Most leds produce a lambertian beam.
Led light beam angle calculator.
Lamps such as halogens and some leds come in a variety of angles from 4 degree to 60 degree with some of the larger halogen lamps up to 120 degree.
Beam angle calculator december 11 2007 by rob sayer on stage lighting presents a simple beam angle calculator to help you find the correct spotlight for your show.
Enter lens beam angle distance from wall and height.
Just enter two known values and click the calculate button to calculate the unknown value you are looking for.
Enter the size of your led chip or select from one of the defaults we have entered and the desired lens size to calculate the achievable beam angle.
The amount of lux in an area or on a surface can vary depending upon the distance the light travels and the angle at which it is dispersed.
If you need to project a gobo image to a certain size or the pool of a spotlight to be a specific width you need to find out the beam angle.
For example a 1 candela light source will product 1 lumen per square meter at the distance of 1 meter.
This convenient calculator will determine the beam angle the beam spot size or the distance of a beam.
Figure out the led lens beam angle needed.
Then you can use the placement calculator on the next page to get an idea of where to place them.
The beam angle of an led spot determines the diameter of the generated light circle on the illuminated surface or object.
Use the number of lights calculator to get an approximate number of recessed lights a room needs for general lighting.
The ideal beam angle usually depends very individually on the place of use of the lamp and on your own use case.
Put in two of the values and then hit calculate to find the third value.
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Values can be in feet or meters but both values must match.
Please note that the estimate works for leds with a lambertian beam angular profile.
Handy tool to calculate the size of the light beam coverage.
For example a beam angle on 30 degrees means the light has a shape of a cone and its borders form a 15 degree angle with the center axis.
This can be determined very well with the beam angle calculator.
How to use it.
Distance from surface to light.
This calculator provides a rough estimate based on a etendue calculation.
The beam angle of a lamp is the angle at which the light is distributed or emitted.
Use our lux lumens calculator to determine how much light is needed for your industrial lighting application.