What are the lumens measured at 1', 2' ,3' and 4'?
777460
With LEDs you can't really translate lumens. I used the light with pretty good results. You want an open area, as to trap the heat released by the lights side exhaust. The light itself doesn't cause much heat, but the fan exhaust do!
777461
Lumens is a measure of brightness and useful when measuring white light from traditional light bulbs but not a very useful metric for LEDs. LED grow lights maximize photosynthesis, not brightness. For example, the red color is very dim compared to the other colors of the spectra, but essential for photosynthesis.
2084803
With 18650 3.7V Li-Ion, with the focus at max spread it produces about 4,900lux which is roughly equal to 460 lumens sq/ft. This was at a distance of 1 foot with a coverage area of about a 1.5 foot dia. When focused the light produced over 90,000 lux @ 1 foot (i'll let others do that math on that one).
1487706
I am honestly not sure about the lumens. It is a good keychain light and serves it purpose well for what it is.
437703
Yes, I have not measured but the 2.4x.5 sounds right. I found them to be very close to the one's I used to get at HD, I believe they were Phillips. Btw, of the three bulbs I initially installed, one failed after about a month but the others are still working(about 4-5 months). I still think they are a good value
1520290
About 1/4"....maybe less....and it is not backlit. I suspect you need something bigger and brighter...right? This is not it.
781895
Allen, Actually the precise known distance is unknown, I did talk with the rep from cygolite and they were not sure them selves. I know that this is 360 lumens
241307
Don't know the lumens but it is quite bright and adjustable from dim to bright.
1015576
1800 lumens is just enough to light up a specific area. You can use it in your room when you're working. It's really bright. I've had the original bulb replaced with this one and it's brighter for me Triangle Bulbs T50026 - FML27/65K, 27 Watt, 6500K Natural Daylight, 4-pin GX10q-4 Base, FML Compact Fluorescent Light Bulb
835489
Specifications* Light Source: 1 (white) 3W (700mA) LED 50,000hrs* Beam Angle: 6° (installed), 9° (included) * Illuminance (6°): 4,120 lux @ 2m * Illuminance (9°): 1,335 lux @ 2m * Input Voltage: Auto-ranging 100 - 240VAC 50/60Hz* Power and Current: 4W, 0.1A @ 120VAC 60Hz * Power and Current: 4W, 0.1A @ 230VAC 50Hz * Weight: 0.9lbs (0.4 kg)* Size: 7.6 x 4.2 x 5.9in (193 x 105 x 148mm)* Approvals: CEBTW, while a little pricey, these work very well. I use them on a disco ball, all night, no issues.
1389854
Sorry I have no way of measuring the lumens, but it is very bright at focal point, hurts the eyes if stared directly even from 5 feet away. I'm happy with the brightness. The only thing is it's small
927028
As one who is getting older also I find that 750 lumens, the only real measure is adequate for general work but not detail. I use them to reduce energy cost and A/C but still miss my 85 watt incandescants.
253755
Amanda, I know that it provides 3780 lumens, however, I do not have any photometric information at this time. That factory is in the process of moving, but if I can get anything further from them I will get back to you. Sorry -- Barry
371801
If measured at the LED, I would estimate them to be around 500 lumens, maybe higher. That is only my guess. Hard to gauge because of the spread of the light. It lights up a decent size area very nicely, unlike a flashlight would. Great for garden areas. I put two of them up in my smallish backyard and it lights the whole area well.
1909211
John - I can't give you the specific lumen values . . . from an 'application' standpoint, the light is adequate for reading or workspace lighting (in close proximity). It is not sufficient for general room illumination or outdoor lighting
37924
The manufacturer did not specify. Suggest you contact UCO/Industrial Revolution. I'd guess and say the low level setting is about 2/3 to 3/4 less than high setting. Manufacturer says high is 150 lumen but I think its more like 100-125 which is still very good for the price.
1034321
I don't see Lumens mentioned on the box but here's what it does say: MR16/C GU5.3/G5.3 12 V 50 W EXN 36 degrees. Hope this is helpful information.
1985870
4 footers are the ones I bought...they're more than adequate though it's apparent they were not the heavier duty ones that we were accustomed to using of over the last few decades...and they take the "thinner" fluorescent tubes that I like much better than the larger diameter ones. and those newer tubes are available with a high degree of daylight illumination.... each tube is about 9 bucks locally.