2. Lighting Systems: Electrical Sources Chapter 3 Part 2 © 2006 Fairchild Publications, Inc.

3. Electric Lighting Techniques Layered Lighting: –General (ambient) –Task –Accent –Decorative 2

4. General (Ambient) Sufficient lighting to walk through a space Establishes overall impression of space and is determined by: –Light level –Type of lamps –Style of luminaires –Amount of daylight 3

5. Ambient integrated strategies General lighting often done with structural lighting systems: – Cornice : Located on vertical surfaces; directs light downward – Cove : Close to ceiling; directs light upward – Wall bracket : Located on a wall; directs light upward and downward 4

7. Ambient Luminaires Ceiling-mounted lighting systems: – Wallslot : Integrated into the ceiling system and distributes light down onto vertical surfaces – Recessed luminaires (fixture): downlight (high-hat) mounted above ceiling and directs light downward – Surface-mounted fixtures : Track lighting, pendants, and any other luminaire installed on a ceiling 6

8. Task Lighting Light for specific activities and tasks Flexibility and control essential for users Special considerations: –Critical tasks –Time spent on task –Age of users Potential problems to address: –Strong contrasts in illumination levels –Glare and veiling reflections 7

10. Task Lighting Resolving problems associated with illumination contrasts: –Moderate illumination levels between task and surrounding area –Increase contrast in color –Increase size of a task Planning task lighting requires an examination of: –Activities in the space –Characteristics of each task –Characteristics of the users 9

11. Accent Lighting Highlights an object or element in a space A basis for accent lighting is that people are attracted to the brightest region in a space Planning accent lighting: –Identify what should be highlighted –Review the surrounding areas and establish contrast –Determine angle and intensity (5-1 ratio) © 2006 Fairchild Publications, Inc. 10

13. Accent Lighting Accent techniques: – Grazing : Enhancing textures and forms of an object by placing the light source close to the object Backlighting: –Creates a silhouette of objects Types of luminaires: –Uplights –Recessed spots –Spotlight projectors with optical control –Furniture-integrated systems 12

14. Decorative Lighting Primary purpose is as an ornamental element in a space Examples: –Chandeliers –Holograms –Lasers –Neon lights –Fiber optics –Candles 13