what is the lux output?
1821536
I'm not sure but I would recommend it with the in-car adaptor. You need to use it for 90 mins per day so it's not as strong as others. I use a stronger one at home for 30 mins per day and then this one for my drive to work and back, approx 40 mins and this has made a huge difference.
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.
1484249
Super-bright, long lasting SMD LED bulbs460-500 Lumens and 179-190 LuxLithium-ion rechargeable batteryAuto discharge shut-off and overcharge protection to prolong battery life360° rotating hook7.4 Volt, 1700mAH lithium-ion rechargeable battery - 3 hours continuous use
1546166
thank you for the questionactually I returned it back as it didnt match my requirements using it in big room, regarding resolution and illumination (lumins units)wish to help you more :)
854732
I have no idea, but I removed the Lux unit after about a week as I found it hard to program and that it did not control the temperature very accurately. I went back to my old Honeywell unit until I can find a better one.
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.
139671
Don't know in terms of lumens but general light output is reduced nearly 50%
466673
I haven't heard anything about a poor light output but I gave it as a gift so I don't really know.
2239523
none effectively. Light is less bright than a christmas light. Seems to last a night, but no practical amount of light is produced
1547942
I buy a luxmeter of this brand and capacity, and has the ability to measure light from 0.1 lux to 200,000 lux, divided into 4 types of measurement ranges.
1915643
When I measured it, it was about 300 lux. When the seller measured it they probably stuck the lumen meter directly in the light which inflated the numbers... It is compatible to a 3 d cell mag light, when focused. You will also need to get the 14500 size li-ion batteries to get the full brightness.
2226235
Thanks for your inquiry. This unit has a Working Ambient Illumination of up to 2000 lux.
1919198
Hi Yunping-An accurate measurement would be lumens per square meter which is an industry standard. A Philips 500W reflector pool bulb designed for 120-130V operation is rated at 5000 lumens. Our PoolBright202 has various light outputs, from 1075 lumens to 11850 lumens, depending upon which color is displayed. W=11850; Y=10700; G=8600; AQ=8600; V=3550; R=2150; B=1075.
1101643
Hello David,The answer is sort of technical, so bare with me. The lumen is the derived unit of luminous flux. Luminous flux is a measure of the total "amount" of visible light (as measured in the green light wavelength spectrum) emitted by a source. Luminous flux differs from power (radiant flux) in that luminous flux measurements reflect the varying sensitivity of the human eye to different wavelengths of light, while radiant flux measurements indicate the total power of all electromagnetic waves emitted, independent of the eye's ability to perceive it. Lumens are related to lux in that one lux is one lumen per square meter.Check out Wiikipedia for a more complete answer.Thanks, Glen from CampingStuff Hello David,The answer is sort of technical, so bare with me. The lumen is the derived unit of luminous flux. Luminous flux is a measure of the total "amount" of visible light (as measured in the green light wavelength spectrum) emitted by a source. Luminous flux differs from power (radiant flux) in that luminous flux measurements reflect the varying sensitivity of the human eye to different wavelengths of light, while radiant flux measurements indicate the total power of all electromagnetic waves emitted, independent of the eye's ability to perceive it. Lumens are... » Read More Hello David,The answer is sort of technical, so bare with me. The lumen is the derived unit of luminous flux. Luminous flux is a measure of the total "amount" of visible light (as measured in the green light wavelength spectrum) emitted by a source. Luminous flux differs from power (radiant flux) in that luminous flux measurements reflect the varying sensitivity of the human eye to different wavelengths of light, while radiant flux measurements indicate the total power of all electromagnetic waves emitted, independent of the eye's ability to perceive it. Lumens are related to lux in that one lux is one lumen per square meter.Check out Wiikipedia for a more complete answer.Thanks, Glen from CampingStuff « Show Less
216865
Light Output:High brightness: 350 lumensMedium brightness: 95 lumensLow Brightness: 45 Lumens Runtime:High brightness: Up to 1.75 continuous hoursMedium brightness: Up to 3.50 continuous hoursLow brightness: Up to 6.75 continuous hoursStrobe: Up to 5.50 continuous hours
783175
The unit of measure of light output is the lumen (other UOMs like lux, candella, candlepower, or wattage/square area exist). It is a measure of quantity.SAD therapy relies not only on amount, but of quality of light: a specific spectrum of wavelengths, often measured in temperature (Kelvin) or nanometers.This product is intended for waking up, not for combatting SAD.
1547940
The minimum resolution is 0.1 lux. I would recommend looking for another meter that has a lower resolution if you care about accurately measuring to 0.1 lux resolution.