What is the CRI and CCT of the LED? Max lux?
1769411
Just gathering info from hexbright.com website, (led is "CREE XM-L bin U2"), and cree.com product info 'http://www.cree.com/products/pdf/XLampXM-L.pdf' the color temp is around 6500K, cree says typical CRI is 65 for this temp. You know much more about this than I do to even ask this. I know there were lots of light geeks on the kickstarter board discussing this, so someone knows this. Ask at hexbright, they're friendly and helpful. I have several of these and love them.
1769412
It is a CREE XM-L U2 led temperature about 6000. It is running at 500 lumens.
1857781
There are 3 modes: 800/1600/2400DP . Each one has a different LED color. (green, blue, red)
2238304
According to the manufacturer, these bulbs have a CRI of 80. http://www.cree.com/~/media/Files/Cree/Lighting/Lamps/Bulb/CreeBulbDataSheet.pdf
847819
The best way to confirm that is to remove a bulb from your CV and look up specs. I would caution you however, that these LEDs fit loosly in the bulb sockets, and they are really not as bright as you'd think. In fact, mine progressively grew dimmer and finally just gave up. I went back to 194 regular bulbs.
151156
CRI = >80Reference this sheet for all specifications. http://www.feit.com/documents/pdf/PAR30L_5K_LEDG5_SpecSheet.pdf. I have a few dozen of these bulbs in a commercial setting and spec this on a regular basis. The color rendering index is quite high.
1931020
60 Hz Full comparison is here http://www.tomshardware.com/reviews/vp2770-led-s27b970d-review,3426.html
1422110
I don't remember. It's been quite a while since I bought it. Full brightness is achieved immediately on this bulb.
1741029
I don't know the output in lumens, but for my model the color is daylight or cool white, not warm white like and incandescent. Possibly you can specify a color temperature?
1635957
The lamp measures about 8 fc (90 lux) on axis at 3 ft and falls to about 50% (4 fc) 30 degrees off axis so it is a fairly narrow central beam although not a spot light. It is a poorly defined beam pattern so there is still significant flux beyond 45 degrees off axis. Color temperature appears to be ~5500K (daylight) although I did not measure it. These are DLRs (Daylight Running Lights) and not intended to be used for driving illumination.
2148275
1800 LUMENS ! ... so say my measurements (electro-optics engineer)LEDs are RED 630 nm (they say) - I see 620 to 630 nm.BLUE LEDs are 460 nm. (they say) - I see 460 to 470 nm.Uses two power supplies: Output of approx 64 VDC at 150 mA(in case you need to buy a new power supply!)This is very over-priced. Available direct from China they sell for $40.
146121
There is no information on the package regarding the lumens, but their website might provide an answer to your question. Per the package- maxximastyle.com
88697
I went to streamlight's web site and peak output for IR LED is 880nm at peak or high setting. You can probably quater that for each of the settings from dimmist to brightest. Go to their website for a spec sheet, hope this helps...
151155
CRI = &gt;80 Reference this sheet for all specifications. http://www.feit.com/documents/pdf/PAR30L_5K_LEDG5_SpecSheet.pdf. I have a few dozen of these bulbs in a commercial setting and spec this on a regular basis. The color rendering index is quite high.
1549084
It's not stated on the light nor the user Instruction manual. I went to Cooper to see if they say and their specification sheet does not have it. They do have a phone number you can call 1-800-334-6871. But, from what I know about LED lighting as a Maintenance Manager I have never seen a lumen output for them due to they don't have a base output for each lamp.
868264
Lumens is not dependent on the voltage, voltage impacts amps - watts and lumens are constants. The color you choose and the CRI you opt for will have an impact. So you may have anywhere from about 3600 lumens (highest CRI at lowest temperature color) to 4596 lumens (lowest CRI and highest temp color). You need to select the fixture appropriate to your needs and then look at its photometric data (the IES sheet) to see what candela it will put out and how many footcandles may be measured at any given distance, which at some point will effectively become zero. Michael Messuri gave you a great link to see the data reconfigured into a graphical representation. Lumens is not dependent on the voltage, voltage impacts amps - watts and lumens are constants. The color you choose and the CRI you opt for will have an impact. So you may have anywhere from about 3600 lumens (highest CRI at lowest temperature color) to 4596 lumens (lowest CRI and highest temp color). You need to select the fixture appropriate to your needs and then look at its photometric data (the IES sheet) to see what candela it will put out and how many footcandles may be measured at any given distance, which at some point will effectively become zero. Michael Messuri gave you a great... » Read More Lumens is not dependent on the voltage, voltage impacts amps - watts and lumens are constants. The color you choose and the CRI you opt for will have an impact. So you may have anywhere from about 3600 lumens (highest CRI at lowest temperature color) to 4596 lumens (lowest CRI and highest temp color). You need to select the fixture appropriate to your needs and then look at its photometric data (the IES sheet) to see what candela it will put out and how many footcandles may be measured at any given distance, which at some point will effectively become zero. Michael Messuri gave you a great link to see the data reconfigured into a graphical representation. « Show Less
13305
The box (I still have it.) says the QP2A-X is rated at 280 lumens at its highest setting. Also, the LED puts out a slightly greenish- white color. Kind of like looking into the light aimed at your mouth when you are in the dentist chair. You only notice it's greenish tint if you use a LED light with a pure white emitter next to it to compare.
2264491
I would believe that discrepancy is a typo. This type of light mush use a switch rectifier to convert AC to DC . It can handle 85 -265 V. I just used a photometer (the meter for photographic use) to measure the luminance (roughly means brightness) of this LED at a distance of 1 ft. It has about 4000 lux which can be converted to 4700 lumens. This is way above the nominal value of 2700 lm. I am guessing maybe 2700 lm is an average value during the life span. The LED I measure only a few months old. After 5 to 10 years it might drop to around2700 lm. Hope this helps, more or less.