1

3

General Informations:Good light is needed to create optimum visual conditions indoors. When planning a lighting installation a number of factors have to be taken into consideration which interact to determine the quality of the system as a whole. DIAL has listed these factors as Ten Guidelines for Right Light. This is a useful source of information for creating lighting solutions that meet the needs of the user to the full and provide efficient working conditions.

4

1.1. Adequate illuminanceAdequate illuminance

2. Harmonious distribution of luminance

3. Adequate glare control

4. Good contrast rendition

5. The right direction of incidence

6. Pleasant shadow conditions

7. Suitable color appearance

8. Natural color rendition

9. Effective lighting atmosphere

10. Efficient energy consumption

5

First Project is to design an office room of dimensions:

Length=5.5 meters

Width=3 meters

Height=2.5 meters with false ceiling

6

Solution:

• From this table choose the lux needed:

7

8

9

Recommended Surface Reflectance

Surface Reflectance

CeilingWallsPartitions or screensFloorsFurniture and equipmentWindow shades

7 or above 0.5 – 0.7 0.4 – 0.7 0.1  – 0.3 0.2  – 0.5 0.3  - 0.6

10

Create a new project

Enter the dimensions of the room

Enter the reflectance factors of the ceiling, walls, and floors according to the table.

Insert a luminaire from a data base inside the luminaire selection toolbar.

Insert the luminaire to the room using a field arrangement or any.

From the luminaire data choose mounting and put the right lux that you need then press suggestions.

Choose start calculation from the output toolbar.

Emin \ Eav better to reach the value 0.8

12

17

1

2

Press right click on this area

19

22

23

3D Light Distribution Display

Isolines

24

25

27

Additional Informations:

28

29

30

31

You can use the help of the dialux to Know the lux for any application

32

33

34

35

36

37