Types of lighting & lighting fixtures

PPT explains the role of lighting in interior decoration. Types of lighting fixtures explained along with principles of lighting and illumination required for different areas.

1. Types of Lighting and Lighting Fixtures PowerPoint Presentation By: Hotel Management Tutorials For more PPTs and videos follow and subscribe to Hotel Management Tutorials on YouTube @ https://www.youtube.com/channel/UCPAiJGawMvOStSDfcArCwdw

2. Types of Lighting- Based on Sources Natural Light Artificial Light

3. Measurement of lights Lux Lumen

4. Measurement of lights Footcandle Illumination

5. Types of lighting –Based on Illumination

6. Direct vs Indirect Light

7. Semi Direct vs Semi Indirect Light

8. Diffused Lighting

9. Revision

10. Comparison of Illumination

11. Methods of Lighting

12. 1. Day Light Advantages It is Natural and free of cost It is soothing and does not cause fatigue to the eyes. Daylight intensity changes during the day and it provides another dimension to room which is refreshing Disadvantages The changing intensity of light can change the atmosphere of the room direct sunlight can fade some color of the fabric daylight do not evenly illuminate a room supplementary lighting is required as the intensity of daylight is not the same throughout the day large window designed for daylight can make a room extremely hot or cold during summer and winter respectively

13. Architectural & Non-Architectural Lighting

14. Types of fixtures used 1. Filament bulbs – they are easy to install add an amount of light that can be changed by simply changing the bulb . But these bulbs are not of uniform quality and require additional crew fitting 2. Florescent tubes – they are also referred to as strip light . These are of two types : Cold cathode tube – They light up immediately without flickering . Hot cathode tube – Require flickering before starting

15. Architectural lightings 1. Valance Lighting 2. Cornice Lighting 3. Cove Lighting 4. Bracket Lighting 5. Soffit Lighting 6. Recessed Lighting 7. Sky Lighting 8. Translucent lighting 9. Track lighting

16. Valance Lighting

17. Cornice Light- It is built at the junction between the ceiling and the wall.

18. Cove lighting-Usually near the ceiling with the light directed upwards.

19. Bracket Lighting- Are located at a lower height than valances and are not necessarily related to window treatments.

20. Soffit lighting- mostly used in bathrooms, kitchens, bookshelves, and mirrors

21. Recessed Lighting-this includes built-in panel fixtures that provide concentrated light

22. Sky Lighting-opening in the roof of a house constructed to allow natural light into space.

23. Translucent Lighting-The light source is concealed under the panel which may be on the floor or the ceiling or a free-standing decorative unit. These are used in discotheques, kitchens, bathrooms, or other work areas

24. Track Lighting-These are lighting fixtures fitted on the track. This may be used to throw light to highlight the wall or the contents of the wall.

25. Factors to Consider when Planning a Lighting System 1. The amount of light required for an area will depend on various factors like: Location and direction of the light sources. Reflected qualities of color . Textures used in the room. The number of lamps and fixtures. The wattage of bulbs and tubes. 2. If artificially lighting a room check on heat gains. 3. Design and durability. 4. Ease of replacement especially if lampshades are used. 5. Cleaning-they should be easily cleaned. 6. Cost.

26. Recommended Value of Illumination

27. Principles of Lighting Designs The use of lighting is visually pleasing when it follows the following principles: 1. Balance: This is achieved by placing light sources throughout the room avoiding a concentration of light on any side or area of the space. Balance can be symmetrical or asymmetrical. 2. Unity: This can be achieved by duplicating the fixtures as well as repeating the materials, finishes, colours, textures, and maybe lampshades. 3. Variety: This can be created by using similar but not identical fixtures. Variety can also be created by having general and local lighting also by changing the level of illumination with dimmers. 4. Emphasis: It is given by highlighting. Lack of emphasis in an interior causes boredom, confusion, and uncertainty as to the design content and intention. 5. Rhythm: The sequence of lighting will create a luminous rhythm giving the space a dynamic quality. 6. Scale and Proportion: The fixtures must be in proportion and scale to the room, themselves, and to the relative objects in the room. 7. Harmony: If the contrast between general and accent lighting is too strong there will not be enough luminous transaction and the lighting composition will lack harmony