Beam Angle

How to estimate the amount of  the surface illuminated by an LED device thanks to the beam angle

beam angle

Light emission is not the same for every LED products. Each lamp has a beam angle that determines the amount of light that reaches a surface. To estimate the product, first of all we need to find out if the angle is acute or obtuse.  If it’s acute, it will focus light on a limited space section.  It could be particularly useful for lighting a shop window or any item in exposure.  Otherwise, if the angle is wider, the  light will cover a bigger area and then it is recommended for illuminating a wall.

beam angle

Thanks to the underlying table, you will be able to mesure the space section illuminated by your lamp, based on the beam angle and the distance (in mt) between the lamp and the item you want to light.  For example, a 30° beam angle lamp arranged 3 meters away will illuminate a circle of 1.61 mt in diameter.

Check out in following table which beam angle suits your lighting project.

BEAM ANGLE TABLE 


DEGREES

METERS

15°

30°

45°

60°

75°

90°

100°

120°

0,50

0,13

0,27

0,41

0,58

0,77

1,00

1,19

1,73

0,75

0,20

0,40

0,62

0,87

1,15

1,50

1,79

2,60

1,00

0,26

0,54

0,83

1,15

1,53

2,00

2,38

3,46

1,25

0,33

0,67

1,04

1,44

1,92

2,50

2,98

4,33

1,50

0,39

0,80

1,24

1,73

2,30

3,00

3,58

5,20

1,75

0,46

0,94

1,45

2,02

2,69

3,50

4,17

6,06

2,00

0,53

1,07

1,66

2,31

3,07

4,00

4,77

6,93

2,25

0,59

1,21

1,86

2,60

3,45

4,50

5,36

7,79

2,50

0,66

1,34

2,07

2,89

3,84

5,00

5,96

8,66

2,75

0,72

1,47

2,28

3,18

4,22

5,50

6,55

9,53

3,00

0,79

1,61

2,49

3,46

4,60

6,00

7,15

10,39

3,25

0,86

1,74

2,69

3,75

4,99

6,50

7,75

11,26

3,50

0,92

1,88

2,90

4,04

5,37

7,00

8,34

12,12

3,75

0,99

2,01

3,11

4,33

5,75

7,50

8,94

12,99

4,00

1,05

2,14

3,31

4,62

6,14

8,00

9,53

13,86

4,25

1,12

2,28

3,52

4,91

6,52

8,50

10,13

14,72

4,50

1,18

2,41

3,73

5,20

6,91

9,00

10,73

15,59

4,75

1,25

2,55

3,94

5,48

7,29

9,50

11,32

16,45

5,00

1,32

2,68

4,14

5,77

7,67

10,00

11,92

17,32

For further informations, don’t hesitate contacting us: our team will help you choose the best solution.

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