Lumens   (translated from Russian)
Lumens Lyu?men (lm, lm) - unit of the ... one candela, is equal to 4? to lumens. Multiple and lobate units Decimal multiple and ...
http://ru.wikipedia.org/wiki/Люмен - 3k - Cached (Russian) - Wikipedia (Russian) - Similar pages

Photometry (optics)
... between units that can't be converted (lumens and candelas, for example). We are familiar ... delivers a high luminous flux (measured in lumens), or to a lamp which concentrates the ... light emitted from a surface Luminous efficacy lumens / watt lm/W ratio of luminous flux ... light source it puts out very few lumens (because most of the energy is in ... −2 �nm −1 Watts (radiant flux) vs. lumens (luminous flux) A comparison of the ...
http://en.wikipedia.org/wiki/Photometry_(optics) - 16k - Cached - Similar pages

Lighting efficiency
... unit of energy. It is measured in lumens per watt (lumens/watt). Energy not converted into visible light ... visible spectrum as ultraviolet or infrared. 005 lumens/watt Incandescent tungsten filament at 7 watts (night light) 010 lumens/watt Incandescent tungsten filament at 100 watts (room light) 020 lumens/watt Incandescent halogen at 100 watts ( ...
http://en.wikipedia.org/wiki/Lighting_efficiency - 2k - Cached - Similar pages

Headlight
... a single axial filament that produces 1500 lumens when operated at 13.2 volts. H2 (55w, 12.8 volts, 1820 lumens) followed in 1964, and the transverse-filament ... designs include the H7, H8 (35w, 730 lumens), H9 (65w, 2100 lumens), and H11 (55w, 1200 lumens) bulbs. The first dual-filament halogen ...
http://en.wikipedia.org/wiki/Headlight - 60k - Cached - Similar pages

Incandescent light bulb
... the total power and is measured in lumens per watt (lm/W). The maximum efficacy ... with a rated light output of 1750 lumens, has an efficacy of 17.5 lumens per watt, compared to an "ideal" of 242.5 lumens per watt for one type of white ... and the theoretical luminous efficiency is 95 lumens per watt." No known material can ...
http://en.wikipedia.org/wiki/Incandescent_light_bulb - 54k - Cached - Similar pages

List of Maglite products (Flashlight wiki)
... 288px]] Lamp LK3A001 Peak candlepower 213 Avg. lumens 2.3 Battery AAA Battery life (continuous ... 288px]] Lamp LM3A001 Peak candlepower 488 Avg. lumens 15.6 Battery 2 AAA Battery life ... Lamp LM2A001 Peak candlepower 2,952 Avg. lumens 15.2 Battery 2 AA Battery life ... Specs [[Image:|288px]] Lamp Peak candlepower Avg. lumens Battery Battery life (continuous-on Length Barrel ... Specs [[Image:|288px]] Lamp Peak candlepower Avg. lumens Battery Battery life (continuous-on Length ...
http://flashlight.wikia.com/wiki/List_of_Maglite_products - 5k - Cached - Similar pages

ANSI lumen   (translated from German)
... usual lamp, 60 W, has approx.. 730 lumens a usual lamp, 100 W, has approx.. 1350 lumens a fluorescent tube Lumilux ecoplus daylight, 36 ... W (1.20 m long) approx.. 3250 lumens a compact fluorescent tube (Osram Dulux), 36 W, has approx.. 2900 lumens a halogen cold light mirror lamp has with 50 W 1430 to 2580 lumens (depending upon reflected beam angle of ...
http://de.wikipedia.org/wiki/ANSI-Lumen - 1k - Cached (German) - Wikipedia (German) - Similar pages

User talk:Atlant/Archive 1
... Atlant 8 July 2005 12:26 (UTC) Lumens per watt Hello. Over on the Lighting ... lighting systems can achieve better than 100 lumens per watt. My interest in lighting systems ... lights can all do better than 100 lumens per watt... with some Fluorescent lights apparently being able to get 600 lumens per watt. Is it the sort of ... 555 nm so "greenish-yellow") is ~683 lumens/watt and the maximum efficiency of " ...
http://en.wikipedia.org/wiki/User_talk:Atlant/Archive_1 - 70k - Cached - Similar pages

Talk:Electrical efficiency
... luminous efficiency) of lamps is measured in lumens per watt (lm/w)'. Also it is ... These numbers are obtained by dividing the lumens/watt with the maximum 683 lm/W ... sense intent. The maximum efficiency is 683 lumens per watt, multiplied by the photoptic function ... of the eye is close to 150 lumens per watt. Dividing by this much more ... the theoretical 100% lighting efficiency, or ideal lumens/W is such an arbitrary figure, ...
http://en.wikipedia.org/wiki/Talk:Electrical_efficiency - 11k - Cached - Similar pages

Lux
... which the luminous flux is spread. 1000 lumens, concentrated into an area of one square ... illuminance of 1000 lux. The same 1000 lumens, spread out over ten square metres, produces ... light fixture with an output of 12000 lumens. To light a factory floor with dozens ... of lux requires a larger number of lumens. Relationship between illuminance and power Illuminance is ... light emitted from a surface Luminous efficacy lumens / watt lm/W ratio of luminous ...
http://en.wikipedia.org/wiki/Lux - 5k - Cached - Similar pages