

While we were talking Jeeps and offroading, my buddy noticed that the advertised light patterns for the Rigid Dually and Dually D2 LEDs are not to scale in a linear fashion - so the patterns that you see in the .pdfs don't actually represent what the real light distribution looks like in spread or distance. You can see from the scales on the advertised diagrams that they aren't spread out evenly and they are actually terribly misleading.

Here is a .jpeg that has reduced and/or stretched the light patterns along a true linear/horizontal scale to show what the actual light patterns look like in both distance and spread.

See how different they are from the advertized patterns? Interesting stuff! Happy LED hunting.

Note that the units are in Lux. One lux is equal to one lumen per square metre.

0.27 lux is equal to a full moon on a clear night. Therefore, IMHO, the dark red pattern at 0.25 lux can be pretty much disregarded.

1 lux is equal to a full moon overhead at tropical latitudes.

50 lux is equal to family living room lights.

100 lux is equal to a very dark overcast day.

320–500 lux is equal to office lighting.

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Unread 08-26-2012, 12:44 AM   #2
What was I thinking?
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Good stuff, Jezz!
I added this to the JK-F.A.Q. in the lighting section.
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Unread 08-26-2012, 01:34 AM   #3
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Thanks. After my buddy pointed it out that the advertised patterns were so wonky - we chopped one apart and scaled it out evenly. We were shocked at how different the patterns look. The scaled patterns aren't totally perfect and nice-and-neat, but they certainly are more representative of what you'll get out of the box. You can see that the advertised patterns are so out-of-whack it really makes me wonder why Rigid did something like that.

One of the best examples of the false-advertising light pattern scale is for the "Dually Diffusion" pattern, where they go from 0m to 10m (10-meters), then 10m to 11m (1-meter) in the same amount of linear distance on the pattern... (???) This is totally misleading. When you scale it back, the 1-meter section of the pattern practically disappears. Also all of the advertised patterns are shown to be about 3-4 times wider than they actually are. The modified patterns are adjusted properly to scale for both length and spread.

Interesting to note that the Dually D2 Driving and Dually D2 Wide scaled patterns are so close that they are nearly indistinguishable - the real klincher is that the Dually Hybrid Flood also appears to get practically the same pattern of these for half the price.
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Unread 08-26-2012, 08:54 AM   #4
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Did a little nite wheeling with the D2 floods last week. Huge differance compared to the stock or even the IPFs I have.
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Unread 01-05-2015, 09:01 PM   #5
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flood or diffused

I wish I had found this post prior to buying my diffused. I know this is an old thread but maybe someone could assist me. Like I said, I bought the diffused for reverse lights in my LoD bumper. They throw some nice light but it's kind of dim compared to what I expected. I've noticed that many people go with the flood for reverse lights so I started to think I made a bad decision to go diffused. I contacted Rigid and they have been more than accommodating in swapping out my diffused lenses for flood for a price but I don't want to make another uninformed decision. What lens are you using for a reverse light given the comparison on the scaled graphics? I've watched videos and Googled images until my eyes are bleeding but I can't decide on which lens to go with. My concern with the floods is that I won't get any illumination to the sides immediately behind me or where I can see out of the side mirrors. Anyone with floods have an opinion on this?
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