There is no direct conversion between lumens and candlepower because they measure different aspects of light. Lumens quantify the total light output from a source, while candlepower measures the intensity of light in a specific direction.
Lumen is a unit of luminous flux, while candlepower (or candelas) is a unit of luminous intensity. The conversion between lumen and candlepower depends on the directionality of the light source. For the radiant intensity of a uniform point source of light, 1 candela is equivalent to 1 lumen per steradian (lm/sr).
One lumen makes up 1 ANSI lumen as they both measure the same output of light. ANSI lumens are used exclusively for measuring the output of projectors.
700 lumens
Approximately 15 lumens per watt for halogen, so 300 lumens.
They are one in the same just a different way of measuring the output of light. Much in the same way one would say a football field is 100 yards long it is also 300 ft. A rough answer to your question is 100 llumens equals about 26,500 candlepower. The term candlepower came about of course way back when everyone used candles in stead of modern lightbulbs. Llumens come from putting light on an object from a distance and maesuring the light at that point and distance. Very similar is horsepower and torque where horsepower is NOT a measured number on a dyno it is computed from torque output then converted from work over time.
A 1,000 watt is 15,000 lumens. A 100 watt bulb is 1,500 lumens.
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Currently maximum LED luminous efficiency is about 114 lumens/W, measured at 50mA. Average luminous efficiency is about 104 lumens/W. Ordinary LED light effect is about 60 lumens / W. 18W is about 130 lumens is about 1080 lumens.
About 80 lumens per watt of electric power is normal for LEDs.
The Combitube from Rusch Medical contains a light output of 158 lumens.
the MK127 parachute flare is NATO rated at 125,000 candlepower.