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A lumen is a measure of how much total light a bulb produces. Incandescent (1156) bulbs spray their light through almost 360 degrees and lamp housings designed for them rely on that. Most LED lamps put all their light out in a narrow cone and work poorly with standard 1156 housings. However, there are LED assemblies that have their light-producing chips arranged around a sphere and they work well in standard housings.
The LEDs you see on commercial vehicles are mounted in housings designed for their narrow cone output, that's why they look bright.
A standard 1156 bulb puts out about 400 lumens when new. As of January 2010, I haven't found an LED replacement that puts out any more, and most are only 50 lumens or so, not enough for a standard 1156 housing.
To confirm the above: From Bosch Automotive Handbook7th ed. a 1156 (BA15S) Stop/Turn 21W bulb puts out 460 lumens. For a 5W Side marker / Tail BA15S it is 50 lumens (strangely low, I know) and 10W Tail light 125 lumens.
If replacing with a warm white LED, then that is how many lumens you need to match the brightness (as well as light direction being good). BUT, if using a Red LED for a brake light or an Amber LED for Turn signals, then less lumens are needed. This is because the Red lens of a brake light filters out all the blue, yellow, green, etc out of white light, but filters nothing from a Red LED. The question now is: What is the percentage of "Red" in the light output of a "White" incandescent bulb?
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How many lumens in a 1141 bulb?
21
How many watts is a 1141 auto bulb?
An 1141 bulb consumes 18.4 watts.
How many lumens are in a 1000 watt incondescent light bulb?
A 1,000 watt is 15,000 lumens. A 100 watt bulb is 1,500 lumens.
How bright is an led bulb marked 100 lumen?
Brightness is measured in lumens so the bulb has a brightness of 100 lumens. The electrical power the bulb uses is measured in watts. The efficiency of a bulb is expressed in the number of lumens produced per watt of electric power.
Is a 35 lumens bulb as bright as a 60 watts bulb?
Lumens measures how bright it is, watts measures how much electric power it uses up. An old-type incandescent bulb produces about 10 lumens per watt. A halogen produce about 13 lumens per watt. A fluorescent (energy saving) bulb produces about 50 lumens per watt. LEDs produce somewhere around the same as a fluorescent.
How many lumens in a 1141 bulb?
21
How many watts is a 1141 auto bulb?
An 1141 bulb consumes 18.4 watts.
How many lumens for an led replacement vs stock 1157 bulb?
A 150 lumen red LED will be as bright if the tail light lens is red. A 220 red led will be brighter than a regular 1157. The colored lens will make a white led bulb not as brighter due the filtering affect it has on the light wave lengths. A white LED replacement would have to be 400 lumens to equal the 1157's brightness.
How many lumens are in a 1000 watt incondescent light bulb?
A 1,000 watt is 15,000 lumens. A 100 watt bulb is 1,500 lumens.
HOW MANY LUMENS IN A BULB?
21
How bright is an led bulb marked 100 lumen?
Brightness is measured in lumens so the bulb has a brightness of 100 lumens. The electrical power the bulb uses is measured in watts. The efficiency of a bulb is expressed in the number of lumens produced per watt of electric power.
Is a 35 lumens bulb as bright as a 60 watts bulb?
Lumens measures how bright it is, watts measures how much electric power it uses up. An old-type incandescent bulb produces about 10 lumens per watt. A halogen produce about 13 lumens per watt. A fluorescent (energy saving) bulb produces about 50 lumens per watt. LEDs produce somewhere around the same as a fluorescent.
How many lumens in a 20 watt halogen bulb?
Approximately 15 lumens per watt for halogen, so 300 lumens.
How many lumens are in a 150 watt incandescent light bulb?
A 150 watt halogen bulb will give off somewhere around 2000 lumens. These lights may give off up to about 2400 lumens.
How many lumens are in a 34 watt bulb?
The number of lumens produced by a 34 watt bulb depends on the type of bulb. As a general estimation, a standard incandescent bulb produces around 400-500 lumens per 40 watts, so a 34 watt bulb would likely produce slightly fewer lumens, around 350-450 lumens. However, different bulb technologies such as LED or CFL can produce a higher number of lumens with lower wattage.
How many lumens in a 100w light bulb?
1500
What is the candlepower of a 1156 bulb?
460 lumens for a standard automotive, not uprated.
