How many lumens? 1500 LUX is meaningless to me
1790321
Well all I can say is The light does not spread far into the room. It shines on the surface of a desk but does not light up the sides. Good for just one area. Hope this helps
1790322
1500 lux equals approximately 690 lumens at a half meter distance at 90 degrees light incidence...look up a lux to lumens conversion to get a sense of it since it's a function of distance and incident angle...i.e. this lamp is a fine desk lamp for all but the most meticulous of tasks...diff temps n intensities...I like it.
1790323
A given amount of light will illuminate a surface more dimly if it is spread over a larger area, so illuminance (lux) is inversely proportional to area when the luminous flux (lumens) is held constant. One lux is equal to one lumen per square metre: 1 lx = 1 lm/m2 = 1 cd.
1134259
1300 lumens according to the description. I've had the bulb replaced already with something brighter. It lasts long and work great, too. And it's cheaper. You can check it out here Triangle Bulbs T50026 - FML27/65K, 27 Watt, 6500K Natural Daylight, 4-pin GX10q-4 Base, FML Compact Fluorescent Light Bulb
212727
I just looked at this on a different website. The package said it's 157 lumens (cheaper on amazon).
2176154
Are you looking for 1500 out of the whole strip? I don't know if you are going to be able to get info like that from typical customer experience. I can say that the ones I got were pretty bright, but comparing them to the 1200 lumen flood light I just bought, I don't think they are as bright as it is nor do they have the same coverage.
1015578
To convert lumens to lux you need to know the angle of the light emitted and the distance from the light. There is an online calculator here: https://ledstuff.co.nz/data_calculators.php If this link doesn't work, let me tell you that with an angle of light emitted of 90 degrees and a distance of .25 meters (about 10 inches) the lux would be 15,650. FYI: to have an effect on S.A.D., 10,000 lux is recommended so this would exceed that number.
1821995
Their claims seem a bit off, it's more like 1200 to 1500 lumens. Elsewhere datasheets show 67 lumens per watt Epistar LEDs and current measurements show 23W INPUT, so you do the math subtracting for inefficiencies since output must be lower than input power. It's still a good lumen:price ratio but the actual lumen range is helpful to know for comparative purposes.
421208
both comments below are wrong, the lumens would be 95,000. given the info from the ushio website you can do the math {95,000(lux)x0.0122(hps[source])=1,159(par)}. the website says 1,150 par so you can do the math backwards to figure out the lumens. this can be done for mh bulbs too by substituting the source to (0.0141). regardless this is a badass bulb that pumps out 7,000 more lumens than the standard hps bulb! hope this helps!
2128350
Don't know about the actual "lumens" but, I bought these out of frustration with my previous Philips Sliverstar lamps that gave me only 15 months of life. And, that was after two complete sets of the Philips product. So far, I'm on my 3rd year of life on this set of GE Nighthawks, and their brightness seem comparable to my previous Philips Silverstars. Hope that helps.
1669482
I'm not sure what the lux number means but it is 26W, equivalent to 100W. The brightness is 1600 lumens
243044
I don't know how many lumens. You can definitely see the difference though. I am so glad I bought them.
1175126
It is not 1000 lumens. I would guess it was around 200-250, but I don't know for sure. However, I did not return it, even though I probably should/could have.
783178
not enough, you need full spectrum light @ 10,000 lumens for 20 to 30 minutes. also the item as shown is sold at Phillips web site for 99.00 I don't know if this is some kind of computer error.
1842960
80 Lux version, but I measured 93 lux at 10 meters with an Exetech meter. This light puts out almost exactly as much light at 10 meters as an XML equipped bike light driven at 2500 ma., but the Philips SafeRide measured only 620 ma drive current to it's 2 Luxeon LEDs.
282401
Simple answer, no. Not even close. It is bright, but not the advertised 1,000 Lumens.
425740
It is advertised as producing 1600 Lumens but a side by side test proves to my satisfaction that it doesn't
977749
1700 according to package. I suggest you go to Lowe's: this is a "natural daylight" bulb, nothing special. I bought a 4-pak there for less than seven dollars. Only difference is the ones at Lowe's are 1600 lumens, which is insignificant.
802250
It should be noted that "lumen" can mean many things depending on how you obtain a lumen measurement. At one foot away with the "zoom" at max spread the light produced 4800~4900 lux which is about 450 lumens/sq ft. Though when focus to a point the light produced over 90,000 lux which is about 8,300 lumens/sq ft. Unless you can find definitive data that explains the lumen of this light (or any other light in existence) the advertised brightness of a flashlight is meaningless. It's would be better to look up the datasheet for the Cree XML emitter and search for visual examples of the light (using quality 3.7V 18650 Li-Ion bats of course). It should be noted that "lumen" can mean many things depending on how you obtain a lumen measurement. At one foot away with the "zoom" at max spread the light produced 4800~4900 lux which is about 450 lumens/sq ft. Though when focus to a point the light produced over 90,000 lux which is about 8,300 lumens/sq ft. Unless you can find definitive data that explains the lumen of this light (or any other light in existence) the advertised brightness of a flashlight is meaningless. It's would be better to look up the datasheet for the Cree XML emitter and search for... » Read More It should be noted that "lumen" can mean many things depending on how you obtain a lumen measurement. At one foot away with the "zoom" at max spread the light produced 4800~4900 lux which is about 450 lumens/sq ft. Though when focus to a point the light produced over 90,000 lux which is about 8,300 lumens/sq ft. Unless you can find definitive data that explains the lumen of this light (or any other light in existence) the advertised brightness of a flashlight is meaningless. It's would be better to look up the datasheet for the Cree XML emitter and search for visual examples of the light (using quality 3.7V 18650 Li-Ion bats of course). « Show Less